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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2021-08-03</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001818502</issuerCik>
        <issuerName>OppFi Inc.</issuerName>
        <issuerTradingSymbol>OPFI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001464694</rptOwnerCik>
            <rptOwnerName>Blackstone Holdings I L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BLACKSTONE INC.</rptOwnerStreet1>
            <rptOwnerStreet2>345 PARK AVENUE, 28TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10154</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001876914</rptOwnerCik>
            <rptOwnerName>Blackstone Aqua Master Sub-Fund, a sub-fund of Blackstone Global Master Fund ICAV</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BLACKSTONE INC.</rptOwnerStreet1>
            <rptOwnerStreet2>345 PARK AVENUE, 28TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10154</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001728531</rptOwnerCik>
            <rptOwnerName>Blackstone Alternative Solutions L.L.C.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BLACKSTONE INC.</rptOwnerStreet1>
            <rptOwnerStreet2>345 PARK AVENUE, 28TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10154</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001464695</rptOwnerCik>
            <rptOwnerName>Blackstone Holdings I/II GP L.L.C.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BLACKSTONE INC.</rptOwnerStreet1>
            <rptOwnerStreet2>345 PARK AVENUE, 28TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10154</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001393818</rptOwnerCik>
            <rptOwnerName>Blackstone Inc</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>345 PARK AVENUE, 28TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10154</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001404071</rptOwnerCik>
            <rptOwnerName>Blackstone Group Management L.L.C.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BLACKSTONE INC.</rptOwnerStreet1>
            <rptOwnerStreet2>345 PARK AVENUE, 28TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10154</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001070844</rptOwnerCik>
            <rptOwnerName>SCHWARZMAN STEPHEN A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BLACKSTONE INC.</rptOwnerStreet1>
            <rptOwnerStreet2>345 PARK AVENUE, 28TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10154</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1120000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Warrants (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>11.50</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F4"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>560000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Reflects securities of OppFi Inc. (the &quot;Issuer&quot;) directly held by Blackstone Aqua Master Sub-Fund, a sub-fund of Blackstone Global Master Fund ICAV (&quot;Aqua Fund&quot;).  Blackstone Alternative Solutions L.L.C. (&quot;BAS&quot;) is the investment manager of the Aqua Fund. Blackstone Holdings I L.P. (&quot;Holdings I&quot;) is the sole member of BAS. Blackstone Holdings I/II GP L.L.C. (&quot;Holdings GP&quot;) is the general partner of Holdings I. Blackstone Inc. (&quot;Blackstone&quot;) is the sole member of Holdings GP. Blackstone Group Management L.L.C. (&quot;Blackstone Management&quot;) is the sole holder of Series II preferred stock of Blackstone. Blackstone Management is wholly owned by its senior managing directors and controlled by its founder, Stephen A. Schwarzman.</footnote>
        <footnote id="F2">Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.</footnote>
        <footnote id="F3">Each of the Reporting Persons (other than the Aqua Fund to the extent it directly holds securities of the Issuer), disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than the Aqua Fund to the extent it directly holds securities of the Issuer) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all reported securities for purposes of Section 16 or any other purpose.</footnote>
        <footnote id="F4">The warrants have an exercise price of $11.50 per share of Class A Common Stock, subject to adjustment, and are exercisable on the later of 12 months from the closing of the Issuer's initial public offering (which occurred on October 2, 2020) or 30 days after the completion of the Issuer's initial business combination (which occurred on July 20, 2021), and will expire five years after the completion of the Issuer's initial business combination or earlier upon redemption or liquidation.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>BLACKSTONE HOLDINGS I L.P., By:  Blackstone Holdings I/II GP, L.L.C., its general partner, Name: /s/ Tabea Hsi, Title: Senior Managing Director</signatureName>
        <signatureDate>2021-08-13</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>BLACKSTONE GLOBAL MASTER FUND ICAV, ACTING SOLELY ON BEHALF OF ITS SUB-FUND, BLACKSTONE AQUA MASTER SUB-FUND, By:  Blackstone Alternative Solutions L.L.C., its investment manager, Name: /s/ Peter Koffler, Title: Authorized Person</signatureName>
        <signatureDate>2021-08-13</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>BLACKSTONE ALTERNATIVE SOLUTIONS L.L.C, Name: /s/ Peter Koffler, Title: Authorized Person</signatureName>
        <signatureDate>2021-08-13</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>BLACKSTONE HOLDINGS I/II GP L.L.C., Name: /s/ Tabea Hsi, Title: Senior Managing Director</signatureName>
        <signatureDate>2021-08-13</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>BLACKSTONE INC., Name: /s/ Tabea Hsi, Title: Senior Managing Director</signatureName>
        <signatureDate>2021-08-13</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>BLACKSTONE GROUP MANAGEMENT, L.L.C., Name: /s/ Tabea Hsi, Title: Senior Managing Director</signatureName>
        <signatureDate>2021-08-13</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>STEPHEN A. SCHWARZMAN, Name: /s/ Stephen A. Schwarzman</signatureName>
        <signatureDate>2021-08-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
