Illinois Paycheck Calculator
Estimate your Illinois take-home pay after federal, state, and FICA taxes.
Illinois taxes every worker at the same flat rate, 4.95% for 2026, no matter how much you earn. There's no standard deduction, just a per-allowance exemption, which makes an Illinois paycheck one of the more predictable ones to estimate.
Enter your hourly or salary pay below and the calculator gives you your Illinois take-home pay, with federal tax, FICA, and the state's flat income tax already taken out at 2026 rates.
How Illinois paycheck tax works
Illinois has a flat income tax rate of 4.95% for 2026. Withholding uses a per-allowance exemption of $2,925 per basic (Line 1) allowance and $1,000 per additional (Line 2, age 65+/blind) allowance; there is no standard deduction. The flat 4.95% rate also applies to supplemental wages such as bonuses.
The calculator annualizes your pay and applies Illinois's 2026 flat-rate withholding on top of federal income tax and FICA. Treat the result as a close estimate; your employer may withhold from per-period tables that differ slightly.
Frequently asked questions
What is Illinois's income tax rate?
Illinois has a flat 4.95% income tax rate for 2026.
What is the Illinois exemption allowance for 2026?
$2,925 per basic personal/dependent allowance (up from $2,850 in 2025), plus $1,000 per additional age-65+/blind allowance. Illinois has no standard deduction.
How are bonuses taxed in Illinois?
Bonuses are withheld at the same flat 4.95% rate as regular wages.
Does Illinois have local income taxes?
No Illinois municipality levies a wage income tax.
Source: Illinois Dept. of Revenue, Booklet IL-700-T (2026).