Tax Bracket for Iowa (2026)
Last updated: January 15, 2026
Iowa (IA) Key Facts
Tax Structure
Progressive (4 brackets)
Top Marginal Rate
5.7%
Number of Brackets
4
Tax Year
2,026
How This Calculator Works in Iowa
This calculator shows which Iowa tax bracket your income falls into. Enter your income and filing status to see marginal and effective rates.
Iowa Overview
Iowa uses a progressive income tax system with 4 brackets ranging from 4.4% to 5.7%. Higher portions of your income are taxed at higher rates, so your effective rate is always lower than your top marginal bracket.
How Iowa Compares
Iowa's top rate of 5.7% compares to Minnesota at 9.85% and Wisconsin at 7.65%. Comparing effective rates is more meaningful than top rates alone.
| State | Top Rate | Notes |
|---|---|---|
| Minnesota | 9.85% | Minnesota has an income tax rate of 9.85%. |
| Wisconsin | 7.65% | Wisconsin has an income tax rate of 7.65%. |
| Illinois | 4.95% | Illinois has an income tax rate of 4.95%. |
Iowa's income tax rate of 5.7% compares to a national average of approximately 5.04%. This is above the national average.
Tips for Iowa Residents
- 1Iowa has a progressive income tax with 4 brackets ranging from 4.4% to 5.7%.
- 2Your marginal rate (the rate on your last dollar) is often higher than your effective rate (total tax / total income).
- 3Moving into a higher bracket only taxes the additional income at the higher rate, not your entire income.
- 4Pre-tax 401(k) and IRA contributions can keep you in a lower Iowa bracket by reducing taxable income.
- 5Compare your effective rate rather than marginal rate when evaluating Iowa's tax impact on your finances.