Iowa paycheck calculator
Iowa taxes wages at a flat rate. This estimate uses 3.8 percent.
The result appears here.
Worked example
A single filer in Iowa with $75,000 of wages uses the 2026 standard deduction of $16,100 before federal bands. Social Security is 6.2 percent up to the $184,500 wage base. Medicare is 1.45 percent. The state line uses the estimate described above.
Source for federal bands: IRS, tax year 2026 inflation adjustments. Source for the wage base: Social Security Administration.