Illinois Paycheck Calculator
Estimate your Illinois take-home pay after federal tax, FICA, and Illinois state income tax. Enter your gross pay, filing status, and pre-tax deductions to see your net pay per paycheck.
2026 rate, standard deduction, and personal exemption verified against Tax Foundation 2026 data.
- Take-home$51,334.79 · 78.98%
- Federal tax$5,620.00 · 8.65%
- Social Security + Medicare$4,972.50 · 7.65%
- Illinois tax$3,072.71 · 4.73%
| Item | Per bi-week | % of gross |
|---|---|---|
| Gross pay | $2,500.00 | 100% |
| Federal withholding | $216.15 | 8.65% |
| Social Security | $155.00 | 6.20% |
| Medicare | $36.25 | 1.45% |
| Illinois income tax | $118.18 | 4.73% |
| Take-home pay | $1,974.41 | 78.98% |
Living on a paycheck in Illinois
Illinois applies a flat 4.95% income tax to nearly all income, so a Chicago software engineer and a downstate teacher are taxed at the same state rate. The flatness makes Illinois take-home pay predictable, though the state offers a per-person personal exemption rather than a large standard deduction.
Knowing your net pay matters in Illinois, where local costs and property taxes vary widely. The calculator above isolates the paycheck math so you can budget clearly.
How Illinois taxes are withheld
Your Illinois paycheck has federal income tax, Social Security (6.2%), and Medicare (1.45%) withheld, plus the flat 4.95% Illinois income tax. Illinois grants a personal exemption per filer rather than a standard deduction, so most of your wages are taxable at the flat rate. Pre-tax 401(k) and health contributions still reduce the taxable amount.
What shapes your take-home in Illinois
With a flat 4.95% rate and a modest personal exemption, your Illinois state tax tracks closely with income, while federal choices drive the rest of your net pay. As an illustration, a single filer earning $75,000 might owe a little under $3,700 in Illinois income tax for the year. The calculator above shows your exact figure.
Getting the most from each paycheck in Illinois
Pre-tax retirement and HSA contributions reduce both your federal and your flat Illinois tax, making them the strongest lever on take-home pay. Because Illinois uses a personal exemption rather than a large deduction, claiming all eligible exemptions on your IL-W-4 helps keep withholding right.
How Illinois taxes your paycheck
Illinois has a flat 4.95% state income tax. Use the calculator above to estimate your take-home pay after all withholdings.
Every US paycheck also has federal income tax, Social Security (6.2% up to the annual wage base), and Medicare (1.45%, plus 0.9% on high earners) withheld. Your taxable income is your gross pay minus pre-tax deductions such as 401(k) and pre-tax health premiums.
Frequently Asked Questions
How much is taken out of a paycheck in Illinois?
Illinois paychecks have federal income tax, Social Security (6.2%), and Medicare (1.45%) withheld, plus a flat 4.95% state income tax. The exact amount depends on your pay, filing status, and pre-tax deductions.
Does Illinois have a state income tax?
Yes. Illinois levies a flat 4.95% state income tax in addition to federal taxes.
How is this take-home estimate calculated?
It applies 2026 estimated federal brackets, FICA rates, state income-tax rates, local taxes where configured, and employee payroll-program rates to your annual pay minus pre-tax deductions, then divides by your pay frequency. It is a simplified estimate, not official payroll withholding.