Illinois has a flat 4.95% income tax. Your take-home pay is your gross salary minus federal income tax, FICA, and Illinois state tax. Enter your salary below to estimate your net paycheck.
Single-filer estimate using 2026 federal brackets, the standard deduction, and FICA; state tax is a representative estimate. For a full breakdown with filing status and deductions, use the take-home paycheck calculator.
Your gross salary is never what lands in your account. Three deductions stand between gross and net pay. First, federal income tax, withheld according to the IRS tax brackets and your W-4. Second, FICA — a flat 7.65% split between Social Security (6.2%, up to an annual wage base) and Medicare (1.45%, with no cap). Third, Illinois state income tax: Illinois levies a flat 4.95% income tax. On top of those, many employers also withhold pre-tax amounts for health insurance and retirement, which actually lower your taxable income.
Start with your annual salary and subtract the three deductions above to get net annual pay, then divide by the number of pay periods in the year — 26 for bi-weekly, 24 for semi-monthly, 12 for monthly. The estimator above does exactly this using 2026 federal brackets and the standard deduction. Remember it's a single-filer estimate: marriage, dependents, 401(k) contributions, and HSA or health-premium deductions can all change the number, usually increasing your take-home by lowering taxable income.
Illinois uses a flat 4.95% rate, so every dollar of taxable income is taxed the same — simpler to predict than the graduated systems used by states such as California or New York. The table below estimates annual take-home pay at common salary levels in Illinois, after its 4.95% representative state rate.
| Gross salary | Federal tax | FICA | IL state tax | Est. take-home |
|---|---|---|---|---|
| $30,000 | $1,562 | $2,295 | $1,485 | $24,659 |
| $50,000 | $3,962 | $3,825 | $2,475 | $39,739 |
| $75,000 | $8,114 | $5,738 | $3,713 | $57,436 |
| $100,000 | $13,614 | $7,650 | $4,950 | $73,786 |
| $150,000 | $25,247 | $11,475 | $7,425 | $105,853 |
Single-filer estimates using 2026 federal brackets and the standard deduction; your actual withholding varies with filing status, pre-tax benefits, and any local taxes. Enter your own salary in the estimator above for a personalized figure.
Illinois applies a flat 4.95% income tax. A flat tax means the same percentage applies to taxable income at every level, which makes withholding simple and predictable. The estimator applies a representative rate; your real withholding depends on your income, filing status, allowances, and any state-specific deductions or credits.
Take-home pay is only half the budgeting picture. See how much sales tax you'll pay locally with the Illinois sales tax guide, model a raise with the salary calculator, or estimate your full tax bill with the income tax calculator. For the most detailed paycheck breakdown, the take-home paycheck calculator lets you add filing status and deductions.
Illinois has a flat 4.95% income tax. The estimator above applies a representative effective rate; your exact withholding depends on your income, filing status, and deductions.
Three things: federal income tax (by bracket), 7.65% FICA (6.2% Social Security + 1.45% Medicare), and Illinois state income tax up to 4.95%. The total is your gross minus take-home.
Start with gross salary, subtract federal income tax, FICA, and Illinois state tax. The calculator above does all three and shows your net pay per year, month, and paycheck.
As a single filer, expect roughly $45,000–$48,000 after federal tax, FICA, and Illinois state tax — enter $60,000 above for a precise estimate.