State agencies (existing): treasury; monthly report on fiscal impact of tariffs on the economy of this state; require. Amends sec. 18 of 1941 PA 122 (MCL 205.18).

HB 5640 requires the Michigan Department of Treasury to publish a monthly report starting January 1, 2026, on the economic impact of tariffs imposed by the U.S. government or foreign governments (after January 20, 2025) on Michigan's economy. The report must include the net fiscal impact of these tariffs on state revenue collections from the previous month. The Treasury Department must also submit a copy of each report to the Attorney General. This bill does not change tariff laws but mandates regular, transparent reporting on how tariffs affect Michigan's budget and economic activity.