How a Iowa paycheck is built
Every Iowa worker pays federal income tax, calculated on the W-4 you submitted to your employer using the IRS Publication 15-T tables. Federal income tax is followed by FICA: 6.2 percent Social Security up to the annual wage base, plus 1.45 percent Medicare on every dollar. The 0.9 percent Additional Medicare Tax applies once year-to-date wages cross $200,000 single or $250,000 married filing jointly.
Iowa adds progressive state income tax. The bracket you fall into depends on filing status and taxable income. Verify current brackets with the Iowa Department of Revenue.
Local taxes: Iowa has cities or counties that levy local income tax on top of state tax. Common examples are noted on the local-tax page.
What changed recently in Iowa
- Flat 3.8% rate effective 2025.
- Standard deduction increased.
- Federal income tax deduction on Iowa return phased out.
Iowa payroll quirks workers should know
- Iowa W-4 form for state withholding.
- No city or county income tax.
Example breakdown
A hypothetical Iowa worker on a $65,000 annual salary, paid bi-weekly, single filer, no extra adjustments. Educational only, your real paycheck differs.
| Gross (bi-weekly) | $2,500.00 |
| Federal income tax | -$216.15 |
| Social Security (6.2%) | -$155.00 |
| Medicare (1.45%) | -$36.25 |
| Iowa state tax | -$137.50 |
| Estimated take-home | $1,955.10 |
Run your own numbers in the Iowa paycheck calculator.