BANKFINANCIAL
                                                                    Corporation


FOR IMMEDIATE RELEASE
- ---------------------

           BankFinancial Corporation to Host Conference Call on May 17

     Burr Ridge,  Illinois - (May 8, 2006)  BankFinancial  Corporation (Nasdaq -
BFIN) will review first  quarter  2006 results in a conference  call and webcast
for  stockholders  and analysts on Wednesday,  May 17, 2006 at 9:30 a.m. Central
time.

     The  conference  call may be  accessed  by calling  866-831-6247  and using
participant  passcode  61601563.  The  conference  call  will be  simultaneously
webcast at  www.bankfinancial.com,  "Stockholder  Information"  page.  For those
persons  unable to  participate  in the  conference  call,  the webcast  will be
archived  through  5:00  p.m.  CST on May  31,  2006 on our  website.  A copy of
BankFinancial  Corporation's first quarter 2006 Earnings Release is scheduled to
be available on our website, under the "Stockholder  Information" section on the
evening of May 15, 2006.

     BankFinancial Corporation is the holding company for BankFinancial, F.S.B.,
a full-service,  community-oriented savings bank providing financial services to
individuals,  families and businesses  through 18 full-service  banking offices,
located in Cook, DuPage, Lake and Will Counties, Illinois. At December 31, 2005,
BankFinancial  Corporation  had total assets of $1.6 billion,  total deposits of
$1.1 billion and  stockholders'  equity of $329 million.  The  company's  common
stock trades on the Nasdaq Stock Market under the symbol BFIN.





For Further Information
Contact:  Shareholder, Analyst and Investor Inquiries:   Media Inquiries:
          Terence C. Wise                                Gregg T. Adams
          Vice President - Investor Relations            Executive Vice
                                                         President - Marketing
                                                         & Sales
          BankFinancial Corporation                      BankFinancial
                                                         Corporation
          Telephone: 630-242-7151                        Telephone: 630-242-7234