Iowa Tax Guide (2026)
Comprehensive statutory analysis of Iowa individual income tax rates, Department of Revenue filing forms, extension guidelines, telecommuting sourcing rules, and pass-through entity tax provisions.
Key Statutory Tax Parameters (Iowa, 2026)
2026 Legislative & Statutory Highlights
Iowa has completed its transition from a steep graduated tax system into a single flat personal income tax rate of 3.80%. Iowa also completely exempts retirement income (pensions, 401k withdrawals, annuities) for taxpayers aged 55 and older.
Iowa operates a flat personal income tax schedule with a statutory flat rate of 3.9%. Tax parameters are indexed annually or enacted through state legislative sessions. Taxpayers should ensure that adjustments for federal bonus depreciation, Section 179 expensing, and Net Operating Loss (NOL) carryforwards follow Iowa's specific rolling or static Internal Revenue Code conformity date.
Filing Forms, Deadlines & Extension Guidelines
Multi-State Workers & Telecommuting Sourcing Rules
Iowa taxes residents on worldwide income. Iowa maintains a reciprocal income tax agreement with Illinois: compensation earned in Illinois by an Iowa resident is taxed only by Iowa, and vice versa.
Pass-Through Entity (PTE) Tax & Small Business Rules
Iowa enacted an elective Pass-Through Entity Tax (SF 262) enabling small business entities to pay tax at 3.80% at the entity level to bypass federal SALT caps.
Estate & Inheritance Tax
Iowa has fully phased out its state inheritance tax, reaching 0% for deaths occurring on or after January 1, 2025. Iowa levies no state estate tax.
Local & County Taxes
Local school district surtaxes and emergency medical services (EMS) surtaxes apply in certain jurisdictions, calculated as a percentage of state tax.
Worked Tax Example: $120,000 W-2 Earner in Iowa
An individual in Des Moines earning $120,000 pays approximately $4,560 in Iowa state income tax under the consolidated 3.80% flat tax system.
Calculate Your 2026 Iowa Tax Liability
Enter your taxable income, filing status, and municipal details below to calculate your customized state tax liability and print your executive summary.
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).
⚠ Some figures for this state are not yet fully verified — confirm with the state Department of Revenue before relying on them.
2026 Executive Iowa State Tax Audit Summary
Not tax, legal, or financial advice
FiscTalk provides general educational information from public sources. Your tax results depend on the full set of facts, your filing history, and the jurisdiction-specific rules that shift 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
Frequently Asked Questions: Iowa Taxes
Source-verified — not professional advice
Every figure on this page is checked in-house against its primary source — IRS revenue procedures and publications, state Departments of Revenue, and the text of the underlying statute — before publication. Last reviewed 2026-10-20. The full source list is at the bottom of this page. If you spot an error, see our corrections & standards policy.
Not tax, legal, or financial advice
FiscTalk provides general educational information from public sources. Your tax results depend on the full set of facts, your filing history, and the jurisdiction-specific rules that shift 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