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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-02-09</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001397403</issuerCik>
        <issuerName>IMH Financial Corp</issuerName>
        <issuerTradingSymbol>NONE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000019617</rptOwnerCik>
            <rptOwnerName>JPMORGAN CHASE &amp; CO</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>270 PARK AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10017</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <officerTitle></officerTitle>
            <otherText>Director by Deputization</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001364743</rptOwnerCik>
            <rptOwnerName>JPMorgan Chase Funding Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>270 PARK AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10017</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Series B-2 Cumulative Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2018-02-09</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2352941</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2352941</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footenote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Warrants</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.25</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2018-02-09</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>600000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F4"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>600000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>600000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footenote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Series B-3 Cumulative Convertible Preferred Stock (&quot;Series B-3 Preferred Stock&quot;) is convertible at any time into the Issuer's common stock, par value $0.01 per share (&quot;Common Stock&quot;). Each share of Series B-3 Preferred Stock is convertible, at the election of the holder, into a number of shares of Common Stock determined by dividing (i) the sum of (a) $3.40 and (b) all accrued and unpaid dividends on such Series B-3 Preferred Stock by (ii) the then effective conversion price. Initially, each share of Series B-3 Preferred Stock is convertible into one share of Common Stock. The conversion price, and number of shares issuable upon conversion of Series B-3 Preferred Stock, are subject to adjustment as provided in the Second Amended and Restated Certificate of Designation of Series B-1 Cumulative Convertible Preferred Stock, Series B-2 Cumulative Convertible Preferred Stock and Series B-3 Cumulative Convertible Preferred Stock of the Issuer (&quot;Restated Certificate of Designation&quot;).</footnote>
        <footnote id="F2">Series B-3 Preferred Stock will automatically be converted into shares of Common Stock at the then effective conversion price upon the closing of a sale of shares of Common Stock at a price equal to or greater than two and a quarter times (2.25x) $3.2171 (subject to adjustment in accordance with the Restated Certificate of Designation), in a firm commitment underwritten public offering and listing of the Common Stock on a national securities exchange, pursuant to an effective registration statement under the Securities Act of 1933, as amended, resulting in at least $75,000,000 of gross proceeds to the Issuer.</footnote>
        <footnote id="F3">The securities reported herein are directly owned by JPMorgan Chase Funding Inc., a wholly owned subsidiary of JPMorgan Chase &amp; Co. JPMorgan Chase &amp; Co. disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein, if any.</footnote>
        <footnote id="F4">These warrants shall be exercisable from and after February 9, 2021 through February 8, 2023.</footnote>
    </footnotes>

    <remarks>On April 24, 2017, JPMorgan Chase Funding Inc. appointed Chadwick S. Parson as a member of the board of directors of the Issuer. JPMorgan Chase Funding Inc. may therefore be deemed a director by deputization.</remarks>

    <ownerSignature>
        <signatureName>JPMorgan Chase &amp; Co., by /s/ Michael T. Lees, Executive Director</signatureName>
        <signatureDate>2018-02-13</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>JPMorgan Chase Funding Inc., by /s/ Chadwick S. Parson, Managing Director</signatureName>
        <signatureDate>2018-02-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
