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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 P64WQUZBbZ5BImnm54LWR38BzocbRyqkp2sODRatFUmUcqd7p8v/0g3eiMycj/eQ
 xaeUU/39F5svwnl51j7JOg==

<SEC-DOCUMENT>0001199012-08-000033.txt : 20081117
<SEC-HEADER>0001199012-08-000033.hdr.sgml : 20081117
<ACCEPTANCE-DATETIME>20081117180139
ACCESSION NUMBER:		0001199012-08-000033
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20081114
FILED AS OF DATE:		20081117
DATE AS OF CHANGE:		20081117

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NATIONAL MUNICIPAL TRUST EIGHTY FIRST SERIES
		CENTRAL INDEX KEY:			0000761653
		IRS NUMBER:				000000000

	BUSINESS ADDRESS:	
		STREET 1:		ONE STATE STREET PLAZA 19TH FLOOR
		STREET 2:		C/O THOMSON MCKINNON SECURITIES INC
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10004

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HOOPINGARNER JOHN M
		CENTRAL INDEX KEY:			0001203247

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	002-95516
		FILM NUMBER:		081196614

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		3308326898

	MAIL ADDRESS:	
		STREET 1:		320 EAST 14TH STREET
		CITY:			DOVER
		STATE:			OH
		ZIP:			44622
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-11-14</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000761653</issuerCik>
        <issuerName>NATIONAL MUNICIPAL TRUST EIGHTY FIRST SERIES</issuerName>
        <issuerTradingSymbol>UBCP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001203247</rptOwnerCik>
            <rptOwnerName>HOOPINGARNER JOHN M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>320 EAST 14TH STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DOVER</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>44622</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-11-14</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2008-11-14</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>252</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>9.95</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6510</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>Randall M. Greenwood</signatureName>
        <signatureDate>2008-11-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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