Michigan Treasury Sets New Interest Rates for Tax Underpayments, Overpayments

The Michigan Department of Treasury published a revenue bulletin establishing new interest rates for tax underpayments and overpayments. The bulletin sets an annual interest rate of 7.85 percent, with a corresponding daily rate of 0.0002150, for tax deficiencies and excessive claims, effective July 1 through Dec. 31, 2026. This represents a decrease from the previous period’s rate of 8.48 percent. [Mich. Dep’t of Treasury, Revenue Administrative Bulletin 2026-5, 03/26/26]

This story was produced by Bloomberg Tax Automation, and edited by Bloomberg Tax staff.