Illinois income tax at a glance
Top rate
4.95%
Flat rate on all taxable income
Brackets
1
From 4.95%
Tax on $75,000
$3,568
Illinois income tax, single filer, 2026
Income tax on common incomes in Illinois
Single filers taking the standard deduction, 2026 rates. Social Security and Medicare are not included; the paycheck calculator adds them.
| Income | Federal | IL | Total | Effective | Marginal |
|---|---|---|---|---|---|
| $30,000 | $1,420 | $1,340 | $2,760 | 9.2% | 16.95% |
| $40,000 | $2,620 | $1,835 | $4,455 | 11.1% | 16.95% |
| $50,000 | $3,820 | $2,330 | $6,150 | 12.3% | 16.95% |
| $60,000 | $5,020 | $2,825 | $7,845 | 13.1% | 16.95% |
| $75,000 | $7,670 | $3,568 | $11,238 | 15% | 26.95% |
| $100,000 | $13,170 | $4,805 | $17,975 | 18% | 26.95% |
| $125,000 | $18,734 | $6,043 | $24,777 | 19.8% | 28.95% |
| $150,000 | $24,734 | $7,280 | $32,014 | 21.3% | 28.95% |
| $200,000 | $36,734 | $9,755 | $46,489 | 23.2% | 28.95% |
| $250,000 | $51,304 | $12,230 | $63,534 | 25.4% | 36.95% |
Married couples filing jointly, on combined income:
| Income | Federal | IL | Total | Effective | Marginal |
|---|---|---|---|---|---|
| $30,000 | $0 | $1,195 | $1,195 | 4% | 4.95% |
| $40,000 | $780 | $1,690 | $2,470 | 6.2% | 14.95% |
| $50,000 | $1,780 | $2,185 | $3,965 | 7.9% | 14.95% |
| $60,000 | $2,840 | $2,680 | $5,520 | 9.2% | 16.95% |
| $75,000 | $4,640 | $3,423 | $8,063 | 10.8% | 16.95% |
| $100,000 | $7,640 | $4,660 | $12,300 | 12.3% | 16.95% |
| $125,000 | $10,640 | $5,898 | $16,538 | 13.2% | 16.95% |
| $150,000 | $15,340 | $7,135 | $22,475 | 15% | 26.95% |
| $200,000 | $26,340 | $9,610 | $35,950 | 18% | 26.95% |
| $250,000 | $37,468 | $12,085 | $49,553 | 19.8% | 28.95% |
Illinois vs federal income tax
On $75,000, federal income tax is $7,670 (10.2% of income) and Illinois takes $3,568 (4.8%). Illinois has a flat 4.95% income tax.
Before the brackets apply, Illinois subtracts a personal exemption of $2,925 ($5,850 married).
Federal income tax comes off first. For 2026 the standard deduction is $16,100 for single filers and $32,200 for married couples filing jointly, and the brackets run from 10% to 37%. Pre-tax 401(k) contributions (up to $24,500) lower your federal and most state income tax, but not FICA.
On a $75,000 salary, Illinois takes $3,568 a year in state taxes, which ranks #42 of 51 for take-home pay (Washington, D.C. included). The same earner in a state with no income tax, like Texas or Florida, keeps $61,593.
Questions
What is the Illinois income tax rate for 2026?
Illinois has a flat 4.95% income tax.
How much income tax do I pay on $75,000 in Illinois?
A single filer earning $75,000 owes about $7,670 in federal income tax and $3,568 in Illinois income tax, $11,238 in total. That is an effective income tax rate of 15%, before Social Security and Medicare.
How is Illinois income tax calculated?
Before the brackets apply, Illinois subtracts a personal exemption of $2,925 ($5,850 married). What is left is your taxable income, and each slice of it is taxed at the rate for that bracket. Only the dollars above a threshold pay the higher rate.
What is the difference between my marginal and effective tax rate?
Your marginal rate is the rate on your next dollar of income: the top bracket you reach. Your effective rate is your total tax divided by your income. Because lower slices of income are taxed at lower rates, the effective rate is always lower. At $75,000 in Illinois, the combined marginal rate is 26.95% but the effective income tax rate is 15%.
Sources
Every rate here comes from the agency or table linked below. Tax law changes, so if a number looks off, follow the link and tell us.
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