EXHIBIT 23.1

                         Consent of Rehmann Robson, P.C.

We consent to the incorporation by reference in the Registration Statement on
Form S-8 pertaining to the IBT Bancorp, Inc. Stockholder Dividend Reinvestment
and Employee Stock Purchase Plan of our report dated January 31, 2003 relating
to our audits of the consolidated financial statements of IBT Bancorp, Inc. for
the years ended December 31, 2002, 2001 and 2000.


                                /s/Rehmann, Robson, P.C.
                                Rehmann Robson, P.C.
                                Saginaw, Michigan
                                June 24, 2003