SB 557: $100 million taxpayer subsidy for “certain businesses located in an aerospace defense zone” << Previous billNext bill >> Introduced September 18, 2025 Official text and analysis Corporate income tax: credits; research and development credit for certain businesses located in an aerospace defense zone; provide for. Amends 1967 PA 281 (MCL 206.1 - 206.847) by adding secs. 279 & 679.