Michigan Compiled Laws, Chapter 207. Taxation § 207.567

Sec. 17. (1) The assessor of each city or township in which is located a facility with respect to which an industrial facilities exemption certificate is in force shall annually determine, with respect to each such facility, an assessment of the real and personal property comprising the facility having the benefit of an industrial facilities exemption certificate which would have been made under Act No. 206 of the Public Acts of 1893, as amended,  1 if the certificate had not been in force. A holder of an industrial facilities exemption certificate shall furnish to the assessor such information as may be necessary for the determination.

(2) The assessor, having made the determination, shall annually notify the commission, the legislative body of each unit of local government which levies taxes upon property in the city or township in which the facility is located, and the holder of the industrial facilities exemption certificate of the determination, separately stating the determinations for real property and personal property, by certified mail not later than October 15 based upon valuations as of the preceding December 31.