EXHIBIT 99.1

                     MANESS APPOINTED TO BOARD OF DIRECTORS

Dennis P. Angner, President and CEO of IBT Bancorp, announced the appointment of
David J. Maness to the IBT Bancorp's Board of Directors, effective June 1, 2004.

Mr. Maness is currently a member of the Board of Directors of Isabella Bank and
Trust and serves on the Audit and Trust Committees. He is also the Chairman of
Financial Group Information Services (FGIS), a subsidiary of IBT Bancorp.

Mr. Maness is the President of Maness Petroleum Corporation and a lifelong
resident of the Mount Pleasant area. He served on the Mt. Pleasant Public
Schools Board of Education from 1996 to 2002 including two years as the Board
President. Mr. Maness also serves as a Director of the Michigan Oil and Gas
Association and a Director of Terrasciences, a privately held geologic software
company. He is a member of many professional societies including the Society of
Exploration Geophysicists and the American Association of Petroleum Geologists.
Mr. Maness and his wife, Mary, live in Mt. Pleasant and have three children:
Megan, 21; Andy, 16 and Hannah, 11.

IBT Bancorp manages over $1.0 billion in customer assets through its banking
subsidiaries. The corporation includes Isabella Bank and Trust, Farmers State
Bank, Isabella County Abstract Company, Mecosta County Abstract and Title
Company, IBT Title -- Clare County, Benchmark Title Company of Greenville, IBT
Loan Production and Financial Group Information Services.