<SEC-DOCUMENT>0001140361-16-046359.txt : 20160104
<SEC-HEADER>0001140361-16-046359.hdr.sgml : 20160104
<ACCEPTANCE-DATETIME>20160104203049
ACCESSION NUMBER:		0001140361-16-046359
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20151231
FILED AS OF DATE:		20160104
DATE AS OF CHANGE:		20160104

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MBIA INC
		CENTRAL INDEX KEY:			0000814585
		STANDARD INDUSTRIAL CLASSIFICATION:	SURETY INSURANCE [6351]
		IRS NUMBER:				061185706
		STATE OF INCORPORATION:			CT
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1 MANHATTANVILLE ROAD
		STREET 2:		SUITE 301
		CITY:			PURCHASE
		STATE:			NY
		ZIP:			10577
		BUSINESS PHONE:		914-273-4545

	MAIL ADDRESS:	
		STREET 1:		1 MANHATTANVILLE ROAD
		STREET 2:		SUITE 301
		CITY:			PURCHASE
		STATE:			NY
		ZIP:			10577

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CHAPLIN C EDWARD
		CENTRAL INDEX KEY:			0001237570

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09583
		FILM NUMBER:		161319953

	MAIL ADDRESS:	
		STREET 1:		C/O MBIA
		STREET 2:		113 KING STREET
		CITY:			ARMONK
		STATE:			NY
		ZIP:			10504
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2015-12-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000814585</issuerCik>
        <issuerName>MBIA INC</issuerName>
        <issuerTradingSymbol>MBI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001237570</rptOwnerCik>
            <rptOwnerName>CHAPLIN C EDWARD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MBIA INC</rptOwnerStreet1>
            <rptOwnerStreet2>1 MANHATTANVILLE ROAD, SUITE 301</rptOwnerStreet2>
            <rptOwnerCity>PURCHASE</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10577</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President, CFO &amp; CAO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2015-12-31</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>154710</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>6.48</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>802010</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares surrendered to Issuer for payment of tax liability upon vesting of restricted stock.</footnote>
        <footnote id="F2">Balance reflects adjustment for retirement plan shares.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Ram D. Wertheim, Attorney-in-Fact</signatureName>
        <signatureDate>2016-01-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
