Michigan operates one of the simplest state income tax structures in the Great Lakes region: a single flat rate applied to all taxable income, with a modest personal exemption that adjusts annually for inflation. In 2026 the rate is 4.25%, down from 4.35%, the result of a legislated reduction tied to surplus revenue conditions.
The main complexity in Michigan income tax comes from two sources. First, city income taxes — Detroit charges 2.4% on residents on top of the state rate, and several other Michigan cities levy their own taxes. Second, retirement income treatment is deliberately tiered by birth year, creating very different outcomes for retirees depending on when they were born. This guide covers both layers in full, with worked examples at five income levels.
Michigan's flat income tax applies to Michigan taxable income, which starts with your federal adjusted gross income (AGI) and then applies Michigan-specific adjustments — additions for certain income not taxed federally, and subtractions for items Michigan excludes. The most widely applicable subtraction is the personal exemption.
The personal exemption for 2026 is approximately $5,600 per exemption claimed. This figure adjusts annually for inflation; it was $5,400 in 2023 and has edged upward since. Because each member of a family unit claims their own exemption, a married couple filing jointly would subtract $11,200 from Michigan taxable income before the 4.25% rate applies, and a family of four with two dependent children would subtract $22,400.
The 4.25% rate itself reflects a downward adjustment from 4.35%. Michigan law ties the rate to a surplus revenue formula: if the state's general fund exceeds a specified threshold, the rate steps down. The rate was 4.35% for several years before conditions triggered the reduction to 4.25%. Michigan does not have graduated brackets — every dollar of Michigan taxable income (above exemptions) is taxed at exactly 4.25%.
Capital gains are treated as ordinary income and taxed at 4.25%. There is no Michigan preferential rate for long-term gains. Michigan also does not conform to all federal deductions — for example, Michigan does not allow a deduction for state and local taxes (which is moot at the federal level post-TCJA for many filers, but the Michigan starting-point-of-federal-AGI approach means many federal deductions are not available to reduce Michigan taxable income).
The following examples use a single filer claiming one personal exemption of $5,600, so Michigan taxable income equals gross income minus $5,600. The 4.25% rate is then applied to that taxable amount.
The effective rate rises toward — but never reaches — 4.25% because the $5,600 personal exemption becomes a progressively smaller share of income as earnings grow. At $50,000 the exemption offsets 11.2% of gross income; at $250,000 it offsets just 2.2%.
These figures reflect state income tax only. Michigan residents in cities with a local income tax face an additional layer on top of these amounts — see the Detroit section below for the combined calculation at $100,000.
Michigan is one of a handful of states that permits cities to levy their own income taxes under the Michigan Uniform City Income Tax Ordinance. Detroit is the most significant of these cities, with a 2.4% rate on residents and a 1.2% rate on non-residents who earn income in Detroit (for example, commuters who work downtown but live in suburban Oakland or Macomb counties).
The Detroit city tax applies to city taxable income, which largely tracks Michigan taxable income. For a Detroit resident earning $100,000:
Other Michigan cities with city income taxes include:
Non-residents who work in Detroit but live in a Michigan suburb pay only 1.2% to Detroit — not 2.4% — but may also owe city tax to their city of residence if it levies one. Workers who live and work entirely in suburban or rural Michigan with no city income tax owe only the 4.25% state rate.
Michigan's treatment of retirement income is more complicated than its flat income tax rate suggests. Deductions available for pension and retirement income depend entirely on the taxpayer's birth year, creating three distinct tiers.
Born before 1946 — fully exempt: If you were born before January 1, 1946, all qualifying pension and retirement income is fully exempt from Michigan income tax. This includes private pensions, IRA distributions, 401(k) withdrawals, and similar income. Combined with Social Security exemption, many pre-1946 retirees owe little or no Michigan income tax on retirement income.
Born 1946–1952 — partial deduction: Taxpayers born between January 1, 1946, and December 31, 1952, may deduct up to $20,000 (single) or $40,000 (married filing jointly) of qualifying retirement income. Amounts above those thresholds are taxed at 4.25%. A single filer in this age group with $35,000 of pension income would subtract $20,000 and pay Michigan tax on the remaining $15,000.
Born after 1952 — subject to income tax, with phase-in of deductions: Taxpayers born after December 31, 1952, were historically ineligible for the retirement income deduction. However, Michigan legislation passed in 2023 (PA 4 of 2023) phases in retirement income deductions for this group over several years. The full details of the phase-in schedule are complex and tied to tax year, making it important for post-1952 retirees to verify their specific deduction with a tax professional or the Michigan Department of Treasury. The direction of the legislation is toward expanding deductions for this cohort, but the timeline and amounts applicable in 2026 should be confirmed against current Treasury guidance.
Social Security benefits are exempt from Michigan income tax for all filers regardless of birth year or income level.
Michigan sits between two neighbors with significantly different income tax structures, making a direct comparison useful for residents near state borders or considering relocation.
Michigan (4.25% flat): Single rate on all income above the personal exemption. Straightforward to calculate. City taxes apply in Detroit and several other cities. Personal exemption of $5,600 provides meaningful relief at lower income levels.
Illinois (4.95% flat): Illinois also uses a flat rate, but at 4.95% — 0.7 percentage points higher than Michigan. Illinois allows a $2,425 personal exemption (single), significantly lower than Michigan's $5,600. On $100,000 of income, an Illinois resident pays approximately $4,731 in state income tax versus Michigan's $4,012 — a difference of $719/year. Illinois also levies no local income taxes (cities cannot impose income taxes in Illinois), so Michigan's advantage partially depends on whether you live in Detroit or another city with a local tax.
Ohio (graduated brackets, up to 3.5% + municipal taxes): Ohio's state income tax is lower than both Michigan and Illinois at the top rate — Ohio's top marginal rate is approximately 3.5% on income above $115,300 (2026 approximate). However, virtually all Ohio residents also pay municipal income taxes, which typically run 1%–2.5% depending on the city. Columbus residents pay 2.5%, Cleveland 2.5%, Cincinnati 1.8%. The combined Ohio state + municipal burden for most urban Ohio workers lands in the 5%–6% range, making Ohio less clearly advantageous once city taxes are included.
Michigan's personal exemption of $5,600 versus Illinois's $2,425 means Michigan provides a larger exemption benefit at identical incomes. For a single filer at $50,000: Michigan effective rate is 3.77% versus Illinois effective rate of approximately 4.81% — a meaningful gap. For higher earners, the gap narrows in percentage-point terms but grows in dollar terms.
Michigan's flat tax structure creates predictable winners and losers compared to states with graduated brackets or higher flat rates.
Auto industry and manufacturing workers: Michigan's industrial workforce, concentrated in the Detroit metropolitan area, Grand Rapids, Flint, and Lansing, earns primarily from wages and salaries. The flat 4.25% rate is transparent and stable — predictable for workers navigating union contracts and overtime pay. The personal exemption provides proportionally larger relief for moderate-income workers than for executives.
Retirees born before 1946: This group benefits from complete exemption of pension and retirement income plus Social Security exemption. A retiree in this cohort with $60,000 in combined pension and Social Security income likely owes zero Michigan income tax on that income — one of the most favorable retirement tax outcomes in the Great Lakes region.
Moderate-income single earners ($40,000–$80,000): The $5,600 personal exemption offsets a meaningful share of income at these levels, pushing effective rates well below 4.25%. These earners benefit more from the exemption (as a share of income) than higher earners do.
Who benefits less: High earners in Detroit see the combined 4.25% state + 2.4% city rate hit 6.65% at the margin — higher than many comparable metro areas. High earners who derive income from capital gains receive no preferential Michigan rate. Post-1952 retirees taking large IRA distributions face the full 4.25% state rate on amounts above any applicable phase-in deduction.
Remote workers and suburban Michigan residents outside city tax jurisdictions benefit from the clean 4.25% flat rate with no additional local layer — a straightforward and relatively moderate tax burden compared to Illinois or combined Ohio state-plus-municipal rates.
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