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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2017-04-18</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001000298</issuerCik>
        <issuerName>IMPAC MORTGAGE HOLDINGS INC</issuerName>
        <issuerTradingSymbol>IMH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001705243</rptOwnerCik>
            <rptOwnerName>Gamebusters, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>9505 HILLWOOD DR., SUITE 100</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LAS VEGAS</rptOwnerCity>
            <rptOwnerState>NV</rptOwnerState>
            <rptOwnerZipCode>89134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2086098</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">As previously reported on Amendment No. 4 to Schedule 13D filed with the Securities and Exchange Commission by Richard H. Pickup and Reporting Person on April 21, 2017, Reporting Person is the sole general partner of (i) Dito Caree LP, which directly owns 1,191,153 shares of the Common Stock, over all of which shares Reporting Person, acting through Richard H. Pickup, its sole officer and director, exercises sole investment and voting power; and (ii) Dito Devcar LP, which directly owns 894,945 shares of the Common Stock, over all of which shares Reporting Person, acting through Richard H. Pickup, its sole officer and director, exercises sole investment and voting power.  In accordance with Instruction 5(b)(iv) to Form 3, the entire amount of the Issuer's securities owned directly by Dito Caree LP and Dito Devcar LP is reported herein.</footnote>
        <footnote id="F2">(Continued from Footnote 1) For purposes of Section 16 of the Securities Exchange Act of 1934, Reporting Person disclaims beneficial ownership of all such securities, except to the extent of its indirect pecuniary interest therein, if any, and this report shall not be deemed an admission that Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Richard H. Pickup, President</signatureName>
        <signatureDate>2017-04-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
