Budget & Taxes

House Bill 4342 amends Michigan's state revenue sharing act, introducing a new condition for withholding state funds from local governments. Beginning October 1, 2025, the state treasurer would withhold all revenue sharing payments from any city, village, township, or county. This would occur if the local government enacts or enforces a law, ordinance, policy, or rule that violates the "local government sanctuary policy prohibition act" or the "county law enforcement protection act." Payments would be withheld for as long as the violating policy remains in effect. This bill is tied to the enactment of House Bills 4338 and 4339.

HB 4185 changes how Michigan's general sales tax revenue is distributed. It directs 15% of the 4% sales tax to cities, villages, and townships through the Glenn Steil Revenue Sharing Act. Sixty percent goes to the state school aid fund (including all 2% tax from aviation fuel sales), while 27.9% of 25% from vehicle/fuel sales funds the transportation system. Additionally, it requires $9-12 million annually from computer software sales to the Michigan health initiative fund.

HB 4184 increases Michigan's excise tax on aviation fuel from 3.10 cents to 4.00 cents per gallon. It directly affects fuel sellers, airlines, and airport operators by changing how this tax revenue is distributed. The bill modifies Section 203 of the Aeronautics Code to require 35% of the tax revenue to fund the state aeronautics fund and 65% to fund qualified airports. It also retains the 1.5-cent refund for airlines operating interstate flights and the exemption for fuel used in leaded racing fuel production.

HB 4186 increases Michigan's business income tax rate from 4.95% to 30% for all business activity occurring on or after January 1, 2025. This rate change directly affects businesses operating within Michigan that are subject to the state's business tax, including those previously filing under the corporate income tax act. The bill amends sections 201 and 500 of the Michigan Business Tax Act (2007 PA 36) to implement this rate increase and adjust the tax base calculations for businesses. The change represents a significant policy shift in how Michigan taxes business income, effective in 2025.