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 Third Quarter

Irwin,  Pennsylvania,  October 27, 2005;  IBT Bancorp,  Inc.  (AMEX:  IRW),  the
holding  company of Irwin Bank & Trust Company,  today  announced its results of
operations  for the three and nine months ended  September 30, 2005.  Net income
for the  three-month  period ended September 30, 2005 was $2,038,000 or $.68 per
diluted  share  compared  to  $2,161,000  or  $.72  per  diluted  share  for the
comparable 2004 quarter. For the nine-month period ended September 30, 2005, net
income was $6,688,000 or $2.24 per diluted share compared to $6,602,000 or $2.20
per diluted  share for the  comparable  period in 2004.  For the  quarter  ended
September  30, 2005,  net interest  income,  after the provision for loan losses
decreased $192,000 or 3.55% while non-interest  income increased $369,000 or 29%
from the comparable  2004 quarter.  The decline in net interest income after the
provision  for loan loss is due to an increase in the  provision for loan losses
of $260,000.  Net interest  income before the provision for loan losses actually
increased $68,000 or 1.26% over the comparable  quarter in 2004. The increase in
non-interest  income is due  primarily  to an  increase  in  service  charges of
$282,000 or 43.6% compared to the comparable 2004 quarter. Non-interest expenses
increased to  $4,135,000  for the quarter  ended  September 30, 2005 compared to
$3,715,000  for the  comparable  2004 quarter due to increased  staffing  costs.
Other non-interest expenses increased nominally.  The provision for income taxes
decreased  $120,000  for the quarter or 15.2% due to a decline in the  Company's
effective  tax rate,  which is  primarily  the result of  increases  in tax free
investment  and loan income.  For the nine months ended  September 30, 2005, net
interest income  increased  $262,000 but the provision for loan losses increased
$610,000  causing the net interest income after the provision for loan losses to
decrease $348,000 or 2.16%. The increase in the loan loss provision reflects the
historical  loss experience and recognition of the risk elements within the loan
portfolio.   Non-interest  income  increased  $1,086,000,   or  27.5%  over  the
comparable  quarter in 2004 due  primarily  to an  increase  in service  fees of
$873,000.  Non-interest expenses increased $677,000 due to increases in employee
salaries which are the result of merit increases and increases in staff.





President and CEO Charles G. Urtin stated, " While we did not report an increase
in third quarter 2005 earnings over 2004, I am pleased to report a slight
increase in 2005 year to date earnings over 2004. Our net interest income has
increased during 2005 and non-interest income continues to increase and impact
favorably on net income. "

Total  net  loans  were  $435,890,000  at  September  30,  2005 as  compared  to
$436,548,000  at December 31, 2004.  Investments  increased to  $200,285,000  at
September  30, 2005 as compared to  $191,208,000  at December  31,  2004.  Total
deposits  decreased  to  $520,419,000  at  September  30,  2005 as  compared  to
$526,216,000  at year end due mainly to an  additional  $23.5 million that swept
into overnight  repurchase  agreements at September 30, 2005.  Advances from the
Federal Home Loan Bank of Pittsburgh  decreased to  $69,059,000 at September 30,
2005 as compared to  $70,265,000  at December  31, 2004 due to the  repayment of
amortizing advances. Repurchase agreements nearly doubled to $38,686,000.

Irwin Bank and 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
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)


                                            September 30,      December 31,
                                          ------------------ ------------------
                                                2005               2004
                                          ------------------ ------------------
Total Assets                                 $   694,643        $  675,857
Securities available for sale                $   200,285        $  191,208
Federal Home Loan Bank stock, at cost        $     4,914        $    5,683
Total loans, net                             $   435,890        $  436,548
Total liabilities                            $   632,716        $  616,014
Interest bearing deposits                    $   436,706        $  438,968
Non-interest bearing deposits                $    83,713        $   87,248
FHLB advances                                $    69,059        $   70,265
Shareholders' equity                         $    61,927        $   59,843


                                      Three Months Ended     Nine Months Ended
                                                    September 30,
                                      -------    -------    -------    -------
                                       2005       2004       2005       2004
                                      -------    -------    -------    -------

Interest Income                       $ 9,016    $ 8,402    $26,569    $25,084
Interest Expense                        3,516      2,970      9,923      8,700
                                      -------    -------    -------    -------
     Net interest income                5,500      5,432     16,646     16,384
Provision for loan losses                 300         40        900        290
                                      -------    -------    -------    -------
Net interest income after
     provision for loan losses          5,200      5,392     15,746     16,094
Non-interest income                     1,639      1,270      5,041      3,955
Non-interest expense                    4,135      3,715     11,909     11,232
                                      -------    -------    -------    -------

Income before income taxes              2,704      2,947      8,878      8,817
Income tax expense                        666        786      2,190      2,215
                                      -------    -------    -------    -------

Net income                            $ 2,038    $ 2,161    $ 6,688    $ 6,602
                                      =======    =======    =======    =======

Per Share Data:
Basic earnings per share              $  0.69    $  0.73    $  2.26    $  2.23
Diluted earnings per share            $  0.68    $  0.72    $  2.24    $  2.20
Dividends per share                   $  0.46    $  0.40    $  1.38    $  1.20

Selected Ratios (annualized):
Return on Average Assets                 1.20%      1.30%      1.31%      1.35%
Return on Average Equity                13.27%     15.20%     14.58%     14.72%
Net Interest Spread                      2.96%      3.08%      3.04%      3.15%
Net Interest Margin                      3.41%      3.46%      3.47%      3.55%


                                          September 30,      December 31,
                                        ------------------ ------------------
Additional Per Share Data:                    2005               2004
                                        ------------------ ------------------
Shares Outstanding                           2,955,455         2,955,455
Book Value per Share                         $   20.95         $   20.25