Everything for Oakland County property taxes in 2026: calculate your bill with the current 1.44% effective rate, see how assessment and exemptions work here, when payments are due, how to appeal — and where to pay.
How property tax works in Oakland County
Effective rate
1.44% of market value · median annual bill $6,480
How homes are assessed
Michigan taxes 'taxable value' capped at 50% of market value (State Equalized Value); taxable value growth is capped at inflation or 5%/yr until the property transfers.
Homestead exemption
Principal Residence Exemption (PRE) exempts the home from up to 18 mills of school operating tax — a rate reduction rather than a dollar exemption.
Appealing your assessment
March Board of Review in the local township/city; further appeal to the Michigan Tax Tribunal by the end of July for residential.
When bills are due
Summer bills due September 14; winter bills due February 14 (local variation exists).
Local note
PRE handled as a millage reduction in the engine, not a dollar exemption — engine already supports ratio-based states.