Iowa Income Tax (2026)

Info: Flat 3.8% for 2026 (single rate on all taxable income).

InfoVerified Aug 2, 2026

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Official source: revenue.iowa.gov →

General legal information, not legal advice — verify important decisions with a licensed attorney.

Income Tax in states bordering Iowa

The same rule in each neighboring state LawLert has verified, from that state’s own official source.

IllinoisInfo
Flat 4.95% individual income tax.
Verified May 31, 2026 · Source: tax.illinois.gov · Full Illinois rule →
MinnesotaConditional
Graduated; top rate 9.85% (2026 rates 5.35% / 6.80% / 7.85% / 9.85%). The 9.85% rate starts at $203,151 of Minnesota taxable income for a single filer and $337,931 married filing jointly. Brackets are re-indexed for inflation every year.
Verified Jul 30, 2026 · Source: revenue.state.mn.us · Full Minnesota rule →
MissouriInfo
Graduated, topping out at 4.70% on Missouri taxable income over about $9,436 for 2026 (the 2025 threshold was about $9,191); rates run 2.00%–4.70% in 0.50% steps. Brackets are indexed for inflation each year.
Verified Jul 30, 2026 · Source: dor.mo.gov · Full Missouri rule →
NebraskaInfo
Graduated individual income tax; for 2026 the top rate is 4.55% (brackets 2.46% / 3.51% / 4.55%), down from 5.20% in 2025.
Verified Jul 15, 2026 · Source: revenue.nebraska.gov · Full Nebraska rule →
South DakotaPermitted
No state individual income tax — 0% on wages and all personal income.
Verified May 31, 2026 · Source: dor.sd.gov · Full South Dakota rule →
WisconsinInfo
Graduated; top rate 7.65% (brackets 3.50% / 4.40% / 5.30% / 7.65%).
Verified May 31, 2026 · Source: revenue.wi.gov · Full Wisconsin rule →

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