Michigan Compiled Laws, Chapter 123. Local Government § 123.1287

Sec. 27. (1) The property of an authority created under this act is public property devoted to an essential public and governmental purpose. Income of an authority is for a public and governmental purpose.

(2) Except as otherwise provided in this subsection, the property of an authority created under this act and its income, activities, and operations are exempt from all taxes and special assessments of this state or a political subdivision of this state. Property of an authority and its income, activities, and operations that are leased to private persons are not exempt from any tax or special assessment of this state or a political subdivision of this state. Property of an authority is exempt from any ad valorem property taxes levied under the general property tax act, 1893 PA 206, MCL 211.1 to 211.155, or other law of this state authorizing the taxation of real or personal property. An authority is an entity of government for purposes of section 4a(1)(a) of the general sales tax act, 1933 PA 167, MCL 205.54a, and section 4(1)(h) of the use tax act, 1937 PA 94, MCL 205.94.