City of Madison Heights issued the following announcement on Feb 1.
Winter Property Taxes are payable December 1, 2021 to February 14, 2022 without penalty.
Starting February 15, 2022, a 3% penalty is added, Penalty is calculated on tax due (excluding administration fee.) Beginning March 1, 2022 delinquent bills must be paid to Oakland County Treasurer.
Original source can be found here.
Source: City of Madison Heights