EXHIBIT 5



                                SHANLEY & FISHER, P.C.
                                  131 Madison Avenue
                          Morristown, New Jersey  07962-1979
                                    (973) 285-1000
                                           

                                   October 30, 1997
                                           





The BISYS Group, Inc.
Overlook at Great Notch
150 Clove Road
Little Falls, New Jersey  07424

    Re:  The BISYS Group, Inc.


Gentlemen:

    We have acted as special counsel to The BISYS Group, Inc., a Delaware 
corporation (the "Company"), in connection with the preparation and filing 
under the Securities Act of 1933, as amended (the "Act"), of a Registration 
Statement on Form S-8 (the "Registration Statement") relating to the offer 
and sale of up to 91,080 shares of the Company's common stock, par value $.02 
per share (the "Shares"), issuable pursuant to the exercise of certain stock 
options ("Stock Options") held by employees of the Company who were former 
employees of Charter Systems, Inc. ("Charter").  Said Stock Options were 
assumed by the Company in connection with the Company's acquisition of 
Charter by merger.

    For purposes of this opinion, we have examined originals or copies, 
certified or otherwise, identified to our satisfaction, of the Registration 
Statement, together with exhibits filed as a part thereof, and all such other 
documents, records, certificates, including certificates of public officials, 
and other instruments as we have deemed necessary or appropriate.

    Based upon the foregoing, we are of the opinion that:

    1.   The Company has been duly incorporated and is validly existing under
         the laws of the State of Delaware.

    2.   The Shares have been duly authorized and, when sold in the manner and
         for the consideration contemplated by



The BISYS Group, Inc.
October 30, 1997
Page 2



         the Stock Options and the Registration Statement, will be validly
         issued, fully paid and non-assessable.

    We hereby consent to the filing of this opinion as an exhibit to the 
Registration Statement and to the use of our name therein.  By giving the 
foregoing consent, we do not admit that we are persons whose consent is 
required under Section 7 of the Act.

                                  Very truly yours,
                                  SHANLEY & FISHER, P.C.