POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby constitutes and appoints
Sally  F.  Dornaus  and  Michael  Treisman  as the undersigned's true and lawful
attorney-in-fact to:

      (1)   execute  for  and on behalf of the undersigned, in the undersigned's
            capacity as an officer, director and/or more than 10% stockholder of
            Bain Capital Specialty Finance, Inc. (the "Company"), Forms 3, 4 and
            5  (including  amendments thereto) with respect to securities of the
            Company  in accordance with section 16(a) of the Securities Exchange
            Act of 1934 and the rules thereunder (the "Exchange Act");

      (2)   do and perform any and all acts for and on behalf of the undersigned
            which may be necessary or desirable to complete and execute any such
            Form  3,  4  or 5 (or amendments thereto), and timely file such form
            with  the  United  States Securities and Exchange Commission and any
            stock exchange or similar authority; and

      (3)   take  any other action of any type whatsoever in connection with the
            foregoing  which, in the opinion of such attorney-in-fact, may be of
            benefit  to,  in  the  best interest of, or legally required by, the
            undersigned, in connection with filing such Form 3, 4 or 5, it being
            understood  that  the documents executed by such attorney-in-fact on
            behalf  of  the undersigned pursuant to this Power of Attorney shall
            be  in such form and shall contain such terms and conditions as such
            attorney-in-fact may approve in such attorney-in-fact's discretion.

The  undersigned  hereby  grants  to  each  such attorney-in-fact full power and
authority  to  do  and perform any and every act and thing whatsoever requisite,
necessary,  or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could  do  if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact shall lawfully do
or  cause  to  be  done  by  virtue of this Power of Attorney and the rights and
powers  herein granted. The undersigned acknowledges that such attorney-in-fact,
in  serving in such capacity at the request of the undersigned, is not assuming,
nor is the Company assuming, any of the undersigned's responsibilities to comply
with  section  16  of the Exchange Act, and that this Power of Attorney does not
relieve   the   undersigned   from   responsibility   for  compliance  with  the
undersigned's  obligations  under  the  Exchange  Act.  The  undersigned further
acknowledges  that this Power of Attorney authorizes, but does not require, such
attorney-in-fact to act in his discretion on information provided to him without
independent verification of such information.

This  Power  of  Attorney  shall  remain  in  full  force  and  effect until the
undersigned  is  no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's  holdings of and transactions in securities issued by the Company,
unless  earlier  revoked by the undersigned in a signed writing delivered to the
foregoing attorney-in-fact.

IN  WITNESS  WHEREOF,  the  undersigned  has caused this Power of Attorney to be
executed as of this 16th day of August, 2016.

Signature: /s/ Ranesh Ramanathan
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Name:      Ranesh Ramanathan
           ----------------------------

Title:     Secretary
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Date:      August 16, 2016
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