UNITED STATES
               SECURITIES AND EXCHANGE COMMISSION
                     Washington D.C. 20549

                           FORM N-CSR

       CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT
                        INVESTMENT COMPANIES

                   1940 Act File No. 811-4421

                REGISTRATION STATEMENT UNDER THE
                 INVESTMENT COMPANY ACT OF 1940


               CO-OPERATIVE BANK INVESTMENT FUND
                   d/b/a Bank Investment Fund
       (Exact Name of Registrant as Specified in Charter)


                         75 Park Plaza
                Boston, Massachusetts 02116-3934
            (Address of Principal Executive Offices)

                         (617) 695-0415
                (Registrant's Telephone Number)


                      WILLIAM F.CASEY, JR.
                           President
                     Bank Investment Fund
                         75 Park Plaza
                Boston, Massachusetts 02116-3934
            (Name and Address of Agent for Service)


Date of fiscal year end:  12/31/2004


Date of reporting period: 12/31/2004

Form N-CSR is to be used by management investment companies to file reports
with the Commission not later than 10 days after the transmission to
stockholders of any report that is required to be transmitted to stockholders
under Rule 30e-1under the Investment Company Act  of 1940 (17 CFR270.30e-1).
The Commission may use the information provided on Form N-CSR in its
regulatory, disclosure review, inspection and policymaking roles.

A registrant is required to disclose the information specified by Form N-CSR,
and the Commission will make this information public. A registrant is not
required to respond to the collection of information contained in Form N-CSR
unless the Form displays a currently valid Office of Management and Budget
(``OMB``) control number. Please direct comments concerning the accuracy of
the information collection burden estimate and any suggestions for reducing
the burden to Secretary, Securities and Exchange Commission, 450 Fifth
Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection
of information under the clearance requirements of 44 U.S.C.  3507.


Item 1. Reports to Stockholders.





BANK INVESTMENT FUND  FUND ONE
(Series 1)
ANNUAL REPORT
December 31, 2004


OFFERING CIRCULAR
- -----------------

[LOGO]                      Bank Investment Fund
                                  Fund One
                                75 Park Plaza
                      Boston, Massachusetts 02116-3934
                                617-695-0415

                            --------------------

      The Bank Investment Fund (the "Corporation") is an investment company
which currently invests and manages two mutual funds derived from voluntary
subscriptions made by eligible investors.

      Fund One (the "Fund") is a no-load, diversified, open-end investment
fund whose objective is maximum current income consistent with liquidity
and the maintenance of a portfolio of high quality investments in short and
intermediate term marketable securities issued by the United States
Government and its agencies, repurchase agreements and certain money market
instruments. The Fund is designed solely for use by eligible investors as
an economical and convenient way to make liquid investments. Fund shares
are currently offered to the following eligible investors: Massachusetts
Co-operative Banks, Massachusetts Savings Banks, Massachusetts Trust
Companies, Federally Chartered Savings Banks and Savings and Loan
Associations with their principal place of business in Massachusetts, The
Co-operative Central Bank Reserve Fund, The Savings Bank Life Insurance
Company of Massachusetts, the National Cooperative Bank, and directly or
indirectly wholly-owned subsidiaries of such institutions (sometimes
hereinafter called "Banks").

      Investors should read this Offering Circular and retain it for future
reference.

      THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURI-
TIES AND EXCHANGE COMMISSION, NOR HAS THE COMMISSION PASSED UPON THE ACCU-
RACY OR ADEQUACY OF THIS OFFERING CIRCULAR. ANY REPRESENTATION TO THE
CONTRARY IS A CRIMINAL OFFENSE.

      THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
COMMISSIONER OF BANKS OF THE COMMONWEALTH OF MASSACHUSETTS (the
"Commissioner of Banks"), NOR HAS THE COMMISSIONER OF BANKS PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS OFFERING CIRCULAR. ANY REPRESENTATION TO THE
CONTRARY IS UNLAWFUL.

      THE SHARES BEING OFFERED ARE NOT SAVINGS ACCOUNTS OR DEPOSITS AND ARE
NOT INSURED OR GUARANTEED. SUCH SHARES ARE BEING OFFERED PURSUANT TO AN
EXEMPTION FROM THE SECURITIES ACT OF 1933 AND APPLICABLE STATE SECURITIES
ACTS AND HAVE NOT BEEN REGISTERED OR QUALIFIED UNDER SUCH ACTS.

                            --------------------

           The date of this Offering Circular is February 28, 2005





                              TABLE OF CONTENTS

                                                                       Page
                                                                       ----

Risk Return Summary                                                      1
  Investment Objectives                                                  1
  Principal Investment Strategies                                        1
  Principal Investment Risk                                              1
  Bar Chart and Performance Table                                        2
  Management Discussion                                                  4
  Fee Table                                                              4
Investment Objectives and Restrictions                                   5
Statutory Limitation on Investments                                      6
Dividends and Capital Gains                                              7
Net Asset Value                                                          7
Investors' Accounts                                                      7
Investors' Privacy                                                       7
Taxes                                                                    7
Auditors and Legal                                                       8
Yield                                                                    8
How Shares of Fund are Purchased                                         8
How Shares of Fund are Redeemed                                          9
Transfer Restrictions                                                   10
Organization                                                            10
Description of Fund Shares                                              11
Supervision and Regulation                                              11
Investment Advisor                                                      12
Transfer Agent                                                          12
Operating and Distribution Expenses                                     12
Exchange Privilege                                                      13
Custodian                                                               13
Management of the Fund                                                  14
Financial Highlights                                                    18
Independent Auditor's Report                                            20
Financial Statements                                                    21
Investments                                                             24
Notes to Financial Statements                                           26
Account Application Forms                                               30
Additional Information                                             Back Cover





                            BANK INVESTMENT FUND
                                  FUND ONE
                                75 Park Plaza
                      Boston, Massachusetts 02116-3934

                             RISK RETURN SUMMARY

Investment Objectives

      The investment objective of Fund One is to maximize current income
consistent with liquidity of assets and safety of principal.

      The Fund was formed to provide participating banks with a highly
liquid, diversified, high-quality investment vehicle designed to assist
liquidity management.

Principal Investment Strategies

      In addition to maintaining cash on hand and in checking accounts due
from banks, the Fund invests principally in short and intermediate term
marketable debt securities issued by the United States Government or by
agencies of the United States, repurchase agreements, reverse repurchase
agreements and money market instruments.

      The categories of those securities include, but may not be limited to
a) certificates of deposit due from any trust company, national banking
association or banking company, b) bonds and other direct obligations of
the United States or such obligations as are unconditionally guaranteed as
to principal and interest by the United States, c) federal agency
obligations which have unexpired terms of five years or less, d) repurchase
agreements, and e) certain common money market instruments.

      The Fund may enter into reverse repurchase agreements to meet short-
term liquidity needs of the Fund. These agreements may not be in excess of
three business days.

Principal Investment Risk

      The main risk factor in the Fund's performance is interest rates. The
yield and share price of the Fund change daily based on changes in interest
rates and market conditions, and in response to other economic, political
or financial events. The Fund's total return includes both income and price
gains or losses. While income is the most important component of returns
over time, the Fund's emphasis on income does not mean the Fund invests
only in the highest-yielding bonds and notes available, or that it can
avoid losses of principal. In general, bond and note prices rise when
interest rates fall and fall when interest rates rise. Longer-term bonds
and notes are usually more sensitive to interest rate changes. In other
words, the longer the maturity of a bond or note, the greater the impact a
change in interest rates is likely to have on the price.

      Debt securities are also subject to credit risk. Credit risk is the
risk that the issuer of a debt security might not make interest and
principal payments on the security as they become due. Securities directly
issued by the U.S.


  1


Treasury and certain U.S. government agencies that are backed by the full
faith and credit of the U.S. government have little credit risk. Securities
issued by other agencies of the U.S. government generally have low credit
risks.

      An additional risk factor in the Fund's performance is pre-payment
risk. Many types of debt securities, including mortgage backed securities
and callable bonds and notes may be subject to a prepayment risk.
Prepayment risk occurs when the issuer of a security can prepay principal
prior to the security's maturity. Securities subject to prepayment risk
generally offer less potential for gains during a declining interest rate
environment, and similar or greater potential for loss in a rising interest
rate environment. The risk of lower interest rates on reinvestments of
prepayment amounts will also result.

      These risk factors may adversely effect the Fund's net asset value,
yield, total return and loss of money in an investment in the Fund may
result.

Bar Chart and Performance Table

      The bar chart shows the changes of the Fund's total return
performance from year to year over a ten year period ended December 31,
2004.

      An investor bank may judge the Fund's portfolio performance by
comparing it to that of similar mutual funds or to market indices.
Performance may also be gauged by the total return of the portfolio over
time.

                        BANK INVESTMENT FUND-FUND ONE
                             ANNUAL TOTAL RETURN




            1995     1996    1997    1998    1999    2000    2001    2002    2003    2004
            ----     ----    ----    ----    ----    ----    ----    ----    ----    ----

<s>         <c>      <c>     <c>     <c>     <c>     <c>     <c>     <c>     <c>     <c>
Percent     12.78    4.10    7.12    6.32    2.40    8.59    6.91    4.20    1.58     0.71

<FN>
- --------------------
During the ten-year period shown in the bar chart, the highest quarterly
return was 18.1% (for the quarter ended June 30, 1995) and the lowest
quarterly return was - 4.7% (for the quarter ended June 30, 2004).
</FN>



  2


      The table shows how the Fund's average annual return for one, five
and ten years for the periods ended December 31, 2004 compares to the
Merrill Lynch Government/Agency 1-3 year index; a widely recognized, index
of fixed income securities. The index is representative of the securities
in which the Fund invests.




                                         One     Five     Ten
                                         Year    Year     Year
                                         ----    ----     ----

      <s>                                <c>     <c>      <c>
      Bank Investment Fund - Fund One    .71%    4.35%    5.41%
      Merrill Lynch Government/Agency
       1-3 year index                    .99%    5.04%    5.78%

<FN>
- --------------------
Total returns are based on past results and are not a prediction of future
performance.
</FN>


                        BANK INVESTMENT FUND-FUND ONE
                Investment Comparison-Initial Inv. $10,000.00




                       1994      1995      1996      1997      1998      1999      2000      2001      2002      2003      2004
                       ----      ----      ----      ----      ----      ----      ----      ----      ----      ----      ----

<s>                   <c>       <c>       <c>       <c>       <c>       <c>       <c>       <c>       <c>       <c>       <c>
Merrill Lynch 1-3     10,000    11,099    11,656    12,432    13,300    13,715    14,830    16,076    17,023    17,363    17,535
 Yr. Gov't Index
Fund One              10,000    11,278    11,740    12,576    13,371    13,692    14,869    15,897    16,564    16,826    16,945

<FN>
- --------------------
The line graph assumes an initial investment of $10,000, in Fund One and
the Merrill Lynch Government/Agency 1-3 year index at the beginning of the
first year. The line graph compares this initial and subsequent account
values at the end of the most recently completed ten years.
</FN>



  3


Management Discussion

      Fund One reported a total return of .71% for the year ended December
31, 2004. During the same period, the Merrill Lynch Government Agency 1-3
year index, which consists of government and Agency securities of
comparable maturities to the majority of the portfolio, has a total return
of .99%. Fund One's total return of 1.58% for the year ended December 31,
2003 was also slightly lower than the Merrill Lynch Government Agency 1-3
year index which had a total of 2.00%. Our portfolio strategy in 2003 and
2004 to primarily limit investments to callable securities with one-time
call protection, with maturities not exceeding June 2007 had caused some
lower yields and returns to be realized in both of these periods. Security
maturities and sales proceeds were used to meet redemption order for
liquidity purposes, and reinvestment on higher yielding securities was not
realized to the extent expected in 2004.

      Since the end of June, 2004 the Federal Open Market Committee (FOMC)
of The Federal Reserve Bank has increased the target rate for Federal Funds
five times for a total of 125 basis points. The Federal Funds target rate,
which remained at 1% from June 2003 to June 2004, was 2.25% at December 31,
2004. The primary credit rate has also been set at 100 basis points above
the target Federal Funds rate, and increased from 2.00% to 3.25% in the
later period of 2004.

      Fund One's portfolio turnover rate was 28.1% for 2004 compared to its
portfolio turnover ratio of 102.2% for 2003. The short-term interest rates
in 2001 through 2003 resulted in securities in the portfolio being called
at an accelerated rate, and resulted in larger than normal turnover ratio
in these years. Called security activity was greatly reduced in 2004 due to
both the anticipation of and actual short-term interest rate increases that
occurred as discussed above.

      In January 2005, we shortened the Fund One portfolio by selling many
of the longer dated securities and reinvesting the proceeds in maturities
of six months or less. We believe this defensive posture will protect asset
value and be more responsive to further increases in short-term interest
rates.

Fee Table

      This table describes the fees and expenses that you may pay if you
buy and hold shares of the Fund.




                                                                  Year Ended
                                                              December 31, 2004
                                                              -----------------

      <s>                                             <c>            <c>
      Shareholder Transaction Expenses*                                0%
      Annual Fund Operating Expenses
       (as a percentage of average net assets)
        Management Fees                                                0%
        12b-1 Fees                                                   .03%
        Other Expenses
          Compensation, Payroll, Taxes, & Benefits    .15%
          Occupancy                                   .07%
          Remainder                                   .13%
                                                      ---
                                                                     .35%
                                                                     ---
      TOTAL FUND OPERATING EXPENSES                                  .38%
                                                                     ===

<FN>
*     The Fund charges no sales load or deferred sales load on any
      purchase, reinvested dividend, exchange, or redemption transactions.
</FN>



  4


Example

      You would pay the following expenses on a $10,000 investment,
assuming (1) 5% annual return and (2) with or without redemption at the end
of each time period:




                           1 Year    3 Years    5 Years    10 Years
                           ------    -------    -------    --------

      <s>                  <c>       <c>        <c>        <c>
      December 31, 2004    $38.88    $122.72    $215.35    $491.73


      The purpose of the foregoing table, which is based upon the Fund's
fiscal year ended December 31, 2004, is to assist you in understanding the
various costs and expenses that an investor in the Fund will bear directly
or indirectly. The Example provided is intended to show the dollar amount
of expenses that would be incurred over the indicated periods on a
hypothetical $10,000 investment in the Fund, assuming a 5% annual return
and assuming that the Fund's expenses continue at the rates shown in the
table. However, the actual return on an investment in the Fund may be
greater or less than 5%. Furthermore, the Example should not be considered
a representation of past or future expenses; actual expenses may be greater
or less than those shown.

                   INVESTMENT OBJECTIVES AND RESTRICTIONS

      The investment objective of the Fund is to achieve as high a level of
current income as is consistent with safety of principal.

      The Fund was formed to provide participating banks with a highly
liquid, diversified, high-quality in-vestment vehicle designed to assist
liquidity management. By pooling the money of its investors, it is able to
offer the economies of size and diversification of maturities normally
available to large corporate and institutional investors.

      Shares of the Bank Investment Fund are eligible investments to be
included in legal liquidity under Massachusetts General Laws, Chapter 170,
Section 22.

      The Board of Directors of the Corporation has investment discretion
with regard to Fund One assets.

      The Corporation is authorized by statute to invest its assets in a
variety of debt and equity securities. No more than 5% of the Corporation's
assets, at the time of purchase, may be invested in the securities of any
one issuer except for direct obligations of the United States or
obligations guaranteed by the United States, and other obligations issued
under certain Federal programs or by certain federal agencies or
instrumentalities.

      The Fund is further restricted through the investment policy
maintained by the Corporation's Officers and Directors. The investment
policy for the Fund restricts the Corporation from a) making any investment
in equity securities for the Fund, b) making any intermediate or long-term
investment in corporate (non-governmental) debt securities for the Fund and
c) investing more than 25% of the Fund's total assets in the securities of
a particular industry other than U.S. Government or Federal agency
securities.


  5


               STATUTORY LIMITATION ON INVESTMENTS IN THE FUND
                           BY PARTICIPATING BANKS

      Under Massachusetts General Laws, Chapter 167F, Section 3(2) as
amended, a participating or eligible savings bank or co-operative bank may
invest an amount in excess of 100% of its capital and surplus in any
distinct non-equity investment fund of the Corporation except to the extent
that the Commissioner of Banks for the Commonwealth of Massachusetts may by
regulation set limits and conditions. The participating bank will be
responsible for monitoring and compliance with this limitation.

      Under Massachusetts General Laws, Acts of 1932, Chapter 45, Section
7, as amended, The Co-operative Central Bank Reserve Fund may not invest or
hold at any one time more than 20% of its assets with the Corporation.

      Investments in the Fund are affected by Section 303 of the FDIC
Improvement Act of 1991 which limits investments by FDIC-insured state
banks (including Massachusetts co-operative banks, savings banks and trust
companies) in common or preferred stock or shares of mutual funds to the
extent that such investments are permissible for national banks.
Permissible national bank investments, as described in section 24(7) of the
National Bank Act and 12 C.F.R. Part 1, include mutual funds which invest
in securities and financial investments eligible for direct investment by
national banks. Because the underlying investment portfolio composition of
Fund One is comprised of U.S. Government and Federal Agency Securities,
Fund One balances may be excluded (on a pass through basis with shares of
beneficial interest) from an FDIC-insured state-chartered bank's
computation of equity securities in measuring compliance with 12 C.F.R.
Part 362 limits (usually 100% of Tier 1 capital).

      Federally chartered savings banks and savings and loan associations
(with their principal place of business in Massachusetts) may invest in an
open-end mutual fund, such as Fund One, which invests in securities and
financial instruments in which such institutions may invest directly. For
purposes of determining compliance with quantitative investment limitations
under the Home Owners Loan Act ("HOLA"), an investing bank's or
association's proportionate share of a mutual fund's individual investments
will, under 12 C.F.R., [SECTION]560.32, be aggregated with such investments
held directly. (The investments held by Fund One may also be held without
limitation by federally chartered savings banks and savings and loan
associations.) Apart from compliance with applicable investment
limitations, a bank or association may invest, without prior notice to the
Office of Thrift Supervision, an amount up to 15% of its total capital in
any one mutual fund, or up to 50% of total capital in all such pass-through
investment vehicles. Investments in excess of the 15% and 50% limits may
only be made when thirty days' advance notice has been provided to the
Office of Thrift Supervision.

      Certain federally chartered savings banks who converted from a
Massachusetts savings bank charter may, under certain grandfather
provisions of HOLA, retain broader investment authority than that described
in the preceding paragraph. For example, section 5(i) of HOLA grandfathers
state authorized investment powers of certain Federal savings banks in
existence as of the date of enactment of Federal statutes (e.g., the
Financial Institution Reform, Recovery, and Enforcement Act of 1989) which
may have otherwise limited such investments.


  6


                         DIVIDENDS AND CAPITAL GAINS

      The Fund distributes all of its net income on a daily basis.
Dividends are declared on each day that the Fund is open for business.
Investors receive dividends in additional shares unless they elect to
receive cash. Payment is made in additional shares at the net asset value
on the payable date or in cash, on a monthly basis.

      Investors wishing to change the method of receiving dividends must
notify the Fund in writing at least one week before payment is to be made.

      Net income of the Fund consists of all interest income accrued and
earned, less estimated expenses of the Fund. Distributions of realized net
capital gains, if any, are declared and paid once each year and are
reinvested in additional shares at net asset value or, at each
shareholder's option, paid in cash.

                               NET ASSET VALUE

      The Fund's net asset value per share is determined as of the close of
the New York Stock Exchange. The net asset value per share is determined by
adding the appraised value of all securities and all other assets,
deducting liabilities and dividing by the number of shares outstanding.
U.S. debt securities are normally valued on the basis of valuations
provided by market makers. Such prices are believed to reflect the fair
value of such securities and to take into account appropriate factors such
as institutional size trading in similar groups of securities, yield
quality, coupon rate, maturity, type of issue, and other market data.
Securities for which market quotations are not readily available will be
valued at fair value using methods determined in good faith by or at the
direction of the Board of Directors.

                             INVESTORS' ACCOUNTS

      The Fund maintains an account for each investor in full and
fractional shares. All purchase and sale transactions are confirmed to the
investor. Statements of account showing all transactions for the month,
including dividends paid, are sent to participating banks on a monthly
basis. In addition, statements of account showing all transactions for the
calendar year, including dividends paid, are sent to participating banks on
an annual basis.

                             INVESTORS' PRIVACY

      Protecting the privacy and confidentiality of investor's account
information is important to the Fund. We value your business and the trust
you placed with us. The Fund does not share any non-public information
concerning our investor banks with any other party; except as necessary, to
process transactions or service accounts. In addition, we maintain physical
and electronic control procedures to safeguard our business records
relative to investor accounts.

                                    TAXES

      The Fund has qualified as a regulated investment company under the
Internal Revenue Code and will not be liable for federal income taxes to
the extent its earnings are distributed. Dividends derived from interest,
together


  7


with distributions of any short-term capital gains, are taxable as ordinary
income, whether or not reinvested. Dividends of the Fund do not qualify for
the dividends received exclusion for corporations.

      Distributions of net long-term capital gains, if any, realized by the
Fund are made at least annually and are taxable to shareholders. In
addition, an investing Bank may realize a capital gain or loss in any year
in which it redeems shares. It should be noted that long-term capital gain
distributions and/or capital gains or losses realized from redemptions are
taxed at the same rates as ordinary income under the provisions of the Tax
Reform Act of 1986.

      A statement setting forth the federal income tax status of all
distributions made during each calendar year is sent to each shareholder
promptly after the end of such year.

                             AUDITORS AND LEGAL

      Parent, McLaughlin and Nangle, Certified Public Accountants, Inc.,
are the auditors of the Fund. The law firm of Steptoe and Johnson has
passed upon certain legal matters of the Fund in connection with the shares
offered by this offering circular.

                                    YIELD

      The yield for the 30-day period ended December 31, 2004 was 2.62%.
Yield is calculated based on the 30 days ending on the date of the most
recent statement of Assets and Liabilities, (as presented elsewhere
within). A standard formula as required by the Securities and Exchange
Commission is utilized for the computation of this yield amount. Net
Investment Income in the formula differs from actual Net Investment Income
as included in the Statement of Operations (included elsewhere within). Net
Investment Income as reflected in the formula includes yield based upon
market valuation of the portfolio at the commencement of the 30 day period.
This yield amount may differ from the ratio of Net Investment Income to
Average Net Assets reflected in selected financial information (as
presented elsewhere within). The Fund yield fluctuates as a result of
numerous factors. Therefore, the yield stated here is not necessarily
representative of the Fund's future yield. The 30 day yield, for the most
recent calender month end, may be obtained by directly calling the Rate
Line 617-695-0419 or by calling our main office telephone number 617-695-
0415 collect.

                  HOW THE SHARES OF THE FUND ARE PURCHASED-
                       TELEPHONE INVESTMENT PROCEDURE

      Shares of the Fund are offered for sale on days on which the New York
Stock Exchange is open for business. The Fund and its custodian bank
observe the following holidays during the calendar year: New Year's Day,
Martin Luther King Day, President's Day, Memorial Day, Independence Day,
Labor Day, Columbus Day, Veteran's Day, Thanksgiving Day and Christmas Day.
There is no sales charge. The minimum initial investment is $50,000.00.
Additional investments may be made in any amount in excess of the minimum.


  8


Bank Wire Transfers

      Call your correspondent bank and speak to your account officer. Tell
him that you want to transfer funds to State Street Bank and Trust Company.
Instruct him to wire transfer the money before 4:00 P.M., Eastern Standard
Time, to:

            State Street Bank and Trust Company
            Boston, Massachusetts
            Routing number: 0110-0002-8
            For account of the Bank Investment Fund, Fund One
            Account number: 9006-930-3

Internal Money Transfers

      If your correspondent bank account is with the State Street Bank and
Trust Company, contact your account officer and instruct him to transfer
funds from your account to the account of the Bank Investment Fund, Fund
One, Account number: 9006-930-3.

      AFTER INSTRUCTING YOUR BANK TO TRANSFER FUNDS, PLEASE CALL THE FUND
AND TELL US THE AMOUNT YOU TRANSFERRED AND THE NAME OF THE BANK SENDING THE
TRANSFER. YOUR BANK MAY CHARGE A FEE FOR SUCH SERVICES. REMEMBER, IT IS
IMPORTANT TO DO THIS BEFORE 4:00 P.M. EASTERN STANDARD TIME.

      The securities market, in which the Fund buys and sells securities,
usually requires immediate settlement in Federal funds for all security
transactions; therefore, payment for the purchase of Fund shares must be
made by Federal funds or bank wire, which can be converted immediately into
Federal funds. Orders received prior to 4:00 P.M., Eastern Standard Time,
will be invested in shares of the Fund at the next determined net asset
value.

                    HOW SHARES OF THE FUND ARE REDEEMED-
                       TELEPHONE REDEMPTION PROCEDURE

      An investor may withdraw all or any portion of his investment by
redeeming shares on any day that the Fund is open for business at the next
determined net asset value. The proceeds of redemptions will be wired
directly to the investor's bank account within one business day.

      The right of redemption can be suspended and the payment of the
redemption proceeds deferred during any period in which a) the New York
Stock Exchange is closed or trading on such Exchange is restricted or b)
the Securities and Exchange Commission deems an emergency to exist, or
during any other period permitted by order of the Commission for the
protection of investors.


  9


Bank Wire Transfers

      Call the Fund by 4:00 P.M. Eastern Standard Time to redeem shares
that day (Trade Date), for payment on the following day (Settlement Date).
When the amount to be redeemed is at least $5,000.00, the Fund will
automatically wire transfer the amount to your correspondent bank account
at settlement. The Fund will make payment by check when the amounts
redeemed are less than $5,000.00.

Internal Money Transfers

      If your bank's account is with the State Street Bank and Trust
Company, contact the Fund by 4:00 P.M. Eastern Standard Time for redemption
of shares that day (Trade Date) for payment the following day (Settlement
Date). The Fund will transfer the amount from its account to your account
at State Street Bank and Trust Company at settlement.

                            TRANSFER RESTRICTIONS

      Fund shares may not be transferred by banks holding such shares to
any persons other than an eligible bank (except that the shares may be
pledged to such other persons or they may be transferred to The Co-
operative Central Bank, hereinafter the "Central Bank"). If the Fund shares
are acquired by any other persons by operation of law or by foreclosure
upon the pledge of such shares (or through transfer, in the case of the
Central Bank), the Corporation must offer to repurchase the shares from
such person at net asset value of the shares. If such offer is refused, no
dividend may be paid by the Corporation or Fund on such shares, and the
redemption price which the holder of such shares may obtain in any
subsequent repurchase of those shares by the Corporation or Fund is limited
to the net asset value of the shares on the date of the Corporation's
offer.

      In the event of any transfer, it is extremely important to notify the
Corporation immediately of any purchase, sale or transfer of Fund shares
not made through the Corporation or its transfer agent. Immediate
notification should be furnished to the Corporation by telephone, with
written notification as a follow-up thereto. Prompt notification is
essential to avoid any delay in redemption offer and loss of earnings.
Please remember that a statutory restriction exists on the Corporation and
it would be unable to pay a dividend to an ineligible holder after expiry
of the 30-day repurchase period which is statutorily available following
such transfer.

                                ORGANIZATION

      The Corporation was organized effective April 7, 1985 pursuant to a
Special Act of the Commonwealth [Acts of 1984, Chapter 482 as amended] of
Massachusetts under its chartered name "Co-operative Bank Investment Fund"
and does business under the name "Bank Investment Fund." The Special Act
indicates that the purpose of the Corporation is to hold, invest, reinvest
and manage one or more mutual investment funds, which shall include all
property of the Corporation, to be derived from voluntary subscription
thereto by the Banks.

      The Corporation is an open-end diversified management investment
company authorized to invest its assets in certain real estate mortgages,
and a variety of other investments, including direct obligations of the
United States, obligations guaranteed by the United States, obligations
guaranteed by the Federal National Mortgage Association, bonds and other
evidences of indebtedness of corporations, shares of common or preferred
stock registered on a national securities exchange or for which quotations
are available through the National Quotation Bureau, Inc.


  10


or a comparable service, or through a national securities market
established in conformance with Section 11A of the Securities Act of 1934,
and other debt and equity securities. Fund One will only invest in those
securities described under "Principal Investment Strategies" and
"Investment Objectives and Restrictions" elsewhere herein.

      The business of the Corporation is conducted by a Board of Directors
elected by the Corporation's Incorporators and the Directors have
investment discretion relative to Corporation assets. The Incorporators of
the Corporation are the Directors of The Co-operative Central Bank, which
is the statutory reserve bank and insurer of deposits in excess of Federal
deposit insurance limitations for Massachusetts co-operative banks.

      The Corporation operates pursuant to an exemption from the sections
of the Investment Company Act of 1940 which deal with (a) voting rights of
security holders and (b) the manner of sale of redeemable shares.

      Only Massachusetts Co-operative Banks, Massachusetts Savings Banks,
Massachusetts Trust Companies, Federally Chartered Savings Banks and
Savings and Loan Associations with their principal place of business in
Massachusetts, The Co-operative Central Bank Reserve Fund, The Savings Bank
Life Insurance Company of Massachusetts, The National Cooperative Bank and
directly or indirectly wholly-owned subsidiaries of such institutions are
currently offered shares in the Fund. Such investors may purchase shares of
beneficial interest, which do not entitle the shareholders thereof to
voting rights of any nature, including investment policy matters.

                         DESCRIPTION OF FUND SHARES

      The Corporation has no capital stock. Beneficial ownership in each of
the Corporation's funds is represented by shares of beneficial ownership,
as recorded in book entry form. Each share is equal in every respect to
every other share, except that if the Directors of the Corporation
establish distinct investment funds, shares will be issued in distinct
classes and each share within each class will be equal in every respect to
every other share of that class.

      The shares of beneficial ownership are no par, non-voting, with a
stated value of $1,000, issued in book entry form only. Investment and
redemption of shares is effected at the net asset value as described
elsewhere herein. Shares are recorded in whole and/or fractional shares, as
applicable. Physical certificates are not issued. Monthly statements are
furnished to reflect share balance and activity.

      With regard to the absence of voting rights, management believes that
eligible investors are adequately protected because of a) regulation by the
Commissioner of Banks, b) the redeemable nature of the shares, c)
representation of co-operative bank investors in the election of Directors
of the Central Bank, who as Incorporators elect the Corporation's
Directors, and d) representation of savings bank investors by an advisor at
such corporate meetings of the Incorporators.

                         SUPERVISION AND REGULATION

      As provided by Massachusetts statute [Chapter 482, Acts of 1984 as
amended] the Corporation is subject to the supervision of the Commissioner
of Banks of the Commonwealth of Massachusetts. Periodic reporting to the
Commissioner of Banks is also required by the same statute. The Corporation
is registered as an open-end diversi-


  11


fied management investment company under the Investment Company Act of
1940, as amended, and is subject to reporting requirements thereunder.

                             INVESTMENT ADVISOR

      The Corporation presently does not employ the services of any
investment advisory or management services company. Investment decisions
for the Fund are made by authorized officers of the Corporation, subject to
approval or ratification by its Board of Directors. The Corporation
reserves the right at any time in the future to appoint an investment
advisor at any reasonable and customary fee as may be agreed when, in the
opinion of the Corporation Directors, the use of such advisory or
management services would improve Fund performance.

                               TRANSFER AGENT

      The Corporation maintains the records for the investment, redemption,
and/or transfer of Fund shares. The Corporation reserves its right at any
time in the future to appoint a separate transfer agent at any reasonable
and customary fee as may be agreed when, in the opinion of the Corporation
Directors, the use of such transfer service is necessary. The limited
number of shareholders and nature of Fund operation does not, at this time,
justify the use of a separate agent and would only be an extra or
unnecessary expense.

                     OPERATING AND DISTRIBUTION EXPENSES

      Normal expenses which may be borne by the Fund include, but are not
limited to: Director fees, salaries and wages, payroll taxes, employee
benefits, taxes, corporate fees, occupancy, furniture and equipment, data
processing, legal, auditing and accounting, telephone and postage,
custodial and other bank fees, preparation, printing and distribution of
reports, insurance, membership fees, organization, and other miscellaneous
expenses.

      The Corporation has adopted a plan of distribution pursuant to Rule
12b-1 of the Investment Company Act of 1940 (the "Plan") providing that the
Fund will pay certain expenses incurred by the Corporation which may be
considered to be primarily intended to result in the sale of shares in the
Fund. The expenses which may be incurred pursuant to the Plan include,
without limitation, those for the preparation, printing and distribution of
written materials for other than existing investors, preparation and
distribution of advertising material and sales literature, direct payments
to sales personnel, and other similar activities. The maximum expenditures
which may be made pursuant to the Plan in any year is .12 of 1% of the
average daily net asset value of the Corporation for such year. The Board
of Directors of the Corporation has concluded that there is a reasonable
likelihood that the Plan will benefit the Fund and its shareholders.

      Expenditures of $21,392 (.03% of average net assets) pursuant to the
12b-1 plan were incurred in and for the year ended December 31, 2004: $955
for advertising in trade journals and similar publications; $5,028 for
printing and mailing of offering circulars; $17,850 for sales related
compensation, payroll taxes and benefits; $4,907 for sponsorship of annual
subscriptions and other promotional materials; and ($7,348) for other plan
expenses.


  12


      Because more than one fund will be operated by the Corporation,
operating expenses and expenses incurred pursuant to the Plan related
directly to a single fund operation will be charged directly to that fund.
Common or indirect expenses will be allocated among funds in accordance
with the annual budget as determined by the Board of Directors of the
Corporation to be fair and equitable or on such other basis as the Board of
Directors of the Corporation may determine from time to time to be fair and
equitable.

      The Fund reimburses the Co-operative Central Bank and receives
reimbursement from the Bank Investment Fund-Liquidity Fund for its
proportionate share of expense items used in common. All fees and expenses
for the Fund are estimated and accrued daily. Actual operating expenses for
the year ended December 31, 2004 were .38% of average net assets. As
reimbursement of allocated expenses, operating expenses paid to the Central
Bank for the year ended December 31, 2004 were $63,300. The Fund accrued or
received from the Bank Investment Fund-Liquidity Fund for the year ended
December 31, 2004 the amount of $173,900.

                             EXCHANGE PRIVILEGE

      Shares of the Fund may be exchanged for shares of another fund on the
basis of the respective net asset value of the shares involved, to the
extent that additional funds are established by the Corporation.

                                  CUSTODIAN

      The Corporation is required by statute to at all times employ a
national banking association located in the Commonwealth of Massachusetts,
or a Massachusetts state-chartered bank authorized to exercise trust
powers, as the Corporation's or Fund's custodian, to hold the securities
owned by the Corporation and any monies delivered by the Corporation's or
Fund's shareholders or due to the Corporation or Fund. Purchase and sale
transactions are effected through or by the custodian bank upon the
instructions of the Corporation.

      The State Street Bank and Trust Company, 225 Franklin Street, Boston,
MA 02110 serves as custodian of the Fund's cash and investments.


  13


                           MANAGEMENT OF THE FUND

      The Incorporators of the Corporation are the Directors of The Co-
operative Central Bank which is the statutory reserve bank and insurer of
deposits in excess of Federal deposit insurance limitations for
Massachusetts co-operative banks. The Board of Directors of the Corporation
is elected by the Incorporators.

      William F. Casey, Jr., President, has been the Fund's primary
investment officer since April 1, 2000. Previously, Mr. Casey held the
position of Executive Vice President of the Bank Investment Fund since its
inception in 1985. Mr. Casey is also President of the Co-operative Central
Bank and served as Financial Vice President from 1980 to 1986 and Executive
Vice President and Treasurer of the Co-operative Central Bank from 1986 to
2000. Mr. Casey is a Certified Public Accountant and had been employed in
several executive positions in both public accounting and banking prior to
1980.

      The Fund is governed by a Board of Directors that meets quarterly to
review the Fund's investments, performance, expenses, and other business
affairs. The Board elects the Fund's officers. All Board members are
independent directors.

      The directors and officers of the Corporation are not eligible to
hold the equity securities of the Corporation; the Corporation's charter
limits its eligible shareholders to certain Massachusetts banks and certain
other institutions. The directors are also directors and/or officers of co-
operative banks which may own beneficial interests in shares of the Fund.

      Robert W. Terravecchia, Jr. was elected as a director in May 2003 by
the Board of Incorporators and appointed as an additional member of the
audit committee in June 2003 by the Board of Directors. Mr. Terravecchia is
both an attorney and certified public accountant in Massachusetts. Mr.
Terravecchia has been an officer of Weymouth Bank since 1994 and held
several positions in public accounting prior thereto. Mr. Terravecchia has
been designated as the audit committee member with financial expertise.

      Directors and Officers of the Corporation, together with information
as to their principal business occupations during the past five years, are
shown below:




                                                                                                       Number of
                                                                                                      Portfolios         Other
                                                           Term of                                      in Fund      Directorships
                                                         Office and                                     Complex        of Public
         Name, Age                Position(s) Held        Length of       Principal Occupation(s)     Overseen by      Companies
        and Address                  With Fund           Time Served        During Past 5 Years        Directors         Held
        -----------               ----------------       -----------      -----------------------     -----------    -------------

<s>                            <c>                       <c>            <c>                                <c>           <c>
William F. Casey, Jr.          President (since          Yearly         President of The                   2             None
(60)                           April 1, 2000);           since 1985     Co-operative Central
75 Park Plaza,                 Executive Vice                           Bank,
Boston, MA                     President prior                          Boston, Massachusetts
02116-3934                     thereto                                  (since April 1, 2000);
                                                                        Executive Vice President
                                                                        and Treasurer of The
                                                                        Co-operative Central
                                                                        Bank prior thereto


  14




                                                                                                       Number of
                                                                                                      Portfolios         Other
                                                           Term of                                      in Fund      Directorships
                                                         Office and                                     Complex        of Public
         Name, Age                Position(s) Held        Length of       Principal Occupation(s)     Overseen by      Companies
        and Address                  With Fund           Time Served        During Past 5 Years        Directors         Held
        -----------               ----------------       -----------      -----------------------     -----------    -------------

<s>                            <c>                       <c>            <c>                                <c>           <c>
Susan L. Ellis                 Vice President            Yearly         Vice President of The              2             None
(55)                           and Treasurer             since 1985     Co-operative Central
75 Park Plaza,                                                          Bank,
Boston, MA                                                              Boston, Massachusetts
02116-3934

Annemarie Lee                  Vice President            Yearly         Vice President of The              2             None
(46)                           and Clerk of the          since 1985     Co-operative Central
75 Park Plaza,                 Corporation                              Bank,
Boston, MA                     (since June 19, 2003);                   Boston, Massachusetts
02116-3934                     and Vice President
                               prior thereto

John R. McSorley               Vice President            Yearly         Vice President of                  2             None
(62)                                                     since 2003     R. Seelaus & Co., Inc.
75 Park Plaza,                                                          Boston, Massachusetts
Boston, MA                                                              (2002-2003); Vice President
02116-3934                                                              of PaineWebber Inc.,
                                                                        Boston, Massachusetts
                                                                        (1977-2000)

Peter W. Copelas               Director                  Term ends      President of the Heritage          2             None
(62)                                                     2006, since    Co-operative Bank,
5 Mustang Circle                                         2004           Salem, Massachusetts
Danvers, MA
01923

James F. Culhane               Director and              Term ends      Chairman of the Board of           2             None
(74)                           Chairman of the           2006, since    the North Cambridge
75 Charles Diersch St.,        Board                     2000           Co-operative Bank,
E. Weymouth, MA                                                         Cambridge, Massachusetts
02189                                                                   (since May 2002) and
                                                                        President prior thereto

Alfonso De Vito                Director*                 Term ends      Chairman of the Board              2             None
(68)                                                     2006, since    of The Village Bank,
26 Rustic Street,                                        1999           Newton, Massachusetts
Newton, MA
02458


  15




                                                                                                       Number of
                                                                                                      Portfolios         Other
                                                           Term of                                      in Fund      Directorships
                                                         Office and                                     Complex        of Public
         Name, Age                Position(s) Held        Length of       Principal Occupation(s)     Overseen by      Companies
        and Address                  With Fund           Time Served        During Past 5 Years        Directors         Held
        -----------               ----------------       -----------      -----------------------     -----------    -------------

<s>                            <c>                       <c>            <c>                                <c>           <c>
Edward T. Mulvey               Director*                 Term ends      Chairman of the Board              2             None
(69)                                                     2005, since    of the Pilgrim
50 Pond Street,                                          1999           Co-operative Bank,
Cohasset, MA                                                            Cohasset, Massachusetts
02025

Harold S. Otto                 Director                  Term ends      President of the Methuen           2             None
(54)                                                     2005, since    Co-operative Bank
44 Laconia Circle                                        2002           Methuen, Massachusetts
North Andover, MA
01845

Robert W. Terravecchia, Jr.    Director*                 Term ends      President of the Weymouth          2             None
(40)                                                     2007, since    Bank,
15 Tayla Drive,                                          2003           Weymouth, Massachusetts
Weymouth, MA                                                            (since 2000) and Treasurer
02189                                                                   prior thereto

Joseph F. Truskowski, Jr.      Director                  Term ends      President of the                   2             None
(54)                                                     2007, since    Adams Co-operative
55 Orchard Hill                                          2004           Bank,
North Adams, MA                                                         Adams, Massachusetts
02145

<FN>
*  Members of the Audit Committee
</FN>



  16


                            --------------------
                     THIS PAGE LEFT BLANK INTENTIONALLY
                            --------------------


  17


                            FINANCIAL HIGHLIGHTS
               (For a share outstanding throughout each year)

      The financial highlights table is intended to help you understand the
Fund's financial performance for the past 10 years. Certain information
reflects financial results for a single fund share. The total returns in
the table represent the rate that an investor would have earned (or lost)
on an investment in the Fund (assuming reinvestment of all dividends and
distributions). This information has been audited by Parent, McLaughlin &
Nangle, whose report, along with the Fund's financial statements, are
included elsewhere herein.




                                                                 Year Ended December 31,
                                                          ------------------------------------
                                                            2004         2003          2002
                                                            ----         ----          ----

<s>                                                       <c>          <c>           <c>
Net asset value, beginning of year                        $ 992.27     $1,000.47     $  998.09
                                                          --------     ---------     ---------
Income from investment operations:
  Net investment income                                      20.06         23.86         38.68
  Net realized and unrealized gain (loss)
   on investment transactions                               (13.10)        (8.20)         2.38
                                                          --------     ---------     ---------
      Total from investment operations                        6.96         15.66         41.06
                                                          --------     ---------     ---------

Less distributions:
  Dividends from net investment income                      (20.06)       (23.86)       (38.68)
  Distributions from capital gains                            0.00          0.00          0.00
                                                          --------     ---------     ---------
      Total distributions                                   (20.06)       (23.86)       (38.68)
                                                          --------     ---------     ---------
Net asset value, end of year                              $ 979.17     $  992.27     $1,000.47
                                                          ========     =========     =========
      Total return                                           0.71%         1.58%         4.20%

Ratios/Supplemental data:
  Net assets, end of year (in 000's)                      $ 49,568     $  89,935     $ 214,692
  Ratio of expenses to average net assets                    0.38%         0.18%         0.25%
  Ratio of net investment income to average
   net assets                                                2.06%         2.45%         3.73%
  Portfolio turnover rate                                   28.08%       102.16%        80.30%


      Portfolio turnover was computed including U.S. Governments and U.S.
Government Agency obligations with maturities in excess of one year.

                     See notes to financial statements.


  18





                                                                            Year Ended December 31,
                                                --------------------------------------------------------------------------------
                                                  2001        2000        1999        1998        1997        1996        1995
                                                  ----        ----        ----        ----        ----        ----        ----

<s>                                             <c>         <c>         <c>         <c>         <c>         <c>         <c>
Net asset value, beginning of year              $ 981.89    $ 956.42    $ 987.50    $ 983.75    $ 974.80    $ 996.20    $ 944.75
                                                --------    --------    --------    --------    --------    --------    --------
Income from investment operations:
  Net investment income                            50.27       53.96       54.08       56.88       58.35       60.41       66.14
  Net realized and unrealized gain (loss)
   on investment transactions                      16.20       25.47      (31.08)       3.75        8.95      (21.40)      51.45
                                                --------    --------    --------    --------    --------    --------    --------
      Total from investment operations             66.47       79.43       23.00       60.63       67.30       39.01      117.59
                                                --------    --------    --------    --------    --------    --------    --------

Less distributions:
  Dividends from net investment income            (50.27)     (53.96)     (54.08)     (56.88)     (58.35)     (60.41)     (66.14)
  Distributions from capital gains                  0.00        0.00        0.00        0.00        0.00        0.00        0.00
                                                --------    --------    --------    --------    --------    --------    --------
      Total distributions                         (50.27)     (53.96)     (54.08)     (56.88)     (58.35)     (60.41)     (66.14)
                                                --------    --------    --------    --------    --------    --------    --------
Net asset value, end of year                    $ 998.09    $ 981.89    $ 956.42    $ 987.50    $ 983.75    $ 974.80    $ 996.20
                                                ========    ========    ========    ========    ========    ========    ========
      Total return                                 6.91%       8.59%       2.40%       6.32%       7.12%       4.10%      12.78%

Ratios/Supplemental data:
  Net assets, end of year (in 000's)            $109,089    $106,536    $113,205    $128,475    $143,608    $151,591    $146,555
  Ratio of expenses to average net assets          0.34%       0.52%       0.52%       0.48%       0.45%       0.43%       0.45%
  Ratio of net investment income to average
   net assets                                      5.08%       5.64%       5.59%       5.74%       5.98%       6.21%       6.75%
  Portfolio turnover rate                        120.13%       6.42%      26.48%      50.00%      25.93%      49.26%      84.45%


                     See notes to financial statements.


  19


Form of Letterhead of Parent, McLaughlin & Nangle

                        INDEPENDENT AUDITOR'S REPORT

TO THE SHAREHOLDERS AND BOARD OF DIRECTORS
 BANK INVESTMENT FUND-FUND ONE
 BOSTON, MASSACHUSETTS

      We have audited the accompanying statement of assets and liabilities
of Bank Investment Fund-Liquidity Fund, including the schedule of portfolio
of investments, as of December 31, 2004, and the related statement of
operations for the year then ended, the statement of changes in net assets
for each of the two years in the period then ended, and the financial
highlights for each of the ten years in the period then ended. These
financial statements and financial highlights are the responsibility of the
Fund's management. Our responsibility is to express an opinion on these
financial statements and financial highlights 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 and financial highlights are free of
material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial
statements. Our procedures included confirmation of securities owned as of
December 31, 2004, by correspondence with the custodians and brokers. 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 and financial highlights
referred to above present fairly, in all material respects, the financial
position of Bank Investment Fund-Liquidity Fund as of December 31, 2004,
the results of its operations for the year then ended, the changes in its
net assets for each of the two years in the period then ended, and the
financial highlights for each of the ten years in the period then ended, in
conformity with accounting principles generally accepted in the United
States of America.

                                       /s/ Parent, McLaughlin & Nangle

                                         Certified Public Accountants

             Member of Public Company Accounting Oversignt Board


Boston, Massachusetts
January 20, 2005


  20


                        BANK INVESTMENT FUND-FUND ONE

                     STATEMENT OF ASSETS AND LIABILITIES
                              December 31, 2004



<s>                                                                               <c>
ASSETS:
  INVESTMENTS IN SECURITIES, at value
   (Identified cost $48,099,517)                                                  $ 47,433,898

  REPURCHASE AGREEMENTS                                                              1,810,000

  INTEREST RECEIVABLE                                                                  351,339

  OTHER ASSETS                                                                             210

  CASH                                                                                  89,601
                                                                                  ------------

    TOTAL ASSETS                                                                    49,685,048
                                                                                  ------------

LIABILITIES:
  DIVIDENDS PAYABLE                                                                     44,690

  ACCRUED EXPENSES                                                                      72,708
                                                                                  ------------

    TOTAL LIABILITIES                                                                  117,398
                                                                                  ------------

NET ASSETS: (Equivalent to $979.1735 per share based on 50,621.9280 shares of
 beneficial interest outstanding)                                                 $ 49,567,650
                                                                                  ============

REPRESENTED BY:
  Paid-in Capital                                                                 $ 67,442,844
  Accumulated net losses on investments                                            (17,209,575)
  Unrealized depreciation of investments-net                                          (665,619)
                                                                                  ------------

    TOTAL NET ASSETS                                                              $ 49,567,650
                                                                                  ============


                     See notes to financial statements.


  21


                        BANK INVESTMENT FUND-FUND ONE

                           STATEMENT OF OPERATIONS
                        Year Ended December 31, 2004



<s>                                                                  <c>         <c>
INVESTMENT INCOME:                                                               $1,656,310

EXPENSES:
  Compensation, payroll taxes and benefits-officers                  $46,428
  Compensation, payroll taxes and benefits-other                      52,354
  Occupancy                                                           49,300
  Professional fees                                                   26,800
  Distribution expenses                                               21,392
  Equipment and data processing                                       15,684
  Directors' fees                                                     10,400
  Insurance expense                                                    9,200
  Other bank fees                                                      6,800
  Postage and telephone                                                6,400
  Meetings and travel                                                  6,100
  Shareholder reports                                                  5,028
  Other expenses                                                       2,236
  Stationary and supplies                                              2,100
                                                                     -------
      TOTAL EXPENSES                                                                260,222
                                                                                 ----------
      INVESTMENT INCOME-NET                                                       1,396,088
                                                                                 ----------

REALIZED AND UNREALIZED LOSS ON
 INVESTMENTS:
  Net realized loss on investments                                                 (131,193)
  Change in net unrealized depreciation on investment securities                   (823,733)
                                                                                 ----------
      Net realized and unrealized loss on investments                              (954,926)
                                                                                 ----------

NET INCREASE IN NET ASSETS RESULTING FROM
 OPERATIONS                                                                      $  441,162
                                                                                 ==========


                     See notes to financial statements.


  22


                        BANK INVESTMENT FUND-FUND ONE

                     STATEMENT OF CHANGES IN NET ASSETS




                                                                Year Ended December 31,
                                                             ------------------------------
                                                                 2004             2003
                                                                 ----             ----

<s>                                                          <c>              <c>
INCREASE IN NET ASSETS FROM OPERATIONS:
  Investment income-net                                      $  1,396,088     $   4,178,783
  Net realized gain (loss) on investments                        (131,193)          121,729
  Unrealized depreciation-net                                    (823,733)       (1,786,666)
                                                             ------------     -------------

    Net increase in net assets resulting from operations          441,162         2,513,846

DIVIDENDS TO SHAREHOLDERS FROM:
  Investment income-net                                        (1,396,088)       (4,178,783)

TRANSACTIONS IN SHARES OF BENEFICIAL INTEREST-
 NET DECREASE                                                 (39,412,385)     (123,092,432)
                                                             ------------     -------------

    TOTAL DECREASE IN NET ASSETS                              (40,367,311)     (124,757,369)

NET ASSETS:
  Beginning of year                                            89,934,961       214,692,330
                                                             ------------     -------------

  End of year                                                $ 49,567,650     $  89,934,961
                                                             ============     =============


                     See notes to financial statements.


  23


                        BANK INVESTMENT FUND-FUND ONE

                          PORTFOLIO OF INVESTMENTS
                              December 31, 2004

Obligations of Federal Agencies-93.5%




                                  Par        Coupon      Maturity Date          Value
                                  ---        ------      -------------          -----

<s>                           <c>            <c>       <c>                   <c>
Federal Home Loan Bank        $ 4,000,000    2.04%         03/03/06          $ 3,953,502
                                4,000,000    2.125         03/17/06*           3,955,355
                                4,000,000    2.00          07/10/06*           3,930,412
                                4,000,000    2.00          07/14/06*           3,930,487
                                4,000,000    2.075         07/28/06            3,931,691
                                2,000,000    2.30          12/29/06            1,960,196
                                4,000,000    2.25          01/29/07            3,912,336
                                4,000,000    2.66          02/13/07            3,943,674
                                4,000,000    2.50          04/30/07            3,920,000
                              -----------                                    -----------
                              $34,000,000              (Cost $34,000,000)    $33,437,653
                              -----------                                    -----------

Federal Home Loan Mortgage
 Corporation                  $ 5,000,000    3.875%        02/15/05          $ 5,008,373
                                4,000,000    2.08          05/26/06*           3,942,544
                                4,000,000    2.15          06/02/06            3,945,328
                              -----------                                    -----------
                              $13,000,000              (Cost $12,999,517)    $12,896,245
                              -----------                                    -----------

Total Federal Agencies
 Obligations                                           (Cost $46,999,517)    $46,333,898
                                                                             -----------

Certificates of Deposit-2.2%



                                  Par        Coupon      Maturity Date          Value
                                  ---        ------      -------------          -----

<s>                           <c>            <c>       <c>                   <c>
NCB, FSB                      $ 1,000,000    2.15%         01/20/05          $ 1,000,000
NCB, FSB                          100,000    2.20          02/08/05              100,000
                              -----------                                    -----------
                              $ 1,100,000              (Cost $ 1,100,000)    $ 1,100,000
                              -----------                                    -----------

<FN>
- --------------------
*     May be subject to call by issuer prior to maturity date.
</FN>


                     See notes to financial statements.


  24


                        BANK INVESTMENT FUND-FUND ONE

                    PORTFOLIO OF INVESTMENTS (continued)
                              December 31, 2004

Repurchase Agreement-3.6%




                                  Par        Coupon      Maturity Date          Value
                                  ---        ------      -------------          -----

<s>                           <c>            <c>       <c>                   <c>
$1,810,000                    Repurchase Agreement dated December 31, 2004 with
                              Morgan Stanley Dean Witter, Inc. due January 3, 2005
                              with respect to $1,805,000 U.S. Treasury Note 6.50% due
                              May 15, 2005-maturity value $1,810,324.29 for an ef-
                              fective yield of 2.15%.

                                                       (Cost $ 1,810,000)    $ 1,810,000
                                                                             -----------
Total Investments-99.3%                                (Cost $49,909,517)    $49,243,898
                                                                             -----------
Other assets in excess of liabilities-0.7%                                       323,752
                                                                             -----------
Net assets-100%                                                              $49,567,650
                                                                             ===========


                     See notes to financial statements.


  25


                        BANK INVESTMENT FUND-FUND ONE

                        NOTES TO FINANCIAL STATEMENTS

NOTE 1. Organization:

      The Bank Investment Fund (the "Corporation") was organized effective
April 7, 1985 pursuant to a Special Act of the Commonwealth of
Massachusetts (Acts of 1984, Chapter 482, as amended,) under its chartered
name "Co-operative Bank Investment Fund" and does business under the name
"Bank Investment Fund." The Corporation is registered with the Securities
and Exchange Commission under the Investment Company Act of 1940, as
amended, as a diversified, open-end management investment company. The
Corporation invests and manages two mutual investment funds derived from
the voluntary subscriptions made by eligible investors.

      Fund One (the "Fund") is a no-load, diversified, open-end investment
fund. Fund shares are currently offered to the following eligible
investors: Massachusetts Co-operative Banks, Massachusetts Savings Banks,
Massachusetts Trust Companies, Federally Chartered Savings Banks and
Savings and Loan Associations with their principal place of business in
Massachusetts, The Co-operative Central Bank Reserve Fund, The Savings Bank
Life Insurance Company of Massachusetts, the National Cooperative Bank, and
directly or indirectly wholly-owned subsidiaries of such institutions.

      Because more than one fund will be operated by the Corporation,
operating expenses related directly to a single fund operation will be
charged directly to that fund. Common or indirect expenses will be
allocated among funds in proportion to the ratio of the net assets of each
fund to total net assets of the Corporation or on such other basis as the
Board of Directors of the Corporation may determine from time to time to be
fair and equitable.

NOTE 2. Significant Accounting Policies:

      The Fund's financial statements are prepared in accordance with
generally accepted accounting principles which require the use of
management estimates. The policies described below are followed
consistently by the Fund in the preparation of its financial statements.

Use of estimates:

      The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities, if any, at the date of the
financial statements and the reported amounts of increases and decreases in
net assets from operations during the reporting period. Actual results
could differ from those estimates.


  26


                        BANK INVESTMENT FUND-FUND ONE

                  NOTES TO FINANCIAL STATEMENTS (continued)

NOTE 2. Significant Accounting Policies (continued):

Investment security valuation:

      U.S. debt securities are normally valued on the basis of valuations
provided by market makers. Such prices are believed to reflect the fair
value of such securities and to take into account appropriate factors such
as institutional size trading in similar groups of securities, yield
quality, coupon rate, maturity, type of issue, and other market data.
Securities for which market quotations are not readily available will be
valued at fair value using methods determined in good faith by or at the
direction of the Board of Directors.

Accounting for investments:

      Security transactions are accounted for on the trade date (date the
order to buy or sell is executed). In computing net investment income prior
to January 1, 1997, the Fund did not amortize premiums or accrete discounts
on fixed income securities in the portfolio, except those original issue
discounts for which amortization is required for federal income tax
purposes. Since January 1, 1997, the Fund amortizes premiums or accretes
discounts on related fixed income securities, which change had an
immaterial effect on investment income. Premiums, if any, and discounts are
amortized or accreted on a straight line basis, which approximates the
income method. Additionally, with respect to market discount on bonds
issued after July 18, 1984, a portion of any capital gain realized upon
disposition may be recharacterized as taxable ordinary income in accordance
with the provisions of the 1984 Tax Reform Act. Realized gains and losses
on security transactions are determined on the identified cost method.

Repurchase agreements:

      It is the policy of the Fund to require the custodian bank to take
possession, to have legally segregated in the Federal Reserve Book Entry
System or to have segregated within the custodian bank's vault, all
securities held as collateral in support of repurchase agreement
investments. Additionally, procedures have been established by the Fund to
monitor, on a daily basis, the market value of each repurchase agreement's
underlying investments to ensure the existence of a proper level of
collateral.

Federal income taxes:

      The Corporation's policy is to comply with the requirements of the
Internal Revenue Code applicable to regulated investment companies and to
distribute substantially all of its taxable income to its shareholders.
Therefore, no federal income tax provision is required. The Fund realized a
tax basis loss of ($106,266) during 2004, resulting in a remaining capital
loss carryforward of ($128,714) at December 31, 2004. Such capital loss
carryforward will reduce the Fund's taxable income arising from future net
realized gain on investments, if any, to the extent permitted by the
Internal Revenue Code, and thus will reduce the amount of distributions to
shareholders which would otherwise be necessary to relieve the Fund of any
liability for federal income tax. Such capital loss carryforward will
expire on December 31, 2008 ($22,448) and December 31, 2012 ($106,266).


  27


                        BANK INVESTMENT FUND-FUND ONE

                  NOTES TO FINANCIAL STATEMENTS (continued)

NOTE 2. Significant Accounting Policies (continued):

Dividends to shareholders:

      The Fund distributes all of its net investment income on a daily
basis. Dividends are declared on each day that the Fund is open for
business. Investors receive dividends in additional shares unless they
elect to receive cash. Payment is made in additional shares at the net
asset value on the payable date or in cash, on a monthly basis.
Distributions of otherwise taxable realized net capital gains, if any, are
declared and paid once each year and are reinvested in additional shares at
net asset value or, at each shareholder's option, paid in cash.

Net asset value:

      The net asset value per share is determined daily by adding the
appraised value of all securities and all other assets, deducting
liabilities and dividing by the number of shares outstanding.

NOTE 3. Security Transactions:

      The cost of securities purchased and the proceeds from the sales of
securities, all of which were Obligations of U.S. Treasuries and Federal
Agencies and bank certificates of deposit, (excluding short-term
investments) aggregated $16,206,388 and $54,834,749, respectively for the
year ended December 31, 2004. As of December 31, 2004, unrealized
depreciation of investments was ($665,619); accumulated net realized loss
on investment transactions totaled ($17,209,575).

NOTE 4. Distribution Expenses:

      The Fund has adopted a Plan of Distribution (the "Plan"), pursuant to
rule 12b-1 under the Investment Company Act of 1940, to use the assets of
the Fund to finance certain activities relating to the distribution of its
shares to investors. The Plan authorizes the Fund to pay for the cost of
preparing, printing, and distributing offering circulars to prospective
investors, for certain other direct or indirect marketing expenses, direct
payments to sales personnel, and for the cost of implementing and operating
the Plan. Plan expenses may not exceed an amount computed at an annual rate
of .12 of 1% of the Fund's average daily net assets. The Fund paid or
accrued $21,392 (.03% of average net assets) pursuant to this Plan for the
year ended December 31, 2004.


  28


                        BANK INVESTMENT FUND-FUND ONE

                  NOTES TO FINANCIAL STATEMENTS (continued)

NOTE 5. Pension Plans:

      The Fund is a participating employer in the Co-operative Banks
Employees Retirement Association, and has, in effect, a Defined
Contribution Plan covering all eligible officers and employees. Under the
plan, contributions by employees are doubled by the Fund, up to a maximum
of 10% of each employee's salary. Effective January 1, 1989, the Fund also
participates in a Defined Benefit Plan, which covers all eligible
employees, and is funded currently. The Fund's contributions to these
multi-employer plans for the year ended December 31, 2004 was $15,777.

NOTE 6. Shares of Beneficial Interest:

      Chapter 482 of the Acts of 1984, as amended, of the Commonwealth of
Massachusetts permits the directors to issue an unlimited number of full
and fractional shares of beneficial interest (no par, non-voting, with a
stated value of $1,000 per share). As of December 31, 2004 capital paid-in
aggregate was $67,442,844.

      Transactions in shares of beneficial interest are summarized as
follows:




                                                Year Ended                       Year Ended
                                            December 31, 2004                December 31, 2003
                                       ----------------------------    ------------------------------
                                          Shares          Amount          Shares           Amount
                                          ------          ------          ------           ------

<s>                                    <c>             <c>             <c>              <c>
Sold                                    17,109.5805    $ 16,966,217      74,508.0791    $  74,259,582
Issued in reinvestment of dividends        659.0243         649,667       1,564.0312        1,557,657
                                       ------------    ------------    -------------    -------------
                                        17,768.6048      17,615,884      76,072.1103       75,817,239
Redeemed                                57,782.0128      57,028,269     200,027.2810      198,909,671
                                       ------------    ------------    -------------    -------------
Net decrease                           (40,013.4080)   $(39,412,385)   (123,955.1707)   $(123,092,432)
                                       ============    ============    =============    =============


NOTE 7. Transactions With Related Parties:

      The Incorporators of the Corporation are the Directors of The Co-
operative Central Bank, which is the statutory reserve bank and insurer of
deposits in excess of Federal deposit insurance limitations for
Massachusetts co-operative banks. The Board of Directors of the Corporation
is elected by the Incorporators.

      The Fund reimburses The Co-operative Bank and receives reimbursement
from the Bank Investment Fund-Liquidity Fund for its proportionate share of
expense items used in common. All fees and expenses for the Fund are
estimated and accrued daily. Actual operating expenses for the year ended
December 31, 2004 was .38% of average net assets. As reimbursement of
allocated expenses, operating expenses paid to The Central Bank for the
year ended December 31, 2004 was $63,300. The Fund accrued or received from
the Bank Investment Fund-Liquidity Fund for the year ended December 31,
2004 the amount of $173,900.


  29


     This sheet and the following sheet are perforated for your removal
          and use in the establishment or updating of your account.

                     CERTIFICATE OF CORPORATE RESOLUTION

      For Massachusetts Co-operative Banks, Massachusetts Savings Banks,
Massachusetts Trust Companies, Federally Chartered Savings Banks and
Savings and Loan Associations with their principal place of business in
Massachusetts, The Co-operative Central Bank Reserve Fund, The Savings Bank
Life Insurance Company of Massachusetts, the National Cooperative Bank and
directly or indirectly wholly-owned subsidiaries of such institutions only.
This form authorizes the individuals below to redeem shares by telephone or
exchange.

      The undersigned is Secretary or Clerk of _________________ and hereby
certifies that the following individuals:    (name of corporation)

                Name                          Title
                ----                          -----

___________________________________________________________________________

___________________________________________________________________________

___________________________________________________________________________

___________________________________________________________________________

___________________________________________________________________________

are duly authorized by corporate resolution or otherwise to act on behalf
of the eligible bank in connection with its ownership of shares in the Bank
Investment Fund, Fund One and in particular to give instructions for the
purchase, sale or exchange of any said shares and to execute any necessary
forms in connection therewith.

      The Bank Investment Fund will consider this authorization to be in
full force and in effect until otherwise notified in writing.

      IN WITNESS WHEREOF, the undersigned has executed this Certificate the
_______________ day of
___________________ 20__________.


___________________________________________________________________________
Secretary or Clerk


  30


                            BANK INVESTMENT FUND
                                  FUND ONE
                          ACCOUNT APPLICATION FORM

REGISTRATION. The account should be registered as follows:

                                                         DATE: ____________
NAME: _____________________________________________________________________
POST OFFICE BOX: __________________________________________________________
STREET ADDRESS: ___________________________________________________________
CITY/TOWN: ______________________________________ STATE: __________________
ZIP CODE: ____________________________ TELEPHONE NUMBER: __________________
TAX ID NUMBER _____________________________________________________________
FAX NUMBER:_____________________________ E-MAIL ADDRESS: __________________
INITIAL INVESTMENT: $____________________________________ (Minimum $50,000)

                           MONTHLY CASH DIVIDENDS

[ ]   Check if dividends are to be paid monthly in cash. Otherwise
      dividends will be AUTOMATICALLY REINVESTED in additional shares of
      the Fund.

                         TELEPHONE REDEMPTION ORDERS

      Redemption proceeds will be sent ONLY to the bank or trust company
listed below, for credit to the investor's account. The investor hereby
authorizes the BANK INVESTMENT FUND to honor telephone or written
instructions, without a signature guarantee, for redemption of Fund shares.
THE FUND and its Agents will not be liable for any loss, expense or cost
arising out of such transactions.

      Enclose a specimen copy of your check or deposit slip (marked VOID)
for the bank account listed below. To facilitate the wiring of your
redemption proceeds the indicated bank should be a commercial bank.

Name of Bank: _____________________________________________________________
Bank Account No.: _________________________________________________________
Bank Address: _____________________________________________________________
              street
              _______________________________________________ MA __________
              city                                                   zip
Name on Account: __________________________________________________________
Bank Routing/Transit No.: _________________________________________________

          AUTHORIZED PERSONS-TELEPHONE INVESTMENTS AND REDEMPTIONS

         Authorized person           Title              Initials
         -----------------           -----              --------

1. ________________________________________________________________________
2. ________________________________________________________________________
3. ________________________________________________________________________
4. ________________________________________________________________________
5. ________________________________________________________________________


  31


                            CORPORATE RESOLUTIONS

      We have enclosed with this application form the necessary corporate
resolutions to authorize corporate officers to make wire or cash payment
transfers to the Bank Investment Fund and to purchase, sell or exchange
shares of beneficial ownership in the Bank Investment Fund, Fund One.

                         SIGNATURE AND CERTIFICATION

      We have received and read the Offering Circular, and agree to its
terms and conditions by signing below. By the execution of this
Application, the undersigned represent and warrant that they are duly
authorized to sign this Application and to purchase or redeem shares of the
Fund on behalf of the investor.

      The undersigned hereby certify under penalty of perjury that the
above Taxpayer Identification Number is correct and that the investor is
not subject to backup withholding.

      We further certify and agree that the certifications, authorizations
and appointments in this document will continue until the Bank Investment
Fund receives actual written notice of any change thereof.

Signature _____________________________ Title _____________________________

Signature _____________________________ Title _____________________________

Two signatures are required, one of which should be the Secretary or Clerk
of the corporation.

                             SIGNATURE GUARANTEE

      In order to facilitate telephone redemptions, you must have your
signature(s) on this application guaranteed by a commercial bank or stock
exchange member firm.

___________________________________________________________________________
Name of Bank or Investment Dealer

___________________________________________________________________________
By (signature of authorized person)

___________________________________________________________________________
Title (authorized person)


  32


                            FINANCIAL STATEMENTS

      As required by applicable statutes, semi-annual financial statements
are furnished to the shareholder, the Commissioner of Banks and the
Securities and Exchange Commission.

                           ADDITIONAL INFORMATION

      The Bank Investment Fund (the "Corporation") has filed with the
Securities and Exchange Commission in Washington, D.C., under the chartered
name the "Co-operative Bank Investment Fund" a registration statement on
Form N-1A (together with all amendments and exhibits thereto, hereinafter
referred to as the "Registration Statement") under the Investment Company
Act of 1940. This Offering Circular does not contain all of the information
in the Registration Statement. The Corporation has also filed a complete
schedule of portfolio holdings Form N-Q with the Securities and Exchange
Commission. The Registration Statement may be reviewed and copied at the
Public Reference Room of the Securities and Exchange Commission; or:

      By Phone:   1-800-Sec-0330
      By mail:    Public Reference Section
                  Securities and Exchange Commission
                  Washington, D.C. 20549-6009
                  (duplicating fee required)
      On the Internet: www.sec.gov
      (Investment Company Act File No. 811-4421)

      The Corporation will provide, without charge to any person to whom
this Offering Circular is delivered on the written or oral request of any
such person, a copy of the Registration Statement and the additional
information contained therein and documents relating to certain exemptions
from the Investment Company Act of 1940 (see ORGANIZATION). Written
requests should be directed to the Bank Investment Fund, 75 Park Plaza,
Boston, MA 02116-3934. Telephone requests may be directed collect to 617-
695-0415.

                     ==================================
                            BANK INVESTMENT FUND

                                  FUND ONE


                                   [LOGO]


                                75 Park Plaza
                            Boston, MA 02116-3934
                                617-695-0415
                       Web: www.bankinvestmentfund.com
                     E-mail: bif@bankinvestmentfund.com
                     ==================================








BANK INVESTMENT FUND  LIQUIDITY FUND
(Series 2)

ANNUAL REPORT
December 31, 2004



OFFERING CIRCULAR
- -----------------

[LOGO]                      Bank Investment Fund
                               Liquidity Fund
                                75 Park Plaza
                      Boston, Massachusetts 02116-3934
                                617-695-0415

                            --------------------

      The Bank Investment Fund (the "Corporation") is an investment company
which currently invests and manages two mutual funds derived from voluntary
subscriptions made by eligible investors.

      Liquidity Fund (the "Fund") is a no-load, diversified, open-end money
market investment fund whose objective is maximum current income consistent
with liquidity and the preservation of capital. The Fund is designed solely
for use by eligible investors as an economical and convenient way to make
liquid investments. Fund shares are currently offered to the following
eligible investors: Massachusetts Co-operative Banks, Massachusetts Savings
Banks, Massachusetts Trust Companies, Federally Chartered Savings Banks and
Savings and Loan Associations with their principal place of business in
Massachusetts, The Co-operative Central Bank Reserve Fund, The Savings Bank
Life Insurance Company of Massachusetts and the National Cooperative Bank
(sometimes hereinafter called "Banks").

      Investors should read this Offering Circular and retain it for future
reference.

      THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
SECURITIES AND EXCHANGE COMMISSION, NOR HAS THE COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS OFFERING CIRCULAR. ANY REPRESENTATION TO THE
CONTRARY IS A CRIMINAL OFFENSE.

      THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
COMMISSIONER OF BANKS OF THE COMMONWEALTH OF MASSACHUSETTS (the
"Commissioner of Banks"), NOR HAS THE COMMISSIONER OF BANKS PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS OFFERING CIRCULAR. ANY REPRESENTATION TO THE
CONTRARY IS UNLAWFUL.

      THE SHARES BEING OFFERED ARE NOT SAVINGS ACCOUNTS OR DEPOSITS AND ARE
NOT INSURED BY ANY GOVERNMENT AGENCY. AN INVESTMENT IN THE FUND IS NOT
GUARANTEED OR INSURED BY THE U.S. GOVERNMENT AND THERE IS NO ASSURANCE THAT
THE FUND WILL BE ABLE TO MAINTAIN A STABLE NET ASSET VALUE. SUCH SHARES ARE
BEING OFFERED PURSUANT TO AN EXEMPTION FROM THE SECURITIES ACT OF 1933 AND
APPLICABLE STATE SECURITIES ACTS AND HAVE NOT BEEN REGISTERED OR QUALIFIED
UNDER SUCH ACTS.

                            --------------------

           The date of this Offering Circular is February 28, 2005





                              TABLE OF CONTENTS

                                                                       Page
                                                                       ----

Risk Return Summary                                                      1
  Investment Objectives                                                  1
  Principal Investment Strategies                                        1
  Principal Investment Risk                                              2
  Bar Chart and 7 Day Yield                                              2
  Fee Table                                                              3
Investment Objectives and Restrictions                                   4
Statutory Limitation on Investments                                      5
Dividends                                                                6
Net Asset Value                                                          6
Investors' Accounts                                                      6
Investors' Privacy                                                       6
Taxes                                                                    6
Auditors and Legal                                                       7
Capital Gains or Losses                                                  7
How Shares of Fund are Purchased                                         7
How Shares of Fund are Redeemed                                          8
Transfer Restrictions                                                    8
Organization                                                             9
Description of Fund Shares                                              10
Supervision and Regulation                                              10
Investment Advisor                                                      10
Transfer Agent                                                          10
Operating and Distribution Expenses                                     11
Exchange Privilege                                                      11
Custodian                                                               12
Management of the Fund                                                  12
Financial Highlights                                                    16
Independent Auditor's Report                                            18
Financial Statements                                                    19
Investments                                                             22
Notes to Financial Statements                                           24
Account Application Forms                                               29
Additional Information                                             Back Cover





                            BANK INVESTMENT FUND
                               LIQUIDITY FUND
                                75 Park Plaza
                      Boston, Massachusetts 02116-3934

                             RISK RETURN SUMMARY

Investment Objectives

      The investment objectives of Liquidity Fund is to maximize current
income consistent with liquidity of assets and safety of principal.

      The Fund was formed to provide participating banks with a highly
liquid, diversified, high-quality investment vehicle designed to assist
liquidity management, while seeking preservation of capital.

Principal Investment Strategies

      In addition to maintaining cash on hand and in checking accounts due
from banks, the Fund invests principally in short-term marketable debt
securities issued by the United States Government or by agencies of the
United States, bank money instruments, repurchase agreements, short-term
corporate debt instruments, commercial paper, and reverse repurchase
agreements.

      The categories of those securities include, but may not be limited to
a) certificates of deposit due from any trust company, national banking
association or banking company, or any federally insured savings banks, co-
operative bank or savings & loan association, b) Federal funds sold, c)
bonds and other direct obligations of the United States which are
unconditionally guaranteed as to principal and interest by the United
States, and issues of U.S. Government agencies and instrumentalities, d)
repurchase agreements, e) commercial paper which, when purchased, is rated
A-1 by Standard & Poor's Corporation ("Standard & Poor's") and/or Prime-1
by Moody's Investors Service, Inc. ("Moody's") or, if not rated, has been
determined to be of comparable high quality under procedures adopted and
approved by the Fund's Board of Directors. Commercial paper obligations may
include variable amount of master demand notes; short-term obligations of
corporations; f) Second Tier securities to the extent permissible by Rule
2a-7 of the Investment Company Act of 1940 (see investment restrictions)
including commercial paper which when purchased is rated A-2 by Standard &
Poor's or Prime-2 by Moody's or if not rated, has been determined to be of
comparable quality under procedures adopted and approved by the Fund's
Board of Directors, and g) certain money market instruments which, when
purchased, are rated A-1 by Standard and Poor's Corporation
and/or Prime-1 by Moody's Investor Services or, if not rated, has been
determined to be of comparable high quality under procedures adopted and
approved by the Fund's Board of Directors.

      All the above investments must have original maturities or remaining
maturities of 397 days or less. In addition, the Fund will maintain a
dollar weighted average maturity of 90 days or less.

      The Fund may invest more than 25% of its assets in the banking
industry through certificates of deposit and Federal funds sold in the
ordinary course of its business. However, the Fund will not invest more
than 35% of the Fund's assets in that industry. The Fund will not
concentrate it's investments in any other industry other than banking.

      The Fund may enter into reverse repurchase agreements to meet short-
term liquidity needs of the Fund. These agreements may not be in excess of
three business days.


  1


Principal Investment Risk

      The main risk factor in the Fund's performance is interest rates, the
fluctuation of which will cause the income of the Fund to correspondently
change. The average portfolio duration may cause a delayed effect before
the market interest rate change is fully reflected in the Fund's income
performance.

      An additional risk factor in the Fund's performance, to a limited
extent, is credit risk. Credit risk is the chance that the issuer of the
security could have its credit rating downgraded or be unable to pay
interest and principal in a timely manner. While the credit quality of the
Fund's investment portfolio is extremely high based on the principal
investment strategies discussed above, the Fund is subject to some degree
of credit risk.

      While the Fund seeks to maintain, it does not guaranty a stable net
asset value of $1,000 per share. In addition, the shares being offered are
not savings accounts or deposits and are not insured or guaranteed by the
Federal Deposit Insurance Corporation, U.S. Government or its agencies.

Bar Chart and 7 Day Yield

      The bar chart shows the changes of the Fund's total return
performance from year to year over a ten year period ended December 31,
2004.

                     BANK INVESTMENT FUND-LIQUIDITY FUND
                             ANNUAL TOTAL RETURN




            1995    1996    1997    1998    1999    2000    2001    2002    2003    2004
            ----    ----    ----    ----    ----    ----    ----    ----    ----    ----

<s>         <c>     <c>     <c>     <c>     <c>     <c>     <c>     <c>     <c>     <c>
Percent     5.86    5.38    5.52    5.44    5.00    6.31    4.17    1.85    1.09     1.13

<FN>
- --------------------
During the ten-year period shown in the bar chart, the highest quarterly
return was 6.7% (for the quarter ended September 30, 2000) and the lowest
quarterly return was .88% (for the quarter ended March 31, 2004).
</FN>



  2


      The table shows how the Fund's average annual return for one, five
and ten years for the period ended December 31, 2004 compared to the 3
month U.S. Treasury Bill.




                                             One      Five     Ten
                                             Year     Year     Year
                                             ----     ----     ----

      <s>                                    <c>      <c>      <c>
      Bank Investment Fund-Liquidity Fund    1.13%    2.89%    4.16%
      U.S. Treasury Bill-3 month             1.44%    2.69%    3.97%

<FN>
- --------------------
Total returns are based on past results and are not a prediction of future
performance.
</FN>


      The annualized average net yield of the seven-day period ended
December 31, 2004 was 1.86%. Yield is calculated based on the last 7 days
ending on the date of the most recent statement of Assets and Liabilities,
(as presented elsewhere within). The Fund's yield fluctuates as a result of
numerous factors. Therefore, the yield stated here is not necessarily
representative of the Fund's future yield. The most recent daily yield,
together with the 7 day yield for the most recent calendar month end may be
obtained by directly calling the rate line 617-695-0419 or by calling our
main office telephone number 617-695-0415 collect.

Fee Table

      This table describes the fees and expenses that you may pay if you
buy and hold shares of the Fund.




                                                                  Year Ended
                                                              December 31, 2004
                                                              -----------------

      <s>                                             <c>            <c>
      Shareholder Transaction Expenses*                                0%
      Annual Fund Operating Expenses
       (as a percentage of average net assets)
        Management Fees                                                0%
        12b-1 Fees                                                   .01%
        Other Expenses
          Compensation, Payroll, Taxes, & Benefits    .06%
          Occupancy                                   .04%
          Remainder                                   .06%
                                                      ---
                                                                     .16%
                                                                     ---
      TOTAL FUND OPERATING EXPENSES                                  .17%
                                                                     ===

<FN>
- --------------------
*     The Fund charges no sales load or deferred sales load on any
      purchase, reinvested dividend, exchange, or redemption transactions.
</FN>



  3


Example

      You would pay the following expenses on a $10,000 investment,
assuming (1) 5% annual return and (2) with or without redemption at the end
of each time period:




                           1 Year    3 Years    5 Years    10 Years
                           ------    -------    -------    --------

      <s>                  <c>       <c>        <c>        <c>
      December 31, 2004    $17.40    $54.90     $96.34     $219.98


      The purpose of the foregoing table, which is based upon the Fund's
fiscal year ended December 31, 2004, is to assist you in understanding the
various costs and expenses that an investor in the Fund will bear directly
or indirectly. The Example provided is intended to show the dollar amount
of expenses that would be incurred over the indicated periods on a
hypothetical $10,000 investment in the Fund, assuming a 5% annual return
and assuming that the Fund's expenses continue at the rates shown in the
table. However, the actual return on an investment in the Fund may be
greater or less than 5%. Furthermore, the Example should not be considered
a representation of past or future expenses; actual expenses may be greater
or less than those shown.

                   INVESTMENT OBJECTIVES AND RESTRICTIONS

      The investment objective of the Liquidity Fund is to maximize current
income consistent with liquidity of assets and safety of principal.

      The Fund was formed to provide participating banks with a highly
liquid, diversified high-quality investment vehicle designed to assist
liquidity management while seeking preservation of capital. The Fund
pursues this objective by investing principally in short-term marketable
debt securities issued by the United States Government or by agencies of
the United States, bank money instruments, short-term corporate debt
instruments including commercial paper, repurchase agreements and reverse
repurchase agreements.

      Shares of the Bank Investment Fund are eligible investments to be
included in legal liquidity under Massachusetts General Laws, Chapter 170,
Section 22.

      The Board of Directors of the Corporation has investment discretion
with regard to Liquidity Fund assets.

      No more than 5% of the Fund's assets at the time of purchase may be
invested in the securities of any one issuer except for direct obligations
of the United States or obligations guaranteed by the United States, and
other obligations issued under federal programs or by certain federal
agencies.

      In accordance with amendments, effective June 1, 1991 to Rule 2a-7 of
the Investment Company Acts of 1940, no more than 5% of the Fund's assets,
in the aggregate, may be invested in "second tier" securities, with no more
than 1% of the Fund's assets or one million dollars, whichever is greater,
invested in the second tier securities of any one issuer.

      The Fund is further restricted through the investment policy
maintained by the Corporation's Officers and Directors. The investment
policy restricts the Fund from a) purchasing any securities other than
money market


  4


instruments and other securities described under "Principal Investment
Strategies", and b) investing more than 25% of its total assets in the
securities of a particular industry other than U.S. Government securities,
Government Agency securities or bank money instruments.

               STATUTORY LIMITATION ON INVESTMENTS IN THE FUND
                           BY PARTICIPATING BANKS

      Under Massachusetts General Laws, Chapter 167F, Section 3(2) as
amended, a participating or eligible savings bank or co-operative bank may
invest an amount in excess of 100% of its capital and surplus in any
distinct non-equity investment fund of the Corporation except to the extent
that the Commissioner of Banks for the Commonwealth of Massachusetts may by
regulation set limits and conditions. The participating bank will be
responsible for monitoring and compliance with this limitation.

      Under Massachusetts General Laws, Acts of 1932, Chapter 45, Section
7, as amended, The Co-operative Central Bank Reserve Fund may not invest or
hold at any one time more than 20% of its assets with the Corporation.

      Investments in the Fund are affected by Section 303 of the FDIC
Improvement Act of 1991 which limits investments by FDIC-insured state
banks (including Massachusetts co-operative banks, savings banks and trust
companies) in common or preferred stock or shares of mutual funds to the
extent that such investments are permissible for national banks.
Permissible national bank investments, as described in section 24(7) of the
National Bank Act and 12 C.F.R. Part 1, include mutual funds which invest
in securities and financial instruments eligible for direct investment by
national banks. The underlying investment portfolio composition of the
Liquidity Fund is comprised of assets (Federal agency obligations,
certificates of deposit, commercial paper, short-term corporate bonds and
notes, and Federal funds sold) that a national bank may purchase and sell
for its own account under 12 C.F.R. Part 1. An FDIC-insured state bank may
hold these investments directly or indirectly (i.e. pass-through mutual
fund investment) that are permissible for national banks without being
subject to limit restrictions for national banks. Therefore, Liquidity Fund
balances may be excluded (on a pass-through basis with shares of beneficial
interest) from an FDIC-insured state-chartered bank's (such as a
Massachusetts savings bank or co-operative bank) computation of equity
securities in measuring compliance with 12 C.F.R. 362 limits (usually 100%
of Tier 1 capital).

      Federally chartered savings banks and savings and loan associations
(with their principal place of business in Massachusetts) may invest in an
open-end mutual fund, such as the Liquidity Fund, which invests in
securities and financial instruments in which such institutions may invest
directly (e.g., Federal agency obligations and high quality commercial
paper and corporate debt). For purposes of determining compliance with
quantitative investment limitations under the Home Owners Loan Act
("HOLA"), an investing bank's or association's proportionate share of a
mutual fund's individual investments will, under 12 C.F.R.,  560.32, be
aggregated with such investments held directly by the bank or association.
Apart from this requirement, a bank or association may invest, without
prior notice to the Office of Thrift Supervision, an amount up to 15% of
its total capital in any one mutual fund or up to 50% of total capital in
all such pass-through investment vehicles. Investments in excess of the 15%
and 50% limits may only be made when thirty days' advance notice has been
provided to the Office of Thrift Supervision.


  5


      Certain federally chartered savings banks which converted from a
Massachusetts savings bank charter may, under certain grandfather
provisions of HOLA, retain broader investment authority than that described
in the preceding paragraph. For example, section 5(i) of HOLA grandfathers
state authorized investment powers of certain Federal savings banks in
existence as of the date of enactment of Federal statutes (e.g., the
Financial Institution Reform, Recovery and Enforcement Act of 1989) which
may have otherwise limited such investments.

                                  DIVIDENDS

      The Fund distributes all of its net income on a daily basis.
Dividends are declared on each day that the Fund is open for business.
Investors receive dividends in additional shares unless they elect to
receive cash. Payment is made in additional shares at the net asset value
on the payable date or in cash, on a monthly basis.

      Investors wishing to change the method of receiving dividends must
notify the Fund in writing at least one week before payment is to be made.
Net income for dividend purposes consists of interest accrued and discount
earned, less amortization of any premium and accrued expenses, plus or
minus all realized short-term gains or losses, if any.

                               NET ASSET VALUE

      The Fund's net asset value per share is determined by dividing the
value of all investment securities and all other assets, less liabilities,
by the number of shares outstanding. The Fund's investment securities are
valued based on their amortized cost, which does not take into account
unrealized appreciation or depreciation. The Corporation's Board of
Directors has established procedures reasonably designed to stabilize the
net asset value per share at $1,000.00.

                             INVESTORS' ACCOUNTS

      The Fund maintains an account for each investor in full and
fractional shares. All purchase and sale transactions are confirmed to the
investor. Statements of account showing all transactions for the month,
including dividends paid, are sent to participating banks on a monthly
basis. In addition, statements of accounts showing all transactions for the
calendar year, including dividends paid, are sent to participating banks on
annual basis.

                             INVESTORS' PRIVACY

      Protecting the privacy and confidentiality of investor's account
information is important to the Fund. We value your business and the trust
you placed with us. The Fund does not share any non-public information
concerning our investor banks with any other party; except as necessary, to
process transactions or service accounts. In addition, we maintain physical
and electronic control procedures to safeguard our business records
relative to investor accounts.

                                    TAXES

      The Fund has qualified as a regulated investment company under the
Internal Revenue Code and will not be liable for federal income taxes to
the extent its earnings are distributed. Dividends derived from interest,
together with distributions of any short-term capital gains, are taxable as
ordinary income, whether or not reinvested. Dividends of the Fund do not
qualify for the dividends received exclusion for corporations.


  6


      In 2004, the Fund incurred a federal income tax liability of $53,854
on $181,035 of undistributed income resulting from the non deductibility of
$181,035 in security losses on portfolio repositioning. The resulting loss
carry forward of $181,035 will expire on December 31, 2012. A corporate
officer voluntarily contributed $53,854 to the Fund in order for the Fund
to pay this federal income tax expense without either reducing the per
share distribution for December 2004 or reducing the per share net asset
value below $1,000.

      A statement setting forth the federal income tax status of all
distributions made during each calendar year is sent to each shareholder
promptly after the end of such year.

                             AUDITORS AND LEGAL

      Parent, McLaughlin and Nangle, Certified Public Accountants, Inc.,
are the auditors of the Fund. The law firm of Steptoe & Johnson has passed
upon certain legal matters of the Fund in connection with the shares
offered by this offering circular.

                           CAPITAL GAINS OR LOSSES

      The Fund does not expect to experience long-term capital gains or
losses due to the short-term nature of the portfolio, and therefore the
Fund does not expect to pay capital gain dividends. The Fund recorded
short-term capital losses of $181,035 in connection with its repositioning
of the portfolio in November 2004.

                  HOW THE SHARES OF THE FUND ARE PURCHASED-
                       TELEPHONE INVESTMENT PROCEDURE

      Shares of the Fund are offered for sale on days on which the New York
Stock Exchange is open for business. The Fund and its custodian bank
observe the following holidays during the calendar year: New Year's Day,
Martin Luther King Day, President's Day, Memorial Day, Independence Day,
Labor Day, Columbus Day, Veteran's Day, Thanksgiving Day and Christmas Day.
There is no sales charge. The minimum initial investment is $50,000.
Additional investments may be made in any amount in excess of the minimum.

Bank Wire Transfers

      Call your correspondent bank and speak to your account officer. Tell
him that you want to transfer funds to State Street Bank and Trust Company.
Instruct him to wire transfer the money before 2:00 P.M., Eastern Standard
Time, to:

            State Street Bank and Trust Company
            Boston, Massachusetts
            Routing number: 0110-0002-8
            For account of the Bank Investment Fund, Liquidity Fund
            Account number: 9006-884-2

Internal Money Transfers

      If your correspondent bank account is with the State Street Bank and
Trust Company, contact your account officer and instruct him to transfer
funds from your account to the account of the Bank Investment Fund,
Liquidity Fund, Account number: 9006-884-2.


  7


      AFTER INSTRUCTING YOUR BANK TO TRANSFER FUNDS, PLEASE CALL THE FUND
AND TELL US THE AMOUNT YOU TRANSFERRED AND THE NAME OF THE BANK SENDING THE
TRANSFER. YOUR BANK MAY CHARGE A FEE FOR SUCH SERVICES. REMEMBER, IT IS
IMPORTANT TO DO THIS BEFORE 2:00 P.M. EASTERN STANDARD TIME.

      The securities market, in which the Fund buys and sells securities,
usually requires immediate settlement in Federal funds for all security
transactions; therefore, payment for the purchase of Fund shares must be
made by Federal funds or bank wire, which can be converted immediately into
Federal funds. Orders received prior to 2:00 P.M., Eastern Standard Time,
will be invested in shares of the Fund at the next determined net asset
value.

                    HOW SHARES OF THE FUND ARE REDEEMED-
                       TELEPHONE REDEMPTION PROCEDURE

      An investor may withdraw all or any portion of his investment by
redeeming shares on any day that the Fund is open for business at the next
determined net asset value. The proceeds of redemptions will be wired
directly to the investor's bank account within one business day.

      The right of redemption can be suspended and the payment of the
redemption proceeds deferred during any period in which a) the New York
Stock Exchange is closed or trading on such Exchange is restricted or b)
the Securities and Exchange Commission deems an emergency to exist, or
during any other period permitted by order of the Commission for the
protection of investors.

Bank Wire Transfers

      Call the Fund by 2:00 P.M. Eastern Standard Time to redeem shares
that day (Trade Date), for payment the following day (Settlement Date).
When the amount to be redeemed is at least $5,000.00, the Fund will
automatically wire transfer the amount to your correspondent bank account
at settlement. The Fund will make payment by check when the amounts
redeemed are less than $5,000.00.

Internal Money Transfers

      If your bank's account is with the State Street Bank and Trust
Company, contact the Fund by 2:00 P.M. Eastern Standard Time for redemption
of shares that day (Trade Date) for payment on the following day
(Settlement Date). The Fund will transfer the amount from its account to
your account at State Street Bank and Trust Company at settlement.

                            TRANSFER RESTRICTIONS

      Fund shares may not be transferred by banks holding such shares to
any persons other than an eligible bank (except that the shares may be
pledged to such other persons or they may be transferred to the Central
Bank). If the Fund shares are acquired by any other persons by operation of
law or by foreclosure upon the pledge of such shares (or through transfer,
in the case of the Central Bank), the Corporation must offer to repurchase
the shares from such person at net asset value of the shares. If such offer
is refused, no dividend may be paid by the Corporation or Fund on such
shares, and the redemption price which the holder of such shares may obtain
in any subsequent repurchase of those shares by the Corporation or Fund is
limited to the net asset value of the shares on the date of the
Corporation's offer.


  8


      In the event of any transfer, it is extremely important to notify the
Corporation immediately of any purchase, sale or transfer of Fund shares
not made through the Corporation or its transfer agent. Immediate
notification should be furnished to the Corporation by telephone, with
written notification as a follow-up thereto. Prompt notification is
essential to avoid any delay in redemption offer and loss of earnings.
Please remember that a statutory restriction exists on the Corporation and
it would be unable to pay a dividend to an ineligible holder after
expiration of the 30-day repurchase period which is statutorily available
following such transfer.

                                ORGANIZATION

      The Corporation was organized effective April 7, 1985 pursuant to a
Special Act of the Commonwealth [Acts of 1984, Chapter 482 as amended] of
Massachusetts under its chartered name "Co-operative Bank Investment Fund"
and does business under the name "Bank Investment Fund." The Special Act
indicates that the purpose of the Corporation is to hold, invest, reinvest
and manage one or more mutual investment funds, which shall include all
property of the Corporation, to be derived from voluntary subscription
thereto by the Banks.

      The Liquidity Fund commenced operations on October 12, 1988.

      The Corporation is an open-end diversified management investment
company authorized to invest its assets in certain real estate mortgages,
and a variety of other investments, including direct obligations of the
United States, obligations guaranteed by the United States, obligations
guaranteed by the Federal National Mortgage Association, bonds and other
evidences of indebtedness of corporations, shares of common or preferred
stock registered on a national securities exchange or for which quotations
are available through the National Quotation Bureau, Inc. or a comparable
service, or through a national securities market established in conformance
with Section 11A of the Securities Act of 1934, and other debt and equity
securities. The Liquidity Fund will only invest in those securities
described under "Principal Investments Strategies" and "Investment
Objectives and Restrictions" elsewhere herein.

      The business of the Corporation is conducted by a Board of Directors
elected by the Corporation's Incorporators and the Directors have
investment discretion relative to Corporation assets. The Incorporators of
the Corporation are the Directors of The Co-operative Central Bank, which
is the statutory reserve bank and insurer of deposits in excess of Federal
deposit insurance limitations for Massachusetts co-operative banks.

      The Corporation operates pursuant to an exemption from the sections
of the Investment Company Act of 1940 which deal with a) voting rights of
security holders and b) the manner of sale of redeemable securities.

      Only Massachusetts Co-operative Banks, Massachusetts Savings Banks,
Massachusetts Trust Companies, Federally Chartered Savings Banks and
Savings and Loan Associations with their principal place of business in
Massachusetts, The Co-operative Central Bank Reserve Fund, The Savings Bank
Life Insurance Company of Massachusetts and the National Cooperative Bank
are currently offered shares in the Fund. Such investors may purchase
shares of beneficial interest, which do not entitle the shareholders
thereof to voting rights of any nature, including investment policy
matters.


  9


                         DESCRIPTION OF FUND SHARES

      The Corporation has no capital stock. Beneficial ownership in each of
the Corporation's funds is represented by shares of beneficial ownership in
such fund, as recorded in book entry form. Each share of beneficial
interest in each fund is equal in every respect to every other share of
that fund. As the Directors of the Corporation establish distinct
investment funds, shares will be issued in distinct classes and each share
within each class will be equal in every respect to every other share of
that class.

      The shares of beneficial ownership are no par, non-voting, with a
stated value of $1,000, issued in book entry form only. Investment and
redemption of shares is effected at the net asset value as described
elsewhere herein. Shares are recorded in whole and/or fractional shares, as
applicable. Physical certificates are not issued. Monthly statements are
furnished to reflect share balance and activity.

      With regard to the absence of voting rights, management believes that
eligible investors are adequately protected because of a) regulation by the
Commissioner of Banks, b) the redeemable nature of the shares, c)
representation of co-operative bank investors in the election of Directors
of the Central Bank, who as Incorporators elect the Corporation's
Directors, and d) representation of savings bank investors by an advisor at
such corporate meetings of the Incorporators.

                         SUPERVISION AND REGULATION

      As provided by Massachusetts statute [Chapter 482, Acts of 1984 as
amended] the Corporation is subject to the supervision of the Commissioner
of Banks of the Commonwealth of Massachusetts. Periodic reporting to the
Commissioner of Banks is also required by the same statute. The Corporation
is registered as an open-end diversified management investment company
under the Investment Company Act of 1940, as amended, and is subject to
reporting requirements thereunder.

                             INVESTMENT ADVISOR

      The Corporation presently does not employ the services of any
investment advisory or management services company. Investment decisions
for the Fund are made by authorized officers of the Corporation, subject to
approval or ratification by its Board of Directors. The Corporation
reserves the right at any time in the future to appoint an investment
advisor at any reasonable and customary fee as may be agreed when, in the
opinion of the Corporation Directors, the use of such advisory or
management services would improve Fund performance.

                               TRANSFER AGENT

      The Corporation maintains the records for the investment, redemption,
and/or transfer of Fund shares. The Corporation reserves its right at any
time in the future to appoint a separate transfer agent at any reasonable
and customary fee as may be agreed when, in the opinion of the Corporation
Directors, the use of such transfer service is necessary. The limited
number of shareholders and nature of Fund operation does not, at this time,
justify the use of a separate agent and would only be an extra or
unnecessary expense.


  10


                     OPERATING AND DISTRIBUTION EXPENSES

      Normal expenses which may be borne by the Fund include, but are not
limited to: Director fees, salaries and wages, payroll taxes, employee
benefits, taxes, corporate fees, occupancy, furniture and equipment, data
processing, legal, auditing and accounting, telephone and postage,
custodial and other bank fees, preparation, printing and distribution of
reports, insurance, membership fees, organization, and other miscellaneous
expenses.

      The Corporation has adopted a plan of distribution pursuant to Rule
12b-1 of the Investment Company Act of 1940 (the "Plan") providing that the
Fund will pay certain expenses incurred by the Corporation which may be
considered to be primarily intended to result in the sale of shares in the
Fund. The expenses which may be incurred pursuant to the Plan include,
without limitation, those for the preparation, printing and distribution of
written materials for other than existing investors, preparation and
distribution of advertising material and sales literature, direct payments
to sales personnel, and other similar activities. The maximum expenditures
which may be made pursuant to the Plan in any year is .12 of 1% of the
average daily net asset value of the Corporation for such year. The Board
of Directors of the Corporation has concluded that there is a reasonable
likelihood that the Plan will benefit the Fund and its shareholders.

      Expenditures of $33,559 (.01% of average net assets) pursuant to the
12b-1 plan were incurred in and for the year ended December 31, 2004:
$1,939 for advertising in trade journals and similar publications; $5,065
for printing and mailing of offering circulars; $36,240 for sales related
compensation, payroll taxes and benefits; $9,963 for sponsorship of annual
subscriptions and other promotional materials; and ($19,648) for other plan
expenses.

      Because more than one fund will be operated by the Corporation,
operating expenses and expenses incurred pursuant to the Plan related
directly to a single fund operation will be charged directly to that fund.
Common or indirect expenses will be allocated among funds in accordance
with the annual budget as determined by the Board of Directors of the
Corporation to be fair and equitable or on such other basis as the Board of
Directors of the Corporation may determine from time to time to be fair and
equitable.

      The Fund accrued or paid the Bank Investment Fund-Fund One $173,900
for the year ended December 31, 2004 as a net reimbursement for the
proportionate share of expense items used in common by both funds. All fees
and expenses for the Fund are estimated and accrued daily. Actual operating
expenses for the year ended December 31, 2004 were .17% of average net
assets.

      In 2004, the Fund incurred a federal income tax liability of $53,854
on $181,035 of undistributed income resulting from the non deductibility of
$181,035 in security losses on portfolio repositioning. A corporate officer
voluntarily contributed $53,854 to the Fund in order for the Fund to pay
this federal income tax expense without either reducing the per share
distribution for December 2004 or reducing the per share net asset value
below $1,000.

                             EXCHANGE PRIVILEGE

      Shares of the Fund may be exchanged for shares of another fund of the
Corporation on the basis of the respective net asset value of the shares
involved.


  11


                                  CUSTODIAN

      The Corporation is required by statute to at all times employ a
national banking association located in the Commonwealth of Massachusetts,
or a Massachusetts state-chartered bank authorized to exercise trust
powers, as the Corporation's or Fund's custodian, to hold the securities
owned by the Corporation and any monies delivered by the Corporation's or
Fund's shareholders or due to the Corporation or Fund. Purchase and sale
transactions are effected through or by the custodian bank upon the
instructions of the Corporation.

      The State Street Bank and Trust Company, 225 Franklin Street, Boston,
MA 02110, serves as custodian of the Fund's cash and investments, other
than cash and Federal funds sold. Investments held under custody include
certificates of deposit. The Fund also maintains cash and Federal fund
balances with a number of qualified national banks or Massachusetts state
chartered banks. The banks utilized have been determined by the officers
and directors of the Fund to have been qualified to be custodian banks
themselves. State Street Bank and Trust Company, the Fund's custodian, and
other qualified banks, as discussed above, may be used by the Fund for the
placement of short-term, usually overnight, funds in Federal funds sold.

                           MANAGEMENT OF THE FUND

      The Incorporators of the Corporation are the Directors of The Co-
operative Central Bank which is the statutory reserve bank and insurer of
deposits in excess of Federal deposit insurance limitations for
Massachusetts co-operative banks. The Board of Directors of the Corporation
is elected by the Incorporators.

      William F. Casey, Jr., President, has been the Fund's primary
investment officer since April 1, 2000. Previously, Mr. Casey held the
position of Executive Vice President of the Bank Investment Fund since its
inception in 1985. Mr. Casey is also President of the Co-operative Central
Bank and served as Financial Vice President from 1980 to 1986 and Executive
Vice President and Treasurer of the Co-operative Central Bank from 1986 to
2000. Mr. Casey is a Certified Public Accountant and had been employed in
several executive positions in both public accounting and banking prior to
1980.

      The Fund is governed by a Board of Directors that meets quarterly to
review the Fund's investments, performance, expenses, and other business
affairs. The Board elects the Fund's officers. All Board members are
independent directors.

      The directors and officers of the Corporation are not eligible to
hold the equity securities of the Corporation; the Corporation's charter
limits its eligible shareholders to certain Massachusetts banks and certain
other institutions. The directors are also directors and/or officers of co-
operative banks which may own beneficial interests in shares of the Fund.

      Robert W. Terravecchia, Jr. was elected as a director in May 2003 by
the Board of Incorporators and appointed as an additional member of the
audit committee in June 2003 by the Board of Directors. Mr. Terravecchia is
both an attorney and certified public accountant in Massachusetts. Mr.
Terravecchia has been an officer of Weymouth Bank since 1994 and held
several positions in public accounting prior thereto. Mr. Terravecchia has
been designated as the audit committee member with financial expertise.


  12


      Directors and Officers of the Corporation, together with information
as to their principal business occupations during the past five years, are
shown below:




                                                                                                      Number of
                                                                                                     Portfolios         Other
                                                         Term of                                       in Fund      Directorships
                                                       Office and                                      Complex        of Public
         Name, Age              Position(s) Held        Length of       Principal Occupation(s)      Overseen by      Companies
        and Address                With Fund           Time Served        During Past 5 Years         Directors         Held
        -----------             ----------------       -----------      -----------------------      -----------    -------------

<s>                            <c>                     <c>            <c>                                 <c>           <c>
William F. Casey, Jr.          President (since        Yearly         President of The                    2             None
(60)                           April 1, 2000);         since 1985     Co-operative Central
75 Park Plaza,                 Executive Vice                         Bank,
Boston, MA                     President prior                        Boston, Massachusetts
02116-3934                     thereto                                (since April 1, 2001);
                                                                      Executive Vice President
                                                                      and Treasurer of The
                                                                      Co-operative Central
                                                                      Bank prior thereto

Susan L. Ellis                 Vice President          Yearly         Vice President of The               2             None
(55)                           and Treasurer           since 1985     Co-operative Central
75 Park Plaza,                                                        Bank,
Boston, MA                                                            Boston, Massachusetts
02116-3934

Annemarie Lee                  Vice President and      Yearly         Vice President of The               2             None
(46)                           Clerk of the            since 1985     Co-operative Central
75 Park Plaza,                 Corporation (since                     Bank,
Boston, MA                     June 19, 2003); and                    Boston, Massachusetts
02116-3934                     Vice President
                               prior thereto

John R. McSorley               Vice President          Yearly         Vice President of                   2             None
(62)                                                   since 2003     R. Seelaus & Co., Inc.
75 Park Plaza,                                                        Boston, Massachusetts
Boston, MA                                                            (2002-2003); Vice
02116-3934                                                            President of PaineWebber
                                                                      Inc., Boston, Massachusetts
                                                                      (1977-2000)

Peter W. Copelas               Director                Term ends      President of the Heritage           2             None
(62)                                                   2006, since    Co-operative Bank,
5 Mustang Circle,                                      2004           Salem, Massachusetts
Danvers, MA
01923


  13




                                                                                                      Number of
                                                                                                     Portfolios         Other
                                                         Term of                                       in Fund      Directorships
                                                       Office and                                      Complex        of Public
         Name, Age              Position(s) Held        Length of       Principal Occupation(s)      Overseen by      Companies
        and Address                With Fund           Time Served        During Past 5 Years         Directors         Held
        -----------             ----------------       -----------      -----------------------      -----------    -------------

<s>                            <c>                     <c>            <c>                                 <c>           <c>
James F. Culhane               Director and            Term ends      Chairman of the Board of            2             None
(74)                           Chairman of the         2006, since    the North Cambridge
75 Charles Diersch St.,        Board                   2000           Co-operative Bank,
E. Weymouth, MA                                                       Cambridge, Massachusetts
02189                                                                 (since May 2002) and
                                                                      President prior thereto

Alfonso De Vito                Director*               Term ends      Chairman of the Board               2             None
(68)                                                   2006, since    of The Village Bank,
26 Rustic Street,                                      1999           Newton, Massachusetts
Newton, MA
02458

Edward T. Mulvey               Director*               Term ends      Chairman of the Board               2             None
(69)                                                   2005, since    of the Pilgrim
50 Pond Street,                                        1999           Co-operative Bank,
Cohasset, MA                                                          Cohasset, Massachusetts
02025

Harold S. Otto                 Director                Term ends      President of the Methuen            2             None
(54)                                                   2005, since    Co-operative Bank
44 Laconia Circle                                      2002           Methuen, Massachusetts
North Andover, MA
01845

Robert W. Terravecchia, Jr.    Director*               Term ends      President of the Weymouth           2             None
(40)                                                   2007, since    Bank,
15 Tayla Drive,                                        2003           Weymouth, Massachusetts
Weymouth, MA                                                          (since 2000) and Treasurer
02189                                                                 prior thereto

Joseph F. Truskowski, Jr.      Director                Term ends      President of the                    2             None
(54)                                                   2007, since    Adams Co-operative
55 Orchard Hill,                                       2004           Bank,
North Adams, MA                                                       Adams, Massachusetts
02145

<FN>
*  Members of the Audit Committee
</FN>



  14


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  15


                            Financial Highlights
               (For a share outstanding throughout each year)

      The financial highlights table is intended to help you understand the
Fund's financial performance for the past 10 years. Certain information
reflects financial results for a single fund share. The total returns in
the table represent the rate that an investor would have earned (or lost)
on an investment in the Fund (assuming reinvestment of all dividends and
distributions). This information has been audited by Parent, McLaughlin &
Nangle, whose report, along with the Fund's financial statements, are
included elsewhere herein.




                                                                 Year Ended December 31,
                                                           -----------------------------------
                                                             2004         2003         2002
                                                             ----         ----         ----

<s>                                                        <c>          <c>          <c>
Net asset value, beginning of year                         $1,000.00    $1,000.00    $1,000.00
                                                           ---------    ---------    ---------

Income from investment operations:
  Net investment income                                        11.89        10.89        18.38
  Net realized loss on investment transactions                 (0.60)        0.00         0.00
                                                           ---------    ---------    ---------
      Total from investment operations                         11.29        10.89        18.38
                                                           ---------    ---------    ---------

Less distributions:
  Dividends from net investment income                        (11.29)      (10.89)      (18.38)
                                                           ---------    ---------    ---------
      Total distributions                                     (11.29)      (10.89)      (18.38)
                                                           ---------    ---------    ---------
  Net asset value, end of year                             $1,000.00    $1,000.00    $1,000.00
                                                           =========    =========    =========
      Total return                                              1.13%*       1.09%        1.85%

Ratios/Supplemental data:
  Net assets, end of year (in 000's)                       $ 155,187    $ 401,193    $ 808,883
  Ratio of expenses to average net assets before
   federal income tax expense reduction                         0.19%        0.12%        0.11%
  Ratio of expenses to average net assets after
   federal income tax expense reduction                         0.17%        0.12%        0.11%
  Ratio of net investment income to average net
   assets                                                       1.09%        1.10%        1.81%

<FN>
*  Total return and ratio of net investment income to average net assets
would have been lower in 2004 had federal income tax expense not been
reduced during the period.
</FN>



                     See notes to financial statements.


  16





                                                                                Year Ended December 31,
                                                      ---------------------------------------------------------------------------
                                                        2001       2000       1999       1998       1997       1996       1995
                                                        ----       ----       ----       ----       ----       ----       ----

<s>                                                   <c>        <c>        <c>        <c>        <c>        <c>        <c>
Net asset value, beginning of year                    $1,000.00  $1,000.00  $1,000.00  $1,000.00  $1,000.00  $1,000.00  $1,000.00
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------

Income from investment operations:
  Net investment income                                   40.90      61.35      48.87      53.07      53.83      52.53      57.12
  Net realized loss on investment transactions             0.00       0.00       0.00       0.00       0.00       0.00       0.00
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
      Total from investment operations                    40.90      61.35      48.87      53.07      53.83      52.53      57.12
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------

Less distributions:
  Dividends from net investment income                   (40.90)    (61.35)    (48.87)    (53.07)    (53.83)    (52.53)    (57.12)
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
      Total distributions                                (40.90)    (61.35)    (48.87)    (53.07)    (53.83)    (52.53)    (57.12)
                                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
  Net asset value, end of year                        $1,000.00  $1,000.00  $1,000.00  $1,000.00  $1,000.00  $1,000.00  $1,000.00
                                                      =========  =========  =========  =========  =========  =========  =========
      Total return                                         4.17%      6.31%      5.00%      5.44%      5.52%      5.38%      5.86%

Ratios/Supplemental data:
  Net assets, end of year (in 000's)                  $ 667,421  $ 184,592  $ 175,656  $ 286,629  $ 235,204  $ 210,208  $ 245,151
  Ratio of expenses to average net assets before
   federal income tax expense reduction                    0.14%      0.17%      0.15%      0.15%      0.16%      0.15%      0.13%
  Ratio of expenses to average net assets after
   federal income tax expense reduction                    0.14%      0.17%      0.15%      0.15%      0.16%      0.15%      0.13%
  Ratio of net investment income to average net
   assets                                                  3.72%      6.14%      4.84%      5.30%      5.22%      5.26%      5.75%


                     See notes to financial statements.


  17


Form of Letterhead of Parent, McLaughlin & Nangle

                        INDEPENDENT AUDITOR'S REPORT

TO THE SHAREHOLDERS AND BOARD OF DIRECTORS
  BANK INVESTMENT FUND-LIQUIDITY FUND
  BOSTON, MASSACHUSETTS

      We have audited the accompanying statement of assets and liabilities
of Bank Investment Fund-Liquidity Fund, including the schedule of portfolio
of investments, as of December 31, 2004, and the related statement of
operations for the year then ended, the statement of changes in net assets
for each of the two years in the period then ended, and the financial
highlights for each of the ten years in the period then ended. These
financial statements and financial highlights are the responsibility of the
Fund's management. Our responsibility is to express an opinion on these
financial statements and financial highlights 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 and financial highlights are free of
material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial
statements. Our procedures included confirmation of securities owned as of
December 31, 2004, by correspondence with the custodians and brokers. 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 and financial highlights
referred to above present fairly, in all material respects, the financial
position of Bank Investment Fund-Liquidity Fund as of December 31, 2004,
the results of its operations for the year then ended, the changes in its
net assets for each of the two years in the period then ended, and the
financial highlights for each of the ten years in the period then ended, in
conformity with accounting principles generally accepted in the United
States of America.

                                       /s/ Parent, McLaughlin & Nangle

                                         Certified Public Accountants

             Member of Public Company Accounting Oversignt Board


Boston, Massachusetts
January 20, 2005


  18


                     BANK INVESTMENT FUND-LIQUIDITY FUND

                     STATEMENT OF ASSETS AND LIABILITIES
                              December 31, 2004



<s>                                                                               <c>

ASSETS:
  INVESTMENTS, at cost which approximates value                                   $ 35,886,811

  REPURCHASE AGREEMENTS                                                            118,650,000

  INTEREST RECEIVABLE                                                                  290,639

  OTHER ASSETS                                                                          10,447

  CASH                                                                                 474,896
                                                                                  ------------

    TOTAL ASSETS                                                                   155,312,793
                                                                                  ------------

LIABILITIES:
  DIVIDENDS PAYABLE                                                                     54,166

  ACCRUED EXPENSES                                                                      72,036
                                                                                  ------------

    TOTAL LIABILITIES                                                                  126,202
                                                                                  ------------

NET ASSETS: (Equivalent to $1,000 per share based on 155,186.5910 shares of
 beneficial interest outstanding)                                                 $155,186,591
                                                                                  ============

REPRESENTED BY:
  Paid-in Capital                                                                 $155,186,591
  Undistributed net investment income                                                  181,035
  Accumulated net realized losses on investments                                      (181,035)
                                                                                  ------------

    TOTAL NET ASSETS                                                              $155,186,591
                                                                                  ============


                     See notes to financial statements.


  19


                     BANK INVESTMENT FUND-LIQUIDITY FUND

                           STATEMENT OF OPERATIONS
                        Year Ended December 31, 2004



<s>                                                                  <c>          <c>
INVESTMENT INCOME:                                                                $3,763,179

EXPENSES:
  Compensation, payroll taxes and benefits-officers                  $ 87,197
  Compensation, payroll taxes and benefits-other                       98,329
  Occupancy                                                           100,019
  Other bank fees                                                      61,453
  Professional fees                                                    39,977
  Distribution expenses                                                33,559
  Equipment and data processing                                        31,941
  Directors' fees                                                      21,000
  Insurance expense                                                    19,116
  Postage and telephone                                                13,488
  Meetings and travel                                                  12,361
  Shareholder reports                                                   5,065
  Stationary and supplies                                               4,156
  Federal income tax                                                   54,554
  Federal income tax reduction                                        (53,854)
  Other expenses                                                      (22,466)
                                                                     --------
      TOTAL EXPENSES                                                                 505,895
                                                                                  ----------
      INVESTMENT INCOME-NET                                                        3,257,284
                                                                                  ----------
      REALIZED NET LOSS ON INVESTMENT SECURITIES
       SOLD                                                                         (181,035)
                                                                                  ----------

      NET INCREASE IN NET ASSETS RESULTING FROM
       OPERATIONS                                                                 $3,076,249
                                                                                  ==========


                     See notes to financial statements.


  20


                     BANK INVESTMENT FUND-LIQUIDITY FUND

                     STATEMENT OF CHANGES IN NET ASSETS




                                                          Year Ended December 31,
                                                      -------------------------------
                                                          2004              2003
                                                          ----              ----

<s>                                                   <c>               <c>
INCREASE IN NET ASSETS FROM OPERATIONS:
  Investment income-net                               $   3,257,284     $   7,491,592
  Realized net loss on investment securities sold          (181,035)                -
                                                      -------------     -------------

NET INCREASE IN NET ASSETS RESULTING IN
 OPERATIONS:                                              3,076,249         7,491,592

DIVIDENDS TO SHAREHOLDERS FROM:
  Investment income-net                                  (3,076,249)       (7,491,592)

TRANSACTIONS IN SHARES OF BENEFICIAL INTEREST-
 NET DECREASE                                          (246,006,495)     (407,689,880)
                                                      -------------     -------------

      TOTAL DECREASE IN NET ASSETS                     (246,006,495)     (407,689,880)

NET ASSETS:
  Beginning of year                                     401,193,086       808,882,966
                                                      -------------     -------------

  End of year                                         $ 155,186,591     $ 401,193,086
                                                      =============     =============


                     See notes to financial statements.


  21


                     BANK INVESTMENT FUND-LIQUIDITY FUND

                          PORTFOLIO OF INVESTMENTS
                              December 31, 2004

Obligations of Federal Agencies-1.6%




                                        Par        Coupon       Maturity Date           Value
                                        ---        ------       -------------           -----

<s>                                 <c>            <c>       <c>                     <c>
Federal Home Loan Bank              $ 2,500,000    4.125%          01/14/05          $  2,502,100
                                    -----------                                      ------------
                                                             (Value $  2,514,063)

Certificates of Deposit-2.7%

Bank of Fall River,
 a Cooperative Bank                 $   500,000    2.25%           01/10/05          $    500,000
Fidelity Cooperative Bank               500,000    2.25            01/19/05               500,000
Lowell Cooperative Bank                 200,000    1.98            03/23/05               200,000
Mt. Washington Cooperative Bank         450,000    2.25            01/04/05               450,000
Mt. Washington Cooperative Bank         300,000    2.25            02/22/05               300,000
Mt. Washington Cooperative Bank         600,000    2.50            04/04/05               600,000
NCB, FSB                              1,500,000    2.25            01/18/05             1,500,000
NCB, FSB                                100,000    1.90            04/04/05               100,000
                                    -----------                                      ------------
                                    $ 4,150,000              (Value $  4,150,000)    $  4,150,000
                                    -----------                                      ------------

Commercial Paper-3.2%

Merrill Lynch & Co., Inc.           $ 5,000,000    2.28%*          01/24/05          $  4,992,400
                                    -----------                                      ------------
                                                             (Value $  4,992,400)

Short-Term Corporate Bonds and Notes-4.5%

Associates Corp. of N.A.            $ 7,000,000    7.75%           02/15/05          $  7,056,217
                                    -----------                                      ------------
                                                             (Value $  7,038,934)

<FN>
- --------------------
*     Annualized yield on date of purchase.
</FN>


                     See notes to financial statements.


  22


                     BANK INVESTMENT FUND-LIQUIDITY FUND

                    PORTFOLIO OF INVESTMENTS (continued)
                              December 31, 2004

Federal Funds Sold-7.9%




                                        Par        Coupon       Maturity Date           Value
                                        ---        ------       -------------           -----

<s>                                 <c>            <c>       <c>                     <c>
Bank of America, N.A.               $ 6,141,418    2.21%           01/03/05          $  6,141,418
Eastern Bank, N.A.                    6,044,676    2.25            01/03/05             6,044,676
                                    -----------                                      ------------
                                    $12,186,094              (Value $ 12,186,094)    $ 12,186,094
                                    ===========                                      ============

Money Market Deposits-3.2%

NCB, FSB                            $ 5,000,000    2.00%           01/03/05          $  5,000,000
                                    -----------                                      ------------
                                                             (Value $  5,000,000)

                                                             (Value $ 35,881,491)    $ 35,886,811
                                                                                     ------------

Repurchase Agreement-76.5%
$118,650,000                        Repurchase Agreement dated December 31, 2004 with Morgan
                                    Stanley Dean Witter, Inc. due January 3, 2005 with respect to
                                    various U.S. Governments ranging from:
                                      Par Value         $1,000-$51,615,000-Totaling $257,448,614
                                      Rate Range        1.80%-15.00%
                                      Maturity Range    01/05/2005-12/01/2034
                                    Maturity value of $118,671,258 for an effective yield of 2.15%.

                                                             (Value $118,650,000)    $118,650,000
                                                                                     ------------
Total Investments-99.6%                                      (Value $154,531,491)    $154,536,811
                                                                                     ------------
Other assets in excess of liabilities-0.4%                                                649,780
                                                                                     ------------
Net assets-100.0%                                                                    $155,186,591
                                                                                     ============


                     See notes to financial statements.


  23


                     BANK INVESTMENT FUND-LIQUIDITY FUND

                        NOTES TO FINANCIAL STATEMENTS

NOTE 1. Organization:

      The Bank Investment Fund (the "Corporation") was organized effective
April 7, 1985 pursuant to a Special Act of the Commonwealth of
Massachusetts (Acts of 1984, Chapter 482, as amended,) under the chartered
name "Co-operative Bank Investment Fund" and does business under the name
"Bank Investment Fund." The Corporation is registered with the Securities
and Exchange Commission under the Investment Company Act of 1940, as
amended, as a diversified, open-end management investment company. The
Corporation invests and manages two mutual funds derived from the voluntary
subscriptions made by eligible banks.

      Liquidity Fund (the "Fund") is a no-load, diversified, open-end money
market fund, which commenced operations on October 12, 1988. Fund shares
are currently offered to the following eligible investors: Massachusetts
Co-operative Banks, Massachusetts Savings Banks, Massachusetts Trust
Companies, Federally Chartered Savings Banks and Savings and Loan
Associations with their principal place of business in Massachusetts, The
Co-operative Central Bank Reserve Fund, The Savings Bank Life Insurance
Company of Massachusetts and the National Cooperative Bank.

      Because more than one fund will be operated by the Corporation,
operating expenses related directly to a single fund operation will be
charged directly to that fund. Common or indirect expenses will be
allocated among funds in proportion to the ratio of the net assets of each
fund to total net assets of the Corporation or on such other basis as the
Board of Directors of the Corporation may determine from time to time to be
fair and equitable.

NOTE 2. Significant Accounting Policies:

      The Fund's financial statements are prepared in accordance with
generally accepted accounting principles which require the use of
management estimates. The policies described below are followed
consistently by the Fund in the preparation of its financial statements.

Accounting for investments:

      Security transactions are accounted for on the trade date (date the
order to buy or sell is executed). The Fund's investment securities are
carried at their amortized cost, which does not take into account
unrealized appreciation or depreciation. Interest income is accrued on all
debt securities on a daily basis and includes accretion of original issue
discount. Premiums, if any, and discounts are amortized or accreted on a
straight line basis, which approximates the income method.


  24


                     BANK INVESTMENT FUND-LIQUIDITY FUND

                  NOTES TO FINANCIAL STATEMENTS (continued)

NOTE 2. Significant Accounting Policies (continued):

Use of estimates:

      The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities, if any, at the date of the
financial statements and the reported amounts of increases and decreases in
net assets from operations during the reporting period. Actual results
could differ from those estimates.

Repurchase agreements:

      It is the policy of the Fund to require the custodian bank to take
possession, to have legally segregated in the Federal Reserve Book Entry
System or to have segregated within the custodian bank's vault, all
securities held as collateral in support of repurchase agreement
investments. Additionally, procedures have been established by the Fund to
monitor, on a daily basis, the market value of each repurchase agreement's
underlying investments to ensure the existence of a proper level of
collateral.

Federal income taxes:

      The Corporation's policy is to comply with the requirements of the
Internal Revenue Code applicable to regulated investment companies and to
distribute substantially all of its taxable income to its shareholders.
Therefore, no federal income tax provision is generally required.

      In 2004, the Fund incurred a federal income tax liability of $53,854
on $181,035 of undistributed income resulting from the non deductibility of
$181,035 in security losses on portfolio repositioning. The resulting loss
carry forward of $181,035 will expire on December 31, 2012. A corporate
officer voluntarily contributed $53,854 to the Fund in order for the Fund
to pay this federal income tax expense without either reducing the per
share distribution for December 2004 or reducing the per share net asset
value below $1,000.

Dividends to shareholders:

      The Fund distributes all of its net investment income on a daily
basis. Dividends are declared on each day that the Fund is open for
business. Investors receive dividends in additional shares unless they
elect to receive cash. Payment is made in additional shares at the net
asset value on the payable date or in cash, on a monthly basis.
Distributions of realized net capital gains, if any, are declared and paid
once each year and are reinvested in additional shares at net asset value
or, at each shareholder's option, paid in cash.

      The short-term capital losses recorded in connection with the
portfolio repositioning in November 2004 resulted in undistributed taxable
income of $181,035.


  25


                     BANK INVESTMENT FUND-LIQUIDITY FUND

                  NOTES TO FINANCIAL STATEMENTS (continued)

NOTE 2. Significant Accounting Policies (continued):

Net asset value:

      The net asset value per share is determined daily by dividing the
value of all investment securities and all other assets, less liabilities,
by the number of shares outstanding. The Fund has established procedures
reasonably designed to stabilize the net asset value per share at $1,000.

NOTE 3. Shares of Beneficial Interest:

      Chapter 482 of the Acts of 1984, as amended by Chapter 244, Acts of
1986, of the Commonwealth of Massachusetts permits the directors to issue
an unlimited number of full and fractional shares of beneficial interest
(no par, non-voting, with a stated value of $1,000 per share).

      Transactions in shares of beneficial interest are summarized as
follows:




                                      Year Ended                          Year Ended
                                  December 31, 2004                   December 31, 2003
                           --------------------------------    --------------------------------
                               Shares            Amount            Shares            Amount
                               ------            ------            ------            ------

<s>                        <c>               <c>               <c>               <c>
Sold                       1,355,157.9629    $1,355,157,963    2,875,965.4073    $2,875,965,407
Issued in reinvestment
 of dividends                  2,087.7331         2,087,733        4,827.0807         4,827,081
                           --------------    --------------    --------------    --------------
                           1,357,245.6960     1,357,245,696    2,880,792.4880     2,880,792,488
Redeemed                   1,603,252.1914     1,603,252,191    3,288,482.3685     3,288,482,368
                           --------------    --------------    --------------    --------------
Net decrease                (246,006.4954)   $ (246,006,495)    (407,689.8805)   $ (407,689,880)
                           ==============    ==============    ==============    ==============


NOTE 4. Distribution Expenses:

      The Fund has adopted a Plan of Distribution (the "Plan"), pursuant to
rule 12b-1 under the Investment Company Act of 1940, to use the assets of
the Fund to finance certain activities relating to the distribution of its
shares to investors. The Plan authorizes the Fund to pay for the cost of
preparing, printing, and distributing offering circulars to prospective
investors, for certain other direct or indirect marketing expenses, direct
payments to sales personnel, and for the cost of implementing and operating
the Plan. Plan expenses may not exceed an amount computed at an annual rate
of .12 of 1% of the Fund's average daily net assets. The Fund paid or
accrued $33,559 (.01% of average net assets) pursuant to this Plan for the
year ended December 31, 2004.


  26


                     BANK INVESTMENT FUND-LIQUIDITY FUND

                  NOTES TO FINANCIAL STATEMENTS (continued)

NOTE 5. Pension Plans:

      The Fund is a participating employer in the Co-operative Banks
Employees Retirement Association, and has, in effect, a Defined
Contribution Plan covering all eligible officers and employees. Under the
plan, contributions by employees are doubled by the Fund, up to a maximum
of 10% of each employee's salary. Effective January 1, 1989, the Fund also
participates in a Defined Benefit Plan, which covers all eligible
employees, and is funded currently. The Fund's contributions to these
multi-employer plans for the year ended December 31, 2004 was $32,033.

NOTE 6. Transactions With Related Parties:

      The Incorporators of the Corporation are the Directors of The Co-
operative Central Bank, which is the statutory reserve bank and insurer of
deposits in excess of Federal deposits insurance limitations for
Massachusetts co-operative banks. The Board of Directors of the Corporation
is elected by the Incorporators.

      The Fund accrued or paid the Bank Investment Fund-Fund One $173,900
for the year ended December 31, 2004 as a net reimbursement for the
proportionate share of expense items used in common by both funds. All fees
and expenses for the Fund are estimated and accrued daily. Actual operating
expenses for the year ended December 31, 2004 were .17% of average net
assets.

      In 2004, the Fund incurred a federal income tax liability of $53,854
on $181,035 of undistributed income resulting from the non deductibility of
$181,035 in security losses on portfolio repositioning. A corporate officer
voluntarily contributed $53,854 to the Fund in order for the Fund to pay
this federal income tax expense without either reducing the per share
distribution for December 2004 or reducing the per share net asset value
below $1,000.


  27


            The following sheets are perforated for your removal
          and use in the establishment or updating of your account.


  28


                            BANK INVESTMENT FUND
                               LIQUIDITY FUND
                          ACCOUNT APPLICATION FORM

REGISTRATION. The account should be registered as follows:

                                                         DATE: ____________
NAME: _____________________________________________________________________
POST OFFICE BOX: __________________________________________________________
STREET ADDRESS: ___________________________________________________________
CITY/TOWN: ______________________________________ STATE: __________________
ZIP CODE: ____________________________ TELEPHONE NUMBER: __________________
TAX ID NUMBER _____________________________________________________________
FAX NUMBER:_____________________________ E-MAIL ADDRESS: __________________
INITIAL INVESTMENT: $____________________________________ (Minimum $50,000)

                           MONTHLY CASH DIVIDENDS

[ ]   Check if dividends are to be paid monthly in cash. Otherwise
      dividends will be AUTOMATICALLY REINVESTED in additional shares of
      the Fund.

                         TELEPHONE REDEMPTION ORDERS

      Redemption proceeds will be sent ONLY to the bank or trust company
listed below, for credit to the investor's account. The investor hereby
authorizes the BANK INVESTMENT FUND to honor telephone or written
instructions, without a signature guarantee, for redemption of Fund shares.
THE FUND and its Agents will not be liable for any loss, expense or cost
arising out of such transactions.

      Enclose a specimen copy of your check or deposit slip (marked VOID)
for the bank account listed below. To facilitate the wiring of your
redemption proceeds the indicated bank should be a commercial bank.

Name of Bank: _____________________________________________________________
Bank Account No.: _________________________________________________________
Bank Address: _____________________________________________________________
              street
              _______________________________________________ MA __________
              city                                                   zip
Name on Account: __________________________________________________________
Bank Routing/Transit No.: _________________________________________________

          AUTHORIZED PERSONS-TELEPHONE INVESTMENTS AND REDEMPTIONS

         Authorized person           Title              Initials
         -----------------           -----              --------

1. ________________________________________________________________________
2. ________________________________________________________________________
3. ________________________________________________________________________
4. ________________________________________________________________________
5. ________________________________________________________________________


  29


                            CORPORATE RESOLUTIONS

      We have enclosed with this application form the necessary corporate
resolutions to authorize corporate officers to make wire or cash payment
transfers to the Bank Investment Fund and to purchase, sell or exchange
shares of beneficial ownership in the Bank Investment Fund.

                         SIGNATURE AND CERTIFICATION

      We have received and read the Offering Circular, and agree to its
terms and conditions by signing below. By the execution of this
Application, the undersigned represent and warrant that they are duly
authorized to sign this Application and to purchase or redeem shares of the
Fund on behalf of the investor.

      The undersigned hereby certify under penalty of perjury that the
above Taxpayer Identification Number is correct and that the investor is
not subject to backup withholding.

      We further certify and agree that the certifications, authorizations
and appointments in this document will continue until the Bank Investment
Fund receives actual written notice of any change thereof.

Signature _____________________________ Title _____________________________

Signature _____________________________ Title _____________________________

Two signatures are required, one of which should be the Secretary or Clerk
of the corporation.

                             SIGNATURE GUARANTEE

      In order to facilitate telephone redemptions, you must have your
signature(s) on this application guaranteed by a commercial bank or stock
exchange member firm.

___________________________________________________________________________
Name of Bank or Investment Dealer

___________________________________________________________________________
By (signature of authorized person)

___________________________________________________________________________
Title (authorized person)

___________________________________________________________________________


  30


                     CERTIFICATE OF CORPORATE RESOLUTION

      For Massachusetts Co-operative Banks, Massachusetts Savings Banks,
Massachusetts Trust Companies, Federally Chartered Savings Banks and
Savings and Loan Associations with their principal place of business in
Massachusetts, The Co-operative Central Bank Reserve Fund, The Savings Bank
Life Insurance Company of Massachusetts and the National Cooperative Bank
only. This form authorizes the individuals below to redeem shares by
telephone or exchange.

      The undersigned is Secretary or Clerk of _________________ and hereby
certifies that the following individuals:    (name of corporation)

                Name                          Title
                ----                          -----

___________________________________________________________________________

___________________________________________________________________________

___________________________________________________________________________

___________________________________________________________________________

___________________________________________________________________________

are duly authorized by corporate resolution or otherwise to act on behalf
of the eligible bank in connection with its ownership of shares in the Bank
Investment Fund, Liquidity Fund and in particular to give instructions for
the purchase, sale or exchange of any said shares and to execute any
necessary forms in connection therewith.

      The Bank Investment Fund will consider this authorization to be in
full force and in effect until otherwise notified in writing.

      IN WITNESS WHEREOF, the undersigned has executed this Certificate the
_______________ day of
___________________ 20__________.


___________________________________________________________________________
Secretary or Clerk


  31


                                    NOTES


  32


                            FINANCIAL STATEMENTS

      As required by applicable statutes, semi-annual financial statements
are furnished to the shareholder, the Commissioner of Banks and the
Securities and Exchange Commission.

                           ADDITIONAL INFORMATION

      The Bank Investment Fund (the "Corporation") has filed with the
Securities and Exchange Commission in Washington, D.C., under the chartered
name the "Co-operative Bank Investment Fund" a registration statement on
Form N-1A (together with all amendments and exhibits thereto, hereinafter
referred to as the "Registration Statement") under the Investment Company
Act of 1940. This Offering Circular does not contain all of the information
in the Registration Statement. The Corporation has also filed a complete
schedule of portfolio holdings Form N-Q with the Securities and Exchange
Commission. The Registration Statement may be reviewed and copied at the
Public Reference Room of the Securities and Exchange Commission; or:

      By Phone:   1-800-Sec-0330
      By mail:    Public Reference Section
                  Securities and Exchange Commission
                  Washington, D.C. 20549-6009
                 (duplicating fee required)
      On the Internet: www.sec.gov
      (Investment Company Act File No. 811-4421)

      The Corporation will provide, without charge to any person to whom
this Offering Circular is delivered on the written or oral request of any
such person, a copy of the Registration Statement and the additional
information contained therein and documents relating to certain exemptions
from the Investment Company Act of 1940 (see ORGANIZATION). Written
requests should be directed to the Bank Investment Fund, 75 Park Plaza,
Boston, MA 02116-3934. Telephone requests may be directed collect to 617-
695-0415.

                     ==================================
                            BANK INVESTMENT FUND

                               LIQUIDITY FUND


                                   [LOGO]


                                75 Park Plaza
                            Boston, MA 02116-3934
                                617-695-0415
                       Web: www.bankinvestmentfund.com
                     E-mail: bif@bankinvestmentfund.com
                     ==================================













Item 2. Code of Ethics.

The Corporation has adopted a code of ethics that applies to the
Corporation`s principal executive officer, principal financial
officer, principal accounting officer or controller, or persons
performing similar functions. There were no amendments to or waivers
from the Code during the period covered by this report.

Item 3. Audit committee Financial Expert.

The Corporation`s Board of Directors has determined that Robert W.
Terravecchia, Jr., a member of the Audit Committee of the Board, is a
financial expert as defined by the Securities and Exchange Commission
(the ``SEC``). Mr. Terravecchia is ``independent`` as defined by the
SEC for purposes of audit committee financial expert determinations.

Item 4. Principal Account Fees and Services.

(a) Audit Fees.  The aggregate fees billed for each of the last two
fiscal years for professional services by the Corporation`s principal
accountant for the audit of the Corporation`s annual financial
statements were $36,000 in 2003 and $38,000 in 2004.

(b) Audit Related Fees.  The aggregate fees billed for the assurance
and related services by the accountant that are reasonably related to
the performance of the audit of the Corporation`s (Series 2) financial
statements and are not reported under paragraph (a) of this Item 4
were $2,100 in 2003 and $2,100 in 2004. These services consisted of
security verifications required by Rule 17f-2 under the Investment
Company Act of 1940, as amended.

(c) Tax Fees.  The aggregate fees billed for professional services
rendered by the accountant for tax return preparation were $4,000 in
2003 and $4,000 in 2004. These services consisted of preparation of
U.S. Federal income and excise tax returns.
(d) All Other Fees.  No other fees were billed by the accountant for
any products and services.

Audit Committee Pre-Approval Policies and Procedures.  The
Corporation`s Audit Committee has established procedures for pre-
approval of the accountant`s engagement letter for all audit, audit
related tax or other non-audit, if any, services.

Auditor Independence.  The Corporation`s Audit Committee considers the
$4,000 annual tax return preparation fees, which were pre-approved, to
be compatible with maintaining auditor`s independence.

Item 5. Audit Committee of Listed Companies.

Not applicable

Item 6. Schedule of Investments. Schedule of investments in securities
of unaffiliated issuers is included under Item 1.

Item 7. Disclosure of Proxy Voting Policies and Procedures for Closed-
End Funds.  Not applicable

Item 8. Purchases of Equity Securities by Closed-End Funds.

Not applicable

Item 9. Submission of Matters to a Vote of Security Holders.

Not applicable

Item 10. Controls and Procedures.

(a)     The Corporation`s principal executive officer and principal
financial officer have evaluated the Corporation`s disclosure controls
and procedures within 90 days of this filing of this report and have
concluded that they are effective in ensuring that the information
required to be disclosed by the registrant in its reports or
statements is recorded, processed, summarized and reported within the
time periods specified in the rules and forms of the Securities and
Exchange Commission.

(b)     There were no significant changes in the registrant`s internal
controls or in other factors that could significantly affect these
controls subsequent to the date of the last evaluation. No significant
deficiencies or material weaknesses were noted that would require any
corrective action.

Item 11. Exhibits.

(a)(1)     Code of Ethics referred to in Item 2

(a)(2)     Certifications pursuant to Section 302 of the principal
executive and principal financial officers as required by Rule 30a-
2(a) under the Investment Company Act of 1940.

(b)        Certifications pursuant to Section 906 of the principal
executive and principal financial officers as required by Rule 30a-
2(b) under the Investment Company Act of 1940.
















                              SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934
and the Investment Company Act of 1940, the registrant has duly caused
this report to be signed on its behalf by the undersigned, thereunto
duly authorized.


                 CO-OPERATIVE BANK INVESTMENT FUND
                     d/b/a Bank Investment Fund



By / s/William F. Casey, Jr.
   William F. Casey Jr.
   President

Date: March 9, 2005





Pursuant to the requirements of the Securities Exchange Act of 1934
and the Investment Company Act of 1940, this report has been signed
below by the following persons on behalf of the registrant and in the
capacities and on the dates indicated.


By / s/William F. Casey, Jr.
   William F. Casey Jr.
   President


By /s/Susan L. Ellis
   Susan L. Ellis
   Treasurer

Date: March 9, 2005








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