[BankFinancial Corporation Logo]

FOR IMMEDIATE RELEASE

     BankFinancial Corporation Extends and Expands Share Repurchase Program

     Burr Ridge, Illinois - (March 26, 2007) BankFinancial Corporation (Nasdaq -
BFIN)  announced  today that its Board of Directors has extended the  expiration
date of the Company's current share repurchase authorization from March 31, 2007
until  September 30, 2007,  and has increased by 1,158,759  shares the number of
shares  that  can be  repurchased  in  accordance  with the  authorization.  The
increase  represents  approximately  5% of the Company's  issued and outstanding
shares of common stock as of March 23, 2007.  As of March 23, 2007,  the Company
had repurchased 2,109,274 shares of its common stock out of the 2,446,625 shares
that  had been  previously  authorized  for  repurchase.  As a  result  of these
actions,  the Company is currently  authorized to repurchase 1,496,110 shares of
common stock.

     The  authorization  permits  shares  to be  repurchased  in open  market or
negotiated transactions, and pursuant to any trading plan that may be adopted in
accordance with Rule 10b5-1 of the Securities and Exchange Commission.

     The authorization will be utilized at management's  discretion,  subject to
the  limitations  set  forth  in Rule  10b-18  of the  Securities  and  Exchange
Commission  and  other  applicable  legal  requirements,  and to price and other
internal limitations established by the Company's Board of Directors.

     The authorization  will expire on September 30, 2007, and may be suspended,
terminated or modified at any time prior to that date for any reason,  including
market  conditions,  the  cost  of  repurchasing  shares,  the  availability  of
alternative  investment  opportunities,  liquidity,  and  other  factors  deemed
appropriate.  These  factors  may also  affect  the  timing  and amount of share
repurchases.

     The authorization  does not obligate the Company to purchase any particular
number of shares. Any shares that are repurchased  pursuant to the authorization
may be utilized to fund  grants  that are made under the Equity  Incentive  Plan
that the Company's  stockholders  approved at the Company's 2006 Annual Meeting,
and for other corporate purposes.

     Share   repurchases   will  be  funded  from  available   working  capital,
supplemented if deemed  necessary or desirable with dividends from the Company's
principal   subsidiary   that  will  be  subject  to   regulatory   approval  or
non-objection.

     In addition,  the Company  announced  today that its 2007 Annual Meeting of
Shareholders will be held on June 26, 2007 at 11:00 AM, Chicago,  Illinois time.
The location of the meeting  will be the  Willowbrook  Holiday  Inn,  7800 South
Kingery Highway (Route 83), Willowbrook, IL 60527.

     The  Company  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, 2006,
the Company had total assets of $1.613  billion,  total loans of $1.330 billion,
total deposits of $1.130 billion and stockholders' equity of $326 million. As of
March 23, 2007, the Company had 23,175,176 million issued and outstanding shares
of common stock.  The Company's  common stock trades on the Nasdaq Global Market
under the symbol BFIN.

     "Forward-looking   statements"   as  defined  in  the  Private   Securities
Litigation  Reform Act of 1995 may be  included  in this  release.  A variety of
factors could cause  BankFinancial  Corporation's  actual results to differ from
those  expected at the time of this  release.  Investors  are urged to carefully
review and consider the various disclosures made by BankFinancial Corporation in
its  periodic  reports  filed  with  the  Securities  and  Exchange  Commission,
including  the risk factors and other  information  disclosed  in  BankFinancial
Corporation's  Annual  Report on Form 10-K for the most  recently  ended  fiscal
year.  Copies of these filings are available at no cost on the SEC's web site at
http://www.sec.gov      or     on      BankFinancial's      web      site     at
http://www.bankfinancial.com.

For Further Information
Contact:      Shareholder, Analyst
              and Investor Inquiries:                 Media Inquiries:
              Elizabeth A. Doolan,                    Gregg T. Adams,
              Senior Vice President                   Executive Vice President-
              BankFinancial Corporation               Marketing & Sales
              Telephone: 630-242-7151                 BankFinancial Corporation
                                                      Telephone: 630-242-7234