Illinois Income Tax 2026
Illinois taxes income at a flat 4.95% rate.
Calculate my Illinois take-home payTake-home pay in Illinois by salary
| Salary | Federal | IL | FICA | Take-home |
|---|---|---|---|---|
| $50,000 | $3,820 | $2,330 | $3,825 | $40,025 |
| $75,000 | $7,670 | $3,568 | $5,738 | $58,025 |
| $100,000 | $13,170 | $4,805 | $7,650 | $74,375 |
| $150,000 | $24,734 | $7,280 | $11,475 | $106,511 |
| $250,000 | $51,304 | $12,230 | $15,514 | $170,952 |
Single filer, standard deduction, wages only, no other deductions. At $100,000 you keep 74.4% after all taxes, and Illinois takes 4.81%.
How Illinois compares
- On a $100,000 salary, a single filer in Illinois takes home $74,375 after federal tax, state tax and FICA — 42nd of 51 states and DC. The median state leaves $75,488.
- State income tax takes $4,805 (4.81% of gross) at that salary.
- The state marginal rate is 4.95% at $50,000, 4.95% at $100,000 and 4.95% at $250,000.
- A $10,000 401(k) contribution at $100,000 lowers your combined income tax by about $2,695 ($2,200 federal and $495 state).
- A married couple filing jointly with $200,000 of wages keeps about $149,711.
Illinois tax brackets
Single filers
| Taxable income over | Rate |
|---|---|
| $0 | 4.95% |
- Personal exemption
- $2,925 single / $5,850 joint
Illinois income tax: common questions
Does Illinois tax wages?
Yes. Illinois taxes income at a flat 4.95% rate.
How much state income tax will I pay on $100,000 in Illinois?
About $4,805 for a single filer using the standard deduction and no other deductions. Your own figure depends on your filing status, deductions and credits — use the calculator for a personal estimate.
Does Illinois have a standard deduction or personal exemption?
Personal exemption: $2,925 single / $5,850 joint.
Where do these Illinois numbers come from?
Rates and deductions come from Tax Foundation, 2026 State Individual Income Tax Rates and Brackets (Feb 2026 snapshot), updated for 2026 legislation in GA, SC, WV, UT and AR, updated where a state changed its law later and checked against the state's own revenue department where we could reach it. The section above lists exactly what each estimate leaves out.
What these Illinois figures leave out
- Assumes no dependents, no itemized deductions and no state tax credits beyond those described.
- Head-of-household filers use the single-filer schedule and deduction, except where a state's own head-of-household amount is built in.
- State payroll taxes such as disability or family-leave insurance are not included.
- Reflects state law as we last reviewed it (September 2026). Legislatures sometimes change rates mid-year, so confirm the current figures with your state's revenue department before relying on them.
Checked against official sources (September 2026): 4.95% rate and the $2,925 exemption for 2026 — Illinois Department of Revenue. Official source.
Rates and deductions come from Tax Foundation, 2026 State Individual Income Tax Rates and Brackets (Feb 2026 snapshot), updated for 2026 legislation in GA, SC, WV, UT and AR (source). See our methodology for how every figure is calculated.
Estimate only. This is an approximation, not a tax return or professional advice, and may not reflect every credit, exemption, or recent law change. Verify with your tax authority or a qualified professional before relying on it. Read the full disclaimer or see how it's calculated.