Illinois Income Tax Brackets 2026
Rates verified October 15, 2026
Illinois taxes wages at a flat 4.95% for 2026.
Illinois brackets for 2026
Single
| Taxable income | Rate |
|---|---|
| All taxable income | 4.95% |
Married filing jointly
| Taxable income | Rate |
|---|---|
| All taxable income | 4.95% |
Married filing separately
| Taxable income | Rate |
|---|---|
| All taxable income | 4.95% |
Head of household
| Taxable income | Rate |
|---|---|
| All taxable income | 4.95% |
- Illinois taxes income at a flat 4.95% after a $2,925 exemption per person.
Illinois income tax on common incomes
Single filer, wages only, standard deduction, 2026 rates. Federal tax is extra.
| Income | Illinois tax | Average rate | Rate on the last dollar |
|---|---|---|---|
| $30,000 | $1,340 | 4.5% | 4.95% |
| $50,000 | $2,330 | 4.7% | 4.95% |
| $75,000 | $3,568 | 4.8% | 4.95% |
| $100,000 | $4,805 | 4.8% | 4.95% |
| $150,000 | $7,280 | 4.9% | 4.95% |
| $200,000 | $9,755 | 4.9% | 4.95% |
| $300,000 | $14,850 | 5% | 4.95% |
Federal brackets
Federal income tax applies on top of Illinois's. US federal brackets for 2026.
Frequently asked questions
What are the Illinois income tax brackets for 2026?
Illinois taxes wages at a flat 4.95% for 2026.
How much state income tax is owed on $75,000?
About $3,568 for a single filer with no other deductions: an average rate of 4.8%, with the last dollar taxed at 4.95%.
Does moving into a higher bracket mean all my income is taxed more?
No. Each rate applies only to the part of taxable income inside its bracket, so a raise that crosses into a higher bracket is taxed at the higher rate only above the threshold.
Take-home pay in Illinois
Sources
- Illinois Comptroller Payroll Bulletin 1-26: rate remains 4.95%; exemption $2,925 for 2026 (rate, exemption; checked October 15, 2026)
- IL-1040 instructions: no exemption allowance above $250,000 federal AGI ($500,000 married filing jointly) (exemption income limit; checked October 15, 2026)
Estimates for information only; not tax, legal or financial advice. See our methodology.