Iowa Income Tax Calculator 2026
Estimate your Iowa (IA) income tax for 2026. Iowa has a 3.8% flat state income tax. Enter your income below and click “Calculate Taxes” for an instant breakdown.
Note: Transitioning to flat rate; deductions differ
Tax Information
Enter your income to estimate your tax liability
Iowa Income Tax Overview
Iowa has a flat income tax rate of 3.8%. This means all taxable income is taxed at the same rate regardless of how much you earn.
Frequently Asked Questions
- What is the Iowa income tax rate?
- Iowa has a flat income tax rate of 3.8%. All taxable income is taxed at this same rate regardless of income level.
- Does Iowa have a standard deduction?
- Iowa does not offer a state standard deduction. Your state taxable income may be based on your federal adjusted gross income.
- How is Iowa income tax calculated?
- Iowa uses a flat tax system. After subtracting your standard deduction (if applicable), your remaining taxable income is taxed at a flat rate of 3.8%, then added to your federal tax and FICA obligations.
- How do I calculate my total Iowa tax bill?
- Your total tax includes federal income tax (10%–37%), Social Security (6.2% on the first $176,100), Medicare (1.45%), and Iowa state income tax. Use our free calculator above for an instant breakdown.
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