Iowa taxes wages at a single flat rate of 3.8%, once the standard deduction (federal amount, via federal taxable income) of $16,100 is covered. Federal income tax is charged on top under its own graduated bands, so the combined bill is the number that matters. This page runs one salary through both layers and shows the federal line, the Iowa line and the payroll lines separately.
Federal and Iowa state tax plus payroll contributions, 2026 rates.
| Breakdown | Amount |
|---|
Estimates for a single employee with standard allowances, calculated in your browser. Rates checked October 2026. Not tax advice.
On $75,000 a year — about US$75,000 — the combined deductions in this model are $15,646: $7,670 of federal income tax, $2,238 of Iowa state tax and $5,738 in payroll contributions, leaving take-home pay of $59,354 (an effective rate of 20.9%). Change the salary in the calculator to run any other figure through the same two layers.
The state tax starts from taxable income: gross pay minus the standard deduction (federal amount, via federal taxable income) of $16,100. The bands in the table below then apply to that taxable figure — a single rate of 3.8% at every level.
The federal layer is the same model as the United States calculator: a standard deduction (single filer) of $16,100, federal bands running from 10% to 37%, plus the employee payroll contributions Social Security, Medicare, Additional Medicare Tax. The United States calculator page sets out the federal notes and simplifications in full.
| Taxable income band | Rate |
|---|---|
| Up to $0 | 3.8% |
Bands apply to taxable income — gross pay after the standard deduction (federal amount, via federal taxable income) of $16,100. Federal tax is charged on top, on the federal bands shown on the United States page.
| Gross salary | Federal tax | Iowa tax | Payroll | Take-home | Effective rate |
|---|---|---|---|---|---|
| $50,000 | $3,820 | $1,288 | $3,825 | $41,067 | 17.9% |
| $75,000 | $7,670 | $2,238 | $5,738 | $59,354 | 20.9% |
| $100,000 | $13,170 | $3,188 | $7,650 | $75,992 | 24.0% |
| $150,000 | $24,734 | $5,088 | $11,475 | $108,703 | 27.5% |
Salary levels are the local equivalents of US$50,000 / $75,000 / $100,000 / $150,000 at the ECB reference rate of 28 October 2026, rounded. Payroll combines the federal employee contributions listed below.
| Contribution | Rate | Applies from | Applies up to |
|---|---|---|---|
| Social Security (federal) | 6.2% | First $0 | $184,500 |
| Medicare (federal) | 1.45% | First $0 | No cap |
| Additional Medicare Tax (federal) | 0.9% | $200,000 | No cap |
Employee side only. Employer contributions, where they are charged, do not come out of your pay and are not in these results.
The full federal model, with its brackets and worked examples, is on the United States income tax calculator.
The country calculator: federal bands, payroll contributions and worked examples for the whole of United States.
Open the United States calculator →Every state (and the District of Columbia) Krynto models, with its top rate and standard allowance.
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