<SEC-DOCUMENT>0001209191-13-017656.txt : 20130320
<SEC-HEADER>0001209191-13-017656.hdr.sgml : 20130320
<ACCEPTANCE-DATETIME>20130320123829
ACCESSION NUMBER:		0001209191-13-017656
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20130319
FILED AS OF DATE:		20130320
DATE AS OF CHANGE:		20130320

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BLACKROCK LTD DURATION INCOME TRUST
		CENTRAL INDEX KEY:			0001233681
		IRS NUMBER:				200096695
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1031

	BUSINESS ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		STREET 2:		MUTUAL FUND DEPARTMENT
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
		BUSINESS PHONE:		888-825-227

	MAIL ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		STREET 2:		MUTUAL FUND DEPARTMENT
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLACKROCK LIMITED DURATION INCOME TRUST
		DATE OF NAME CHANGE:	20030611

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLACKROCK MANAGED DURATION INCOME TRUST
		DATE OF NAME CHANGE:	20030529

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLACKROCK MANAGED DURATION TRUST
		DATE OF NAME CHANGE:	20030516

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BlackRock Holdco 2, Inc.
		CENTRAL INDEX KEY:			0001060021
		STANDARD INDUSTRIAL CLASSIFICATION:	INVESTMENT ADVICE [6282]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-21349
		FILM NUMBER:		13704111

	BUSINESS ADDRESS:	
		STREET 1:		40 EAST 52ND STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		2127545560

	MAIL ADDRESS:	
		STREET 1:		40 EAST 52ND STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

	FORMER NAME:	
		FORMER CONFORMED NAME:	BlackRock Merger Sub, Inc.
		DATE OF NAME CHANGE:	20060929

	FORMER NAME:	
		FORMER CONFORMED NAME:	BLACKROCK INC /NY
		DATE OF NAME CHANGE:	19990510
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2013-03-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001233681</issuerCik>
        <issuerName>BLACKROCK LTD DURATION INCOME TRUST</issuerName>
        <issuerTradingSymbol>BLW</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001060021</rptOwnerCik>
            <rptOwnerName>BlackRock Holdco 2, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>55 EAST 52ND STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10055</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Affl. of Investment Adviser</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2013-03-19</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>6021</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.848</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The shares were sold in two separate transactions. The range of prices for the transactions reported on this line was $18.84 to $18.87. The Reporting Person undertakes to provide upon request by the commission staff, the issuer, or the security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Benjamin Archibald as Attorney-in-Fact</signatureName>
        <signatureDate>2013-03-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
