How Illinois taxes your paycheck in 2026
Illinois taxes wages at a flat 4.95%, after a $2,925 single-filer deduction/exemption.
Federal deductions are the same everywhere: income tax on your wages after the $16,100 standard deduction (single filers), 6.2% Social Security on the first $184,500 of wages, and 1.45% Medicare on everything.
Illinois's income tax, in context
Illinois has a constitutionally mandated flat income tax — 4.95% since 2017 — and voters rejected a graduated-rate amendment in 2020. There is no standard deduction, only a modest personal exemption, so the flat rate applies from close to the first dollar. Chicago, notably, has no city income tax.
Illinois 2026 income tax brackets (single filer)
One rate applies to all taxable income, after the $2,925 single-filer deduction/exemption.
| Taxable income | Rate |
|---|---|
| Over $0 | 4.95% |
How Illinois compares
On a $75,000 single-filer salary, Illinois ranks 45th of 51 for take-home pay, at $58,025 after $3,568 of state tax. Moving that salary to a no-income-tax state like Texas or Florida would keep an extra $3,568 a year; the same salary in the highest-tax state (Oregon) would net $55,604. At the register, Illinois's average combined sales tax is 8.98% — see the Illinois sales tax calculator.
Neighboring states on the same $75,000 salary:
| State | State income tax | Take-home / yr | vs. IL |
|---|---|---|---|
| Illinois | $3,568 | $58,025 | — |
| Indiana | $2,183 | $59,410 | +$1,385 |
| Iowa | $2,238 | $59,354 | +$1,330 |
| Kentucky | $2,507 | $59,085 | +$1,060 |
| Missouri | $2,588 | $59,005 | +$980 |
| Wisconsin | $2,632 | $58,961 | +$936 |
Example take-home pay in Illinois
Single filer, 2026 rates, standard deduction, no pre-tax benefits or local taxes:
| Salary | Federal tax | IL state tax | Take-home / yr | Per biweekly check |
|---|---|---|---|---|
| $40,000 | $2,620 | $1,835 | $32,485 | $1,249 |
| $50,000 | $3,820 | $2,330 | $40,025 | $1,539 |
| $60,000 | $5,020 | $2,825 | $47,565 | $1,829 |
| $75,000 | $7,670 | $3,568 | $58,025 | $2,232 |
| $100,000 | $13,170 | $4,805 | $74,375 | $2,861 |
| $150,000 | $24,734 | $7,280 | $106,511 | $4,097 |
Frequently asked questions
+How much is taken out of a $75,000 paycheck in Illinois?
For a single filer with no pre-tax deductions in 2026: about $7,670 federal income tax, $5,738 in Social Security and Medicare, and roughly $3,568 in Illinois state income tax — leaving take-home pay of about $58,025 a year, or $2,232 every two weeks.
+What is the Illinois state income tax rate for 2026?
Illinois taxes wages at a flat 4.95%, after a $2,925 single-filer deduction/exemption.
+How much is $100,000 after taxes in Illinois?
About $74,375 a year for a single filer in 2026 — $13,170 federal income tax, $7,650 Social Security and Medicare, and about $4,805 Illinois state tax. That's roughly $6,198 a month.
+How much is $50,000 after taxes in Illinois?
About $40,025 a year, or $1,539 per biweekly check, for a single filer with the standard deduction after roughly $2,330 of Illinois state tax.
+What is the marginal state tax rate on a $75,000 salary in Illinois?
4.95%. That's the Illinois tax on your next dollar of income at $75,000, on top of the 22% federal bracket and 7.65% FICA — about 34.6% all-in on a raise before local taxes.
+Why is my actual paycheck different from this estimate?
This calculator assumes the standard deduction, single-filer state parameters, and no dependents, credits or local taxes. Employer withholding also follows your W-4, which may over- or under-withhold relative to your final tax bill.
+Do 401(k) contributions reduce state tax too?
In Illinois, traditional 401(k) and most pre-tax benefit contributions reduce your state taxable income as well as federal. They do not reduce Social Security or Medicare tax.
Sources: IRS 2026 federal parameters; state rates and brackets as of January 1, 2026 compiled from state statutes and the Tax Foundation. Estimates only — see our terms.