EXHIBIT 31-2
                                 CERTIFICATIONS

I, Thomas J. Riha, certify that:

1. I have  reviewed  this  annual  report on Form 10-K of WNC HOUSING TAX CREDIT
   FUND VI, L.P., SERIES 13;

2. Based on my  knowledge,  this annual  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 annual report;

3. Based  on  my  knowledge,  the  financial  statements,  and  other  financial
   information  included  in this annual  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-15e and 15d-15e) for the registrant and we 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 annual report is being prepared;

   (b)  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

   (c)  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  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(s) 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 the  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  control  over  financial  reporting  which  are
        reasonably  likely to adversely affect in  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
        control over financial reporting.

Date:  July 14, 2006





/s/ Thomas J. Riha
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Senior Vice-President - Chief Financial Officer of WNC & Associates, Inc.