Illinois Paycheck Calculator
Estimate your Illinois take-home pay in seconds. This free Illinois paycheck calculator breaks down federal income tax, Social Security, Medicare and Illinois' flat 4.95% state tax from your gross salary, with a full per-paycheck breakdown for 2026.
Calculate your Illinois take-home pay
How your Illinois paycheck is calculated
Your paycheck is your gross pay minus federal income tax and FICA. For 2026, this calculator applies the seven federal brackets (10% to 37%) to your taxable income, which is your gross pay minus any pre-tax deductions and the $16,100 single standard deduction. FICA adds Social Security at 6.2% (on wages up to the $184,500 cap) and Medicare at 1.45% on all wages, with an extra 0.9% above $200,000.
Illinois charges a flat 4.95% individual income tax — the same rate at every income level. There is no standard deduction; instead, this Illinois paycheck tax calculator subtracts the $2,925 personal exemption allowance for 2026 before applying the rate (the allowance phases out above $250,000 of income for single filers). Combined, federal tax, FICA and the flat state tax produce the net pay this Illinois paycheck calculator shows — a salary calculator Illinois workers can check each payday.
Illinois take-home pay by salary (2026)
The table shows estimated annual and biweekly take-home pay for a single filer, the way an Illinois salary tax calculator would for common income levels. Because Illinois' tax is flat, your marginal state rate stays 4.95% no matter how much you earn.
| Annual gross | Annual take-home | Per biweekly paycheck |
|---|---|---|
| $40,000 | $32,485 | $1,249 |
| $60,000 | $47,565 | $1,829 |
| $80,000 | $61,295 | $2,357 |
| $100,000 | $74,375 | $2,861 |
How to use this calculator
- Enter your gross salary. Type your annual gross income into the Illinois salary calculator. Use your total pay before any taxes or deductions.
- Choose how often you are paid. Enter your pay periods per year — 52 for weekly, 26 for biweekly, 24 for semi-monthly, or 12 for monthly. Hourly workers can use this paycheck calculator Illinois wide too — multiply your hourly rate by hours worked per year, then enter the total.
- Add any pre-tax deductions. Include annual 401(k) or pre-tax health contributions so the calculator lowers both your federal and Illinois taxable income.
- Calculate your take-home pay. Press Calculate to see your net pay per paycheck, plus a breakdown of federal tax, FICA and Illinois state tax withheld.
Frequently asked questions
Is this Illinois paycheck calculator free?
Yes. It is free, needs no sign-up, and runs entirely in your browser.
What is Illinois' income tax rate for 2026?
Illinois has a flat individual income tax of 4.95% for 2026. Instead of a standard deduction, each taxpayer gets a $2,925 personal exemption allowance, which is not allowed above $250,000 of income for single filers.
How accurate is this Illinois salary calculator?
It uses 2026 federal brackets, the $16,100 federal standard deduction, the flat 4.95% Illinois rate with the $2,925 exemption allowance and current FICA rates, assuming single filing. Treat results as an estimate.
Can I use this as an Illinois paycheck calculator for hourly pay?
Yes. Convert hourly to annual first (hourly rate times hours worked per year), then enter that figure as your gross income.
What is the difference between gross and net pay?
Gross pay is your salary before deductions. Net, or take-home, pay is what remains after federal tax, FICA and Illinois state tax are withheld.