Illinois Paycheck Calculator
Illinois withholds a flat 4.95% after your IL-W-4 exemptions. Estimate your state and federal take-home pay with the official 2026 IL-700-T method.
Your estimated paycheck
| Per paycheck | Per year | |
|---|---|---|
| Gross pay | $0.00 | $0.00 |
| Federal income tax | $0.00 | $0.00 |
| Social Security (6.2%) | $0.00 | $0.00 |
| Medicare (1.45%) | $0.00 | $0.00 |
| State tax | $0.00 | $0.00 |
| Net (take-home) pay | $0.00 | $0.00 |
Pre-tax deductions per paycheck: $0.00 (reduce income-tax wages, not FICA). Total tax is about 0% of gross pay. Results update as you type.
Paycheck taxes in Illinois
Illinois taxes wages at a flat 4.95%. Withholding follows Booklet IL-700-T: your pay is first reduced by an exemption of $2,925 per allowance claimed on Form IL-W-4 (plus $1,000 for each additional allowance on Line 2), prorated across your paychecks, and the rest is taxed at 4.95%. With one allowance, a $1,000 weekly paycheck has about $46.72 of Illinois tax withheld. Enter your IL-W-4 Line 1 allowances in the form above to match your own pay stub.
Illinois has no city income taxes — not even in Chicago — so state withholding is the only Illinois tax on a paycheck. Illinois also has reciprocal agreements with Wisconsin, Michigan, Iowa, and Kentucky: if you live in one of those states and work in Illinois, you can file Form IL-W-5-NR to stop Illinois withholding and pay only your home state.
Frequently asked questions
- What is the Illinois income tax rate on paychecks?
- A flat 4.95% of wages after your IL-W-4 exemption allowance. The rate has been 4.95% since July 2017.
- How much Illinois tax comes out of a $1,000 weekly paycheck?
- With one allowance: your $52,000 of annual wages minus the $2,925 exemption leaves $49,075; 4.95% of that is $2,429.21 a year, or about $46.72 per week. Claiming more allowances lowers the withholding.
- What allowances should I claim on Form IL-W-4?
- At minimum, claim one for yourself. You may add one for a spouse and each dependent, plus extra allowances if you are 65 or older or legally blind (the Line 2 allowances, worth $1,000 each). This calculator's allowances field covers the Line 1 allowances at $2,925 each.
- Does Chicago tax paychecks?
- No. Neither Chicago nor Cook County nor any Illinois municipality levies a local income tax.