Iowa State Income Tax Calculator
Calculate your 2026 Iowa state income tax. See your bracket breakdown, effective rate, and how Iowa compares to neighboring states.
Your Tax Inputs
Full-year residents only; filers under 65, not blind and not claimable on another return. Eligible pre-tax wage deductions only. No retirement, business income, QBI, NOLs, Schedule 1-A deductions or special state adjustments. Enter itemized deductions after applicable limits. Separate state credits are excluded except Iowa ordinary exemption credits. Other facts require a separate calculation.
The annual amount is gross income minus entered pre-tax deductions and modeled federal and state income tax. Monthly and weekly amounts divide it by 12 and 52. These allocations exclude Social Security and Medicare (FICA), local taxes, other payroll taxes, and unmodeled paycheck deductions. They do not estimate paycheck take-home or actual withholding.
Effective State Income Tax Rate vs Neighboring States
About Iowa state taxes (Tax year 2026)
Iowa transitioned to a flat income tax of 3.8% in 2026, down from a progressive system. This is the result of major tax reform legislation passed in 2022 that phases in rate reductions over several years.
Groceries are exempt from sales tax. Prescription drugs are exempt.
Iowa's new 3.8% flat rate is below the national average, a significant improvement from its previous top rate of 3.8% that existed just a few years ago.
Filing in Iowa: returns for tax year 2026 are administered by the Iowa Department of Revenue and are generally filed in 2027 by the federal April deadline unless Iowa declares a state-specific extension. Tax type on this return: Flat. Top marginal rate: 3.8%. State sales-tax rate: 6%. For the most current contact info, see the Federation of Tax Administrators directory.
Iowa — What is Iowa's income tax rate? Iowa levies a flat income tax of 3.8% on taxable income for 2026.
Iowa — Does Iowa tax groceries? No, groceries (unprepared food) are exempt from Iowa's 6% state sales tax.
Iowa — How has Iowa's tax system changed? Iowa passed major tax reform in 2022 that transitioned from a progressive system (4 brackets, top rate 6%) to a flat 3.8% rate by 2026. The reform also reduced corporate rates.
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Keep the same state in view while you compare tax, benefits, and wage rules across Calculover.
How this page is reviewed
See methodology, assumptions & sources
| Risk tier | High YMYL |
|---|---|
| Author | Calculover Editorial Team Tax education |
| Editorial owner | Calculover Tax & Payroll Desk State-tax methodology owner |
| Reviewer | Calculover Editorial Review Government-source and limitation review |
| Last reviewed | 2026-11-06 |
| Last verified | 2026-11-06 |
| Data effective date | 2026-01-01 |
| Jurisdiction | Iowa |
Methodology
These pages estimate annual state income tax for the selected 2026 jurisdiction and filing status. The route's coverage panel identifies the supported income basis, deductions, credits and exclusions.
Assumptions
- Enter the income basis and eligible pre-tax deductions requested by the calculator; gross wages, federal AGI and state AGI are not interchangeable.
- Some methods require confirmed state facts or explicit projection assumptions. An unavailable component is not zero tax.
Limitations
- The estimate excludes unmodeled income, adjustments, local taxes and special filing situations. Utah's indexed-credit assumptions remain provisional while final 2026 instructions are pending.
- Annual liability differs from withholding and paycheck take-home. Confirm the current official forms and source versions for a complete return.
Sources
- State Tax Rates, Federation of Tax Administrators
- State Individual Income Tax Rates and Brackets, Tax Foundation
- State Government Resources, Internal Revenue Service
Professional guidance: This page is for state-tax education only and is not tax, legal, financial, or investment advice. State tax decisions and multi-state filing should be reviewed with a CPA or enrolled agent licensed in the relevant states.