Economic development: downtown development authorities; certain requirements for initial assessed value; modify. Amends sec. 201 of 2018 PA 57 (MCL 125.4201).

HB 4209 modifies how initial assessed value is calculated for downtown development authorities under Michigan's Tax Increment Financing Act. It specifically adjusts the calculation method for municipalities with populations under 35,000 that established authorities before 1985 and had plans expire by December 31, 1991, or for municipalities with under 1,000 residents in small counties that had plans expire by December 31, 2022. The change ensures these municipalities can extend expired tax increment financing plans using an initial assessed value calculated as if the original plan had not expired. This affects downtown development authorities in small municipalities that are extending existing tax increment financing plans. The bill makes a technical administrative adjustment to the calculation process without creating new programs or changing funding mechanisms.