City of Birmingham issued the following announcement on Feb 23.
Just a reminder that the last day to pay Summer and Winter property taxes to the city is February 28th. Please read the front and back of your bill, as it includes information regarding interest/penalties and payment options. With the deadline approaching, please note you may pay online, at the Treasurer's Office, or via drop boxes located at the South side of City Hall (enter from Henrietta St.)
https://bsaonline.com/OnlinePayment/OnlinePaymentSearch...
Beginning March 1st, 2022, all unpaid 2021 taxes must be paid to the Oakland County Treasurer, with additional penalties. A revised statement from the City Treasurer must accompany your remittance to the County Treasurer.
Original source can be found here.