MI HB4930

Amends the process for municipalities to identify and report errors in commercial and industrial personal property taxable values used for tax distribution calculations.

Establishes specific deadlines for municipalities to notify county officials of inaccurate property values: by November 30, 2021 for 2013-2015 values; by February 28, 2019 for 2013, 2016-2017 values; and by February 28 of the following year for 2018 and subsequent years.

Requires county equalization directors and county treasurers to review reported errors and notify the state department by specified deadlines (December 30, 2021, or March 29-31 depending on the year) with substantiating documentation.

Allows municipalities to challenge prior year distribution calculations posted online by providing supporting documentation, with the department determining whether documentation is sufficient to warrant payment adjustments.

Takes effect immediately upon enactment (October 15, 2020).