Iowa State Tax Guide (2026)

Completed transition to a flat tax effective 2026. Rate cited as 3.9% (Iowa Code § 422.5) but Tax Foundation lists 3.8% — verify the exact 2026 flat rate. Has an inheritance tax (phasing out).

Income tax structureflat

Top marginal rate3.9%

Flat rate3.9%

Local income taxNone

Reciprocity agreementsNone listed

Convenience-of-employer ruleNo

Community property stateNo

State estate / inheritance taxYes

QSBS conformityunknown

⚠ Some figures for Iowa are not yet fully verified. Treat as indicative and confirm with the Iowa Department of Revenue before relying on them.

Why it matters: State income tax is only part of the picture. Residency, sourcing of income, credits, and local taxes change the effective burden. Use the state income tax estimator for a number, and check reciprocity and convenience-rule status before a move or remote-work arrangement.

This guide summarizes structural facts for planning. It is not a substitute for the official Iowa tax code or a licensed preparer.

Not tax, legal, or financial advice

FiscTalk provides general educational information from public sources. Tax outcomes depend on your full facts, filing history, and jurisdiction-specific rules that change yearly. Before filing or making decisions, consult a licensed CPA, EA, or attorney. FiscTalk is not a fiduciary and is not affiliated with the IRS or any state agency.

Sources & methodology

Figures as of: 2026-08-09

Tax Foundation — State Individual Income Tax Rates and Brackets, 2026 — Tax Foundation

By: FiscTalk Editorial TeamMedically/factually reviewed by: External Tax Reviewer (CPA, licensed)Published: 2026-08-09Last reviewed: 2026-08-09