Iowa tax tables 2026
The figures set by or for Iowa for 2026: income tax brackets, payroll contributions and employer rates. Federal or national figures for the US are on the national page.
- 2026-01-01 to 2026-12-31
- USD
Income tax
Iowa income tax brackets: All filing statuses
| State taxable income, per year | Rate |
|---|---|
| Over $0 | 3.8% |
Source: Iowa Department of Revenue, Iowa Withholding Tax Information · retrieved 2026-10-16
Iowa income tax: key figures
| Item | Value |
|---|---|
| Type | Flat rate |
| Flat rate | 3.8% |
| Top rate | 3.8% |
| Standard deduction: Single | $16,100 |
| Standard deduction: Married filing separately | $16,100 |
| Standard deduction: Head of household | $24,150 |
| Standard deduction: Married filing jointly | $32,200 |
| Personal exemption credit (you and your spouse, each) (credit) | $40 |
| Dependent credit (each dependent) (credit) | $40 |
| Additional credit, age 65 or older or blind (each) (credit) | $20 |
Source: Iowa Department of Revenue, Iowa Withholding Tax Information · retrieved 2026-10-16
Employee contributions
Iowa supplemental (bonus) withholding
| Item | Value |
|---|---|
| Supplemental rate | 3.8% |
Source: Iowa Department of Revenue, Iowa Withholding Tax Information — Supplemental Wages · retrieved 2026-10-16
Employer costs
Iowa state unemployment insurance (employer)
| Item | Value |
|---|---|
| Taxable wage base (per employee, per year) | $20,400 |
| New employer rate | 1% |
| Experience-rated range: lowest | 0% |
| Experience-rated range: highest | 5.4% |
Iowa's base new-employer rate from the U.S. Department of Labor's 2026 summary. State surcharges, if any, are not included.
Source: Iowa Workforce Development, Unemployment Insurance Employer Handbook: Unemployment Insurance Taxes · retrieved 2026-10-20
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Official sources
- Iowa Individual Income Tax Withholding Formula, Effective January 1, 2026 · retrieved 2026-10-16
- 2026 IA W-4 Employee Withholding Allowance Certificate and instructions (44-019, 11/13/2025) · retrieved 2026-10-16
- Iowa Withholding Tax Information · retrieved 2026-10-16
- Iowa Workforce Development, Unemployment Insurance Employer Handbook: Unemployment Insurance Taxes · retrieved 2026-10-20
How every figure is checked: methodology. All datasets: CalcBloc data.