Corporate income tax: rate; rate increase and earmark of increased revenue to school aid fund; provide for. Amends secs. 623 & 695 of 1967 PA 281 (MCL 206.623 & 206.695).

HB 4144 increases Michigan's corporate income tax rate from 6% to 8.5% effective January 1, 2025, affecting corporations operating in the state. It directs a specific portion of the revenue increase - specifically, the amount attributable to the 2.5% rate hike - to the state school aid fund starting with the 2025-2026 fiscal year. The bill also allocates other portions of the tax revenue to housing, community development, and revitalization funds during the 2022-2025 fiscal years. This is a direct policy change altering tax rates and revenue distribution, not a procedural or commemorative measure.