Maner Costerisan

About Us

Maner Costerisan is a full-service public accounting, technology, and business consulting firm and one of the leading firms in the Great Lakes region. Our growth has been driven by long-term relationships and consistent investment in our people and our clients. For more than 100 years, our focus has been helping individuals and organizations reach their full potential. In January 2026, Baker Holtz CPAs and Advisors, joined Maner Costerisan and will continue to serve and grow in the Grand Rapids region.

By developing our team’s expertise, we enable them to deliver practical, strategic guidance to clients. By helping clients clarify their goals, build effective strategies, and execute with confidence, we contribute to stronger businesses and stronger communities.

Our firm is rooted locally and built by professionals with diverse skills, experience, and perspectives, while working with focus and accountability to help clients achieve measurable results.