Iowa state income tax on your paycheck
Iowa applies a flat 3.80% income tax. Here is how it appears on your pay stub.
How Iowa state tax works in 2025
Iowa uses a flat 3.80% rate on most wage income, applied after any state-level standard deduction or allowances.
Moved to a flat tax in 2025.
Iowa official sources
Official sources
- IRS Publication 15-T, Federal Income Tax Withholding Methods — IRS · 2025 · last verified 2025-04-01
- IRS Topic 751 — Social Security and Medicare Withholding Rates — IRS · 2025 · last verified 2025-04-01
- SSA — Contribution and Benefit Base — SSA · 2025 · last verified 2025-04-01
- U.S. DOL — Overtime Pay (FLSA) — DOL · last verified 2025-04-01
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