Your Pay Details
Your Take-Home Pay
| Gross Pay | $0 |
| Federal Income Tax | –$0 |
| Social Security (6.2%) | –$0 |
| Medicare (1.45%) | –$0 |
| Iowa State Tax | –$0 |
| Take-Home Pay | $0 |
How Your Iowa Paycheck Works
Iowa phased in a flat income tax, reaching 3.8% for 2025. This is a significant reduction from Iowa's previous graduated system with rates up to 8.53%.
Federal Income Tax
Calculated using 2025 federal brackets from 10% to 37%, applied to taxable income after the standard deduction.
Social Security
6.2% of gross pay up to $176,100. Funds the Social Security retirement and disability program.
Medicare
1.45% of all gross pay. High earners over $200K pay an additional 0.9% surtax.
Iowa State Tax (3.8%)
Iowa applies a flat 3.8% rate to taxable income after the state standard deduction. Simple and predictable.
Major Cities in Iowa
Whether you live in Des Moines, Cedar Rapids, or anywhere else in Iowa, state tax rates apply uniformly — your city does not change your paycheck calculation. Local taxes and cost of living vary by city, as shown below.
* Population from U.S. Census estimates. Home prices and rent are 2023–2024 estimates. Local income tax applies to residents unless noted.
Frequently Asked Questions
What is Iowa's state income tax rate?
Iowa has a flat 3.8% state income tax rate for 2025, continuing a multi-year phase-down from its former top rate of 8.53%.
How much of my paycheck goes to taxes in Iowa?
A single filer earning $55,000/year in Iowa pays 3.8% in state income tax plus federal taxes and FICA. Total deductions typically run 24–30% of gross pay depending on your bracket and deductions.
What is FICA and how much is it?
FICA covers Social Security (6.2% up to $176,100) and Medicare (1.45% with no cap). Together that is 7.65% of gross pay, paid by every US worker regardless of state.
How do pre-tax deductions like a 401(k) reduce my taxes?
Pre-tax deductions reduce both your federal and state taxable income. A $5,000 annual 401(k) contribution can save hundreds in combined federal and state taxes depending on your bracket.
How accurate is this calculator?
This calculator uses 2025 federal and state tax brackets. Results are estimates — your actual paycheck may vary based on W-4 elections, employer deductions, and local taxes not included here.