<SEC-DOCUMENT>0000899243-22-015754.txt : 20220427
<SEC-HEADER>0000899243-22-015754.hdr.sgml : 20220427
<ACCEPTANCE-DATETIME>20220427153501
ACCESSION NUMBER:		0000899243-22-015754
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210609
FILED AS OF DATE:		20220427
DATE AS OF CHANGE:		20220427

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Savas Zachary E.
		CENTRAL INDEX KEY:			0001471478

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38864
		FILM NUMBER:		22859234

	MAIL ADDRESS:	
		STREET 1:		3250 W. BIG BEAVER ROAD
		STREET 2:		SUITE 544
		CITY:			TROY
		STATE:			MI
		ZIP:			48084

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ALTA EQUIPMENT GROUP INC.
		CENTRAL INDEX KEY:			0001759824
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-INDUSTRIAL MACHINERY & EQUIPMENT [5084]
		IRS NUMBER:				832583782
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		13211 MERRIMAN ROAD
		CITY:			LIVONIA
		STATE:			MI
		ZIP:			48150
		BUSINESS PHONE:		(248) 449-6700

	MAIL ADDRESS:	
		STREET 1:		13211 MERRIMAN ROAD
		CITY:			LIVONIA
		STATE:			MI
		ZIP:			48150

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	B. Riley Principal Merger Corp.
		DATE OF NAME CHANGE:	20181121
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-06-09</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001759824</issuerCik>
        <issuerName>ALTA EQUIPMENT GROUP INC.</issuerName>
        <issuerTradingSymbol>ALTG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001471478</rptOwnerCik>
            <rptOwnerName>Savas Zachary E.</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>2021-06-09</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>9331</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>56557</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 (&quot;RSUs&quot;) for the annual director grant on the date of the 2021 annual shareholder meeting on June 9, 2021. 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 Zachary Savas</signatureName>
        <signatureDate>2022-04-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
