EXHIBIT 31.2
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                               CFO CERTIFICATION
      PURSUANT TO RULE 13A-14 (A) OF THE SECURITIES EXCHANGE ACT OF 1934

I, Peter Hanrahan, Vice-President, Finance and Chief Financial Officer, certify
that:

1.   I have  reviewed  this  annual  report on Form 40-F of  Advantage  Energy
     Income Fund;

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 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 issuer as of, and for, the periods presented in this report;

4.   The  issuer'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)) for the issuer 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
          issuer, 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 issuer'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 issuer's internal control
          over financial  reporting that occurred during the period covered by
          the annual  report that has  materially  affected,  or is reasonably
          likely to  materially  affect,  the issuer's  internal  control over
          financial reporting.

5.   The issuer's other certifying officer and I have disclosed,  based on our
     most recent evaluation of internal control over financial  reporting,  to
     the issuer's  auditors and the audit  committee of the issuer'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  the  issuer'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 issuer's internal
          control over financial reporting.


     Date:  March 7, 2006                  /s/ Peter Hanrahan
                                           -----------------------------------
                                           Peter Hanrahan
                                           Vice-President, Finance and
                                           Chief Financial Officer of
                                           Advantage Oil & Gas Ltd. on behalf
                                           of Advantage Energy Income Fund