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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2013-08-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000101199</issuerCik>
        <issuerName>UNITED FIRE GROUP INC</issuerName>
        <issuerTradingSymbol>UFCS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001451182</rptOwnerCik>
            <rptOwnerName>CONNER DAVID E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>118 SECOND AVENUE SE</rptOwnerStreet1>
            <rptOwnerStreet2>P.O. BOX 73909</rptOwnerStreet2>
            <rptOwnerCity>CEDAR RAPIDS</rptOwnerCity>
            <rptOwnerState>IA</rptOwnerState>
            <rptOwnerZipCode>52407-3909</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP/Chief Claims Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2013-08-30</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2013-09-04</value>
                <footnoteId id="F1"/>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>5</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value>E</value>
                <footnoteId id="F3"/>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>5</value>
                    <footnoteId id="F4"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>28.69</value>
                    <footnoteId id="F5"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1608</value>
                    <footnoteId id="F6"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By 401(k) Plan for Self</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>397</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Issuer's Employee Stock Ownership Plan for self</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4005</value>
                    <footnoteId id="F7"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The deemed execution date of this transaction is the settlement date as provided by the Issuer's 401(k) Plan trustee/administrator.</footnote>
        <footnote id="F2">Shares acquired through payroll deduction and participation in Issuer's 401(k) Plan.</footnote>
        <footnote id="F3">This transaction qualifies as a non-discretionary transaction from a tax-qualified plan and is voluntarily reported on Form 4.</footnote>
        <footnote id="F4">Represents the approximate number of shares (excluding frationals) acquired by the trustee/administrator of the Issuer's 401(k) Plan for the Reporting Person's benefit, based on a statement of the trustee/administrator.</footnote>
        <footnote id="F5">The price per share is based on a statement provided by the Issuer's 401(k) Plan trustee/administrator.</footnote>
        <footnote id="F6">Th number of securities shown as being held in, acquired by or disposed of by the Issuer's 401(k) account for the Reporting Person's benefit is the approximate number of shares of common stock (excluding frationals) for which the Reporting Person has the right to direct the vote under the 401(k) plan.  Such shares are not directly allocated to plan participants, but are instead held in a unitized fund consisting primarily of Issuer common stock, together with a small percentage of short-term investments.  Participants acquire units of this fund.</footnote>
        <footnote id="F7">The total number of securities beneficially held directly by the Reporting Person following the reported transaction includes: 796 shares held by Mr. Conner directly; 1,875 shares of restricted stock issued under the Issuer's 2008 Stock Plan which vest, subject to certain conditions, on 02/18/2016 and 1,334 shares of restricted stock issued under the Issuer's 2008 Stock Plan which vest, subject to certain conditions, on 02/15/2018.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ David E. Conner by Michael T. Wilkins, Attorney-in-Fact</signatureName>
        <signatureDate>2013-09-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
