-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 MuJzHIaaZbjniNen8VO8NYaXOWzDsCNcjBCStYEjXjVSd8kXgr2whAElibji7qmm
 1/SEvP1PpSooeK5SRUnmZQ==

<SEC-DOCUMENT>0000033185-03-000054.txt : 20030814
<SEC-HEADER>0000033185-03-000054.hdr.sgml : 20030814
<ACCEPTANCE-DATETIME>20030814120620
ACCESSION NUMBER:		0000033185-03-000054
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030813
FILED AS OF DATE:		20030814

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MAST KENT E
		CENTRAL INDEX KEY:			0001184089

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06605
		FILM NUMBER:		03844773

	MAIL ADDRESS:	
		STREET 1:		C/O EQUIFAX INC
		STREET 2:		1550 PEACHTREET STREET NW
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30309

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EQUIFAX INC
		CENTRAL INDEX KEY:			0000033185
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-CONSUMER CREDIT REPORTING, COLLECTION AGENCIES [7320]
		IRS NUMBER:				580401110
		STATE OF INCORPORATION:			GA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1600 PEACHTREE ST NW
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30302
		BUSINESS PHONE:		4048858000

	MAIL ADDRESS:	
		STREET 1:		1600 PEACHTREE ST NW
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30309

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	RETAIL CREDIT CO
		DATE OF NAME CHANGE:	19760222
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
    <periodOfReport>2003-08-13</periodOfReport>
    <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000033185</issuerCik>
        <issuerName>EQUIFAX INC</issuerName>
        <issuerTradingSymbol>EFX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001184089</rptOwnerCik>
            <rptOwnerName>MAST KENT E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O EQUIFAX INC</rptOwnerStreet1>
            <rptOwnerStreet2>1550 PEACHTREET STREET NW</rptOwnerStreet2>
            <rptOwnerCity>ATLANTA</rptOwnerCity>
            <rptOwnerState>GA</rptOwnerState>
            <rptOwnerZipCode>30309</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CVP, Gen Counsel and Sect</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>
  <nonDerivativeTable>
   <nonDerivativeTransaction>
      <securityTitle>
          <value>Common Stock</value>
      </securityTitle>
      <transactionDate>
          <value>2003-08-13</value>
      </transactionDate>
      <transactionCoding>
          <transactionFormType>4</transactionFormType>
          <transactionCode>M</transactionCode>
          <equitySwapInvolved>0</equitySwapInvolved>
      </transactionCoding>
      <transactionTimeliness>
      <value />
      </transactionTimeliness>
      <transactionAmounts>
          <transactionShares>
              <value>5000</value>
          </transactionShares>
          <transactionPricePerShare>
              <value>20.2377</value>
          </transactionPricePerShare>
          <transactionAcquiredDisposedCode>
              <value>A</value>
          </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <postTransactionAmounts>
          <sharesOwnedFollowingTransaction>
              <value>44450</value>
          </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
          <directOrIndirectOwnership>
              <value>D</value>
          </directOrIndirectOwnership>
      </ownershipNature>
   </nonDerivativeTransaction>
    <nonDerivativeHolding>
      <securityTitle>
          <value>Common Stock</value>
      </securityTitle>
      <postTransactionAmounts>
          <sharesOwnedFollowingTransaction>
              <value>227</value>
          </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
          <directOrIndirectOwnership>
              <value>I</value>
          </directOrIndirectOwnership>
          <natureOfOwnership>
              <value>401(k) Plan</value>
          </natureOfOwnership>
      </ownershipNature>
   </nonDerivativeHolding>
  </nonDerivativeTable>
  <derivativeTable>
   <derivativeTransaction>
      <securityTitle>
          <value>Stock Option/Right-to-Buy</value>
      </securityTitle>
      <conversionOrExercisePrice>
          <value>20</value>
      </conversionOrExercisePrice>
      <transactionDate>
          <value>2003-08-13</value>
      </transactionDate>
      <transactionCoding>
          <transactionFormType>4</transactionFormType>
          <transactionCode>M</transactionCode>
          <equitySwapInvolved>0</equitySwapInvolved>
      </transactionCoding>
      <transactionAmounts>
          <transactionShares>
              <value>5000</value>
          </transactionShares>
          <transactionPricePerShare>
              <value>20.2377</value>
          </transactionPricePerShare>
          <transactionAcquiredDisposedCode>
              <value>D</value>
          </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <exerciseDate>
          <value>1988-08-08</value>
              <footnoteId id="F1" />
      </exerciseDate>
      <expirationDate>
          <value>2010-11-07</value>
      </expirationDate>
      <underlyingSecurity>
          <underlyingSecurityTitle>
              <value>Common Stock</value>
          </underlyingSecurityTitle>
          <underlyingSecurityShares>
              <value>5000</value>
          </underlyingSecurityShares>
      </underlyingSecurity>
      <postTransactionAmounts>
          <sharesOwnedFollowingTransaction>
              <value>218944</value>
          </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
          <directOrIndirectOwnership>
              <value>D</value>
          </directOrIndirectOwnership>
      </ownershipNature>
   </derivativeTransaction>
  </derivativeTable>
<footnotes>
   <footnote id="F1">Partial exercise of a option grant representing 19,764 shares which vests in four equal annual increments beginning on 11/7/2000.
</footnote>
</footnotes>
    <ownerSignature>
       <signatureName>Kent E. Mast</signatureName>
       <signatureDate>2003-08-14</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
