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<?xml version="1.0" encoding="windows-1252"?> |
<!-- XBRL document created with Toppan Merrill Bridge 9.6.8119.21675 --> |
<!-- Based on XBRL 2.1 --> |
<!-- Created on: 6/24/2022 12:14:49 PM --> |
<!-- Modified on: 6/24/2022 12:14:49 PM --> |
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| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DueToAffiliateCurrentAndNoncurrent" xlink:label="us-gaap_DueToAffiliateCurrentAndNoncurrent"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="us-gaap_LiabilitiesAbstract" xlink:to="us-gaap_DueToAffiliateCurrentAndNoncurrent" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_CapitalContributionsPayable" xlink:label="bctciv_CapitalContributionsPayable"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="us-gaap_LiabilitiesAbstract" xlink:to="bctciv_CapitalContributionsPayable" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="us-gaap_LiabilitiesAbstract" xlink:to="us-gaap_Liabilities" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnersCapitalAbstract" xlink:label="us-gaap_PartnersCapitalAbstract"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_PartnersCapitalAbstract" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_AssignorLimitedPartnersInterestCapital" xlink:label="bctciv_AssignorLimitedPartnersInterestCapital"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="us-gaap_PartnersCapitalAbstract" xlink:to="bctciv_AssignorLimitedPartnersInterestCapital" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LimitedPartnersCapitalAccount" xlink:label="us-gaap_LimitedPartnersCapitalAccount"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="us-gaap_PartnersCapitalAbstract" xlink:to="us-gaap_LimitedPartnersCapitalAccount" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GeneralPartnersCapitalAccount" xlink:label="us-gaap_GeneralPartnersCapitalAccount"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="us-gaap_PartnersCapitalAbstract" xlink:to="us-gaap_GeneralPartnersCapitalAccount" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnersCapital" xlink:label="us-gaap_PartnersCapital"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_PartnersCapital" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity" priority="1" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:role="http://www.bostoncapital.com/role/StatementCondensedBalanceSheetsParenthetical" xlink:type="extended" xlink:title="00105 - Statement - CONDENSED BALANCE SHEETS (Parenthetical)"> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="us-gaap_StatementTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="15" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="16" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="17" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="20" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="21" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="22" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="23" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="24" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="25" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="26" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="27" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnersCapitalAccountDistributionPerUnitOfLimitedPartnerInterest" xlink:label="us-gaap_PartnersCapitalAccountDistributionPerUnitOfLimitedPartnerInterest"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_PartnersCapitalAccountDistributionPerUnitOfLimitedPartnerInterest" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LimitedPartnersCapitalAccountUnitsAuthorized" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsAuthorized"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_LimitedPartnersCapitalAccountUnitsAuthorized" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_AssignorLimitedPartnersCapitalAccountUnitsIssued" xlink:label="bctciv_AssignorLimitedPartnersCapitalAccountUnitsIssued"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="us-gaap_StatementLineItems" xlink:to="bctciv_AssignorLimitedPartnersCapitalAccountUnitsIssued" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LimitedPartnersCapitalAccountUnitsIssued" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsIssued"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_LimitedPartnersCapitalAccountUnitsIssued" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding" priority="1" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:role="http://www.bostoncapital.com/role/StatementCondensedStatementsOfOperations" xlink:type="extended" xlink:title="00200 - Statement - CONDENSED STATEMENTS OF OPERATIONS"> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="us-gaap_StatementTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="us-gaap_RevenuesAbstract" xlink:to="us-gaap_InterestIncomeOperating" priority="1" use="optional"/> |
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| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal" xlink:label="us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal"/> |
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| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="us-gaap_OperatingExpensesAbstract"/> |
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| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProfessionalFees" xlink:label="us-gaap_ProfessionalFees"/> |
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| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLossAllocatedToGeneralPartners" xlink:label="us-gaap_NetIncomeLossAllocatedToGeneralPartners"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_NetIncomeLossAllocatedToGeneralPartners" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax" xlink:label="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax"/> |
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| <definitionLink xlink:role="http://www.bostoncapital.com/role/StatementCondensedStatementsOfChangesInPartnersCapitalDeficit" xlink:type="extended" xlink:title="00300 - Statement - CONDENSED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (DEFICIT)"> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="us-gaap_StatementTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="20" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="21" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="22" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="23" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="24" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="25" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="26" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="27" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnerTypeOfPartnersCapitalAccountAxis" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="2" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_PartnerTypeOfPartnersCapitalAccountAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="us-gaap_PartnerTypeOfPartnersCapitalAccountAxis" xlink:to="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_AssigneesMember" xlink:label="bctciv_AssigneesMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain" xlink:to="bctciv_AssigneesMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GeneralPartnerMember" xlink:label="us-gaap_GeneralPartnerMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain" xlink:to="us-gaap_GeneralPartnerMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_LimitedPartnersMember" xlink:label="bctciv_LimitedPartnersMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain" xlink:to="bctciv_LimitedPartnersMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnersCapital" xlink:label="us-gaap_PartnersCapital"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_PartnersCapital" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnersCapitalAccountContributions" xlink:label="us-gaap_PartnersCapitalAccountContributions"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_PartnersCapitalAccountContributions" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnersCapitalAccountDistributions" xlink:label="us-gaap_PartnersCapitalAccountDistributions"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_PartnersCapitalAccountDistributions" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_NetIncomeLoss" priority="1" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:role="http://www.bostoncapital.com/role/StatementCondensedStatementsOfCashFlows" xlink:type="extended" xlink:title="00400 - Statement - CONDENSED STATEMENTS OF CASH FLOWS"> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="us-gaap_StatementTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="15" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="16" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="17" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="20" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="21" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="22" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="23" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="24" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="25" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="26" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="27" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetIncomeLoss" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="15" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="16" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="17" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="20" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="21" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="22" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="23" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="24" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="25" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="26" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="27" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_CalculationOfNetLossPerBeneficialAssigneePartnershipUnitNumeratorAndDenominatorInEarningsPerShareLineItems" xlink:label="bctciv_CalculationOfNetLossPerBeneficialAssigneePartnershipUnitNumeratorAndDenominatorInEarningsPerShareLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="bctciv_CalculationOfNetLossPerBeneficialAssigneePartnershipUnitNumeratorAndDenominatorInEarningsPerShareLineItems" xlink:to="bctciv_ScheduleOfCalculationOfNetLossPerBeneficialAssigneePartnershipUnitNumeratorAndDenominatorInEarningsPerShareTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfLimitedPartnershipAndGeneralPartnershipUnitOutstandingBasicAndDiluted" xlink:label="us-gaap_WeightedAverageNumberOfLimitedPartnershipAndGeneralPartnershipUnitOutstandingBasicAndDiluted"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_CalculationOfNetLossPerBeneficialAssigneePartnershipUnitNumeratorAndDenominatorInEarningsPerShareLineItems" xlink:to="us-gaap_WeightedAverageNumberOfLimitedPartnershipAndGeneralPartnershipUnitOutstandingBasicAndDiluted" priority="1" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:role="http://www.bostoncapital.com/role/DisclosureOrganizationAndSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails" xlink:type="extended" xlink:title="40103 - Disclosure - ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)"> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OrganizationAndSummaryOfSignificantAccountingPoliciesTable" xlink:label="bctciv_OrganizationAndSummaryOfSignificantAccountingPoliciesTable"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipAxis" xlink:label="srt_OwnershipAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="bctciv_OrganizationAndSummaryOfSignificantAccountingPoliciesTable" xlink:to="srt_OwnershipAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OwnershipDomain" xlink:label="srt_OwnershipDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="srt_OwnershipAxis" xlink:to="srt_OwnershipDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditMember" xlink:label="bctciv_TaxCreditMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="srt_OwnershipDomain" xlink:to="bctciv_TaxCreditMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OrganizationAndSummaryOfSignificantAccountingPolicyLineItems" xlink:label="bctciv_OrganizationAndSummaryOfSignificantAccountingPolicyLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="bctciv_OrganizationAndSummaryOfSignificantAccountingPolicyLineItems" xlink:to="bctciv_OrganizationAndSummaryOfSignificantAccountingPoliciesTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_OrganizationAndSummaryOfSignificantAccountingPolicyLineItems" xlink:to="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" xlink:label="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_OrganizationAndSummaryOfSignificantAccountingPolicyLineItems" xlink:to="us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_LimitedPartnersCapitalAccountPerUnits" xlink:label="bctciv_LimitedPartnersCapitalAccountPerUnits"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_OrganizationAndSummaryOfSignificantAccountingPolicyLineItems" xlink:to="bctciv_LimitedPartnersCapitalAccountPerUnits" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LimitedPartnersCapitalAccountUnitsAuthorized" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsAuthorized"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_OrganizationAndSummaryOfSignificantAccountingPolicyLineItems" xlink:to="us-gaap_LimitedPartnersCapitalAccountUnitsAuthorized" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_OrganizationAndSummaryOfSignificantAccountingPolicyLineItems" xlink:to="us-gaap_DeferredTaxAssetsValuationAllowance" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_AmortizationPeriodOfAcquisitionCostsStraightLineMethod" xlink:label="bctciv_AmortizationPeriodOfAcquisitionCostsStraightLineMethod"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_OrganizationAndSummaryOfSignificantAccountingPolicyLineItems" xlink:to="bctciv_AmortizationPeriodOfAcquisitionCostsStraightLineMethod" priority="1" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:role="http://www.bostoncapital.com/role/DisclosureRelatedPartyTransactionsAdvancesFromAffiliateOfGeneralPartnerDetails" xlink:type="extended" xlink:title="40201 - Disclosure - RELATED PARTY TRANSACTIONS - Advances from the affiliate of general partner (Details)"> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ScheduleOfAdvancesFromAffiliateTable" xlink:label="bctciv_ScheduleOfAdvancesFromAffiliateTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="bctciv_ScheduleOfAdvancesFromAffiliateTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="15" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="16" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="17" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="20" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="21" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="22" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="23" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="24" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="25" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="26" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="27" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_AdvancesFromAffiliateLineItems" xlink:label="bctciv_AdvancesFromAffiliateLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="bctciv_AdvancesFromAffiliateLineItems" xlink:to="bctciv_ScheduleOfAdvancesFromAffiliateTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_AdvancesFromAffiliateOfGeneralPartner" xlink:label="bctciv_AdvancesFromAffiliateOfGeneralPartner"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_AdvancesFromAffiliateLineItems" xlink:to="bctciv_AdvancesFromAffiliateOfGeneralPartner" priority="1" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:role="http://www.bostoncapital.com/role/DisclosureRelatedPartyTransactionsFundManagementFeesAccruedDetails" xlink:type="extended" xlink:title="40202 - Disclosure - RELATED PARTY TRANSACTIONS - Fund management fees accrued (Details)"> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="15" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="16" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="17" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="20" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="21" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="22" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="23" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="24" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="25" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="26" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="27" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="us-gaap_RelatedPartyTransactionLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_GrossManagementFee" xlink:label="bctciv_GrossManagementFee"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="bctciv_GrossManagementFee" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_AssetManagementAndReportingFee" xlink:label="bctciv_AssetManagementAndReportingFee"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="bctciv_AssetManagementAndReportingFee" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_FundManagementFeeNet" xlink:label="bctciv_FundManagementFeeNet"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="bctciv_FundManagementFeeNet" priority="1" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:role="http://www.bostoncapital.com/role/DisclosureRelatedPartyTransactionsFundManagementFeesPaidDetails" xlink:type="extended" xlink:title="40203 - Disclosure - RELATED PARTY TRANSACTIONS - Fund management fees paid (Details)"> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="15" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="16" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="17" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="20" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="21" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="22" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="23" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="24" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="25" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="26" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="27" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="us-gaap_RelatedPartyTransactionLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ManagementFeeExpense" xlink:label="us-gaap_ManagementFeeExpense"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="us-gaap_ManagementFeeExpense" priority="1" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:role="http://www.bostoncapital.com/role/DisclosureRelatedPartyTransactionsGeneralAdministrativeAndProfessionalFeeDetails" xlink:type="extended" xlink:title="40204 - Disclosure - RELATED PARTY TRANSACTIONS - General administrative and professional fee (Details)"> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ScheduleOfGeneralAdministrativeExpensesTable" xlink:label="bctciv_ScheduleOfGeneralAdministrativeExpensesTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="bctciv_ScheduleOfGeneralAdministrativeExpensesTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="15" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="16" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="17" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="20" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="21" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="22" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="23" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="24" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="25" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="26" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="27" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_GeneralAdministrativeExpensesLineItems" xlink:label="bctciv_GeneralAdministrativeExpensesLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="bctciv_GeneralAdministrativeExpensesLineItems" xlink:to="bctciv_ScheduleOfGeneralAdministrativeExpensesTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentForAdministrativeFees" xlink:label="us-gaap_PaymentForAdministrativeFees"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_GeneralAdministrativeExpensesLineItems" xlink:to="us-gaap_PaymentForAdministrativeFees" priority="1" use="optional"/> |
| | </definitionLink> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
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| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="us-gaap_RelatedPartyTransactionLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_PercentageOfAnnualManagementFee" xlink:label="bctciv_PercentageOfAnnualManagementFee"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="bctciv_PercentageOfAnnualManagementFee" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_AccruedManagementFees" xlink:label="bctciv_AccruedManagementFees"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="bctciv_AccruedManagementFees" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_RepaymentOfAdvanceFromAffiliate" xlink:label="bctciv_RepaymentOfAdvanceFromAffiliate"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="bctciv_RepaymentOfAdvanceFromAffiliate" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ProceedsFromCollectionOfAdvanceFromAffiliate" xlink:label="bctciv_ProceedsFromCollectionOfAdvanceFromAffiliate"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="bctciv_ProceedsFromCollectionOfAdvanceFromAffiliate" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentDecreaseForgiveness" xlink:label="us-gaap_DebtInstrumentDecreaseForgiveness"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="us-gaap_DebtInstrumentDecreaseForgiveness" priority="1" use="optional"/> |
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| <definitionLink xlink:role="http://www.bostoncapital.com/role/DisclosureInvestmentsInOperatingLimitedPartnershipsOperatingPartnershipsWithinFundDetails" xlink:type="extended" xlink:title="40301 - Disclosure - INVESTMENTS IN OPERATING LIMITED PARTNERSHIPS - Operating Partnerships within the Fund (Details)"> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ScheduleOfNumberOfOperatingPartnershipsTable" xlink:label="bctciv_ScheduleOfNumberOfOperatingPartnershipsTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="bctciv_ScheduleOfNumberOfOperatingPartnershipsTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="15" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="16" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="17" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="20" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="21" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
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| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="24" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="25" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="26" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="27" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_NumberOfOperatingPartnershipsLineItems" xlink:label="bctciv_NumberOfOperatingPartnershipsLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="bctciv_NumberOfOperatingPartnershipsLineItems" xlink:to="bctciv_ScheduleOfNumberOfOperatingPartnershipsTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_NumberOfOperatingPartnerships" xlink:label="bctciv_NumberOfOperatingPartnerships"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_NumberOfOperatingPartnershipsLineItems" xlink:to="bctciv_NumberOfOperatingPartnerships" priority="1" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:role="http://www.bostoncapital.com/role/DisclosureInvestmentsInOperatingLimitedPartnershipsDispositionsBySeriesDetails" xlink:type="extended" xlink:title="40302 - Disclosure - INVESTMENTS IN OPERATING LIMITED PARTNERSHIPS - Dispositions by series (Details)"> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ScheduleOfDispositionsBySeriesTable" xlink:label="bctciv_ScheduleOfDispositionsBySeriesTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="bctciv_ScheduleOfDispositionsBySeriesTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="15" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="16" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="17" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_DispositionsBySeriesDisclosureLineItems" xlink:label="bctciv_DispositionsBySeriesDisclosureLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="bctciv_DispositionsBySeriesDisclosureLineItems" xlink:to="bctciv_ScheduleOfDispositionsBySeriesTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingPartnershipInterestTransferred" xlink:label="bctciv_OperatingPartnershipInterestTransferred"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_DispositionsBySeriesDisclosureLineItems" xlink:to="bctciv_OperatingPartnershipInterestTransferred" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SaleOfUnderlyingOperatingPartnership" xlink:label="bctciv_SaleOfUnderlyingOperatingPartnership"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_DispositionsBySeriesDisclosureLineItems" xlink:to="bctciv_SaleOfUnderlyingOperatingPartnership" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromSaleOfEquityMethodInvestments" xlink:label="us-gaap_ProceedsFromSaleOfEquityMethodInvestments"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_DispositionsBySeriesDisclosureLineItems" xlink:to="us-gaap_ProceedsFromSaleOfEquityMethodInvestments" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_PaymentsForProceedsFromSaleOfEquityMethodInvestments" xlink:label="bctciv_PaymentsForProceedsFromSaleOfEquityMethodInvestments"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_DispositionsBySeriesDisclosureLineItems" xlink:to="bctciv_PaymentsForProceedsFromSaleOfEquityMethodInvestments" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GainLossOnSaleOfInvestments" xlink:label="us-gaap_GainLossOnSaleOfInvestments"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_DispositionsBySeriesDisclosureLineItems" xlink:to="us-gaap_GainLossOnSaleOfInvestments" priority="1" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:role="http://www.bostoncapital.com/role/DisclosureInvestmentsInOperatingLimitedPartnershipsCurrentFinancialResultsAvailableForOperatingPartnershipsDetails" xlink:type="extended" xlink:title="40303 - Disclosure - INVESTMENTS IN OPERATING LIMITED PARTNERSHIPS - Current financial results available for the Operating Partnerships (Details)"> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTable" xlink:label="bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="15" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="16" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="17" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="20" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="21" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="22" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="23" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="24" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="25" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="26" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="27" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SummarizedStatementOfOperationsInOperatingPartnershipsLineItems" xlink:label="bctciv_SummarizedStatementOfOperationsInOperatingPartnershipsLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="bctciv_SummarizedStatementOfOperationsInOperatingPartnershipsLineItems" xlink:to="bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenuesAbstract" xlink:label="us-gaap_RevenuesAbstract"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_SummarizedStatementOfOperationsInOperatingPartnershipsLineItems" xlink:to="us-gaap_RevenuesAbstract" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingPartnershipsRentalIncome" xlink:label="bctciv_OperatingPartnershipsRentalIncome"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="us-gaap_RevenuesAbstract" xlink:to="bctciv_OperatingPartnershipsRentalIncome" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingPartnershipsInterestAndOtherIncome" xlink:label="bctciv_OperatingPartnershipsInterestAndOtherIncome"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="us-gaap_RevenuesAbstract" xlink:to="bctciv_OperatingPartnershipsInterestAndOtherIncome" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingPartnershipsRevenues" xlink:label="bctciv_OperatingPartnershipsRevenues"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="us-gaap_RevenuesAbstract" xlink:to="bctciv_OperatingPartnershipsRevenues" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ExpensesAbstract" xlink:label="bctciv_ExpensesAbstract"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_SummarizedStatementOfOperationsInOperatingPartnershipsLineItems" xlink:to="bctciv_ExpensesAbstract" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingPartnershipsInterestExpenses" xlink:label="bctciv_OperatingPartnershipsInterestExpenses"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_ExpensesAbstract" xlink:to="bctciv_OperatingPartnershipsInterestExpenses" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingPartnershipsDepreciationAndAmortization" xlink:label="bctciv_OperatingPartnershipsDepreciationAndAmortization"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_ExpensesAbstract" xlink:to="bctciv_OperatingPartnershipsDepreciationAndAmortization" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingPartnershipsOperatingExpenses" xlink:label="bctciv_OperatingPartnershipsOperatingExpenses"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_ExpensesAbstract" xlink:to="bctciv_OperatingPartnershipsOperatingExpenses" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingPartnershipsTotalExpenses" xlink:label="bctciv_OperatingPartnershipsTotalExpenses"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_ExpensesAbstract" xlink:to="bctciv_OperatingPartnershipsTotalExpenses" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingPartnershipsTaxesAndInsurance" xlink:label="bctciv_OperatingPartnershipsTaxesAndInsurance"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_ExpensesAbstract" xlink:to="bctciv_OperatingPartnershipsTaxesAndInsurance" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingPartnershipsRepairsAndMaintenance" xlink:label="bctciv_OperatingPartnershipsRepairsAndMaintenance"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_ExpensesAbstract" xlink:to="bctciv_OperatingPartnershipsRepairsAndMaintenance" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingPartnershipsOtherExpenses" xlink:label="bctciv_OperatingPartnershipsOtherExpenses"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_ExpensesAbstract" xlink:to="bctciv_OperatingPartnershipsOtherExpenses" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingPartnershipsNetIncomeLoss" xlink:label="bctciv_OperatingPartnershipsNetIncomeLoss"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_SummarizedStatementOfOperationsInOperatingPartnershipsLineItems" xlink:to="bctciv_OperatingPartnershipsNetIncomeLoss" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingPartnershipsNetIncomeLossAllocatedToParent" xlink:label="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToParent"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_SummarizedStatementOfOperationsInOperatingPartnershipsLineItems" xlink:to="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToParent" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingPartnershipsNetIncomeLossAllocatedToOtherPartners" xlink:label="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToOtherPartners"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_SummarizedStatementOfOperationsInOperatingPartnershipsLineItems" xlink:to="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToOtherPartners" priority="1" use="optional"/> |
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| <definitionLink xlink:role="http://www.bostoncapital.com/role/DisclosureInvestmentsInOperatingLimitedPartnershipsContributionsPayableDetails" xlink:type="extended" xlink:title="40304 - Disclosure - INVESTMENTS IN OPERATING LIMITED PARTNERSHIPS - Contributions payable (Details)"> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ScheduleOfContributionsPayableTable" xlink:label="bctciv_ScheduleOfContributionsPayableTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="bctciv_ScheduleOfContributionsPayableTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ContributionsPayableLineItems" xlink:label="bctciv_ContributionsPayableLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="bctciv_ContributionsPayableLineItems" xlink:to="bctciv_ScheduleOfContributionsPayableTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_CapitalContributionsPayable" xlink:label="bctciv_CapitalContributionsPayable"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_ContributionsPayableLineItems" xlink:to="bctciv_CapitalContributionsPayable" priority="1" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:role="http://www.bostoncapital.com/role/DisclosureInvestmentsInOperatingLimitedPartnershipsFundSInvestmentsDetails" xlink:type="extended" xlink:title="40305 - Disclosure - INVESTMENTS IN OPERATING LIMITED PARTNERSHIPS - Fund's investments (Details)"> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ScheduleOfFundsInvestmentsInOperatingLimitedPartnershipsTable" xlink:label="bctciv_ScheduleOfFundsInvestmentsInOperatingLimitedPartnershipsTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="bctciv_ScheduleOfFundsInvestmentsInOperatingLimitedPartnershipsTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="15" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="16" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="17" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="20" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="21" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="22" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="23" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="24" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="25" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="26" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="27" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:label="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_ScheduleOfFundsInvestmentsInOperatingLimitedPartnershipsTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_CapitalAccountContributionsPaidAndToBePaidToOperatingLimitedPartnership" xlink:label="bctciv_CapitalAccountContributionsPaidAndToBePaidToOperatingLimitedPartnership"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_CapitalAccountContributionsPaidAndToBePaidToOperatingLimitedPartnership" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_AcquisitionCostsOfOperatingLimitedPartnerships" xlink:label="bctciv_AcquisitionCostsOfOperatingLimitedPartnerships"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_AcquisitionCostsOfOperatingLimitedPartnerships" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_CumulativeDistributions" xlink:label="bctciv_CumulativeDistributions"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_CumulativeDistributions" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_CumulativeImpairmentLossInInvestment" xlink:label="bctciv_CumulativeImpairmentLossInInvestment"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_CumulativeImpairmentLossInInvestment" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_CumulativeLosses" xlink:label="bctciv_CumulativeLosses"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_CumulativeLosses" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RealEstateInvestmentPropertyNet" xlink:label="us-gaap_RealEstateInvestmentPropertyNet"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="us-gaap_RealEstateInvestmentPropertyNet" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_CapitalAccountContributionsFundPaidToOperatingLimitedPartnership" xlink:label="bctciv_CapitalAccountContributionsFundPaidToOperatingLimitedPartnership"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_CapitalAccountContributionsFundPaidToOperatingLimitedPartnership" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_CapitalAcquisitionCostInNetAssetsOfOperatingLimitedPartnership" xlink:label="bctciv_CapitalAcquisitionCostInNetAssetsOfOperatingLimitedPartnership"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_CapitalAcquisitionCostInNetAssetsOfOperatingLimitedPartnership" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_CumulativeLossesFromOperatingLimitedPartnershipsNotIncludedInCapital" xlink:label="bctciv_CumulativeLossesFromOperatingLimitedPartnershipsNotIncludedInCapital"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_CumulativeLossesFromOperatingLimitedPartnershipsNotIncludedInCapital" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_IncomeLossFromEquityMethodInvestmentsNotRecognized" xlink:label="bctciv_IncomeLossFromEquityMethodInvestmentsNotRecognized"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_IncomeLossFromEquityMethodInvestmentsNotRecognized" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_LowIncomeHousingTaxCreditAdjustment" xlink:label="bctciv_LowIncomeHousingTaxCreditAdjustment"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_LowIncomeHousingTaxCreditAdjustment" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OtherLossInInvestment" xlink:label="bctciv_OtherLossInInvestment"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_OtherLossInInvestment" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingLimitedPartnershipsPartnersCapitalPreferredPartners" xlink:label="bctciv_OperatingLimitedPartnershipsPartnersCapitalPreferredPartners"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_FundsInvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_OperatingLimitedPartnershipsPartnersCapitalPreferredPartners" priority="1" use="optional"/> |
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| <definitionLink xlink:role="http://www.bostoncapital.com/role/DisclosureInvestmentsInOperatingLimitedPartnershipsCombinedSummarizedBalanceSheetsDetails" xlink:type="extended" xlink:title="40306 - Disclosure - INVESTMENTS IN OPERATING LIMITED PARTNERSHIPS - Combined summarized balance sheets (Details)"> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ScheduleOfSummarizedBalanceSheetsInOperatingPartnershipsTable" xlink:label="bctciv_ScheduleOfSummarizedBalanceSheetsInOperatingPartnershipsTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="bctciv_ScheduleOfSummarizedBalanceSheetsInOperatingPartnershipsTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="15" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="16" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="17" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="20" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="21" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="22" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="23" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="24" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="25" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="26" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="27" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SummarizedBalanceSheetsInOperatingPartnershipsLineItems" xlink:label="bctciv_SummarizedBalanceSheetsInOperatingPartnershipsLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="bctciv_SummarizedBalanceSheetsInOperatingPartnershipsLineItems" xlink:to="bctciv_ScheduleOfSummarizedBalanceSheetsInOperatingPartnershipsTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsAbstract" xlink:label="us-gaap_AssetsAbstract"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_SummarizedBalanceSheetsInOperatingPartnershipsLineItems" xlink:to="us-gaap_AssetsAbstract" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingLimitedPartnershipsBuildingsAndImprovementNet" xlink:label="bctciv_OperatingLimitedPartnershipsBuildingsAndImprovementNet"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="us-gaap_AssetsAbstract" xlink:to="bctciv_OperatingLimitedPartnershipsBuildingsAndImprovementNet" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingLimitedPartnershipsLand" xlink:label="bctciv_OperatingLimitedPartnershipsLand"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="us-gaap_AssetsAbstract" xlink:to="bctciv_OperatingLimitedPartnershipsLand" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingLimitedPartnershipsOtherAssets" xlink:label="bctciv_OperatingLimitedPartnershipsOtherAssets"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="us-gaap_AssetsAbstract" xlink:to="bctciv_OperatingLimitedPartnershipsOtherAssets" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingLimitedPartnershipsAssets" xlink:label="bctciv_OperatingLimitedPartnershipsAssets"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="us-gaap_AssetsAbstract" xlink:to="bctciv_OperatingLimitedPartnershipsAssets" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAbstract" xlink:label="us-gaap_LiabilitiesAbstract"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_SummarizedBalanceSheetsInOperatingPartnershipsLineItems" xlink:to="us-gaap_LiabilitiesAbstract" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingLimitedPartnershipsMortgagesAndConstructionLoansPayable" xlink:label="bctciv_OperatingLimitedPartnershipsMortgagesAndConstructionLoansPayable"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="us-gaap_LiabilitiesAbstract" xlink:to="bctciv_OperatingLimitedPartnershipsMortgagesAndConstructionLoansPayable" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingLimitedPartnershipsAccountsPayableAndAccruedExpenses" xlink:label="bctciv_OperatingLimitedPartnershipsAccountsPayableAndAccruedExpenses"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="us-gaap_LiabilitiesAbstract" xlink:to="bctciv_OperatingLimitedPartnershipsAccountsPayableAndAccruedExpenses" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingLimitedPartnershipsOtherLiabilities" xlink:label="bctciv_OperatingLimitedPartnershipsOtherLiabilities"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="us-gaap_LiabilitiesAbstract" xlink:to="bctciv_OperatingLimitedPartnershipsOtherLiabilities" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingLimitedPartnershipsLiabilities" xlink:label="bctciv_OperatingLimitedPartnershipsLiabilities"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="us-gaap_LiabilitiesAbstract" xlink:to="bctciv_OperatingLimitedPartnershipsLiabilities" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PartnersCapitalAbstract" xlink:label="us-gaap_PartnersCapitalAbstract"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_SummarizedBalanceSheetsInOperatingPartnershipsLineItems" xlink:to="us-gaap_PartnersCapitalAbstract" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingLimitedPartnershipsPartnersCapitalPreferredPartners" xlink:label="bctciv_OperatingLimitedPartnershipsPartnersCapitalPreferredPartners"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="us-gaap_PartnersCapitalAbstract" xlink:to="bctciv_OperatingLimitedPartnershipsPartnersCapitalPreferredPartners" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingLimitedPartnershipsPartnersCapitalOthers" xlink:label="bctciv_OperatingLimitedPartnershipsPartnersCapitalOthers"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="us-gaap_PartnersCapitalAbstract" xlink:to="bctciv_OperatingLimitedPartnershipsPartnersCapitalOthers" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingLimitedPartnershipsPartnersCapital" xlink:label="bctciv_OperatingLimitedPartnershipsPartnersCapital"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="us-gaap_PartnersCapitalAbstract" xlink:to="bctciv_OperatingLimitedPartnershipsPartnersCapital" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_OperatingLimitedPartnershipsLiabilitiesAndStockholdersEquity" xlink:label="bctciv_OperatingLimitedPartnershipsLiabilitiesAndStockholdersEquity"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="us-gaap_PartnersCapitalAbstract" xlink:to="bctciv_OperatingLimitedPartnershipsLiabilitiesAndStockholdersEquity" priority="1" use="optional"/> |
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| <definitionLink xlink:role="http://www.bostoncapital.com/role/DisclosureReconciliationOfFinancialStatementNetIncomeLossToTaxReturnDetails" xlink:type="extended" xlink:title="40401 - Disclosure - RECONCILIATION OF FINANCIAL STATEMENT NET INCOME (LOSS) TO TAX RETURN (Details)"> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ScheduleOfReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureTable" xlink:label="bctciv_ScheduleOfReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="bctciv_ScheduleOfReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="15" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="16" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="17" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="20" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="21" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="22" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="23" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="24" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="25" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="26" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="27" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureLineItems" xlink:label="bctciv_ReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="bctciv_ReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureLineItems" xlink:to="bctciv_ScheduleOfReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_ReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureLineItems" xlink:to="us-gaap_NetIncomeLoss" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_IncomeTaxReconciliationRentsReceivedInAdvance" xlink:label="bctciv_IncomeTaxReconciliationRentsReceivedInAdvance"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_ReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureLineItems" xlink:to="bctciv_IncomeTaxReconciliationRentsReceivedInAdvance" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_FundManagementFeeAmountDeclared" xlink:label="bctciv_FundManagementFeeAmountDeclared"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_ReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureLineItems" xlink:to="bctciv_FundManagementFeeAmountDeclared" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther" xlink:label="us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_ReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureLineItems" xlink:to="us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary" xlink:label="us-gaap_IncomeTaxReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_ReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureLineItems" xlink:to="us-gaap_IncomeTaxReconciliationEquityInEarningsLossesOfUnconsolidatedSubsidiary" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpenseDepreciation" xlink:label="us-gaap_IncomeTaxReconciliationNondeductibleExpenseDepreciation"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_ReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureLineItems" xlink:to="us-gaap_IncomeTaxReconciliationNondeductibleExpenseDepreciation" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:label="us-gaap_IncomeTaxReconciliationOtherAdjustments"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_ReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureLineItems" xlink:to="us-gaap_IncomeTaxReconciliationOtherAdjustments" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TotalIncomeLossForTaxReturn" xlink:label="bctciv_TotalIncomeLossForTaxReturn"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_ReconciliationOfFinancialStatementNetIncomeLossToIncomeTaxReturnDisclosureLineItems" xlink:to="bctciv_TotalIncomeLossForTaxReturn" priority="1" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:role="http://www.bostoncapital.com/role/DisclosureReconciliationOfFinancialStatementNetIncomeLossToTaxReturnInvestmentsInOperatingLimitedPartnershipsDetails" xlink:type="extended" xlink:title="40402 - Disclosure - RECONCILIATION OF FINANCIAL STATEMENT NET INCOME (LOSS) TO TAX RETURN - Investments in operating limited partnerships (Details)"> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ScheduleOfInvestmentsInOperatingLimitedPartnershipsForTaxPurposesAndFinancialStatementPurposesDisclosureTable" xlink:label="bctciv_ScheduleOfInvestmentsInOperatingLimitedPartnershipsForTaxPurposesAndFinancialStatementPurposesDisclosureTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="bctciv_ScheduleOfInvestmentsInOperatingLimitedPartnershipsForTaxPurposesAndFinancialStatementPurposesDisclosureTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="10" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="11" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="12" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="13" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="14" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="15" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="16" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="17" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="18" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtySevenMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="19" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="20" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="21" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="22" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="23" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="24" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="25" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFourMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="26" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="27" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortySixMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_InvestmentsInOperatingLimitedPartnershipsForTaxPurposesAndFinancialStatementPurposesDisclosureLineItems" xlink:label="bctciv_InvestmentsInOperatingLimitedPartnershipsForTaxPurposesAndFinancialStatementPurposesDisclosureLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="bctciv_InvestmentsInOperatingLimitedPartnershipsForTaxPurposesAndFinancialStatementPurposesDisclosureLineItems" xlink:to="bctciv_ScheduleOfInvestmentsInOperatingLimitedPartnershipsForTaxPurposesAndFinancialStatementPurposesDisclosureTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_RealEstateInvestmentPropertyNetAsPerTaxReturn" xlink:label="bctciv_RealEstateInvestmentPropertyNetAsPerTaxReturn"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_InvestmentsInOperatingLimitedPartnershipsForTaxPurposesAndFinancialStatementPurposesDisclosureLineItems" xlink:to="bctciv_RealEstateInvestmentPropertyNetAsPerTaxReturn" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_IncomeLossFromEquityMethodInvestmentsNotRecognized" xlink:label="bctciv_IncomeLossFromEquityMethodInvestmentsNotRecognized"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_InvestmentsInOperatingLimitedPartnershipsForTaxPurposesAndFinancialStatementPurposesDisclosureLineItems" xlink:to="bctciv_IncomeLossFromEquityMethodInvestmentsNotRecognized" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_CumulativeImpairmentLossInInvestment" xlink:label="bctciv_CumulativeImpairmentLossInInvestment"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_InvestmentsInOperatingLimitedPartnershipsForTaxPurposesAndFinancialStatementPurposesDisclosureLineItems" xlink:to="bctciv_CumulativeImpairmentLossInInvestment" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_CumulativeLossesFromOperatingLimitedPartnershipsNotIncludedInCapital" xlink:label="bctciv_CumulativeLossesFromOperatingLimitedPartnershipsNotIncludedInCapital"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_InvestmentsInOperatingLimitedPartnershipsForTaxPurposesAndFinancialStatementPurposesDisclosureLineItems" xlink:to="bctciv_CumulativeLossesFromOperatingLimitedPartnershipsNotIncludedInCapital" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherInvestments" xlink:label="us-gaap_OtherInvestments"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_InvestmentsInOperatingLimitedPartnershipsForTaxPurposesAndFinancialStatementPurposesDisclosureLineItems" xlink:to="us-gaap_OtherInvestments" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_IncomeLossOnOtherInvestments" xlink:label="bctciv_IncomeLossOnOtherInvestments"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_InvestmentsInOperatingLimitedPartnershipsForTaxPurposesAndFinancialStatementPurposesDisclosureLineItems" xlink:to="bctciv_IncomeLossOnOtherInvestments" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RealEstateInvestmentPropertyNet" xlink:label="us-gaap_RealEstateInvestmentPropertyNet"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_InvestmentsInOperatingLimitedPartnershipsForTaxPurposesAndFinancialStatementPurposesDisclosureLineItems" xlink:to="us-gaap_RealEstateInvestmentPropertyNet" priority="1" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:role="http://www.bostoncapital.com/role/DisclosureInvestmentsInOperatingLimitedPartnershipsAdditionalInformationDetails" xlink:type="extended" xlink:title="9940306 - Disclosure - INVESTMENTS IN OPERATING LIMITED PARTNERSHIPS - Additional Information (Details)"> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_InvestmentsInOperatingLimitedPartnershipsTable" xlink:label="bctciv_InvestmentsInOperatingLimitedPartnershipsTable"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" order="1" xlink:from="bctciv_InvestmentsInOperatingLimitedPartnershipsTable" xlink:to="bctciv_TaxCreditSeriesAxis" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" order="1" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesDomain" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="1" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyNineMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyOneMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="4" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesThirtyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="5" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="6" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyTwoMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="7" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyThreeMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="8" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesFortyFiveMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="9" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_SeriesTwentyEightMember" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_InvestmentsInOperatingLimitedPartnershipsLineItems" xlink:label="bctciv_InvestmentsInOperatingLimitedPartnershipsLineItems"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" order="1" xlink:from="bctciv_InvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_InvestmentsInOperatingLimitedPartnershipsTable" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_WriteOffOfCapitalContributionPayable" xlink:label="bctciv_WriteOffOfCapitalContributionPayable"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="2" xlink:from="bctciv_InvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_WriteOffOfCapitalContributionPayable" priority="1" use="optional"/> |
| | <loc xlink:type="locator" xlink:href="bctciv-20220331.xsd#bctciv_ReceivableFromSaleOfEquityInvestment" xlink:label="bctciv_ReceivableFromSaleOfEquityInvestment"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" order="3" xlink:from="bctciv_InvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_ReceivableFromSaleOfEquityInvestment" priority="1" use="optional"/> |
| | </definitionLink> |
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