<SEC-DOCUMENT>0001123292-16-002238.txt : 20160510
<SEC-HEADER>0001123292-16-002238.hdr.sgml : 20160510
<ACCEPTANCE-DATETIME>20160510131125
ACCESSION NUMBER:		0001123292-16-002238
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20160503
FILED AS OF DATE:		20160510
DATE AS OF CHANGE:		20160510

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NBT BANCORP INC
		CENTRAL INDEX KEY:			0000790359
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				161268674
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		52 S BROAD ST
		CITY:			NORWICH
		STATE:			NY
		ZIP:			13815
		BUSINESS PHONE:		6073372265

	MAIL ADDRESS:	
		STREET 1:		52 S. BROAD STREET
		CITY:			NORWICH
		STATE:			NY
		ZIP:			13815

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WATT JOHN H JR
		CENTRAL INDEX KEY:			0001265126

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-14703
		FILM NUMBER:		161634805

	MAIL ADDRESS:	
		STREET 1:		52 SOUTH BROAD STREET
		CITY:			NORWICH
		STATE:			NY
		ZIP:			13815
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    <periodOfReport>2016-05-03</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000790359</issuerCik>
        <issuerName>NBT BANCORP INC</issuerName>
        <issuerTradingSymbol>NBTB</issuerTradingSymbol>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001265126</rptOwnerCik>
            <rptOwnerName>WATT JOHN H JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>52 SOUTH BROAD STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NORWICH</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>13815</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP, Pres of NBT Bank, N.A.</officerTitle>
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    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>NBT Bancorp Inc. Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>40934</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
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                    <value>D</value>
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                <natureOfOwnership>
                    <value></value>
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    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ F. Sheldon Prentice, Power of Attorney</signatureName>
        <signatureDate>2016-05-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
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<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">POWER OF ATTORNEY</div>

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<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">Know all by these presents, that the undersigned hereby constitutes and appoints each of F. Sheldon Prentice and Michael J. Chewens signing singly, and with full power of substitution, the undersigned's true and lawful attorney-in-fact to:</div>

<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt"><font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; WIDTH: 9pt; DISPLAY: inline-block">&#160;</font>(1)<font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; WIDTH: 9pt; DISPLAY: inline-block">&#160;</font>execute for and on behalf of the undersigned, in the undersigned's capacity as an officer and/or director of NBT Bancorp Inc. (the "Company"), Forms 3, 4, and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder;<font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; WIDTH: 9pt; DISPLAY: inline-block">&#160;</font>

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<div><font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; WIDTH: 9pt; DISPLAY: inline-block">&#160;</font>(2)<font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; WIDTH: 9pt; DISPLAY: inline-block">&#160;</font>do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Form 3, 4, or 5 and timely file such form with the United States Securities and Exchange Commission and any stock exchange or similar authority; and</div>
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<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt"><font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; WIDTH: 9pt; DISPLAY: inline-block">&#160;</font>(3)<font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; WIDTH: 9pt; DISPLAY: inline-block">&#160;</font>take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit to, and in the best interest of, or legally required by, the undersigned.</div>

<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">&#160;</div>

<div><font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; WIDTH: 9pt; DISPLAY: inline-block">&#160;</font><font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; WIDTH: 9pt; DISPLAY: inline-block">&#160;</font><font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; WIDTH: 9pt; DISPLAY: inline-block">&#160;</font><font id="TRGRRTFtoHTMLTab" style="FONT-SIZE: 1px; WIDTH: 9pt; DISPLAY: inline-block">&#160;</font>The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be done by virtue of this power of attorney and the rights and powers herein granted.&#160; The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming, nor is the Company assuming, any of the undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934.</div>

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<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4, and 5 with respect to the undersigned's holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a sign writing delivered to the foregoing attorneys-in-fact.</div>

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<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 10th day of May, 2016.</div>

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