Exhibit m



                              AMENDED AND RESTATED
                                DISTRIBUTION PLAN

                                 INVESTOR SHARES

         AMENDED AND RESTATED DISTRIBUTION PLAN, dated as of May 1, 1990, as
amended and restated through November 28, 2003, of Domini Social Investment
Trust (formerly, "Domini Social Equity Fund"), a Massachusetts business trust
(the "Trust") with respect to shares of beneficial interest of its series Domini
Social Equity Fund and Domini Social Bond Fund and any other series of the Trust
adopting this Plan (the "Series"). This Plan relates solely to shares of
beneficial interest of the Series that are designated "Investor Shares"
("Shares").

                              W I T N E S S E T H:

         WHEREAS, the Trust is engaged in business as an open-end management
investment company and is registered under the Investment Company Act of 1940
(collectively with the rules and regulations promulgated thereunder, the "1940
Act");

         WHEREAS, the Trust's shares of beneficial interest are divided into
separate series representing interests in separate securities and other assets;

         WHEREAS, the Trust has adopted an amended and restated distribution
plan in accordance with Rule 12b-1 under the 1940 Act ("Rule 12b-1") with
respect to its Series designated Domini Social Equity Fund and Domini Social
Bond Fund (the "Original Plan") and desires to adopt this Amended and Restated
Distribution Plan (the "Plan") to amend and restate the Original Plan in its
entirety in order to provide that the Plan applies solely to the newly
designated Investor Shares of the Domini Social Equity Fund and the Domini
Social Bond Fund and Investor Shares of each other Series of the Trust that
adopts this Plan as provided herein; and

         WHEREAS, the Trust has entered into an amended and restated
distribution agreement (in such form as may from time to time be approved by the
Board of Trustees of the Trust in the manner specified in Rule 12b-1) (the
"Distribution Agreement"), whereby the Distributor named in the Distribution
Agreement (the "Distributor") provides facilities and personnel and renders
services to the Trust in connection with the offering and distribution of the
Shares;

         WHEREAS, the Board of Trustees, in considering whether the Trust should
adopt and implement this Plan, has evaluated such information as it deemed
necessary to an informed determination as to whether this Plan should be adopted
and implemented and has considered such pertinent factors it deemed necessary to
form the basis for a decision to use assets of the Trust for




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such purposes, and has determined that there is a reasonable likelihood that the
adoption and implementation of this Plan will benefit the Trust and its
shareholders.

         NOW, THEREFORE, the Board of Trustees hereby adopts this Plan for the
Trust as a plan for distribution in accordance with Rule 12b-1, on the following
terms and conditions, and hereby amends and restates the Original Plan as
follows:

         1.   As specified in the Distribution Agreement, the Distributor shall
provide facilities, personnel and a program with respect to the offering and
sale of Shares.

         2.   (a) The Trust shall pay, or shall reimburse the Distributor for
any payment by the Distributor on behalf of the Trust of, expenses incurred in
connection with the sale of Shares of each Series of the Trust, including,
without limitation, payments to broker-dealers, banks, investment advisers and
other intermediaries who advise shareholders regarding the purchase or sale or
retention of Shares of the Trust, compensation of employees and related overhead
of the Distributor, advertising, marketing and research expenses and the
expenses of printing (excluding typesetting) and distributing prospectuses and
reports used for sales purposes, expenses of preparing and printing sales
literature and other distribution-related expenses, provided that the amounts so
paid or reimbursed by the Trust in connection with the sale of Shares of any
Series of the Trust shall not exceed 0.25% of the average daily net assets of
the Shares of that Series for that Series' then-current fiscal year.

              (b) The Trust may pay the Distributor a distribution fee with
respect to Shares of each Series of the Trust at an annual rate which, when
added to the amount paid or reimbursed by the Trust for expenses with respect to
Shares of that Series under paragraph (a) above, will not exceed 0.25% of the
average daily net assets of Shares of that Series for that Series' then-current
fiscal year, as compensation for distribution services provided by the
Distributor in connection with the sale of Shares of that Series.

         3.   The Trust shall pay all fees and expenses of any independent
auditor, legal counsel, administrator, transfer agent, custodian, shareholder
servicing agent, registrar or dividend disbursing agent of each Series; expenses
of distributing and redeeming Shares and servicing shareholder accounts;
expenses of preparing, printing and mailing prospectuses, shareholder reports,
notices, proxy statements reports to governmental officers and commissions and
to shareholders of each Series; expenses connected with the execution, recording
and settlement of portfolio security transactions; insurance premiums; expenses
of calculating the net asset value of Shares; expenses of shareholder meetings;
and expenses relating to the issuance, registration and qualification of Shares.


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         It is recognized that the sponsor, manager or investment adviser to a
Series may, from time to time, use its sponsorship, management or advisory fee
revenues as well as past profits or its resources from any other source, to make
payments to the Distributor or other parties with respect to any expenses
incurred in connection with the distribution of the Shares of the Series, and
further that any Distributor, shareholder servicing agent or service agent may
use its past profits or its resources from any other source, to make payments
with respect to the distribution of the Shares of a Series, and any such
payments by such sponsor, manager, investment adviser, Distributor, shareholder
servicing agent or service agent shall not constitute expenditures made pursuant
to this Plan and shall not be subject to the limitation set forth in paragraph 3
above. Notwithstanding the foregoing, to the extent that any payments made by a
Series to any sponsor, manager or investment adviser or any affiliate thereof,
including payments made from or in respect of such sponsor's, manager's or
adviser's sponsorship, management or advisory fee, should be deemed to be
indirect financing of any activity primarily intended to result in the sale of
the Shares of such Series within the context of Rule 12b-1, then such payments
shall be deemed to be authorized by this Plan but shall not be subject to the
limitation set forth in paragraph 2 above.

         4.   Nothing herein contained shall be deemed to require the Trust to
take any action contrary to its Declaration of Trust or By-Laws or any
applicable statutory or regulatory requirement to which it is subject or by
which it is bound, or to relieve or deprive the Board of Trustees of the
responsibility for and control of the conduct of the affairs of the Trust.

         5.   (a) The Original Plan having been approved with respect to each of
the Series of the Trust designated the Domini Social Equity Fund and the Domini
Social Bond Fund by a vote of at least a "majority of the outstanding voting
securities" of that Series and by a vote of the Board of Trustees and a vote of
a majority of the Trustees who are not "interested persons" of the Trust and who
have no direct or indirect financial interest in the operation of the Plan or in
any agreement related to the Plan (the "Qualified Trustees"), this Plan shall
become effective as to each of the Domini Social Equity Fund and the Domini
Social Bond Fund upon approval by a vote of the Board of Trustees and a vote of
a majority of the Qualified Trustees, such votes to be cast in person at a
meeting called for the purpose of voting on this Plan.

              (b) This Plan shall become effective as to each Series of the
Trust other than the Domini Social Equity Fund and the Domini Social Bond Fund
upon (i) approval by a vote of at least a "majority of the outstanding voting
securities" of that Series, and (ii) approval by a vote of the Board of Trustees
and a vote of a majority of the Qualified Trustees, such votes to be cast in
person at a meeting called for the purpose of voting on this Plan.

         6.   This Plan shall continue in effect indefinitely; provided,
however, that such continuance is subject to annual approval by a vote of the
Board of



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Trustees and a majority of the Qualified Trustees, such votes to be cast in
person at a meeting called for the purpose of voting on continuance of this
Plan. If such annual approval is not obtained with respect to a Series, this
Plan shall expire as to that Series on the date which is 15 months after the
date of the last approval.

         7.   This Plan may be amended at any time by the Board of Trustees,
provided that (a) any amendment to increase materially the amount to be spent
for the services described herein shall be effective only upon approval by a
vote of a "majority of the outstanding voting securities" of each applicable
Series, and (b) any material amendment of this Plan shall be effective only upon
approval by a vote of the Board of Trustees and a vote of a majority of the
Qualified Trustees, such votes to be cast in person at a meeting called for the
purpose of voting on such amendment. This Plan may be terminated at any time
with respect to any Series by a vote of a majority of the Qualified Trustees or
by a vote of a "majority of the outstanding voting securities" of the applicable
Series.

         8.   The Trust and the Distributor each shall provide the Board of
Trustees, and the Board of Trustees shall review, at least quarterly, a written
report of the amounts expended under the Plan and the purposes for which such
expenditures were made.

         9.   While this Plan is in effect, the selection and nomination of
Qualified Trustees shall be committed to the discretion of the Trustees who are
not "interested persons" of the Trust.

         10.  For the purposes of this Plan, the terms "interested persons" and
"majority of the outstanding voting securities" are used as defined in the 1940
Act. In addition, for purposes of determining the fees payable to the
Distributor, the value of a Series' net assets shall be computed in the manner
specified in the Trust's then-current prospectus with respect to that Series for
computation of the net asset value of the Shares of that Series.

         11.  The Trust shall preserve copies of this Plan, and each agreement
related hereto and each report referred to in paragraph 10 hereof (collectively,
the "Records") for a period of six years from end of the fiscal year in which
such Record was made and each such Record shall be kept in an easily accessible
place for the first two years of said record-keeping.

         12.  This Plan shall be construed in accordance with the laws of the
Commonwealth of Massachusetts and the applicable provisions of the 1940 Act.

         13.  If any provision of this Plan shall be held or made invalid by a
court decision, statute, rule or otherwise, the remainder of the Plan shall not
be affected thereby.