Mich. Comp. Laws § 41.350g: Making assessment on special assessment roll or on regular township tax roll; due date; collection; return for nonpayment.

Sec. 20g.

The assessment authorized by section 20b may be made either on a special assessment roll or in a column provided for this purpose on the regular township tax roll. After the assessment has been confirmed, it shall become due and collected when other township taxes fall due and are collected and shall be returned for nonpayment in the same manner as other township taxes.