<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-07-02</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001286139</issuerCik>
        <issuerName>LEGALZOOM.COM, INC.</issuerName>
        <issuerTradingSymbol>LZ</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001869984</rptOwnerCik>
            <rptOwnerName>LucasZoom LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3000 SAND HILL ROAD, BUILDING 1,</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 170</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001575670</rptOwnerCik>
            <rptOwnerName>Permira V L.P.2</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>P.O. BOX 503, TRAFALGAR COURT, LES</rptOwnerStreet1>
            <rptOwnerStreet2>BANQUES, ST PETER PORT</rptOwnerStreet2>
            <rptOwnerCity></rptOwnerCity>
            <rptOwnerState>Y7</rptOwnerState>
            <rptOwnerZipCode>GY1 6DJ</rptOwnerZipCode>
            <rptOwnerStateDescription>GUERNSEY</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001870082</rptOwnerCik>
            <rptOwnerName>Permira V G.P. L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>P.O. BOX 503, TRAFALGAR COURT, LES</rptOwnerStreet1>
            <rptOwnerStreet2>BANQUES, ST PETER PORT</rptOwnerStreet2>
            <rptOwnerCity></rptOwnerCity>
            <rptOwnerState>Y7</rptOwnerState>
            <rptOwnerZipCode>GY1 6DJ</rptOwnerZipCode>
            <rptOwnerStateDescription>GUERNSEY</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001870063</rptOwnerCik>
            <rptOwnerName>Permira V G.P. Ltd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>P.O. BOX 503, TRAFALGAR COURT, LES</rptOwnerStreet1>
            <rptOwnerStreet2>BANQUES, ST PETER PORT</rptOwnerStreet2>
            <rptOwnerCity></rptOwnerCity>
            <rptOwnerState>Y7</rptOwnerState>
            <rptOwnerZipCode>GY1 6DJ</rptOwnerZipCode>
            <rptOwnerStateDescription>GUERNSEY</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001869961</rptOwnerCik>
            <rptOwnerName>Lucazoom Sarl</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>488, ROUTE DE LONGWY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity></rptOwnerCity>
            <rptOwnerState>N4</rptOwnerState>
            <rptOwnerZipCode>L-1940</rptOwnerZipCode>
            <rptOwnerStateDescription>LUXEMBOURG</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-07-02</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>36537688</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>38012988</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Series A Redeemable Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.00</value>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2021-07-02</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>18268844</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>36537688</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Upon completion of the Issuer's initial public offering and concurrent private placement, the Issuer's Series A redeemable convertible preferred stock converted into the Issuer's common stock on a one-for-two basis.</footnote>
        <footnote id="F2">Following the conversion described in footnote (1), LucasZoom, LLC (&quot;LucasZoom&quot;) is the record holder of 38,012,988 shares of the Issuer's common stock (the &quot;Subject Securities&quot;).  Lucazoom S.a.r.l. (&quot;Lucazoom&quot;) is the sole member of LucasZoom. Permira V L.P.2 (&quot;Permira V&quot;) is the controlling shareholder of Lucazoom.  Permira V GP L.P. (&quot;Permira V GP&quot;) is the general partner of Permira V. Permira V GP Limited (together with Lucazoom, Permira V and Permira V GP, the &quot;Permira Entities&quot;) is the general partner of Permira V GP.</footnote>
        <footnote id="F3">The Permira Entities may be deemed to share voting and dispositive power over the Subject Securities held by LucasZoom but disclaim such beneficial ownership except to the extent of their pecuniary interest therein.</footnote>
    </footnotes>

    <remarks>Dipan Patel and Brian Ruder currently serve on the board of directors of the Issuer as the Reporting Persons' representatives, and therefore each of the Reporting Persons may be deemed a &quot;director by deputization&quot; of the Issuer.</remarks>

    <ownerSignature>
        <signatureName>/s/ Brian Ruder By: Brian Ruder, President, Chief Executive Officer and Secretary, LucasZoom, LLC</signatureName>
        <signatureDate>2021-07-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Severine Michel By: Severine Michel, Manager, Lucazoom S.a.r.l</signatureName>
        <signatureDate>2021-07-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Julie Preece By: Julie Preece, Director for Permira V GP Limited, general partner of Permira V GP L.P., general partner of Permira V L.P.2</signatureName>
        <signatureDate>2021-07-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Julie Preece By: Julie Preece, Director for Permira V GP Limited, general partner of Permira V GP L.P.</signatureName>
        <signatureDate>2021-07-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Julie Preece By: Julie Preece Director for Permira V GP Limited</signatureName>
        <signatureDate>2021-07-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
