Iowa Income Tax Calculator
Calculate your Iowa state income tax alongside federal tax. See the full bracket breakdown, effective rate, and combined tax liability.
Last updated: · Tax Foundation (2025 state brackets) + IRS Rev. Proc. 2025-32 (2026 federal)
On a $75,000 salary in Iowa (single filer, 2025), your estimated state income tax is $2,802.42 (3.7% effective rate). Combined with federal tax of $7,670.00, your total income tax is $10,472.42 (14.0% combined effective rate). Iowa uses a flat tax rate of 3.85%. Source: Tax Foundation, state revenue department.
Iowa Deduction: $2,210.00
Standard deduction: $2,210.00
Flat rate of 3.85% for 2025. Previously had up to 9 brackets. Rate continues to decrease annually.
Federal estimates use 2026 IRS brackets. State estimates use 2025 state rate data.
Results
Iowa Tax Bracket Breakdown
| Rate | Range | Tax |
|---|---|---|
| 3.85% | $0 – ∞ | $2,802.42 |
| Total Iowa Tax | $2,802.42 | |
Compare Iowa with Other States
How This Is Calculated
Iowa levies a flat income tax rate of 3.85% on all taxable income.
After applying the state deduction of $2,210.00, the tax is: (Income − Deduction) × 3.85%
Data source
State bracket data from the Tax Foundation (2025 State Individual Income Tax Rates and Brackets). Cross-referenced with the Iowa revenue department. Federal brackets from IRS Rev. Proc. 2025-32 (2026).
Frequently Asked Questions
- How much is Iowa income tax on $75,000?
- On a $75,000 salary in Iowa, you would owe approximately $2,802.42 in state income tax (3.7% effective rate) plus $7,670.00 in federal income tax, for a combined total of $10,472.42 (14.0% combined effective rate).
- What is the Iowa income tax rate for 2025?
- Iowa has a flat income tax rate of 3.85%. All taxable income is taxed at the same rate. Flat rate of 3.85% for 2025. Previously had up to 9 brackets. Rate continues to decrease annually.