SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                _________________
                                    FORM 11-K
                                  ANNUAL REPORT
                        PURSUANT TO SECTION 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934
(Mark One):

ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934. X
                      -

For the fiscal year ended December 31, 2003

                                            OR

TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934. ____

For the transition period from _____________to _______________

                                Commission File No. 0-14703

A. Full title of the plan and the address of the plan, if different from that of
the issuer named below:
NBT Bancorp Inc. 401(k) and Employee Stock Ownership Plan

B. Name of issuer of the securities held pursuant to the plan and the address of
its principal executive
office:
NBT Bancorp Inc., 52 South Broad Street, Norwich, New York 13815.



                                NBT BANCORP INC.
                            401(K) AND EMPLOYEE STOCK
                                 OWNERSHIP PLAN

                       Financial Statements and Schedules

                           December 31, 2003 and 2002

         (With Report of Independent Registered Public Accounting Firm)



                                NBT BANCORP INC.
                            401(K) AND EMPLOYEE STOCK
                                 OWNERSHIP PLAN

                                      INDEX

                                                                            PAGE

Report of Independent Registered Public Accounting Firm                        1

Statements of Net Assets Available for Plan Benefits at
     December 31, 2003 and2002                                                 2

Statements of Changes in Net Assets Available for Plan Benefits
     for the years ended December 31, 2003 and 2002                            3

Notes to Financial Statements                                                  4

SCHEDULES

1     Schedule H, Line 4i - Schedule of Assets Held at End of Year             9

2     Schedule H, Line 4j - Schedule of Reportable Transactions               10



             REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Plan Administrator
NBT Bancorp Inc. 401(k) and Employee
     Stock Ownership Plan:

We have audited the accompanying statements of net assets available for plan
benefits of NBT Bancorp Inc. 401(k) and Employee Stock Ownership Plan as of
December 31, 2003 and 2002 and the related statements of changes in net assets
available for plan benefits for the years then ended. These financial statements
are the responsibility of the Plan's management. Our responsibility is to
express an opinion on these financial statements based on our audits.
We conducted our audits in accordance with the standards of the Public Company
Accounting Oversight Board (United States). Those standards require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe that our audits provide a
reasonable basis for our opinion.
In our opinion, the financial statements referred to above present fairly, in
all material respects, the net assets available for plan benefits of the Plan as
of December 31, 2003 and 2002 and the changes in net assets available for plan
benefits for the years then ended in conformity with U.S. generally accepted
accounting principles.
Our  audits  were  performed  for the purpose of forming an opinion on the basic
financial statements taken as a whole. The supplemental schedules of assets held
at  end  of  year  and  reportable transactions are presented for the purpose of
additional  analysis  and  are  not  a  required  part  of  the  basic financial
statements,  but  are  supplementary  information  required by the Department of
Labor's  Rules  and  Regulations for Reporting and Disclosure under the Employee
Retirement  Income  Security  Act  of 1974. These supplemental schedules are the
responsibility  of  the  Plan's management. The supplemental schedules have been
subjected  to  the  auditing  procedures  applied  in  the  audits  of the basic
financial  statements  and,  in  our  opinion, are fairly stated in all material
respects  in  relation  to  the  basic  financial  statements  taken as a whole.


                                       /S/ KPMG LLP


June 10, 2004





                                NBT BANCORP INC.
                            401(K) AND EMPLOYEE STOCK
                                 OWNERSHIP PLAN
              Statements of Net Assets Available for Plan Benefits
                           December 31, 2003 and 2002


ASSETS                                                    2003         2002
                                                       -----------  ----------
                                                              
Investments, at fair value:

   Money market funds                                  $ 3,303,719   3,184,961
   Bond mutual funds                                     1,256,397   1,108,318
   Common stock of NBT Bancorp Inc.                     28,893,427  22,405,048
   Equity mutual funds                                  12,130,459   9,254,168
   Foreign equity mutual funds                           1,611,041   1,379,875
   Participant loans receivable                            625,413     646,333
                                                       -----------  ----------
               Total investments                        47,820,456  37,978,703
                                                       -----------  ----------
   Employer contribution receivable                        597,260     573,708

   Participant contribution receivable                           -      61,918
                                                       -----------  ----------
               Net assets available for plan benefits  $48,417,716  38,614,329
                                                       ===========  ==========
See accompanying notes to financial statements.



                                        2



                                   NBT BANCORP INC.
                               401(K) AND EMPLOYEE STOCK
                                    OWNERSHIP PLAN
            Statements of Changes in Net Assets Available for Plan Benefits
                        Years ended December 31, 2003 and 2002


                                                                 2003         2002
                                                             ------------  -----------
                                                                     
Additions to net assets attributed to:

   Contributions:
      Participants                                           $ 2,394,526    2,399,111
Employer                                                       1,440,513    1,340,724
                                                             ------------  -----------
               Total contributions                             3,835,039    3,739,835
                                                             ------------  -----------
Transfer from merged FNB Plans (note 1b)                               -    1,752,242
Investment income:
   Net realized and unrealized gain on investments (note 3)    8,646,765      181,634
   Interest                                                       43,036      225,829
   Dividends                                                   1,086,198    1,035,694
                                                             ------------  -----------
               Net investment income                           9,775,999    1,443,157
                                                             ------------  -----------
               Total increase                                 13,611,038    6,935,234
                                                             ------------  -----------
Deductions from net assets attributed to:
   Distributions                                              (3,807,651)  (4,048,690)
                                                             ------------  -----------
               Net increase                                    9,803,387    2,886,544
Net assets available for plan benefits:
   Beginning of year                                          38,614,329   35,727,785
                                                             ------------  -----------
   End of year                                               $48,417,716   38,614,329
                                                             ============  ===========
See accompanying notes to financial statements.



                                        3

                                NBT BANCORP INC.
                            401(K) AND EMPLOYEE STOCK
                                 OWNERSHIP PLAN

                          Notes to Financial Statements

                           December 31, 2003 and 2002


(1)  DESCRIPTION OF PLAN

     The following description of the NBT Bancorp Inc. 401(k) and Employee Stock
     Ownership  Plan  (the  Plan)  is  provided for general information purposes
     only.  Participants  should  refer  to  the  Plan agreement or summary plan
     document  for  more  complete  information.

     (a)  GENERAL

          The  Plan  is a defined contribution plan as defined under Section 401
          of the Internal Revenue Code (IRC), sponsored by NBT Bancorp Inc. (the
          Sponsor).  The  Sponsor is responsible for administration of the Plan.
          NBT Bank, N.A. (the Trustee), a wholly owned subsidiary of NBT Bancorp
          Inc.,  is  the  trustee  of the Plan. The assets of the Plan are held,
          administered,  and managed in accordance with the terms and conditions
          of  the Trust Agreement, which is considered to be an integral part of
          the  Plan.  The  Plan  is  subject  to  the provisions of the Employee
          Retirement  Income  Security  Act  of  1974  (ERISA).

     (b)  MERGER

          On  June  1,  2001,  the  Sponsor  completed  the acquisition of First
          National  Bancorp,  Inc.  (FNB).  Effective January 1, 2002, FNB's two
          defined  contribution  plans, First National Bank of Northern New York
          Employee  Profit  Sharing Plan and First National Bank of Northern New
          York  ESOP  (collectively referred to herein as the "FNB Plans"), were
          merged  with  and  into  the  Plan.  All participants in the FNB Plans
          became  participants  in  the  Plan.  The  net  assets  of  FNB Plans,
          consisting  primarily  of cash and NBT Bancorp Inc. common stock, were
          transferred  to  the  Plan's  trust  on January 2, 2002 and January 3,
          2002.  Net  assets  merged  into  the  Plan from the FNB Plans totaled
          $1,752,242.

     (c)  ELIGIBILITY

          All  employees  over  age 21 with at least one year of service and who
          worked  at  least 1,000 hours in the first 12 months of employment are
          eligible  to  participate  in  the  Plan.

     (d)  CONTRIBUTIONS

          Participants make pre-tax contributions in whole percentages up to IRS
          limitations  for  any  Plan  year.

          The  Sponsor  provides  a  matching  contribution  of  100%  of  each
          participant's  contribution  up  to  3%  of  their  compensation.  In
          addition, a discretionary amount, determined by the Sponsor's board of
          directors, may be contributed to the Plan each year. Participants must
          be  actively  employed  on  the  last day of the year to share in this
          contribution,  which  is  allocated  to  participants  based  on
          compensation.  During  2003  and  2002, discretionary contributions of
          $597,260  and  $545,213,  respectively, were approved by the Sponsor's
          board  of  directors.  These  amounts  were paid during 2004 and 2003,
          respectively.


                                        4                            (Continued)

                                NBT BANCORP INC.
                            401(K) AND EMPLOYEE STOCK
                                 OWNERSHIP PLAN

                          Notes to Financial Statements

                           December 31, 2003 and 2002


     (e)  PARTICIPANTS' ACCOUNTS

          Participants  may elect to have their contributions invested among the
          various  funds available to the Plan. All Sponsor contributions to the
          Plan  are  invested  in  the  NBT  Bancorp  Inc.  common  stock.  Each
          participant's account is credited with the Sponsor's and participant's
          contributions,  plan earnings, and income, expenses, gains, and losses
          attributable  thereto.

     (f)  VESTING

          Participants'  contributions  and  any  investment  income thereon are
          always 100% vested. Participants vest in the employer contributions on
          a  straight  line  basis of 20% for each full year of service (minimum
          1,000  hours)  up  to  100%  vesting. Participants are considered 100%
          vested  upon  termination  due  to  death,  retirement,  or  permanent
          disability.

     (g)  PARTICIPANT'S CLAIMS UPON PLAN TERMINATION

          Although  it has not expressed any intention to do so, the Sponsor has
          the  right  to  discontinue contributions or terminate the Plan at any
          time  subject  to  Plan provisions. In the event of termination of the
          Plan,  each  participant's  account  would  become  fully  vested.

     (h)  FORFEITURES

          Forfeitures  are  applied  to reduce the amount of subsequent employer
          contributions  otherwise  required  to  be  paid.  In  2003  and 2002,
          forfeitures  from  nonvested  accounts  totaled  $31,627  and $45,431,
          respectively.  Forfeiture account balances totaled $64,203 and $32,576
          at  December  31,  2003  and  2002,  respectively.

     (i)  PAYMENT OF BENEFITS

          Upon  normal or early retirement, disability, death, or termination of
          employment,  the  value of a participant's account is paid in a single
          lump  sum,  as specified by the Plan. Early retirement is allowed upon
          reaching  age  55  and  completing  5  years  of  service.

     (j)  PARTICIPANT LOANS

          Participants  may  borrow  from  their account in amounts ranging from
          $1,000  to  the  lesser of $50,000 or 50% of the vested 401(k) account
          balance  (excludes  Company contributions invested in NBT Bancorp Inc.
          common stock). Beginning January 1, 1997, participants are not allowed
          to  borrow  from  employer contributions made subsequent to that date.
          Loans,  other than loans for the purchase of a primary residence, must
          be  repaid  over  a  period  no  longer than five years. Loans for the
          purchase of a primary residence must be repaid over a period no longer
          than 15 years. Interest is charged at the prime rate plus 1% as of the
          loan  origination  date.  Participant  loans are treated as a transfer
          from  the  participant directed accounts into the loan fund. Principal
          and  interest payments on the loans are allocated to the loan fund and
          transferred  into  the  participant  directed  accounts  based  on the
          participants'  current  investment  allocation  elections.


                                        5                            (Continued)

                                NBT BANCORP INC.
                            401(K) AND EMPLOYEE STOCK
                                 OWNERSHIP PLAN

                          Notes to Financial Statements

                           December 31, 2003 and 2002


     (k) ADMINISTRATIVE EXPENSES

          Expenses  of  operating and administering the Plan are generally borne
          by  the  Sponsor. The payment of these expenses is not mandated by the
          Plan  and  is  done  so  at  the  discretion  of  the  Sponsor.

     (l) VOTING RIGHTS

          With  respect  to  participant  account  balances that are invested in
          shares  of  the  Sponsor's  stock,  each  participant  is  entitled to
          exercise  voting rights attributable to the shares allocated to his or
          her account and is notified by the Trustee prior to the time that such
          rights  are  to  be  exercised.

     (m)     RISKS AND UNCERTAINTIES

          The Plan invests in various types of investment securities. Investment
          securities  are  exposed  to  various  risks,  such  as interest rate,
          market,  and  credit  risks.  Due to the level of risk associated with
          certain investment securities, it is at least reasonably possible that
          changes  in the values of investment securities will occur in the near
          term  and  that  such  changes  could  materially  affect  the amounts
          reported  in  the  statement  of  net  assets  available for benefits.

(2)  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     (a)  BASIS OF PRESENTATION

          The accompanying financial statements have been prepared in accordance
          with  accounting principles generally accepted in the United States of
          America  on  the  accrual  basis  of  accounting. Amounts in the prior
          year's financial statements are reclassified when necessary to conform
          with  the  current  year's  presentation.

     (b)  INVESTMENTS HELD IN TRUST

          Mutual  funds  and  the common stock of the Sponsor are stated at fair
          value,  based  on  published market quotations. Money market funds are
          short-term investments carried at cost, which approximates fair value.
          Loans  to  participants  are  carried at the unpaid principal balance,
          which  approximates  fair  value.

          Purchases  and sales of securities are recorded on a trade-date basis.
          Interest  income  is recorded on the accrual basis. Dividend income is
          recorded  on  the  ex-dividend  date.

     (c)  USE OF ESTIMATES

          The  preparation of financial statements in conformity with accounting
          principles generally accepted in the United States of America requires
          the  use of estimates and assumptions that affect the reported amounts
          of  net  assets  and changes therein. Actual results could differ from
          those  estimates.


                                        6                            (Continued)

                                NBT BANCORP INC.
                            401(K) AND EMPLOYEE STOCK
                                 OWNERSHIP PLAN

                          Notes to Financial Statements

                           December 31, 2003 and 2002


(3)  INVESTMENTS

     Investments  that represent 5% or more of the net assets available for plan
     benefits  at  December  31,  2003  or  2002  are  as  follows:



                                             2003         2002
                                          -----------  ----------
                                                 
Money market funds:
   Federated Capital Preservation Fund    $ 3,303,719           -
   Strong Money Market Fund                         -   3,184,973

Mutual funds:
   American Funds Growth Fund of America    3,063,266           -
   Strong Growth and Income Fund                    -   2,697,056
   Federated Capital Appreciation Fund      2,849,034           -
   Strong Large Cap Growth fund                     -   2,540,705

Common stock:
   NBT Bancorp Inc.                        28,893,427  22,405,306


During  2003 and 2002, the Plan's investments appreciated (depreciated) in value
(including  realized  gains  and  losses  on  investments bought, sold, and held
during  the  year)  as  follows:



                                      YEAR ENDED DECEMBER 31
                                     ------------------------
                                        2003         2002
                                     -----------  -----------
                                            

   Bond mutual funds                 $  (10,229)      25,149
   Common stock of NBT Bancorp Inc.   5,939,764     3,318,952
   Equity mutual funds                2,409,421   (2,673,226)
   Foreign equity mutual funds          307,809     (489,241)
                                     -----------  -----------
                                     $8,646,765      181,634
                                     ===========  ===========



                                        7                            (Continued)

(4)  NONPARTICIPANT DIRECTED INVESTMENTS

     Information  about  the  investments relating to accumulated nonparticipant
     directed  contributions, including the significant components of changes in
     investments related to nonparticipant directed contributions, is as follows
     for  the  years  ended  December  31:



                                                         2003         2002
                                                     ------------  -----------
                                                             

     Fair value of NBT Bancorp Inc. common stock at
        beginning of year                            $22,405,048   17,380,335
     Transfers from other plans                                -    1,390,463
     Contributions and loan repayments                 1,632,544    1,289,274
     Dividends                                           923,985      883,996
     Net realized and unrealized appreciation          5,939,764    3,318,952
     Distributions and new loans issued               (2,007,914)  (1,857,972)
                                                     ------------  -----------
     Fair value of NBT Bancorp Inc. common stock at
        end of year                                  $28,893,427   22,405,048
                                                     ============  ===========


(5)  INCOME TAX STATUS

     The  Internal  Revenue Service has determined and informed the Sponsor by a
     letter  dated October 30, 2001, that the Plan and underlying trust, as then
     designed,  were  in  compliance  with  the  applicable  requirements of the
     Internal  Revenue  Code and therefore the Plan is exempt from income taxes.
     Management believes that the Plan is currently being operated in compliance
     with  the  applicable  requirements  of  the  Internal  Revenue  Code.

(6)  PARTY-IN-INTEREST TRANSACTIONS

     Certain  Plan  investments  are  shares  of  NBT  Bancorp  Inc., the Plan's
     Sponsor.  Therefore,  transactions  involving  those  shares  are
     party-in-interest  transactions.  Additionally,  the trustee of the Plan is
     NBT  Bank,  N.A.  which  is  a  subsidiary  of  the  Sponsor.


                                        8



----------------------------------------------------------------------------------------------------------
                                                                                                SCHEDULE 1
                                             NBT BANCORP INC.
----------------------------------------------------------------------------------------------------------
                                         401(K) AND EMPLOYEE STOCK
----------------------------------------------------------------------------------------------------------
                                              OWNERSHIP PLAN
----------------------------------------------------------------------------------------------------------
                       Schedule H, Line 4i - Schedule of Assets Held at End of Year
----------------------------------------------------------------------------------------------------------
                                             December 31, 2003
----------------------------------------------------------------------------------------------------------
                                               (c) DESCRIPTION OF INVESTMENT
     (b) IDENTITY OF ISSUER                      INCLUDING MATURITY DATE,
        BORROWER, LESSOR,                      RATE OF INTEREST, COLLATERAL,                  (e) CURRENT
(a)     OR SIMILAR PARTY                          PAR, OR MATURITY VALUE           (d) COST      VALUE
---  -----------------------------------  ---------------------------------------  ---------  ------------
                                                                                  
     Federated Capital Preservation Fund  Money market fund                        $      **  $  3,303,719
     Dodge & Cox Income                   Bond mutual fund, 16,928.137 shares             **       218,711
     Vanguard Intermediate US Treasury    Bond mutual fund, 91,025.058 shares             **     1,037,686
     American Funds Growth Fund of
       America                            Equity mutual fund, 125,853.14 shares           **     3,063,266
     Vanguard Capital Opportunity         Equity mutual fund, 5,184.320 shares            **       131,734
     Federated Capital Appreciation Fund  Equity mutual fund, 119,356.252 shares          **     2,849,034
     FPA Capital                          Equity mutual fund, 10,450.984 shares           **       385,120
     T-Rowe Price Mid Cap Growth          Equity mutual fund, 12,977.462 shares           **       556,733
     Dodge & Cox Stock Fund               Equity mutual fund, 7,567.282 shares            **       861,005
     Dodge & Cox Balance Fund             Equity mutual fund, 29,652.719 shares           **     2,165,836
     Vanguard 500 Index Fund              Equity mutual fund, 16,001.249 shares           **     1,642,845
     Liberty Acorn                        Equity mutual fund, 22,410.856 shares           **       474,886
     American Funds New Perspective       Foreign equity mutual fund, 66,216.201
     Fund                                 shares                                          **     1,611,041
     NBT Bancorp Inc.                     Common stock, 1,347,641.198 shares             ***    28,893,427
     Participant loans receivable         Interest rates - 5.25% - 12.14%                 **       625,413
                                                                                              ------------
                                                                                              $ 47,820,456
                                                                                              ============


*  Party-in-interest.
** Cost omitted for these participant directed investments.
***Represents cost of NBT Bancorp Inc. common stock for which there is no participant direction as well as
   NBT Bancorp Inc. common stock for which participants have direction.


See accompanying report of independent registered public accounting firm.


                                        9



                                                                                                                        SCHEDULE 2

                                                         NBT BANCORP INC.
                                                     401(K) AND EMPLOYEE STOCK
                                                          OWNERSHIP PLAN
                                     Schedule H, Line 4j - Schedule of Reportable Transactions
                                                   Year ended December 31, 2003

                          (b) DESCRIPTION OF                                                               (h) CURRENT
                           ASSET (INCLUDING                                      (f) EXPENSE                VALUE OF
                             INTEREST RATE         (c)         (d)        (e)     INCURRED                  ASSET ON     (i) NET
(a) IDENTITY OF PARTY        AND MATURITY       PURCHASE     SELLING     LEASE      WITH      (g) COST OF  TRANSACTION     GAIN
INVOLVED                  IN CASE OF A LOAN)      PRICE       PRICE     RENTAL   TRANSACTION     ASSET        DATE        (LOSS)
------------------------  -------------------  -----------  ----------  -------  -----------  -----------  -----------  ----------
                                                                                                
Series of transactions:
-----------------------
NBT Bancorp Inc.
   (series of 105
   transactions)          Common stock         $ 4,785,584           -        -            -    4,785,584    4,785,584           -

NBT Bancorp Inc.
   (series of 281
   transactions)          Common stock                   -   4,236,969        -            -    3,135,519    4,236,969   1,101,450

Reportable transactions, for purposes of this schedule are:

(1)  A single transaction within the plan year in excess of 5% of the current
     value of the plan assets at the beginning of the plan year;
(2)  Any series of transactions with, or in conjunction with, the same person,
     involving property other than securities, which amount in the aggregate
     within the plan year (regardless of the category of asset and the gain or
     loss on any transaction) to more than 5% of the current value of plan
     assets at the beginning of the Plan year;
(3)  Any transaction within the plan year involving securities of the same issue
     if within the plan year any series of transactions with respect to such
     securities amount in the aggregate to more than 5% of the current value of
     the plan assets at the beginning of the Plan year; and
(4)  Any transaction within the plan year with respect to securities with, or in
     conjunction with, a person if any prior or subsequent single transaction
     within the plan year with such person, with respect to securities, exceeds
     5% of the current value of plan assets at the beginning of the Plan year.

See accompanying report of independent registered public accounting firm.



                                       10

Exhibits:

23     Consent of Independent Registered Public Accounting Firm  dated June 25,
       2004.


                                   SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the
trustees (or other persons who administer the employee benefit plan) have duly
caused this annual report to be signed on its behalf by the undersigned hereunto
duly authorized.

Dated: June 25, 2004       NBT BANCORP INC. 401 (k) AND EMPLOYEE STOCK
                           OWNERSHIP PLAN


                           By: /s/ Thomas R. Delduchetto


                               Thomas R. Delduchetto
                               Executive Vice President and Director of
                               Human Resources and Member of the 401 (k) Plan
                               Administrative Committee of the NBT Bancorp Inc.
                               401 (k) and Employee Stock Ownership Plan


                                       11



                                     EXHIBIT INDEX
Exhibit  Document
-------  -----------------------------------------------------------------------------
      

23       Consent of Independent Registered Public Accounting Firm dated June 25, 2004.



                                       12