Income Taxes in Michigan
Michigan levies a real, current FLAT 4.25% individual income tax -- genuinely simple and comparatively low relative to the graduated, high-top-rate states already built in this project, with one real, easy-to-miss historical wrinkle worth understanding.
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Learn moreOne flat rate, no brackets
Unlike California's 9-bracket, 1%-13.3% graduated structure or Oregon's graduated brackets topping out at 9.9%, Michigan applies a single flat rate to all taxable income regardless of amount -- currently 4.25%. This genuinely simplifies tax planning: there is no bracket math to run, and a household's effective rate on Michigan-taxable income is close to the flat rate itself, aside from Michigan's personal exemption and other specific deductions/credits.
A real, easy-to-miss 2023-only dip to 4.05%, reverted for 2024 onward
Under a one-time constitutional revenue-trigger provision, Michigan's flat rate was reduced to 4.05% for the 2023 tax year ONLY. The Michigan Court of Appeals ruled in 2023 that this reduction was a single-year event, and the rate reverted to 4.25% for tax year 2024 onward -- the current, correct rate for 2026. A small number of secondary tax-reference sources reviewed this pass still cite the expired 4.05% figure; this record uses 4.25% given the confirmed 2024 reversion.
Some Michigan cities levy their own additional local income tax
A number of Michigan cities, Detroit among them, separately levy their own municipal income tax on top of the state's flat 4.25% rate -- a real, disclosed factor for anyone specifically targeting one of these cities. This record does not catalog every Michigan municipality's local rate here; confirm your specific target city's local income-tax status directly.
Key takeaways
- Michigan's current flat individual income tax rate is 4.25% -- a single rate for all taxable income, genuinely simpler than graduated-bracket states.
- The rate dipped to 4.05% for the 2023 tax year only under a one-time constitutional trigger, court-confirmed as reverted to 4.25% for 2024 onward -- use 4.25% as current.
- A number of Michigan cities, including Detroit, levy their own separate local income tax on top of the state rate -- confirm your specific target city directly.
- Michigan's flat rate is genuinely lower than California's 13.3% top marginal rate and Oregon's 9.9% top rate, though not zero the way some other states in this project carry.
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