Michigan Remote Employee Tax Withholding: Flat 4.25% and Six Reciprocity Agreements

Michigan is a flat-tax state with one of the broadest reciprocity networks in the country, plus a distinctive city income tax system that affects 22 cities including Detroit and Grand Rapids. Michigan applies a flat 4.25% state income tax on federal adjusted gross income, maintains reciprocity with six neighboring states (Illinois, Indiana, Kentucky, Minnesota, Ohio, and Wisconsin), and layers city income taxes on top in certain jurisdictions. The state is also implementing a dramatic SUI wage base increase from $9,500 to $56,000 in 2025-2027, which will significantly affect employer payroll costs. This guide walks through the Michigan tax landscape, residency rules, withholding for residents and non-residents, reciprocity mechanics, city income taxes, SUI through the Michigan Unemployment Insurance Agency (UIA), out-of-state employer obligations, the credit for taxes paid to other states, Michigan-specific wage laws, recent developments including the 2024 minimum wage court ruling, and common payroll mistakes.

The Michigan Tax Landscape

Michigan levies a flat individual income tax at 4.25% on federal adjusted gross income with state-specific adjustments, under the Michigan Income Tax Act (MCL 206.1 et seq.). The 4.25% rate has been in effect since 2013, when voters approved a constitutional amendment capping the rate at 4.25%. Statutory revenue triggers can produce temporary rate reductions — in 2023 the rate briefly dropped to 4.05% under a trigger mechanism, but the Michigan Department of Treasury subsequently ruled that the reduction was temporary and restored the rate to 4.25% for 2024 and 2025. The flat rate applies regardless of filing status or income level, and Michigan does not have graduated state brackets. On top of the state tax, 22 Michigan cities levy separate city income taxes that apply to residents and, in most cases, to non-residents who work in the city.

For payroll purposes, Michigan imposes three employer-side obligations: state income tax withholding at 4.25% on wages, State Unemployment Insurance (SUI) paid by the employer on the first $9,500 of wages per employee per year (rising dramatically to $56,000 in 2025-2027), and city income tax withholding in the 22 taxing cities. Michigan does not have a state disability insurance program, no state paid family leave program, and no local income tax outside the 22 city income tax jurisdictions. The Michigan Department of Treasury administers both the state income tax and the city income taxes, and the Michigan Unemployment Insurance Agency (UIA) administers SUI. Combined state-plus-city top marginal rates can reach approximately 6.65% for Detroit residents (4.25% state plus 2.40% city), which is among the higher combined rates in the Midwest.

Michigan Residency Rules

Michigan residency is determined under two tests: domicile and statutory residency, both codified in the Michigan Income Tax Act. Domicile is the place where an individual has their true, fixed, and permanent home and to which they intend to return whenever absent. Once established, domicile persists until the individual establishes a new domicile through physical presence in a new jurisdiction combined with intent to remain there indefinitely. The Michigan Department of Treasury applies a multi-factor domicile test that examines family location, business activities, time spent inside and outside Michigan, real and tangible property holdings, and persistence of Michigan ties such as voter registration, driver's license, vehicle registration, and banking relationships. Michigan residents are taxed on worldwide income regardless of where it is earned.

Michigan statutory residency applies when an individual maintains a permanent place of abode in Michigan and spends 183 or more days of the tax year inside Michigan. The 183-day threshold is the standard bright-line test, and Michigan counts any part of a day as a full day except for transit days. A part-year resident who established or abandoned Michigan domicile during the tax year files Form MI-1040 and reports income as a resident for the resident period and as a non-resident for the non-resident period using Schedule NR. Michigan does not have a special safe-harbor rule like New York's 30-day rule or California's 549-day rule, so any individual with significant Michigan presence should track day counts carefully. The Michigan Department of Treasury has historically been less aggressive on remote-work audits than New York or California, but residency audits do occur and the burden of proof is on the taxpayer.

Michigan Withholding for Residents

Michigan residents are subject to Michigan income tax on all income regardless of source, and employers must withhold Michigan income tax from wages paid to Michigan residents. The withholding calculation uses Form MI-W4, the Michigan Employee's Withholding Exemption Certificate, which is separate from the federal Form W-4. The MI-W4 collects the employee's withholding exemptions and additional withholding amounts. Michigan does not have a standard deduction; instead it uses a personal exemption of $5,600 per exemption for 2025, indexed for inflation, which reduces the taxable wage base before the 4.25% rate applies. An employee can claim one personal exemption for themselves, one for a spouse (if not claimed separately), and one for each dependent.

The Michigan withholding formula is straightforward: subtract the personal exemption allowance (multiplied by the number of claimed exemptions) from gross wages, then multiply the result by 4.25%. For an employee claiming one exemption on $50,000 annual wages, withholding is approximately $1,891 per year ($50,000 minus $5,600, times 4.25%). Supplemental wages (bonuses, commissions, and similar payments) are subject to Michigan supplemental withholding at 4.25% with no exemption adjustment, per the Michigan Department of Treasury withholding guide. Employees who have non-wage income or who expect to owe more than their withholding can request additional withholding on Form MI-W4. Employees can also claim exemption from Michigan withholding on Form MI-W4 if they had no Michigan income tax liability in the prior year and expect none in the current year, which is rare for wage earners. Employees can also claim exemption from Michigan withholding under reciprocity if they are residents of Illinois, Indiana, Kentucky, Minnesota, Ohio, or Wisconsin working in Michigan.

Michigan Withholding for Non-Residents

Michigan non-residents are subject to Michigan income tax only on Michigan-source income. For employees, Michigan-source income means wages earned while physically performing services in Michigan. A non-resident employee who works entirely outside Michigan for a Michigan employer has no Michigan-source wages and no Michigan withholding obligation, unless reciprocity with the employee's state of residence changes the analysis. Non-resident withholding is computed by allocating the employee's annual wages across states based on days worked in each state, then applying Michigan withholding to the Michigan-allocated portion. Michigan does not enforce a convenience rule for non-resident employees of Michigan employers who work remotely outside Michigan, so a non-resident working remotely from another state has no Michigan-source wages.

Non-resident employees file Form MI-1040 and Schedule NR to report Michigan-source income and compute the non-resident tax. The non-resident tax is calculated by taking the Michigan tax on total income (as if the employee were a resident) and multiplying by the ratio of Michigan-source income to total income. Non-resident employees who expect to owe less Michigan tax than the withholding amount can claim an exemption under reciprocity by filing Form MI-W4 with the Michigan employer and checking the reciprocity box. Michigan also requires withholding on certain non-wage payments to non-residents, including lottery winnings over $5,000 for residents of states without reciprocity, and certain gambling winnings, per the Michigan Department of Treasury non-resident withholding rules.

Michigan Reciprocity

Michigan has income tax reciprocity agreements with six neighboring states: Illinois, Indiana, Kentucky, Minnesota, Ohio, and Wisconsin, per the Michigan Department of Treasury. Under reciprocity, residents of one state who work in Michigan are taxed only by their state of residence, and Michigan does not withhold income tax. For example, an Indiana resident who commutes to Detroit for work files Form MI-W4 with the Michigan employer and checks the reciprocity box, the employer stops Michigan withholding, and the employee pays Indiana income tax on the wages instead. Reciprocity only applies to wages, salaries, commissions, and other compensation for personal services — it does not apply to business income, rental income, lottery winnings, or other income types.

The reciprocity forms are state-specific. Michigan residents who work in a reciprocal state file that state's reciprocity exemption form with the work-state employer. For Illinois, the form is IL-W-5-NR; for Indiana, the form is WH-47; for Kentucky, the form is 42A809; for Minnesota, the form is MWR; for Ohio, the form is IT 4 NR; and for Wisconsin, the form is Form 220. Conversely, residents of those states who work in Michigan file Form MI-W4 with the Michigan employer and check the reciprocity box to claim the exemption. Reciprocity does not apply to city income tax — a non-resident working in Detroit is still subject to Detroit non-resident city income tax even if exempt from Michigan state income tax under reciprocity. Reciprocity also does not apply to SUI; SUI is paid to the state where the work is performed, regardless of income tax reciprocity.

Michigan City Income Tax

Twenty-two Michigan cities levy a separate city income tax under the City Income Tax Act (MCL 141.501 et seq.), with Detroit the largest and most well-known. The Detroit city income tax rate is 2.40% for residents and 1.20% for non-residents, producing a combined state-plus-city rate of 6.65% for Detroit residents and 5.45% for Detroit non-residents on top of the 4.25% state rate. Grand Rapids levies 1.50% for residents and 0.75% for non-residents, while other taxing cities include Saginaw, Flint, Lansing, Pontiac, Jackson, Battle Creek, Port Huron, Muskegon, and several others. City income tax rates generally range from 1.00% to 2.40% for residents and 0.50% to 1.20% for non-residents. The city income tax is collected by the Michigan Department of Treasury through payroll withholding and annual returns, not by the individual cities.

City income tax withholding is required for employees who work in a taxing city, regardless of their state of residence or state of residence reciprocity status. Additionally, city of residence withholding is required for employees who live in a taxing city, even if they work outside the city. This produces a complex withholding matrix for employees who live in one taxing city and work in another. For example, a Detroit resident who works in Grand Rapids has both Detroit resident city tax withholding (2.40%) and Grand Rapids non-resident city tax withholding (0.75%), with a credit claimed on the Detroit return for taxes paid to Grand Rapids. Non-resident employees of a Michigan employer located in a taxing city have city income tax withholding even if exempt from Michigan state income tax under reciprocity. Out-of-state employers with Michigan remote employees in a taxing city must register for city income tax withholding in addition to state income tax withholding.

Michigan SUI (UIA)

Michigan State Unemployment Insurance is administered by the Michigan Unemployment Insurance Agency (UIA) under the Michigan Employment Security Act (MCL 421.1 et seq.). The new employer SUI rate is approximately 2.7% for most non-construction industries, with a higher rate of 6.8% for new construction employers. The SUI wage base has been $9,500 per employee per year for many years, but is scheduled to increase dramatically under 2024 legislation: $9,500 in 2024, then $56,000 in 2025-2027, then reverting to $9,500 in 2028 unless extended by the legislature. The wage base increase is the largest single-state SUI increase in recent years and will significantly affect employer payroll costs in Michigan for 2025-2027. The maximum new-employer per-employee contribution at the $56,000 base is approximately $1,512 (2.7% × $56,000) for non-construction or $3,808 (6.8% × $56,000) for construction, a substantial increase from the prior $256 (2.7% × $9,500) under the old wage base.

After the initial period (typically three years), the rate becomes experience-rated based on the employer's benefit charge ratio and taxable payroll, with rates ranging from 0.06% to 10.30% under the standard tax schedule. Employers register for a UIA unemployment tax account through the Michigan Web Account Manager (MiWAM) system, which is separate from the Michigan Department of Treasury income tax withholding registration. Quarterly wage reports are due April 30, July 31, October 31, and January 31, with both wage detail and tax payment submitted on the same form. Late or missing returns generate penalties, and the UIA actively audits employers who fail to register or file. Michigan also requires new-hire reporting to the Michigan State Directory of New Hires within 20 calendar days of hire.

Out-of-State Employer With a Michigan Remote Employee

An out-of-state employer that hires a Michigan remote employee creates Michigan payroll tax nexus and must register with both the Michigan Department of Treasury for an income tax withholding account and the Michigan UIA for an SUI account. If the employee lives or works in one of the 22 taxing cities, the employer must also register for city income tax withholding through the Michigan Department of Treasury. The registrations are separate and produce separate account numbers. The Michigan Department of Treasury withholding registration is completed online through the Michigan Treasury Online (MTO) system, and the UIA SUI registration is completed through MiWAM. Both registrations typically take five to ten business days to process. Foreign-entity registration with the Michigan Department of Licensing and Regulatory Affairs (LARA) may also be required for corporations and LLCs transacting business in Michigan.

Once registered, the out-of-state employer must withhold Michigan income tax at 4.25% from the remote employee's wages, file quarterly withholding returns through MTO, and file annual Form 165 reconciliation with the Department of Treasury by January 31. The employer must also pay SUI on the first $56,000 (for 2025-2027) of the Michigan employee's wages, file quarterly wage reports through MiWAM, and report new hires to the Michigan State Directory of New Hires. If the employee lives or works in a taxing city, the employer must also withhold city income tax and file quarterly city withholding returns. The employee must complete Form MI-W4 for state withholding calculations. The employer must also secure Michigan workers' compensation coverage, comply with the Michigan Payment of Wages and Fringe Benefits Act, and comply with Michigan equal pay laws.

Michigan Resident Working for an Out-of-State Employer

A Michigan resident who works remotely for an out-of-state employer is still subject to Michigan income tax on all wages, regardless of where the employer is located. Michigan taxes its residents on worldwide income. The out-of-state employer should register with the Michigan Department of Treasury and withhold Michigan income tax from the resident employee's wages, although many out-of-state employers fail to do this initially and the resident must make estimated tax payments to cover the Michigan liability. If the work state also taxes the resident (because the work state does not have reciprocity with Michigan — reciprocity exists with Illinois, Indiana, Kentucky, Minnesota, Ohio, and Wisconsin — and sources wages to the employer's state), Michigan provides a credit for taxes paid to other states on Form MI-1040, Schedule 2.

The credit is calculated as the lesser of the tax paid to the other state on the out-of-state wages or the Michigan tax attributable to those same wages. Because Michigan applies a flat 4.25% rate, the credit calculation is straightforward, but the credit cannot exceed the Michigan tax on the out-of-state income. For high-tax work states like California (13.3% top rate) or New York (10.9% top rate), the Michigan credit is capped at 4.25% of the out-of-state wages, and the Michigan resident bears the rate differential. For work states with reciprocity (Illinois, Indiana, Kentucky, Minnesota, Ohio, Wisconsin), the Michigan resident pays only Michigan tax and the work state does not withhold, so no credit is needed. Michigan does not enforce a convenience-of-the-employer rule, so a Michigan resident who works remotely from Michigan for a New York or Connecticut convenience-rule state will be taxed by Michigan on the wages and may also be taxed by the work state, with the credit mechanism applying.

Michigan-Specific Wage Laws

The Michigan Payment of Wages and Fringe Benefits Act (MCL 408.471 et seq.) governs the timing and method of wage payment for Michigan employees. Wages must be paid at least semimonthly on regular paydays designated in advance, and final paychecks must be delivered within a reasonable time after separation, generally the next regular payday. Accrued fringe benefits including vacation, holiday, and sick pay must be paid out at separation unless the employer's written policy explicitly provides for forfeiture, and Michigan enforces this rule strictly. Violations of the Payment of Wages and Fringe Benefits Act can result in damages plus attorney's fees, making wage-and-hour litigation particularly costly in Michigan. The act also requires that fringe benefit information be disclosed in writing to employees.

The Michigan minimum wage is $10.56 per hour for 2025, following a July 2024 Michigan Supreme Court ruling that restored the original 2018 ballot initiative's scheduled increases, per the Michigan Department of Labor and Economic Opportunity (LEO). The court ruling overturned prior legislative amendments that had slowed the scheduled increases and reduced the tipped minimum wage. The minimum wage will continue to increase annually, reaching approximately $14.97 per hour by 2028, with the tipped minimum wage also increasing toward parity with the standard rate. The Michigan Improved Workforce Opportunity Wage Act governs the minimum wage, and the Michigan Department of Labor and Economic Opportunity enforces wage-and-hour violations. Michigan also enforces the Paid Medical Leave Act, which requires employers with 50 or more employees to provide up to 40 hours of paid medical leave per year, accrued at 1 hour per 35 hours worked.

Recent Michigan Tax Developments

The most significant recent Michigan tax development is the July 2024 Michigan Supreme Court ruling in Mothering Justice v. Attorney General, which restored the original 2018 ballot initiative's scheduled minimum wage increases and paid medical leave requirements. The court ruling overturned prior legislative amendments that had slowed the scheduled minimum wage increases and reduced the tipped minimum wage. Under the ruling, the minimum wage increases from $10.33 per hour in 2024 to $10.56 in 2025, then continues to increase annually to approximately $14.97 by 2028. The tipped minimum wage also increases toward parity with the standard rate, eliminating the tip credit by 2030. Employers should update payroll systems to reflect these increases and ensure tipped employees are paid the correct rate.

The second major development is the dramatic increase in the Michigan SUI wage base from $9,500 to $56,000 for 2025-2027, enacted under 2024 legislation to replenish the unemployment trust fund. This is the largest single-state SUI wage base increase in recent years and will significantly affect employer payroll costs in Michigan for 2025-2027. The wage base reverts to $9,500 in 2028 unless extended by the legislature. Out-of-state employers with Michigan remote employees should update payroll systems to apply the new $56,000 wage base and budget for the increased SUI cost. The Michigan income tax rate remains at 4.25% for 2025, after a brief 2023 reduction to 4.05% under a revenue trigger that the Department of Treasury subsequently ruled was temporary. The 4.25% rate is constitutionalized by voter approval and is unlikely to change in the near term.

Common Michigan Payroll Mistakes

The most common Michigan payroll mistake is mishandling reciprocity for employees who live in Illinois, Indiana, Kentucky, Minnesota, Ohio, or Wisconsin. Employers often continue Michigan withholding for residents of those states who have filed Form MI-W4 with the reciprocity box checked, producing over-withholding that the employee must recover through a refund claim at year-end. The second common mistake is failing to register for both the Michigan Department of Treasury withholding account and the Michigan UIA SUI account — these are separate registrations, and missing one of them produces back-tax exposure with the corresponding agency.

The third common mistake is mishandling city income tax in the 22 taxing cities, particularly for employees who live in one taxing city and work in another, or for non-residents working in Detroit who are exempt from Michigan state income tax under reciprocity but still owe Detroit non-resident city income tax. The fourth common mistake is failing to update SUI withholding for the 2025 wage base increase to $56,000, which produces significant under-withholding of SUI contributions. The fifth common mistake is failing to file quarterly Form 941 withholding returns even in zero-wage quarters, which generates penalties.

The sixth common mistake is mishandling supplemental wages — Michigan supplemental withholding is 4.25% with no exemption adjustment, and applying the standard formula to bonuses produces incorrect withholding. The seventh common mistake is failing to file annual Form 165 reconciliation with W-2 copies by the January 31 deadline, which generates per-form penalties. The eighth common mistake is mishandling the 2024 minimum wage court ruling, particularly for tipped employees whose tip credit is being phased out, and for employers who failed to update rates for the scheduled annual increases. The ninth common mistake is failing to comply with the Michigan Paid Medical Leave Act for employers with 50 or more employees, including proper accrual tracking and carryover.

What to Do Next

Audit your Michigan payroll compliance using the nine common mistakes above. Verify that your Michigan Department of Treasury withholding account and UIA SUI account are both active and that quarterly returns are filed on time, including zero returns for no-wage quarters. Confirm that SUI contributions are calculated on the new $56,000 wage base per employee for 2025 and that the new employer rate of approximately 2.7% is correctly applied. Verify that Form MI-W4 is on file for every Michigan employee, that reciprocity exemptions are correctly honored for residents of Illinois, Indiana, Kentucky, Minnesota, Ohio, and Wisconsin, and that city income tax withholding is correctly applied for employees who live or work in any of the 22 taxing cities. Confirm that the Michigan minimum wage of $10.56 per hour is correctly applied for 2025 and that tipped employees are paid the correct rate under the court-ordered phase-out of the tip credit. If you have a Michigan resident working for an out-of-state employer, confirm that the credit for taxes paid to other states is being claimed on Form MI-1040, Schedule 2. Run our multi-state withholding calculator for each Michigan employee to verify the full federal, state, and city payroll picture.