Michigan Treasury Publishes Guidance on Research, Development Credit

The Michigan Department of Treasury published a Revenue Administrative Bulletin providing guidance on the research and development credit in the corporate income tax and withholding tax provisions of the Income Tax Act. The bulletin explains eligibility requirements, calculation of Michigan qualified research and development expenses, determination of the base amount, treatment of unitary business groups and reorganizations, and the process for filing tentative claims, which are required beginning April 1, for calendar year 2025 expenses. [Mich. Dep’t of Treasury, Bulletin 2026-4, 03/26/26]