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Iowa state income tax on wages

Iowa taxes individual income using a flat rate structure. Afterax does not calculate Iowa state liability. Use this profile to understand the structure, then model the federal result with the income tax or take home pay calculator and prepare the state return separately.

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How Iowa treats wage income

Iowa taxes individual income through a flat rate structure, so wage income can be subject to state tax. The exact liability depends on state deductions, exemptions, credits, residency, and local taxes, which is why Afterax keeps this page as an information profile.

Rate structureFlat rate
Wages taxed at the state levelYes
Local tax riskLimited or narrow local exposure
Afterax supportProfile only, no state calculation

Important context before you rely on this profile

  • The statewide rate is 3.8%, with a federal-sized deduction and credit-based personal relief.
  • A local school district surtax can apply.
  • Afterax currently provides a profile only and does not calculate this state liability.
  • Local wage or income taxes may apply in parts of this jurisdiction.

Model the federal result next

Federal income and payroll tax apply in every state. Enter W-2 wages in the federal calculators, then handle Iowa treatment separately using the caveats above.

Sources

Tax Foundation: 2026 state individual income tax structures

Cross-state source published 2026-02-17. Profile reviewed 2026-07-24.

Frequently asked questions

Does Iowa tax W-2 wage income?

Iowa taxes individual income through a flat rate structure, so wage income can be subject to state tax. The exact liability depends on state deductions, exemptions, credits, residency, and local taxes, which is why Afterax keeps this page as an information profile.

Does Afterax calculate my Iowa state tax?

Afterax does not calculate Iowa state liability. Use this profile to understand the structure, then model the federal result with the income tax or take home pay calculator and prepare the state return separately.

Do local income taxes apply in Iowa?

Yes, local exposure is possible: limited or narrow local exposure. Check the city, county, and school district rules for the specific work and residence location.