Iowa Income Tax Calculator 2026
Estimate your 2026 Iowa state and federal income tax. Includes Iowa tax brackets, a worked dollar example, and filing tips.
Key Tax Facts: Iowa
- Iowa filing deadline is April 30, not April 15
- Flat 3.8% rate in 2025, phasing down to 3.5% by 2026
- Retirement income (pension, 401k, IRA) is fully exempt starting 2023
- Social Security exempt for most filers
Iowa State Income Tax Overview
Iowa has a flat income tax rate of 3.8% for 2025, down significantly from prior years as the state phases in tax cuts through 2026. Iowa previously used a complex graduated system with many brackets, but reforms signed in 2022 are simplifying the system considerably. Iowa exempts Social Security income from state income tax and offers retirement income exemptions for qualifying taxpayers 55 and older. The state allows a standard deduction of $2,210 for single filers and $5,450 for married couples filing jointly. Iowa also permits deductions for federal income taxes paid under certain circumstances.
Iowa Income Tax Rate (2026) projected
Iowa uses a flat income tax rate -- the same percentage applies to all taxable income regardless of how much you earn.
Source: Iowa Department of Revenue
What a Iowa Resident Actually Pays: A Worked Example
| Taxable Income | $65,000.00 |
| Iowa Flat Rate | 3.8% |
| Estimated State Tax | $2470.00 |
| Effective Rate | 3.8% |
Enter Your Tax Information
Frequently Asked Questions -- Iowa Income Tax
Does Iowa have a state income tax?
Yes. Iowa imposes a state income tax with a flat rate of 3.8%. This is separate from your federal income tax obligation.
What is the Iowa income tax rate for 2026?
Iowa uses a flat income tax rate of 3.8% on all taxable income, regardless of income level or filing status.
Do I have to file a Iowa state tax return?
Most full-year Iowa residents with income above the state filing threshold must file a state return. Check the Iowa Department of Revenue for current thresholds and requirements.
How accurate is this Iowa state tax estimate?
This is a planning estimate. The state result uses Iowa's published brackets but does not account for all state deductions, credits, exemptions, or local taxes. Verify with official Iowa tax forms or a qualified tax professional.
Does this calculator include federal income tax?
Yes. The results show your estimated Iowa state income tax and your federal income tax using 2026 federal brackets (projected until the IRS publishes official 2026 figures) -- your full combined picture in one place.
Where can I find official Iowa tax forms?
Official forms, instructions, and filing guidance are available at the Iowa Department of Revenue.
What is the sales tax rate in Iowa?
Iowa's combined state and average local sales tax rate is 6.94%. This is separate from income tax and applies to most retail purchases -- use our sales tax calculator to check a specific purchase.
When are Iowa 2026 state taxes due?
2026 taxes are generally filed in 2027. The Iowa filing deadline is April 30, 2027 -- note this differs from the federal deadline of April 15, 2027, so mark both dates.
Understanding Your Iowa Tax Estimate
Your results combine two separate bills: federal tax owed to the IRS, and Iowa state tax owed to the Iowa Department of Revenue. The state return is filed separately from your federal Form 1040, with a state filing deadline of April 30. For the mechanics of how bracket math actually works -- why your effective rate is almost always lower than your top bracket -- see our marginal vs. effective tax rate guide.
Lowering Your Iowa Bill
Pre-tax retirement contributions reduce your federal and Iowa taxable income in the same move -- see our 401(k) contribution limits and HSA limits guides for the current caps. Beyond that, Iowa-specific credits and deductions that don't exist at the federal level are listed at the Iowa Department of Revenue -- worth checking, since these are easy to miss if you only look at federal guidance.
Combined Sales + Income Tax Picture
Iowa's combined state-plus-average-local sales tax rate is 6.94%. If you're self-employed, that's an added layer on top of income tax -- our self-employment tax calculator covers the SE-specific piece separately.
Disclaimer: Estimates for educational purposes only. State tax results are approximations based on published bracket data and do not account for all deductions, credits, exemptions, local taxes, or individual situations. Not tax, legal, or financial advice. Consult the Iowa Department of Revenue or a qualified tax professional for guidance specific to your situation.