May 30, 1997



Fiserv, Inc.
255 Fiserv Drive
Brookfield, WI 53045


Fiserv, Inc.
Registration Statements on Form S-8


Dear Sirs:

                  I  have  acted  as  counsel  to  Fiserv,   Inc.,  a  Wisconsin
corporation (the "Company"),  in connection with its Registration  Statements on
Form S-8 (the "Registration Statement"),  filed under the Securities Act of 1933
(the "Act"),  relating to the proposed  issuance  pursuant to the Fiserv, Inc.
Stock Option  Plan for BHC, the Fiserv, Inc. Long Term  Incentive  Plan for BHC
and the Fiserv, Inc Stock  Option Plan for BHC Directors, as well as pursuant to
the BHC Financial, Inc. Retirement and Savings Plan of shares of Common Stock,
$.01 par value (the "Shares"), of the Company.

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

                  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, validly issued, 
fully paid and nonassessable.

                  I hereby  consent to the use of this  opinion as an exhibit to
each of the  Registration  Statements  and to the  reference  to me under "Legal
Matters" in each Prospectus comprising a part of the Registration Statements. 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