How Iowa Income Tax Works in 2026
Iowa taxes all income at a flat 3.8% in 2026, completing one of the most dramatic tax transformations in the country. Just a few years ago, Iowa's graduated system topped out at 8.53%, among the highest in the Midwest. The state compressed and then flattened the whole structure, so every Iowa worker now faces the same single rate.
Because the change is so recent, older Iowa tax advice is dangerously out of date. Bracket tables from the graduated era no longer apply to anything. The flat 3.8% applies to Iowa taxable income after the state's deductions, and there are no tiers, no phase-ins, and no separate schedules to choose between.
What Comes Out of Your Iowa Paycheck
An Iowa stub shows federal income tax, Social Security at 6.2%, Medicare at 1.45%, and Iowa state tax at 3.8%. There is no state disability insurance or paid leave payroll tax, and Iowa cities cannot add a local income tax, so the deduction list is short.
Pre-tax 401(k), HSA, and health premium contributions reduce Iowa taxable income along with federal, saving 3.8 cents per dollar at the state level. For Des Moines-area workers whose wages have grown while the rate fell, the combined effect is a noticeably lighter state burden than the old 8.53% era ever allowed.
Worked Example: A $75,000 Salary in Des Moines
Take a single filer in Des Moines earning $75,000 a year, paid biweekly. Federal tax is about $7,670, FICA takes $5,737.50, and Iowa's 3.8% flat tax comes to roughly $2,850 before state deductions. Here is the annual breakdown.
| Gross Pay | $75,000.00 |
| Federal Income Tax | ~$7,670.00 |
| Social Security (6.2%) | $4,650.00 |
| Medicare (1.45%) | $1,087.50 |
| Iowa State Tax | ~$2,850.00 |
| Net Annual Pay | ~$58,742.50 |
That leaves about $2,259 per biweekly paycheck against gross pay of $2,884.62, an effective total rate near 21.7%. Under the old graduated system, a $75,000 earner could have faced a top marginal rate more than twice today's flat 3.8%, which shows how far Iowa's tax code has moved.
Iowa Paycheck Details Worth Knowing
From 8.53% to 3.8% in a few years
Iowa's top rate was 8.53% as recently as the early 2020s. The phasedown to a flat 3.8% is one of the largest state tax cuts in modern history, and it is fully in effect for 2026 paychecks.
Minimum wage and overtime
Iowa follows the federal $7.25 minimum wage with no higher state floor. Overtime is time and a half past 40 hours under federal law.
No local income taxes
Des Moines, Cedar Rapids, Davenport, and every other Iowa city fund services through property and sales taxes. Your Iowa withholding is the same statewide.
Common Paycheck Mistakes in Iowa
- Using old graduated bracket tables for Iowa. They are gone; 3.8% flat is the entire system now.
- Assuming the flat rate means Iowa is now a low-tax state. At 3.8% it sits in the middle of flat-tax states, above Arizona and Indiana.
- Forgetting state deductions. The 3.8% applies to Iowa taxable income, not gross pay, so deductions still matter.
- Comparing Iowa offers to Illinois on state rate alone. Iowa's 3.8% beats Illinois' 4.95%, but total compensation and housing decide the move.
- Ignoring that federal tax and FICA did not change. Iowa's cut only affects the state line, which is the smallest of the three.
Frequently Asked Questions
What is Iowa's income tax rate in 2026?
A flat 3.8% on Iowa taxable income. The state completed its transition from a graduated system topping 8.53% to the flat rate.
Is Iowa's flat tax new?
Effectively yes. Iowa phased down from graduated brackets over several years and reached the flat 3.8% for recent tax years, fully in effect for 2026.
What was Iowa's old top tax rate?
The graduated system topped out at 8.53%, one of the highest top rates in the Midwest before the reform.
What is the minimum wage in Iowa in 2026?
It is $7.25 an hour, the federal floor. Iowa has not set a higher state minimum.
Do Iowa cities charge income tax?
No. Iowa municipalities cannot levy local income taxes on wages.
How does Iowa compare to Minnesota?
Iowa's flat 3.8% is far simpler and cheaper than Minnesota's graduated rates up to 9.85%. A $75,000 earner saves roughly $800 a year in state tax in Iowa versus Minnesota.
How accurate is this Iowa paycheck calculator?
It uses 2026 federal figures and Iowa's 3.8% flat rate. Iowa-specific deductions are not modeled, so treat the state line as approximate before deductions.
Related Iowa Tools
This page is part of the growing set of state paycheck tools on USACalculator. Compare Iowa with Illinois to the east, Minnesota to the north, and Missouri to the south, or build a matching stub with the Pay Stub Generator. For purchases, the Iowa sales tax calculator covers state and local rates.
Sources: IRS Publication 15-T, U.S. Department of Labor, Iowa Department of Revenue. Figures reflect 2026 tax law. This calculator gives an estimate for planning purposes and is not tax advice.