Iowa Paycheck Calculator 2026
State
Iowa (IA)
Tax Type
Flat Rate Tax
State Tax Rate
Flat 5.70%
Iowa State Income Tax Overview
Iowa imposes a flat state income tax rate of 5.70% on all taxable income. This means every dollar of your taxable income is taxed at the same rate, regardless of how much you earn.
How Iowa Taxes Work in 2026
Iowa levies a flat state income tax rate of 5.70% on all taxable income. A flat tax means every taxpayer pays the same percentage, regardless of income level, which simplifies tax filing. Iowa offers a standard deduction of $15,000 for single filers and $30,000 for married filing jointly. This deduction reduces your taxable income before the 5.70% rate is applied. In addition to the 5.70% state income tax, Iowa residents also pay federal income tax (10% to 37% based on income) and FICA taxes (6.2% Social Security + 1.45% Medicare).
Iowa Flat Tax Rate
Iowa applies a flat income tax rate of 5.70% on all taxable income, regardless of filing status or income level.
Standard deduction: $15,000 (single) / $30,000 (married filing jointly)