Iowa State Tax Calculator 2026
Estimate your Iowa state income tax and take-home pay for tax year 2026.
Last updated: November 2025 · Source
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Iowa 2026 tax overview
Flat 3.8% per IDR Oct 2025 announcement; conforms to federal std deduction.
Breakdown
Iowa income tax brackets, 2026
Iowa charges one rate on all taxable income. Figures are for single filers unless the state uses one schedule for all statuses.
| Taxable income | Rate | Tax on this bracket |
|---|---|---|
| Over $0 | 3.80% | 3.80% of everything above $0 |
Iowa conforms to the federal standard deduction: $16,100 single, $32,200 married filing jointly for 2026.
What this calculator does not include
Most Iowa school districts levy a surtax calculated as a percentage of your state income tax, commonly 0% to 20%.
Frequently Asked Questions
What are the 2026 Iowa income tax rates?
Iowa charges a flat 3.80% on taxable income for 2026. Flat 3.8% per IDR Oct 2025 announcement; conforms to federal std deduction.
At what income does the top Iowa tax rate start?
Iowa has a single rate, so it applies from the first dollar of taxable income above the standard deduction. There is no higher bracket to reach.
What is the 2026 Iowa standard deduction?
Iowa conforms to the federal standard deduction, which is $16,100 single and $32,200 married filing jointly for 2026 under IRS Rev. Proc. 2025-32.
Are there local income taxes in Iowa?
Yes. Most Iowa school districts levy a surtax calculated as a percentage of your state income tax, commonly 0% to 20%.
Does Iowa have tax reciprocity with neighbouring states?
Yes. Iowa has reciprocal agreements with Illinois. If you live in one of those states and work in Iowa, you file and pay only where you live, and you give your employer the relevant non-residence certificate so Iowa tax is not withheld. Without that form the tax is withheld anyway and you have to file a Iowa return to get it back.
Does Iowa tax Social Security and retirement income?
Iowa does not tax Social Security, and from 2023 it exempts all retirement income for filers 55 and over, pensions, IRAs and 401(k)s included.
What surprises people most about Iowa income tax?
Iowa completed a rapid move from nine brackets to a single flat rate in the space of four years.