Exhibit 4.1



                         FIRST EMPIRE STATE CORPORATION
                               DEFERRED BONUS PLAN
                (Amended and Restated effective January 1, 1998)

                                    ARTICLE I

                                     INTENT

                  This First Empire State Corporation Deferred Bonus Plan was
           established, effective January 1, 1984, for the benefit of certain
           employees of certain affiliates of First Empire State Corporation.
           The Plan is intended to qualify as a plan described in Section 201(2)
           of the Employee Retirement Income Security Act of 1974, as amended
           ("ERISA"), and is maintained primarily for the purpose of providing
           deferred compensation for a select group of management or highly
           compensated employees.


                                   ARTICLE II

                                   DEFINITIONS

                  When used in this Plan, the following terms shall have the
           following meanings:

                  2.1 "Account" means the account maintained for a Participant
           pursuant to Article IV hereof.

                  2.2 "Beneficiary" means the person or persons designated by a
           Participant pursuant to Article VI hereof to receive any benefit
           payable pursuant to Section 5.1 hereof upon the Participant's death.

                  2.3 "Bank" means Manufacturers and Traders Trust Company and
           its successors by merger, sale of assets or otherwise.

                  2.4  "Board" means the board of directors of First
           Empire State Corporation.

                  2.5  "Bonus" means an Eligible Employee's award under
           an Incentive Plan.

                  2.6 "Deemed Earnings" means the income earned or loss incurred
           with respect to a Participant's Deemed Investment Portfolio. The
           Deemed Earnings with respect to each investment option in a Deemed
           Investment Portfolio shall be determined on the basis of the total
           actual return on such investment option in the First Empire State
           Corporation Retirement Savings Plan for the period in question or, in
           the





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           case of a First Empire Stock Deemed Investment Account, on the basis
           of the number of shares of First Empire Common Stock that would
           represent reinvested dividends on the shares credited to such First
           Empire Stock Deemed Investment Account
           for the period in question.

                  2.7 "Deemed Investment Portfolio" means the hypothetical
           portfolio designated by a Participant from among (a) the investment
           options offered under the First Empire State Corporation Retirement
           Savings Plan, excluding the First Empire State Corporation Stock Fund
           offered thereunder, and (b) shares of First Empire Common Stock.

                  2.8 "Deferred Bonus Election" means an election made pursuant
           to Section 3.1(a) hereof.

                  2.9 "Deferred Bonus" means that portion of a Bonus the payment
           of which is deferred by a Participant under this Plan.

                  2.10 "Deferred Bonus Agreement" means the written agreement
           entered into between a Participant and his Employer pursuant to which
           the Participant elects to defer payment of a specified portion of his
           Bonus in accordance with the terms of this Plan and such agreement.

                  2.11 "Eligible Employee" means an individual who is an
           employee of an Employer, who is eligible to participate in an
           Incentive Plan and who is designated by the Plan Administrator as
           eligible to participate in this Plan.

                  2.12 "Employer" means First Empire State Corporation and each
           of its affiliates, any of whose employees are eligible to participate
           in an Incentive Plan.

                  2.13  "Financial Hardship" means a financial hardship
           of a Participant.

                  2.14  "First Empire Common Stock" means the Common
           Stock, par value $5.00 per share, of First Empire State
           Corporation.

                  2.15 "First Empire Stock Deemed Investment Account" means that
           portion of an Account consisting of hypothetical shares of First
           Empire Common Stock.

                  2.16 "Incentive Plan" means the First Empire State Corporation
           Incentive Plan and such other incentive plans of First Empire State
           Corporation or its subsidiaries as the Plan Administrator may
           designate.





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                  2.17 "Participant" means an Eligible Employee who has deferred
           a portion of his Bonus pursuant to a Deferred Compensation Agreement
           and the terms of this Plan.

                  2.18 "Plan" means this First Empire State Corporation Deferred
           Bonus Plan, as set forth herein and amended from time to time.

                  2.19 "Plan Administrator" means such person or committee as
           may be designated by the Board to serve as such under this Plan.

                  2.20 "Retirement" means the earliest of a Participant's (a)
           normal retirement, early retirement or disability retirement under
           the First Empire State Corporation Retirement Plan, (b) death or (c)
           65th birthday.

                  2.21 "Revaluation Date" means the last day of each calendar
           quarter and such other dates as may be designated by the Plan
           Administrator.


                                   ARTICLE III

                                DEFERRAL OF BONUS

                  3.1  Deferred Bonus Elections.

                       (a) An Eligible Employee, by executing a Deferred Bonus
           Agreement, may elect to defer all or any portion of his Bonus.

                       (b) An Eligible Employee must make his Deferral Election
           for a Bonus payable with respect to a calendar year on or before
           October 31 of that calendar year.

                  3.2  Deferred Bonus Agreements.

                       (a) A Deferred Bonus Election pursuant to this Plan shall
           be made pursuant to a written Deferred Bonus Agreement between the
           Eligible Employee and his Employer.

                       (b) A Participant's Deferred Bonus Agreement shall
           specify whether the Deferred Bonus thereunder (and Deemed Earnings
           thereon) shall be paid in a single lump-sum payment or in annual
           installments payable over five, ten or 20 years.

                       (c) A Participant's Deferred Bonus Agreement shall
           specify whether the Deferred Bonus thereunder (and Deemed Earnings
           thereon) shall be paid (or shall commence to





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           be paid) at (i) Retirement or (ii) on a date selected by the
           Participant from among any one of the first 20 anniversaries of the
           date on which the Deferred Bonus would have been paid absent the
           Deferred Bonus Election.


                                   ARTICLE IV

                                    ACCOUNTS

                  4.1 Maintenance of Accounts. The Plan Administrator shall
           establish a bookkeeping account (an "Account") for each Participant.
           As of the first day of the month in which a Deferred Bonus would have
           been paid to the Participant absent a Deferred Bonus Election, the
           amount of such Deferred Bonus shall be credited to such Participant's
           Account.

                  4.2 Deemed Earnings. As of each Revaluation Date, a
           Participant's Account shall be adjusted for Deemed Earnings since the
           preceding Revaluation Date. Where a Deferred Bonus is credited to an
           Account other than on a Revaluation Date, Deemed Earnings on the
           amount of such Deferred Bonus for the period from the date of such
           credit until the next succeeding Revaluation Date shall be a pro rata
           portion of Deemed Earnings on an equivalent amount for the period
           between the Revaluation Dates immediately preceding and succeeding
           the date of such credit, calculated by reference to the number of
           days in each period, except that Deemed Earnings on a First Empire
           Stock Deemed Investment Account shall be based on the actual dates of
           dividend payments on First Empire Common Stock.

                  4.3 Deemed Investment Portfolio. In his Deferred Bonus
           Agreement, a Participant shall designate a Deemed Investment
           Portfolio, and shall allocate his Deferred Bonus among the investment
           options offered for inclusion in the Deemed Investment Portfolio in
           integral multiples of 5 percent. A Participant may change such
           allocation on a calendar quarterly basis by submitting a written form
           to the Plan Administrator prior to the first day of such calendar
           quarter; provided, however, that a Participant may not change a prior
           allocation to his First Empire Stock Deemed Investment Account other
           than to add to such Account.

                  4.4  Separate Accounting.  Within a Participant's
           Account, the Plan Administrator shall account separately for
           each of the Participant's Deferred Bonuses.

                  4.5  First Empire Stock Deemed Investment Account.  A
           Participant's First Empire Stock Deemed Investment Account
           shall be credited with the number of hypothetical shares of





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           First Empire Common Stock that equals the portion of the Deferred
           Bonus as to which the Participant elected a hypothetical investment
           in such shares, divided by the closing price of a share of First
           Empire Common Stock on the American Stock Exchange (or such other
           principal securities exchange on which the shares of Common Stock are
           traded if such shares are no longer traded on the American Stock
           Exchange) on the effective date of the deferral, which shall be the
           date on which the Deferred Bonus would have been paid had it not been
           deferred, plus Deemed Earnings thereon. In the event of any change in
           corporate capital capitalization, such as a stock split, or a
           corporate transaction, such as any merger, consolidation, separation,
           including a spin-off, or other distribution of stock or property of
           the Employer, any reorganization (whether or not such reorganization
           comes within the definition of such term in Internal Revenue Code
           Section 368) or any partial or complete liquidation of the Employer,
           such adjustment shall be made in the number and class of hypothetical
           shares of First Empire Common Stock held in a Participant's First
           Empire Stock Deemed Investment Account as may be determined to be
           appropriate and equitable by the Plan Administrator in its sole
           discretion.


                                    ARTICLE V

                               PAYMENT OF BENEFITS

                  5.1 General Rule. Except as provided in the following sentence
           or in Section 5.2 hereof, a Participant (or, in the event of the
           Participant's death, his Beneficiary) shall receive (or begin to
           receive) payment of the amount standing to the Participant's Account
           as of the Revaluation Date or Dates next following the time or times
           elected in the Participant's Deferred Bonus Agreement or Agreements
           and shall receive such payment or payments in the form or forms
           elected in such Agreement or Agreements. If, however, a Participant
           terminates his employment with the Employer for any reason other than
           Retirement, the Plan Administrator, in its discretion, may direct
           that, rather than payment pursuant to the preceding sentence, a
           single payment shall be made of the amount standing to the
           Participant's Account as of any earlier Revaluation Date.

                  5.2  Hardship Withdrawals.  In the event of Financial
           Hardship, a Participant may request a distribution of all or a
           portion of the amount standing to his Account.  The
           determination of whether a Participant has incurred a
           Financial Hardship shall be made by the Plan Administrator.
           The Participant shall determine against which Deferred Bonus





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           or Bonuses (and Deemed Earnings thereon) a withdrawal pursuant to
           this Section 5.2 shall be charged.

                  5.3 Payment. The payment to a Participant with respect to a
           Deferred Bonus (and Deemed Earnings thereon) shall be made in cash by
           the Participant's last Employer in the year with respect to which the
           Bonus deferred was payable; provided, however, that (a) if such
           Employer is owned directly or indirectly by a bank, the payment shall
           be made by such bank and (b) payment from a Participant's First
           Empire Stock Deemed Investment Account shall be made in First Empire
           Common Stock (except to the extent that payment in First Empire
           Common Stock would result in a fractional share, in which case the
           amount that would constitute a fractional share shall be paid in
           cash, based on the closing price of a share of First Empire Common
           Stock on the American Stock Exchange, or such other principal
           securities exchange on which the shares of Common Stock are traded if
           such shares are no longer traded on the American Stock Exchange, on
           the Revaluation Date immediately preceding the date of payment).
           Payments of a Participant Account which (x) is not being paid in a
           single payment and (y) contains a First Empire Stock Deemed
           Investment Account as well as other amounts in the Account, shall be
           made in both cash and First Empire Common Stock pro rata in
           accordance with the values of the Participant's First Empire Stock
           Deemed Investment Account and the balance of the Participant's
           Account.

                  5.4 Tax Withholding. The Plan Administrator may make such
           provisions and take such steps as it may deem necessary or
           appropriate for the withholding by the Employers of all Federal,
           state, local or other taxes required by law to be withheld with
           respect to deferrals and payments under this Plan, including, without
           limitation, in the discretion of the Plan Administrator, (a)
           requiring the Participant (or Beneficiary, as the case may be) to
           pay, or provide for payment of, the amount of any such taxes, (b)
           deducting any such taxes from any amount otherwise payable to the
           Participant or Beneficiary in cash, including amounts payable under
           this Plan, or (c) reducing the number of shares of First Empire
           Common Stock otherwise payable under this Plan by an amount (based on
           the closing price of such shares on the Revaluation Date immediately
           preceding the date the shares would otherwise have been paid) equal
           to the amount of any such taxes.





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                                   ARTICLE VI

                                  BENEFICIARIES

                  Each Participant may designate from time to time any person or
           persons, natural or otherwise, as his Beneficiary or Beneficiaries to
           whom benefits under Section 5.1 are to be paid in the event of his
           death. Each Beneficiary designation shall be made either in the
           Deferred Bonus Agreement or on a form provided by the Plan
           Administrator and shall be effective only when filed with the Plan
           Administrator during the Participant's lifetime. Each Beneficiary
           designation filed with the Plan Administrator shall revoke all
           Beneficiary designations previously made by the Participant. The
           revocation of a Beneficiary designation shall not require the consent
           of any designated Beneficiary. Payment to a Beneficiary shall be made
           in the form or forms elected in the Participant's Deferred Bonus
           Agreement or Agreements, provided that such payment shall be made in
           a single payment if a request for such a single payment is made by
           the Beneficiary and approved by the Plan Administrator.


                                   ARTICLE VII

                                 ADMINISTRATION

                  7.1 General. The Plan Administrator shall be charged with the
           administration of this Plan. The Plan Administrator shall have all
           such powers as may be necessary to discharge its duties relative to
           the administration of this Plan, including by way of illustration and
           not limitation, discretionary authority to interpret and construe
           this Plan, to decide any dispute arising hereunder, to determine the
           right of any individual with respect to participation herein, to
           determine the right of any Participant with respect to benefits
           payable under this Plan and to adopt, alter and repeal such
           administrative rules, regulations and practices governing the
           operation of this Plan as it, in its sole discretion, may from time
           to time deem advisable. The Plan Administrator shall not be liable to
           any person for any action taken or omitted in connection with the
           interpretation and administration of this Plan unless attributable to
           willful misconduct or lack of good faith. The Plan Administrator
           shall be entitled to rely conclusively upon all tables, valuations,
           certificates, opinions and reports furnished by any actuary,
           accountant, controller, counsel or other person employed or engaged
           by the Plan Administrator or an Employer with respect to this Plan.
           The Plan Administrator, if an individual, or the members thereof if
           the Plan Administrator





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           is a Committee, shall not participate in any action or determination
           regarding solely his or their own benefits payable hereunder. Except
           as provided in Section 7.3 hereof, decisions of the Plan
           Administrator made in good faith shall be final, conclusive and
           binding upon all parties.

                  7.2 Claims Procedure. Whenever the Plan Administrator denies,
           in whole or in part, a claim for benefits filed by any person
           (hereinafter referred to as a "Claimant"), the Plan Administrator
           shall transmit a written notice setting forth, in a manner calculated
           to be understood by the Claimant, a statement of the specific reasons
           for the denial of the claim, references to the specific provisions of
           this Plan on which the denial is based, a description of any
           additional needed material or information and why such material or
           information is necessary, and an explanation of the claims review
           procedure as set forth herein. In addition, the written notice shall
           contain the date on which the notice was sent and a statement
           advising the Claimant that, within 90 days of the date on which such
           notice is received, he may obtain review of the Plan Administrator's
           decision.

                  7.3 Review Procedure. Within 90 days of the date on which the
           notice of denial of claim is received by the Claimant, the Claimant
           or his authorized representative may request that the claim denial be
           reviewed by filing with the Plan Administrator a written request
           therefor, which request shall contain the following information:

                       (a)  the date on which the notice of denial of
           claim was received by the Claimant;

                       (b) the date on which the Claimant's request was filed
           with the Plan Administrator; provided, however, that the date on
           which the Claimant's request for review was in fact filed with the
           Plan Administrator shall control in the event that the date of the
           actual filing is later than the date stated by the Claimant pursuant
           to this clause (b);

                       (c)  the specific portions of the denial of his
           claim which the Claimant requests the Plan Administrator to
           review;

                       (d) a statement by the Claimant setting forth the basis
           upon which he believes the Plan Administrator should reverse its
           previous denial of his claim for benefits and accept his claim as
           made; and





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                       (e) any written material (included as exhibits) which the
           Claimant desires the Plan Administrator to examine in its
           consideration of his position as stated pursuant to clause (d).

                  Within 60 days of the date determined pursuant to clause (b)
           (or, if special circumstances require an extension of time, within
           120 days of such date), the Plan Administrator shall conduct a full
           and fair review of the decision denying the Claimant's claim for
           benefits and shall deliver, to the Claimant in writing, its decision.
           Such written decision shall set forth, in a manner calculated to be
           understood by the Claimant, a statement of the specific reasons for
           the decision, including references to the specific provisions of this
           Plan which were relied upon. The decision will be final and binding
           on all persons concerned.


                                  ARTICLE VIII
                            AMENDMENT AND TERMINATION

                  8.1 Power to Amend or Terminate. First Empire State
           Corporation expects to continue this Plan indefinitely, but reserves
           the right to amend or terminate this Plan at any time, if, in its
           sole judgment, such amendment or termination is necessary or
           desirable. Any such amendment or termination shall be made in writing
           by the Board or its designee, if applicable, and shall be effective
           as of the date specified in such document. No amendment or
           termination of this Plan shall directly or indirectly deprive any
           Participant or Beneficiary of all or any portion of the amounts
           previously credited to the Participant's Account. In the event of a
           termination of this Plan, First Empire State Corporation (or any
           transferee, purchaser or successor entity) may elect, in its
           discretion, either to have the Employers make a single payment, at
           the time of such termination, of the Account balances on such date to
           Participants and Beneficiaries or to have the Employers make payments
           to such individuals at such time or times as provided under the terms
           of this Plan.

                  8.2 Successor. This Plan shall not be automatically terminated
           by a transfer or sale of an Employer or by the merger or
           consolidation of an Employer into or with any other corporation or
           other entity, but it shall be continued with respect to such Employer
           or its successor after such sale, merger or consolidation only if and
           to the extent that the transferee, purchaser or successor entity
           agrees to continue this Plan. In the event this Plan is not continued
           with respect to such Employer or its successor by the transferee,
           purchaser or successor entity, then it shall terminate with





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           respect to such Employer or its successor subject to the
           provisions of Section 8.1 hereof.


                                   ARTICLE IX
                                  MISCELLANEOUS

                  9.1 No Effect on Employment Rights. Nothing contained herein
           will confer upon any Participant the right to be retained in the
           service of an Employer nor limit the right of an Employer to
           discharge or otherwise deal with Participants without regard to the
           existence of this Plan.

                  9.2 Plan Unfunded. Notwithstanding any provision herein to the
           contrary, the benefits offered hereunder shall constitute nothing
           more than unfunded, unsecured promises by each Employer to pay the
           amounts that such Employer is obligated to pay under this Plan. No
           provision shall at any time be made with respect to segregating any
           assets of any Employer for payment of any amounts hereunder. No
           Participant, Beneficiary or any other person shall have any interest
           in any particular assets of the Employers by reason of the right to
           receive a benefit under this Plan, and any such Participant,
           Beneficiary or other person shall have only the rights of a general
           unsecured creditor of the Employer obligated to make payments to the
           Participant under this Plan. Nothing contained in this Plan shall
           constitute a guaranty by the Employers or any other entity or person
           that the assets of any Employer will be sufficient to pay any amount
           hereunder. All expenses and fees incurred in the administration of
           this Plan shall be paid by the Employers.

                  9.3 Binding on Employers, Employees and Their Successors. This
           Plan shall be binding upon and inure to the benefit of the Employers,
           their successors and assigns and each Participant and his heirs,
           executors, administrators and legal representatives. In the event of
           the merger or consolidation of an Employer with or into any other
           corporation, or in the event substantially all of the assets of an
           Employer shall be transferred to another corporation, the successor
           corporation resulting from the merger or consolidation, or the
           transferee of such assets, as the case may be, shall, as a condition
           to the consummation of the merger, consolidation or sale, assume the
           obligations of such Employer hereunder as of the date of such merger,
           consolidation or transfer and shall be substituted for such Employer
           hereunder.

                  9.4  Spendthrift Provisions.  No amount payable under
           this Plan shall be subject in any manner to anticipation,
           alienation, sale, transfer, assignment, pledge, encumbrance or





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           charge prior to actual receipt thereof by the payee; and any attempt
           so to anticipate, alienate, sell, transfer, assign, pledge, encumber
           or charge prior to such receipt shall be void; and the Employers
           shall not be liable in any manner for or subject to the debts,
           contracts, liabilities, torts or engagements of any person entitled
           to any benefit under this Plan.

                  9.5 Disclosure. Each Participant shall receive a copy of this
           Plan, and the Plan Administrator will make available for inspection
           by any Participant a copy of the rules and regulations used by the
           Plan Administrator in administering this Plan.

                  9.6  State Law.  This Plan is established under and
           will be construed according to the laws of the State of New
           York to the extent that such laws are not preempted by ERISA.

                  9.7 Incapacity of Recipient. In the event a Participant or
           Beneficiary is declared incompetent and a guardian, conservator or
           other person legally charged with the care of his person or of his
           estate is appointed, any amounts to which such Participant or
           Beneficiary is entitled under this Plan shall be paid to such
           guardian, conservator or other person legally charged with the care
           of his person or his estate. Except as provided herein, when the Plan
           Administrator, in its sole discretion, determines that a Participant
           or Beneficiary is unable to manage his financial affairs, the Plan
           Administrator may direct the Employer, or Employers responsible for
           payment to make payments to any person for the benefit of such
           Participant or Beneficiary.

                  9.8 Unclaimed Benefit. Each Participant shall keep the Plan
           Administrator informed of his current address. The Plan Administrator
           shall not be obligated to search for the whereabouts of any person.
           If the location of a Participant is not made known to the Plan
           Administrator within three years after the date on which any payment
           of the Participant's benefit hereunder may be made, payment may be
           made as though the Participant had died at the end of the three-year
           period. If, within one additional year after such three-year period
           has elapsed, or, within three years after the actual death of a
           Participant, whichever occurs first, the Plan Administrator is unable
           to locate the Beneficiary of the Participant, the Participant and his
           Beneficiary shall forfeit all rights to any payments under this Plan.

                  9.9  Elections, Applications, Notices.  Every
           direction, revocation or notice authorized or required
           hereunder shall be deemed delivered to the Employers or the
           Plan Administrator as the case may be:  (a) on the date it is





                                       - 12 -


           personally delivered to the Plan Administrator (with a copy to the
           Bank's General Counsel) at the Bank's executive offices at Buffalo,
           New York or (b) three business days after it is sent by registered or
           certified mail, postage prepaid, addressed to the Plan Administrator
           (with a copy to the Bank's General Counsel) at the offices indicated
           above, and shall be deemed delivered to a Participant or Beneficiary:
           (a) on the date it is personally delivered to such individual, or (b)
           three business days after it is sent by registered or certified mail,
           postage prepaid, addressed to such individual at the last address
           shown for him on the records of the Employers. Any notice required
           hereunder may be waived by the person entitled thereto.

                  9.10 Severability. In the event any provision of this Plan
           shall be held illegal or invalid for any reason, such illegality or
           invalidity shall not affect the remaining provisions of this Plan.
           This Plan shall be construed and enforced as if such illegal or
           invalid provision had never been contained herein.

                  9.11 Headings. The headings of Sections of this Plan are for
           convenience of reference only and shall have no substantive effect on
           the provisions of this Plan.