-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 OD85pqYJNLVUwGzn3P1g4C+D0extMBRw+kGQxGOj1Hr4slqm/7a08qFeVsujyQ5y
 N0gONgsdYMUa6YsGzdjERg==

<SEC-DOCUMENT>0001104659-08-044400.txt : 20080708
<SEC-HEADER>0001104659-08-044400.hdr.sgml : 20080708
<ACCEPTANCE-DATETIME>20080708105256
ACCESSION NUMBER:		0001104659-08-044400
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080703
FILED AS OF DATE:		20080708
DATE AS OF CHANGE:		20080708

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SOURCE CAPITAL INC /DE/
		CENTRAL INDEX KEY:			0000091847
		IRS NUMBER:				941679410
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		11400 WEST OLYMPIC BLVD
		STREET 2:		SUITE 1200
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90064
		BUSINESS PHONE:		3102774900

	MAIL ADDRESS:	
		STREET 1:		11400 WEST OLYMPIC BLVD
		STREET 2:		SUITE 1200
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90064

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SMC INVESTMENT CORP
		DATE OF NAME CHANGE:	19721123

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ONEIL STEPHEN W
		CENTRAL INDEX KEY:			0001186265

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-01731
		FILM NUMBER:		08942257

	MAIL ADDRESS:	
		STREET 1:		11400 W OLYMPIC BLVD
		STREET 2:		STE 1200
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90064
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-07-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000091847</issuerCik>
        <issuerName>SOURCE CAPITAL INC /DE/</issuerName>
        <issuerTradingSymbol>SOR+</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001186265</rptOwnerCik>
            <rptOwnerName>ONEIL STEPHEN W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11400 W. OLYMPIC BL., STE. 1200</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90064</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Officer of Inv co's inv adv</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Preferred Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-07-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>425</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>32.10</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <remarks>This form is signed by the reporting person's attorney-in-fact pursuant to the confirming statement previously filed.</remarks>

    <ownerSignature>
        <signatureName>/s/ Sherry Sasaki, Attorney-in-Fact</signatureName>
        <signatureDate>2008-07-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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