Michigan gives small employers one genuine gift: a flat state income tax. No brackets. No tiered tables. Just 4.05% on every dollar of wages. But michigan payroll taxes 2026 still include unemployment insurance, federal FICA and FUTA, and a city-level wrinkle that routinely blindsides first-time employers in Detroit and Grand Rapids. Here are the numbers that matter.
- Michigan state income tax: flat 4.05% on all wages
- SUI wage base: $9,500 | New employer rate: ~2.7% | Range: 0.06%–10.3%
- File state withholding via Michigan Treasury Online (MTO)
- Detroit employers: additional city tax of 2.4% (residents) / 1.2% (non-residents)
- W-2s due January 31, 2027 | SUI Form UIA-1028 due quarterly
Michigan Payroll Tax Rates at a Glance (2026)
The 4.05% flat income tax rate has held since Public Act 4 of 2023. It applies to every dollar of wages — a $30,000 earner and a $130,000 earner face the exact same percentage. No complexity, no surprises.
Unemployment insurance (SUI) is the other state-level obligation. The taxable wage base sits at $9,500 per employee per year — once an employee's wages cross that threshold, SUI stops accruing for the rest of the calendar year. Federal FUTA and FICA operate the same as in every other state.
| Tax | Rate | Wage Base | Who Pays |
|---|---|---|---|
| MI State Income Tax | 4.05% flat | All wages | Withheld from employee |
| MI SUI (SUTA) | 0.06%–10.3% (new: ~2.7%) | $9,500 per employee | Employer only |
| Federal FICA (SS) | 6.2% employee + 6.2% employer | $176,100 | Split employer/employee |
| Federal FICA (Medicare) | 1.45% + 1.45% | All wages | Split employer/employee |
| Federal FUTA | 0.6% (effective, after credit) | $7,000 per employee | Employer only |
What Michigan Employers Must Withhold & Remit
Two state-level obligations. Two separate portals. Confusing them is the first mistake new Michigan employers make. Before setting up either account, Small Business Payroll 101 is worth reading from start to finish.
State income tax withholding: Deduct 4.05% from every employee paycheck and remit to the Michigan Department of Treasury through Michigan Treasury Online (MTO) at michigan.gov/taxes. Michigan assigns your deposit schedule — monthly or quarterly — based on total annual withholding liability. Check your registration notice or MTO account to confirm which schedule applies.
SUI contributions are employer-paid only — employees never see this line on their pay stubs. New Michigan employers generally start around 2.7% per the Michigan Unemployment Insurance Agency, though the exact assigned rate can vary by industry. After a few years, the UIA recalculates your rate against your actual layoff history. A clean record earns rates as low as 0.06%. Frequent claims push it toward the 10.3% ceiling.
The three-step remittance sequence every Michigan employer follows each pay period:
-
1
Calculate — Multiply gross wages by 4.05% for state withholding. Separately, apply your assigned SUI rate to wages up to $9,500 per employee.
-
2
File — Submit income tax withholding through MTO. File SUI through the UIA's Michigan Web Account Manager (MiWAM). Separate logins. Separate filings. Do not mix them up.
-
3
Deposit by deadline — State income tax follows your assigned schedule. SUI via Form UIA-1028 is always quarterly. Miss one, and interest starts accruing the next day.
Michigan has 24 cities that levy their own income taxes. Detroit leads: residents pay 2.4% on all wages; non-residents working in the city pay 1.2%. Grand Rapids runs 1.5%/0.75%; Lansing, 1%/0.5%. If any employee works in one of these cities, you need a separate city withholding account — register before the first payroll run, not after it.
For a neighboring-state comparison, see the breakdown of Illinois payroll taxes 2026 — similarly flat structure, different SUI mechanics.
"The flat 4.05% rate is Michigan's gift to small business owners — one number, no brackets, no guessing. The SUI system is where you need to stay sharp."
Key Deadlines & Filing Checklist for 2026
A missed Michigan deposit triggers a 5% penalty plus daily interest. The rhythm is entirely predictable — the only employers who get hit are those who fail to build it into their calendar. Also track the Q4 payroll deadlines for 2026; year-end stacks Form 5081 and W-2 filing on top of the usual quarterly returns.
- SUI Form UIA-1028 — Quarterly: April 30, July 31, October 31, January 31
- State income tax withholding deposit — Monthly filers: 20th of the following month. Quarterly filers: last day of the month following the quarter
- Annual reconciliation Form 5081 — Due February 28, 2027
- W-2s to employees — January 31, 2027 (federal requirement; Michigan follows)
- W-2s filed with Michigan Treasury — January 31, 2027, via MTO
- Federal Form 941 — Quarterly; see the Form 941 guide for exact due dates
Missing SUI deposits. Because it's employer-paid and invisible on pay stubs, new employers treat it as an afterthought — then discover the UIA charges interest from the first day a payment is late. Set a calendar reminder for the 25th of each quarter-end month: that's a five-day buffer before the deadline. See common payroll mistakes to avoid for the full rundown of traps that catch small Michigan employers off guard.
One pattern repeats constantly among first-time Michigan employers: they configure MTO correctly for state income tax withholding, then forget to register with the UIA at all. Three quarters later, penalties arrive. Register for both systems before processing a single paycheck. How to run payroll for small business walks the complete setup sequence from registration to first payday.
Three numbers define Michigan payroll in 2026: 4.05% withheld from employees for state income tax, $9,500 SUI wage base, ~2.7% SUI rate for new employers. File income tax through MTO, SUI through MiWAM, and never miss the quarterly Form UIA-1028 deadlines. Operating in Detroit or another city with a local income tax? Add that withholding account from day one.
Frequently Asked Questions
What is the Michigan state income tax withholding rate for 2026?
Michigan uses a flat 4.05% rate on all employee wages. No brackets. A $25,000 earner and a $250,000 earner are withheld at the same percentage. The rate was set under Public Act 4 of 2023 and applies for the 2026 tax year.
What is the Michigan SUI wage base and rate for new employers in 2026?
The SUI taxable wage base is $9,500 per employee in 2026. New Michigan employers are generally assigned roughly 2.7% by the Unemployment Insurance Agency, though this can vary slightly by industry. Experienced employers receive a rate between 0.06% and 10.3% based on layoff history and reserve balance.
Does Michigan have a city payroll tax I need to withhold?
Yes — 24 Michigan cities levy their own income taxes. Detroit charges 2.4% for residents and 1.2% for non-residents working in the city. Grand Rapids, Lansing, and Flint have similar split-rate structures. If any employee works in one of these cities, register with that city separately and remit city withholding alongside state withholding.
When are Michigan W-2s due?
W-2s must reach employees and be filed with the Michigan Department of Treasury by January 31, 2027, for the 2026 tax year. Michigan follows the federal deadline. File through Michigan Treasury Online (MTO).
Stop tracking Michigan payroll deadlines manually.
PayHRoll calculates Michigan state withholding, SUI, and federal taxes automatically — and sends deadline reminders before penalties kick in.
See How PayHRoll Works for Small Businesses →Bottom Line
Michigan's 2026 payroll tax picture is straightforward compared to many states — a flat 4.05% income tax rate, a $9,500 SUI wage base, and federal alignment on most deadlines. But "straightforward" still means quarterly deposits, annual reconciliations, W-2 filings, and city withholding for any of the 24 taxing municipalities.
Small business owners who stay on top of these obligations avoid the penalties that quietly compound — late deposit fees start at 2% and climb to 15% within 16 days. Getting the math right on each paycheck is the first line of defense.