March 21,1996


FIserv, Inc.
255 FIserv Drive
Brookfield, WI 53045

FIserv, Inc.
Registration Statement on Form S-3


Dear Sirs:

     I have  acted as  counsel to  FIserv,   Inc., a  Wisconsin   corporation
("FIserv"), in  connection with   its Registration  Statement   on Form   S-3
(the "Registration Statement"), filed under the Securities  Act of 1933  (the
"Act"), relating to the  proposed  resales of  up  to 70,096  shares  of  its
Common    Stock,  $.01   par  value  (the   "Shares"),  by  certain   Selling
Shareholders.

     In that connection, I have examined  originals, or copies certified   or
otherwise identified  to   our satisfaction  of   such  documents,  corporate
records and other instruments as I  have deemed necessary or appropriate  for
purposes   of  this opinion,  including  the Articles  of  Incorporation,  as
amended, and  By-Laws, as amended, of FIserv.

     Based upon the foregoing, I am of the opinion that:

     1.  The Company has been duly  organized  and is validly existing as   a
corporation under the laws of the State of Wisconsin.

     2.  The Shares  have been duly authorized   and are validly issued   and
fully paid and nonassessable.

     I hereby consent  to the  use of  this opinion   as an  exhibit to   the
Registration Statement and to the reference   to me under "Legal Matters"  in
the Prospectus comprising a part of  the Registration Statement.   By  giving
the foregoing consent,  I do not  admit that I  come within  the category  of
persons  whose consent  is required  under Section 7 of the Act.

Very truly yours,


/S/ CHARLES W. SPRAGUE
Charles W. Sprague
Executive Vice President,
General Counsel and Secretary