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 First Quarter Ended March 31, 2005

Irwin,  Pennsylvania,  April 27, 2005; IBT Bancorp,  Inc. (the  "Company"),  the
holding  company of Irwin Bank and Trust Company,  today  announced  earnings of
$2,324,000  or $.78 per  diluted  share for the  quarter  ended  March 31,  2005
compared  to  $2,353,000  or $.78 per  diluted  share  for the  comparable  2004
quarter.  The Company's first quarter  results were  negatively  affected by the
recent increase in short-term  interest rates which has resulted in a flattening
of the yield curve. Pressure to increase interest rates paid on deposits has not
been  accompanied by significant  increases in the rates charged for loans.  The
pressure on the net interest  margin felt in 2004 continues in the first quarter
of 2005.

For the three  months  ended  March 31,  2005 net  interest  income  before  the
provision for loan losses increased to $5,611,000 from $5,458,000.  However, the
mix of the loan  portfolio  and losses on several  large  loans  during the last
quarter  of 2004  required  an  increase  in the  provision  for loan  losses to
$300,000  for the  quarter  ended March 31,  2005  compared to $125,000  for the
comparable 2004 quarter.  Total non-interest  income increased to $1,625,000 for
the quarter  ended March 31, 2005  compared  to  $1,348,000  for the  comparable
quarter  in 2004  as a  result  of  increases  in  service  fees on  transaction
accounts.  Total  non-interest  expense for the quarter ended March 31, 2005 was
$3,710,000  compared to $3,650,000  for the comparable  quarter in 2004.  Income
taxes  increased to $902,000 for the quarter  ended March 31, 2005 from $678,000
for the  comparable  quarter in 2004 as a result of increases in taxable  income
due to a decrease in deductions  available for income taxes for exercised  stock
options and an increase in the provision for loan losses.  These factors  caused
the  Company's  effective  tax rate to increase to 28% for the first  quarter of
2005 compared to 22% for the prior-year period.

President and CEO Charles G. Urtin  stated,  "Aggressive  pricing  policies from
some of our  competitors  has put  additional  pressure  on the rates we pay for
deposits.  Although net income was  relatively  flat on a comparable  quarter to
quarter  basis we are pleased in the growth of net  interest  income  before the
provision for loan losses as well as the containment of  non-interest  expenses.
Increases in the  provision  for loan losses,  increases in income taxes and the
reduction  in security  gains during the first  quarter of 2005  resulted in the
flat performance."



Total assets of the Company were  $677,721,000  at March 31, 2005 as compared to
$675,857,000 at December 31, 2004. Total loans declined to $429,308,000 at March
31, 2005 from $436,548,000 at December 31, 2004. The bank experienced payoffs on
two large  commercial  loans  during  the  first  quarter  of 2005.  Investments
decreased  to  $190,929,000  at March 31, 2005 as compared  to  $191,208,000  at
December 31, 2004 due to principal  repayments  on mortgage  backed  securities.
Total deposits were  $523,309,000  at March 31, 2005 as compared to $526,217,000
at December  31,  2004.  Reductions  in  deposits  were the result of changes in
balances in demand  accounts  resulting  from the  ordinary  course of business.
Advances from the Federal Home Loan Bank of Pittsburgh  decreased to $69,866,000
at March 31, 2005 as compared to  $70,265,000  at December 31, 2004. The Company
has several  amortizing  advances  and did not add any new  advances  during the
quarter.

Irwin Bank and Trust Company is a state chartered  commercial bank that conducts
its business from its main office located in Irwin,  Pennsylvania,  seven branch
offices, a loan center, a trust department and five 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)

                                               March 31,        December 31,
                                           ------------------ ------------------
                                                 2005               2004
                                           ------------------ ------------------
Total Assets                                $       677,721    $      675,857
Securities available for sale               $       190,929    $      191,208
Federal Home Loan Bank stock, at cost       $         5,289    $        5,683
Total loans, net                            $       429,308    $      436,548
Total liabilities                           $       618,158    $      616,014
Interest bearing deposits                   $       441,783    $      438,968
Non-interest bearing deposits               $        81,525    $       87,248
FHLB advances                               $        69,866    $       70,265
Shareholders' equity                        $        59,563    $       59,843



                                                         Three Months Ended
                                                              March 31,
                                                  ------------------------------
                                                         2005              2004
                                                   ----------        ----------
Interest Income                                    $    8,738             8,310
Interest Expense                                        3,127             2,852
                                                   ----------        ----------
     Net interest income                                5,611             5,458
Provision for loan losses                                 300               125
                                                   ----------        ----------
Net interest income after
     provision for loan losses                          5,311             5,333
Non-interest income                                     1,625             1,348
Non-interest expense                                    3,710             3,650
                                                   ----------        ----------

Income before income taxes                              3,226             3,031
Income tax expense                                        902               678
                                                   ----------        ----------
Net income                                         $    2,324        $    2,353
                                                   ==========        ==========

Per Share Data:

Basic earnings per share                           $     0.79        $     0.79
Diluted earnings per share                         $     0.78        $     0.78
Dividends per share                                $     0.46        $     0.40

Selected Ratios (annualized):
Return on Average Assets                                 1.38%             1.48%
Return on Average Equity                                15.41%            17.54%
Net Interest Spread                                      3.13%             3.22%
Net Interest Margin                                      3.54%             3.63%


                                                    March 31,      December 31,
                                                  -------------  ---------------
Additional Per Share Data:                            2005             2004
                                                  -------------  ---------------

Shares Outstanding                                  2,955,455          2,955,455
Book Value per Share                               $    20.15         $    20.25