Illinois income tax calculator
Illinois taxes income at a flat 4.95%. See your Illinois tax next to federal and payroll tax.
Effective state rate 4.8% · top rate 4.95%. Ranks #46 of 51 for this income (1 = lowest).
Illinois income tax in 2026
Illinois taxes income at a flat 4.95% after a $2,850 exemption per person. Most retirement income is exempt.
Illinois brackets (single filers)
| Rate | Taxable income over |
|---|---|
| 4.95% | $0 |
Joint filers’ brackets are twice as wide.
This is a simplified model: it covers the main deduction, exemptions and brackets but not every state credit. Check the Illinois Department of Revenue for your return. More in the methodology.
Questions people ask
What is the Illinois income tax rate for 2026?
Illinois has a flat income tax of 4.95%. Illinois taxes income at a flat 4.95% after a $2,850 exemption per person. Most retirement income is exempt.
How much Illinois tax will I pay on $75,000?
Enter $75,000 in the calculator above for your filing status; it shows the exact bracket split, the effective state rate and how Illinois ranks against every other state at that income.
Does Illinois have local income taxes?
Illinois does not have widespread local income taxes, so the state figure is usually the whole story.
Nearby in the list: Idaho · Indiana · all states