Taxes in Troy
Michigan's real, flat 4.25% state income tax applies to Troy residents, with NO separate city income tax -- layered on Oakland County's Proposal A-shaped property tax.
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Learn moreMichigan's flat state income tax, with no Troy add-on
Michigan levies a flat 4.25% state income tax (no brackets). Troy itself levies NO separate municipal income tax -- confirmed via multiple sources this pass -- a real, meaningful distinction from Detroit's own additional 2.4% resident city rate documented elsewhere in this project.
Proposal A and Troy's own effective property tax rate
Troy's own median effective property tax rate ran 1.28% per Ownwell (median annual bill approximately $4,380), while Oakland County's broader countywide figures span a real, disclosed 0.50%-2.10% by municipality. Proposal A caps taxable-value growth at the lesser of 5% or inflation (2.7% for 2026) for existing owners, uncapped only at sale.
Confirm the specific millage for a target address
Given the real, wide spread across Oakland County municipalities, confirm a specific property's actual current millage directly with the Oakland County Treasurer or Troy's own assessor.
Key takeaways
- Michigan's flat 4.25% state income tax applies, with NO additional Troy city income tax -- unlike Detroit.
- Troy's own median effective property tax rate runs 1.28%, within Oakland County's real 0.50%-2.10% range.
- Proposal A caps taxable-value growth at the lesser of 5% or inflation annually, uncapped only at sale.
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