Exhibit 31.2
                                CERTIFICATION

 I, Kevin D. Williams, certify that:

 1. I  have  reviewed  this annual  report  on  Form 10-K  of  Jack  Henry  &
 Associates, Inc.;

 2. Based on my knowledge, this report does not contain any untrue  statement
 of a material fact or omit  to state a material  fact necessary to make  the
 statements made, in light of the  circumstances under which such  statements
 were made, not misleading with respect to the period covered by this report;

 3. Based  on my  knowledge, the  financial statements,  and other  financial
 information included in this report, fairly present in all material respects
 the  financial  condition,  results  of operations  and  cash  flows  of the
 registrant as of, and for, the periods presented in this annual report;

 4. The  registrant's other  certifying officer  and  I are  responsible  for
 establishing and maintaining disclosure controls and procedures (as  defined
 in Exchange Act  Rules 13a-15(e) and  15d-15(e)) and  internal control  over
 financial reporting (as  defined in Exchange  Act Rules  13a-15(f) and  15d-
 15(f)) for the registrant and have:

   a) Designed  such  disclosure controls  and  procedures,  or  caused  such
   disclosure  controls and procedures to be designed under our  supervision,
   to  ensure that material information relating to the registrant, including
   its  consolidated subsidiaries, is made known to us by others within those
   entities,  particularly during the period in  which this  report is  being
   prepared;

   b) Designed such internal control over financial reporting, or caused such
   internal control  over  financial  reporting  to  be  designed  under  our
   supervision,  to provide reasonable assurance regarding the reliability of
   financial reporting  and  the  preparation  of  financial  statements  for
   external  purposes  in  accordance  with  generally  accepted   accounting
   principles;

   c) Evaluated the effectiveness of the registrant's disclosure controls and
   procedures  and  presented  in  this  report  our  conclusions  about  the
   effectiveness  of the disclosure controls and procedures, as of the end of
   the period covered by this report based on such evaluation; and

   d)  Disclosed in this  report  any  change in  the  registrant's  internal
   control  over financial reporting that  occurred during  the  registrant's
   most recent fiscal quarter, (the registrant's fourth fiscal quarter in the
   case  of an annual report) that has  materially affected, or is  reasonably
   likely  to  materially  affect,  the  registrant's  internal  control over
   financial reporting; and

 5. The registrant's other certifying officer and I have disclosed,  based on
 our most recent evaluation of internal control over financial reporting,  to
 the  registrant's auditors and the audit committee of registrant's  board of
 directors (or persons performing the equivalent functions):

   a)  All significant deficiencies and material  weaknesses in the design or
   operation   of  internal  controls  over  financial  reporting  which  are
   reasonably likely to adversely affect the registrant's ability to  record,
   process, summarize and report financial information ; and

   b)  Any fraud, whether or not material,  that involves management or other
   employees  who  have  a  significant role  in  the  registrant's  internal
   controls over financial reporting.


 Date   September 12, 2006
                                             /s/ Kevin D. Williams
                                             -------------------------------
                                             Kevin D. Williams
                                             Chief Financial Officer