Exhibit 12


                      [Willkie Farr & Gallagher Letterhead]

________, 2003

Credit Suisse Fixed Income Fund
466 Lexington Avenue
New York, New York 10017

Credit Suisse Investment Grade Bond Fund, Inc.
466 Lexington Avenue
New York, New York 10017

Ladies and Gentlemen:

You have requested our opinion regarding certain federal income tax consequences
to (a) Credit Suisse Fixed Income Fund, a Massachusetts business trust (the
"Acquiring Fund"), (b) Credit Suisse Investment Grade Bond Fund, Inc., a
Maryland corporation (the "Acquired Fund"), and (c) the holders (the "Acquired
Fund Shareholders") of voting shares of the Acquired Fund (the "Acquired Fund
Shares") when the Acquired Fund Shareholders receive voting shares in the
Acquiring Fund (the "Acquiring Fund Shares") in exchange for their Acquired Fund
Shares pursuant to the acquisition by the Acquiring Fund of all of the assets of
the Acquired Fund in exchange for Acquiring Fund Shares and the assumption by
the Acquiring Fund of all of the liabilities of the Acquired Fund (the
"Reorganization"), all pursuant to that certain Agreement and Plan of
Reorganization dated ________, 2003 (the "Reorganization Agreement"), between
the Acquiring Fund and the Acquired Fund. All terms used herein and which are
not specifically defined shall have the same meanings as when used in the
Reorganization Agreement.

We have reviewed such documents and materials as we have considered necessary
for the purpose of rendering this opinion. In rendering this opinion, we have
assumed that such documents as yet unexecuted will, when executed, conform in
all material respects to the proposed forms of such documents that we have
examined. In addition, we have assumed the genuineness of all signatures, the
capacity of each party executing a document to so execute that document, the
authenticity of all documents submitted to us as originals and the conformity to
original documents of all documents submitted to us as certified or photostatic
copies.

We have made inquiry as to the underlying facts which we considered to be
relevant to the conclusions set forth in this letter. The opinions expressed in
this letter are based upon certain factual



statements relating to the Acquiring Fund and the Acquired Fund set forth in the
Registration Statement on Form N-14 (the "Registration Statement") filed by the
Acquiring Fund with the Securities and Exchange Commission and representations
made in letters from the Acquiring Fund and the Acquired Fund addressed to us
for our use in rendering this opinion (the "Tax Representation Letters"). We
have no reason to believe that these representations and facts are not valid,
but we have not attempted to verify independently any of these representations
and facts, and this opinion is based upon the assumption that each of them is
accurate. Capitalized terms used herein and not otherwise defined shall have the
meaning given them in the Registration Statement.

The conclusions expressed herein are based upon the Internal Revenue Code of
1986, as amended (the "Code"), Treasury regulations issued thereunder, published
rulings and procedures of the Internal Revenue Service and judicial decisions,
all as in effect on the date of this letter.

Based upon the foregoing, we are of the opinion that for United States federal
income tax purposes:

     (a)  the transfer of all of the Acquired Fund's assets to the Acquiring
          Fund in exchange for the Acquiring Fund Shares and the assumption by
          the Acquiring Fund of the liabilities of the Acquired Fund, and the
          distribution of such Acquiring Fund Shares to the Acquired Fund
          Shareholders in exchange for the Acquired Fund Shares, will constitute
          a "reorganization" within the meaning of Section 368(a) of the Code,
          and the Acquiring Fund and the Acquired Fund will each 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 on the
          receipt of the assets of the Acquired Fund solely in exchange for the
          Acquiring Fund Shares and the assumption by the Acquiring Fund of the
          liabilities of the Acquired Fund;

     (c)  except for gain or loss regularly attributable to the termination of
          the Acquired Fund's taxable year, no gain or loss will be recognized
          by the Acquired Fund upon the transfer of the Acquired Fund's assets
          to the Acquiring Fund in exchange for the Acquiring Fund Shares and
          the assumption by the Acquiring Fund of the liabilities of the
          Acquired Fund or upon the distribution of the Acquiring Fund Shares to
          the Acquired Fund Shareholders in exchange for their Acquired Fund
          Shares;

     (d)  no gain or loss will be recognized by the Acquired Fund Shareholders
          upon the exchange of their Acquired Fund Shares for the Acquiring Fund
          Shares;

     (e)  the aggregate tax basis of the Acquiring Fund Shares received by each
          of the Acquired Fund Shareholders pursuant to the Reorganization will
          be the same as the aggregate tax basis of the Acquired Fund Shares
          held by such shareholder immediately prior to the Reorganization, and
          the holding period of the Acquiring Fund Shares to be received by each
          Acquired Fund Shareholder will include the period during which the




          Acquired Fund Shares exchanged therefor were held by such shareholder
          (provided that such Acquired Fund Shares were held as capital assets
          on the date of the Reorganization); and

     (f)  except for assets which may be revalued as a consequence of a
          termination of the Acquired Fund's taxable year, the tax basis of the
          Acquired Fund's assets 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 and the holding period of the assets of the
          Acquired Fund in the hands of the Acquiring Fund will include the
          period during which those assets were held by the Acquired Fund.

Our opinion is based upon the accuracy of the certifications, representations
and warranties and satisfaction of the covenants and obligations contained in
the Reorganization Agreement, the Tax Representation Letters and in the various
other documents related thereto. Our opinion may not be relied upon if any of
such certifications, representations or warranties are not accurate or if any of
such covenants or obligations are not satisfied in all material respects.

Very truly yours,