PRESS RELEASE
FOR IMMEDIATE RELEASE

FOR FURTHER INFORMATION CONTACT:                 CHARLES G. URTIN, PRESIDENT/CEO
                                                 TELEPHONE: 724-863-3100
                                                 www.myIrwinBank.com


                                IBT BANCORP, INC.
               ANNOUNCES OPERATING RESULTS FOR THE SECOND QUARTER

IRWIN,   PENNSYLVANIA,   JULY  28,  2005;  IBT  Bancorp,  Inc.  (AMEX:IRW)  (the
"Company"),  the holding company of Irwin Bank & Trust Company,  today announced
the results of its  operations  for the three and six months  periods ended June
30,  2005.  Net  income  for the three  month  period  ended  June 30,  2005 was
$2,326,000 or $.78 per diluted share  compared to $2,088,000 or $.69 per diluted
share for the comparable  2004 quarter.  For the six month period ended June 30,
2005 net income was $4,650,000 or $1.56 per diluted share compared to $4,441,000
or $1.47 per diluted share for the  comparable  period in 2004.  For the quarter
ended June 30, 2005 net interest income increased $40,000 or .72%,  non-interest
income increased  $441,000 or 33%, and non-interest  expense increased  $196,000
over the  quarter  ended June 30,  2004.  The nominal  increase in net  interest
income is a result of an easing of the pressure on the net  interest  margin and
asset growth.  Non-interest  income increased as a result of more fees earned on
transaction  accounts and a one-time  gain  recorded from the sale of a property
classified as other real estate.  Non-interest  expenses increased to $4,064,000
for the quarter ended June 30, 2005 compared to  $3,868,000  for the  comparable
quarter in 2004.  Salaries increased $111,000 as a result of merit increases and
additions to staff.  For the six months ended June 30, 2005 net interest  income
increased $193,000 due to asset growth.  Non-interest  income increased $717,000
or 26.70% due to the increase in service  fees of $591,000  offset by a decrease
in the gain  realized on the sale of  securities  of $129,000  and  increases in
other  income of  $256,000.  Non-interest  expenses  increased  $257,000  due to
increase in salaries of $189,000  caused by merit  increases  and  additions  to
staff. Other non-interest expenses increased nominally.

President and CEO Charles G. Urtin stated, "We are pleased to report an increase
in earnings.  Although a flattening yield curve and rising  short-term  interest
rates have put continued  pressure on net interest margins at banks and thrifts,
we have seen our net interest  margin begin to  stabilize.  We will  continue to
manage the loan and  investment  portfolios to maximize  yield,  within our risk
tolerances,  and  manage  the cost of  deposits  through a  disciplined  pricing
strategy.  The increase in non-interest  income is adding to the bottom line and
control of non-interest  expenses, as well as a decrease in the effective income
tax rate has had a positive influence on the net income for the quarter.  We may
experience  continued  negative  pressure on the net interest  margin unless the
yield  curve  becomes  steeper  but we will  continue  to manage the company for
success in the long-term."

Total  assets of the  Company  increased  to  $681,179,000  at June 30,  2005 as
compared to  $675,857,000  at December  31, 2004.  Total net loans  decreased to
$428,135,000 at June 30, 2005 from  $436,548,000 at December 31, 2004. Two large
commercial  loans were  repaid  earlier in the year.  Investments  increased  to
$206,080,000  at June 30, 2005 as compared to $191,208,000 at December 31, 2004.
Total deposits were $517,188,000 at June 30, 2005 as compared to $526,216,000 at
December 31, 2004.


Irwin Bank & Trust Company is a state  chartered  commercial  bank that conducts
its business  from its main office  located in Irwin,  Pennsylvania,  six branch
offices,  two loan centers,  a trust  department and four  supermarket  branches
located in the Pennsylvania  counties of Westmoreland and Allegheny.  The Bank's
deposits  are insured up to the  maximum  legal  amount by the  Federal  Deposit
Insurance  Corporation.  The  Company's  common  stock is traded on the American
Stock  Exchange  under the symbol "IRW".  For more  information  please visit at
www.myirwinbank.com.

Statements  contained in this news release  which are not  historical  facts are
forward-looking  statements  as the term is  defined in the  Private  Securities
Litigation  Reform Act of 1995. Such  forward-looking  statements are subject to
risks and  uncertainties  which could cause actual results to differ  materially
from those currently anticipated due to a number of factors,  which include, but
are not limited to, factors discussed in documents filed by the Company with the
Securities and Exchange Commission from time to time.


IBT Bancorp, Inc.
Selected Financial Data (Unaudited)

(Dollars in Thousands, except per share data)
                                                    June 30,        December 31,
                                                ----------------- --------------
                                                      2005              2004
                                                ----------------- --------------
Total Assets                                     $     681,179     $     675,857
Securities available for sale                    $     206,080     $     191,208
Federal Home Loan Bank stock, at cost            $       5,094     $       5,683
Total loans, net                                 $     428,135     $     436,548
Total liabilities                                $     619,844     $     616,014
Interest bearing deposits                        $     437,021     $     438,968
Non-interest bearing deposits                    $       80,167    $      87,248
FHLB advances                                    $       69,598    $      70,265
Shareholders' equity                             $       61,335    $      59,843





                                                    Three Months Ended                    Six Months Ended
                                                         June 30,                             June 30,
                                           ----------------------------------      -----------------------------
                                                 2005                2004               2005            2004
                                           ---------------    ---------------      ------------    -------------
                                                                                       
Interest Income                            $         8,814              8,372      $     17,552    $      16,682
Interest Expense                                     3,280              2,878             6,407            5,730
                                           ---------------    ---------------      ------------    -------------
     Net interest income                             5,534              5,494            11,145           10,952
Provision for loan losses                              300                125               600              250
                                           ---------------    ---------------      ------------    -------------
Net interest income after
     provision for loan losses                       5,234              5,369            10,545           10,702
Non-interest income                                  1,778              1,337             3,402            2,685
Non-interest expense                                 4,064              3,868             7,774            7,517
                                           ---------------    ---------------      ------------    -------------

Income before income taxes                           2,948              2,838             6,173            5,870
Income tax expense                                     622                750             1,523            1,429
                                           ---------------    ---------------      ------------    -------------

Net income                                 $         2,326    $         2,088      $      4,650    $       4,441
                                           ===============    ===============      ============    =============

Per Share Data:
Basic earnings per share                   $          0.79    $          0.70      $       1.58    $        1.49
Diluted earnings per share                 $          0.78    $          0.69      $       1.56    $        1.47
Dividends per share                        $          0.46    $          0.40      $       0.92    $        0.80

Selected Ratios (annualized):
Return on Average Assets                              1.37%              1.28%             1.37%            1.38%
Return on Average Equity                             15.61%             13.46%            15.16%           14.36%
Net Interest Spread                                   3.05%              3.13%             3.10%            3.18%
Net Interest Margin                                   3.47%              3.54%             3.50%            3.59%


                                               June 30,          December 31,
                                          ---------------     ------------------
Additional Per Share Data:                       2005                2004
                                          ---------------     ------------------
Shares Outstanding                             2,955,455          2,955,455
Book Value per Share                       $       20.75      $       20.25