| | | | | | | | | | | | | | | | | | | | | | |
| <?xml version="1.0" encoding="windows-1252"?> |
| <ownershipDocument> |
| <schemaVersion> X0306 </schemaVersion> |
| <documentType> 4 </documentType> |
| <periodOfReport> 2022-06-09 </periodOfReport> |
| <notSubjectToSection16> 0 </notSubjectToSection16> |
| <issuer> |
| | <issuerCik> 0001759824 </issuerCik> |
| | <issuerName> ALTA EQUIPMENT GROUP INC. </issuerName> |
| | <issuerTradingSymbol> ALTG </issuerTradingSymbol> |
| | </issuer> |
| <reportingOwner> |
| | <reportingOwnerId> |
| | | <rptOwnerCik> 0001053465 </rptOwnerCik> |
| | | <rptOwnerName> STUDDERT ANDREW P </rptOwnerName> |
| | | </reportingOwnerId> |
| | <reportingOwnerAddress> |
| | | <rptOwnerStreet1> C/O ALTA EQUIPMENT GROUP </rptOwnerStreet1> |
| | | <rptOwnerStreet2> 13211 MERRIMAN ROAD </rptOwnerStreet2> |
| | | <rptOwnerCity> LIVONIA </rptOwnerCity> |
| | | <rptOwnerState> MI </rptOwnerState> |
| | | <rptOwnerZipCode> 48150 </rptOwnerZipCode> |
| | | <rptOwnerStateDescription></rptOwnerStateDescription> |
| | | </reportingOwnerAddress> |
| | <reportingOwnerRelationship> |
| | | <isDirector> 1 </isDirector> |
| | | <isOfficer> 0 </isOfficer> |
| | | <isTenPercentOwner> 0 </isTenPercentOwner> |
| | | <isOther> 0 </isOther> |
| | | </reportingOwnerRelationship> |
| | </reportingOwner> |
| <nonDerivativeTable> |
| | <nonDerivativeTransaction> |
| | | <securityTitle> |
| <value> Common Stock </value> |
| <footnoteId id="F1"/> |
| </securityTitle> |
| | | <transactionDate> |
| <value> 2022-06-09 </value> |
| </transactionDate> |
| | | <deemedExecutionDate></deemedExecutionDate> |
| | | <transactionCoding> |
| <transactionFormType> 4 </transactionFormType> |
| <transactionCode> A </transactionCode> |
| <equitySwapInvolved> 0 </equitySwapInvolved> |
| </transactionCoding> |
| | | <transactionTimeliness> |
| <value></value> |
| </transactionTimeliness> |
| | | <transactionAmounts> |
| <transactionShares> |
| <value> 9326 </value> |
| </transactionShares> |
| <transactionPricePerShare> |
| <footnoteId id="F1"/> |
| </transactionPricePerShare> |
| <transactionAcquiredDisposedCode> |
| <value> A </value> |
| </transactionAcquiredDisposedCode> |
| </transactionAmounts> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 47609 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </nonDerivativeTransaction> |
| | </nonDerivativeTable> |
| <footnotes> |
| | <footnote id="F1"> The reporting person was granted such time-based restricted stock units ("RSUs") for the annual director grant on the date of the 2022 annual shareholder meeting on June 9, 2022. Each RSU represents the right to receive one share of Common Stock. Subject to the director's election to defer the receipt of the RSUs to the director's termination of service as a director, the RSUs vest 1/12th each month and fully vest on the date of the annual meeting in the following year. </footnote> |
| | </footnotes> |
| <remarks></remarks> |
| <ownerSignature> |
| | <signatureName> /s/ Joel Rubinstein, by Power of Attorney on behalf of Andrew Studdert </signatureName> |
| | <signatureDate> 2022-06-13 </signatureDate> |
| | </ownerSignature> |
| </ownershipDocument> |
