Exhibit 12



                                                    ___, 2004



Federated Municipal Securities Income Trust, on behalf of its portfolio,
Federated Michigan Intermediate Municipal Trust
5800 Corporate Drive
Pittsburgh, Pennsylvania  15237

Golden Oak(R)Family of Funds, on behalf of its portfolio,
Golden Oak(R) Michigan Tax Free Bond Portfolio
5800 Corporate Drive
Pittsburgh, Pennsylvania  15237

Ladies and Gentlemen:

     You have  requested  our  opinion  concerning  certain  federal  income tax
consequences of a transaction (the  "Reorganization") in which all of the assets
of Golden Oak(R)  Michigan Tax Free Bond  Portfolio  (the  "Acquired  Fund"),  a
portfolio of the Golden Oak(R) Family of Funds, a Delaware  statutory trust (the
"Golden  Oak(R)  Trust"),  will be acquired by  Federated  Municipal  Securities
Income Trust, a Massachusetts  business trust (the "Federated Trust"), on behalf
of  its  portfolio,   Federated  Michigan  Intermediate   Municipal  Trust  (the
"Acquiring  Fund"),  in exchange  solely for shares of the  Acquiring  Fund (the
"Acquiring Fund Shares"),  which shall  thereafter be distributed to the holders
of the  Class A Shares  and  Institutional  Shares  of the  Acquired  Fund  (the
"Acquired Fund  Shareholders"),  in  liquidation of the Acquired Fund.  Both the
Federated Trust and the Golden Oak(R) Trust are registered  open-end  management
investment  companies which qualify as regulated  investment companies described
in Section 851(a) of the Internal Revenue Code of 1986, as amended (the "Code").
The terms and conditions of the Reorganization are set forth in an Agreement and
Plan of Reorganization dated as of __, 2004, between the Federated Trust and the
Golden Oak(R) Trust (the "Agreement").  This opinion is rendered to you pursuant
to paragraph 8.5 of the Agreement.

     We have  reviewed and relied upon the  Registration  Statement on Form N-14
(the "Registration Statement") filed with the Securities and Exchange Commission
(the  "Commission")  in connection  with the  Reorganization,  the  certificates
provided to us by the Federated  Trust and the Golden Oak(R) Trust in connection
with the rendering of this opinion,  and such other documents and instruments as
we have deemed necessary for the purposes of this opinion.

     Based  upon  and  subject  to  the   foregoing,   and  assuming   that  the
Reorganization  will take place as  described  in the  Agreement,  we are of the
opinion that, for federal income tax purposes:

(a)  The Acquired  Fund's  transfer of all of its assets to the  Acquiring  Fund
     solely in exchange for Acquiring  Fund Shares and the  distribution  of the
     Acquiring Fund Shares to the Acquired Fund  Shareholders  in liquidation of
     the Acquired Fund will constitute a "reorganization"  within the meaning of
     Section  368(a) of the Code,  and the Acquiring  Fund and the Acquired Fund
     each will be "a party to a  reorganization"  within the  meaning of Section
     368(b) of the Code;

(b)  No gain or loss will be recognized  by the Acquiring  Fund upon the receipt
     of the assets of the  Acquired  Fund solely in exchange  for the  Acquiring
     Fund Shares;

(c)  No gain or loss will be  recognized  by the Acquired Fund upon the transfer
     of its assets to the  Acquiring  Fund solely in exchange for the  Acquiring
     Fund Shares or upon the  distribution  (whether actual or  constructive) of
     the Acquiring Fund Shares to the Acquired Fund Shareholders in exchange for
     their shares of stock in the Acquired Fund (the "Acquired Fund Shares");

(d)  No gain or loss will be recognized by any Acquired  Fund  Shareholder  upon
     the exchange of its Acquired Fund Shares for Acquiring Fund Shares;

(e)  The tax basis of the assets of the Acquired  Fund acquired by the Acquiring
     Fund will be the same as the tax basis of such assets to the Acquired  Fund
     immediately prior to the Reorganization;

(f)  The  aggregate  tax basis of the  Acquiring  Fund  Shares  received by each
     Acquired Fund Shareholder  pursuant to the Reorganization  will be the same
     as the  aggregate  tax  basis  of  the  Acquired  Fund  Shares  held  by it
     immediately prior to the Reorganization;

(g)  The holding  period of the assets of the Acquired  Fund in the hands of the
     Acquiring  Fund will include the period  during which such assets were held
     by the Acquired Fund; and

(h)  The holding period of the Acquiring  Fund Shares  received by each Acquired
     Fund  Shareholder  pursuant to the  Reorganization  will include the period
     during which it held the Acquired Fund Shares exchanged  therefor (provided
     the  Acquired  Fund Shares  were held as capital  assets on the date of the
     Reorganization).

     Notwithstanding  anything herein to the contrary,  we express no opinion as
to the effect of the  Reorganization on the Acquiring Fund, the Acquired Fund or
any Acquired Fund  Shareholder  with respect to any asset as to which unrealized
gain or loss is required to be recognized for federal income tax purposes at the
end of a  taxable  year (or on the  termination  or  transfer  thereof)  under a
mark-to-market system of accounting.

     This opinion is expressed as of the date hereof and is based upon the Code,
Treasury regulations  promulgated  thereunder,  administrative  positions of the
Internal Revenue Service (the "Service"),  and judicial decisions,  all of which
are subject to change either  prospectively  or  retroactively.  There can be no
assurance  that  changes in the law will not take place which  could  affect the
opinions  expressed  herein or that  contrary  positions may not be taken by the
Service.  We disclaim  any  undertaking  to advise you with respect to any event
subsequent to the date hereof.

     The  opinions  contained  herein  are  limited to those  matters  expressly
covered;  no opinion is to be  implied  in  respect  of any other  matter.  This
opinion  is  addressed  solely  to you and may not be  relied  upon by any other
person without our prior written  consent.  We hereby consent to the filing of a
copy of this  opinion  with the  Commission  as an exhibit  to the  Registration
Statement.

                                    Very truly yours,