How your Illinois paycheck is calculated
Every $100 you earn in Illinois
- Take-home pay$77
- Federal income tax$10
- Social Security & Medicare$8
- State income tax$5
$75,000 salary, single filer, 2026.
An Illinois paycheck has four tax lines: federal income tax, Social Security, Medicare and Illinois income tax. The calculator works out a full year of each from the 2026 rules and divides by your number of paychecks. Tap any line in the breakdown to see the arithmetic and its source.
Illinois starts from your federal adjusted gross income, so the same pre-tax deductions that lower your federal tax — 401(k) contributions, health premiums and HSA contributions — lower your Illinois tax too. There is no standard deduction. Instead, Illinois gives an exemption of $2,925 for each person on the return, then taxes everything left at one flat rate of 4.95%.
Social Security takes 6.2% of wages up to $184,500 and Medicare takes 1.45% of all wages, exactly as in every other state.
Illinois take-home pay at common salaries
The table runs the calculator for a single filer with no pre-tax deductions in 2026. The chart shows how the share you keep changes as pay rises.
| Salary | Take-home per year | Every two weeks | Total tax rate |
|---|---|---|---|
| $30,000 | $24,945 | $959 | 16.9% |
| $40,000 | $32,485 | $1,249 | 18.8% |
| $50,000 | $40,025 | $1,539 | 20.0% |
| $60,000 | $47,565 | $1,829 | 20.7% |
| $75,000 | $58,025 | $2,232 | 22.6% |
| $100,000 | $74,375 | $2,861 | 25.6% |
| $125,000 | $90,661 | $3,487 | 27.5% |
| $150,000 | $106,511 | $4,097 | 29.0% |
| $200,000 | $139,172 | $5,353 | 30.4% |
| $250,000 | $170,952 | $6,575 | 31.6% |
Your numbers will differ if you contribute to a 401(k), pay health premiums, file jointly or have children — enter them in the calculator above.
Take-home on a $75,000 salary by state
Reading your Illinois pay stub
Payroll software rarely uses the same names as tax law. Here is how the lines in the breakdown above usually appear on a Illinois pay stub, using a $75,000 salary paid every two weeks.
Illinois rules that change your take-home pay
- One rate for everyone. A raise never pushes you into a higher Illinois bracket — every extra dollar is taxed at 4.95%. Your effective Illinois rate rises slowly only because the exemption becomes a smaller share of your pay.
- Exemptions vanish for high earners. Above $250,000 of income ($500,000 for married couples filing jointly) you lose the exemption entirely, so the full amount is taxed.
- No break for overtime or tips. Illinois has not adopted the federal overtime and tips deductions. Because Illinois starts from federal AGI — and those deductions come after AGI — overtime and tips stay fully taxable here without any extra add-back.
- The 2026 exemption is $2,925. It rose from $2,850 in 2025. Some calculators still use older figures, which makes their Illinois tax slightly too high.
- Retirement income is not taxed. Illinois exempts Social Security, pensions and most retirement-plan withdrawals — something to remember when comparing states for retirement.
Why your real paycheck can differ
Your employer withholds Illinois tax from the allowances on your IL-W-4: each basic allowance is worth $2,925 a year, and each additional allowance $1,000. If you claimed too few or too many allowances, or asked for extra withholding, each check will differ from the annual estimate here. Bonuses are withheld at the same 4.95% rate, so they do not cause an Illinois surprise — but federal tax on a bonus is often withheld at a flat 22%.
2027 Illinois paycheck
Switch the tax year to 2027 to use the new federal brackets, standard deduction and Social Security wage base. Illinois adjusts its exemption for inflation each year. Until they are out, the Illinois lines use 2026 figures and the calculator says so above the breakdown. We update the page the day the official numbers are published — see the data changelog.