<SEC-DOCUMENT>0000027996-22-000009.txt : 20220124
<SEC-HEADER>0000027996-22-000009.hdr.sgml : 20220124
<ACCEPTANCE-DATETIME>20220124170413
ACCESSION NUMBER:		0000027996-22-000009
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220121
FILED AS OF DATE:		20220124
DATE AS OF CHANGE:		20220124

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Mathews Michael S
		CENTRAL INDEX KEY:			0001574656

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07945
		FILM NUMBER:		22550169

	MAIL ADDRESS:	
		STREET 1:		3680 VICTORIA STREET NORTH
		CITY:			SHOREVIEW
		STATE:			MN
		ZIP:			55126

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DELUXE CORP
		CENTRAL INDEX KEY:			0000027996
		STANDARD INDUSTRIAL CLASSIFICATION:	BLANKBOOKS, LOOSELEAF BINDERS & BOOKBINDING & RELATED WORK [2780]
		IRS NUMBER:				410216800
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		801 S. MARQUETTE AVE.
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55402
		BUSINESS PHONE:		6514837111

	MAIL ADDRESS:	
		STREET 1:		801 S. MARQUETTE AVE.
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55402

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DELUXE CHECK PRINTERS INC
		DATE OF NAME CHANGE:	19880608
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_164306183693576.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
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<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-01-21</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000027996</issuerCik>
        <issuerName>DELUXE CORP</issuerName>
        <issuerTradingSymbol>DLX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001574656</rptOwnerCik>
            <rptOwnerName>Mathews Michael S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>801 MARQUETTE AVE. S.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MINNEAPOLIS</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55402</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP, Chief Information Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2022-01-21</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5280</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>16399</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2022-01-21</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
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            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
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                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Unit</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.0</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2022-01-21</value>
            </transactionDate>
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                <transactionCode>M</transactionCode>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2022-01-21</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5280.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
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                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
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                </directOrIndirectOwnership>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Transaction reflects vesting and conversion into shares on a one-for-one basis of restricted stock units previously awarded.</footnote>
        <footnote id="F2">Transaction reflects withholding of shares to satisfy tax liabilities associated with vesting of restricted stock units.</footnote>
        <footnote id="F3">Restricted Stock Units were awarded under the Company's Long-Term Incentive Plan resulting from the holder's advance election to receive a portion of the holder's 2019 annual incentive compensation in restricted stock units in lieu of cash, which units vested and were converted into common stock on the second anniversary of the date of grant.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Jeffrey L. Cotter, Attorney-in-Fact</signatureName>
        <signatureDate>2022-01-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
