Mich. Comp. Laws § 124.758

Sec. 8. (1) Money received by an authority as payment of taxes, penalties, or interest, or from the redemption or sale of property subject to a tax lien of any taxing unit shall be returned to the local tax collecting unit in which the property is located for distribution on a pro rata basis to the appropriate taxing units in an amount equal to delinquent taxes, penalties, and interest owed on the property, if any. (2) Except as otherwise provided in this act, as required by other law, as required under the provisions of a deed, or as an authority otherwise agrees, any proceeds received by the authority may be retained by the authority for the purposes of this act.