Illinois Paycheck Calculator
Estimate Illinois net pay with flat state tax and federal withholding
Tax and payroll data last updated: July 2026. Sources & methodology.
Illinois Paycheck Details
Illinois uses a flat individual income tax rate. Chicago and other local taxes are not modeled on this page. Illinois Department of Revenue — tax rates ↗.
Illinois Net Pay
per bi-weekly paycheck
Gross Pay | $5,000.00 |
Federal Tax | −$766.69 |
Illinois Tax | −$216.85 |
FICA | −$382.50 |
Net Pay | $3,633.96 |
Planning estimate only — not employer exact withholding. Federal tax uses IRS 2026 brackets ↗ and FICA follows the SSA wage base ↗. Illinois state tax is estimate-level on this page; local payroll taxes are excluded unless modeled separately. See Sources & methodology for all citations.
How this is calculated
Illinois taxes individual income at a flat rate published by the Illinois Department of Revenue. This page applies that estimate-level state rate on top of 2026 federal brackets and FICA.
Many Illinois municipalities levy a local income tax, especially in the Chicago area. Those local lines are not included here — use this page for statewide planning, not a Chicago exact check.
The result is an estimate for budgeting, not a substitute for your employer's IL-W-4 withholding tables.
Official references are listed on our data sources & methodology page. Compare with the general paycheck calculator to switch states quickly.
Net pay = gross pay - federal estimate - Illinois state estimate - FICA - pre-tax deductions
Numbers and assumptions are documented on our Sources & methodology page.