Illinois income tax rates for 2026
Illinois has a flat 4.95% rate. Rates apply to Illinois taxable income: federal adjusted gross income minus Illinois’s own deductions and exemptions.
| Rate | Single | Married filing jointly |
|---|---|---|
| 4.95% | All taxable income | All taxable income |
Illinois standard deduction and exemptions
| Item | Single | Married filing jointly |
|---|---|---|
| Personal exemption | $2,925 | $5,850 |
| Exemption per dependent | $2,925 | $2,925 |
Deductions and exemptions reduce the income Illinois taxes; credits reduce the tax itself.
How much Illinois income tax will I pay?
Estimated 2026 tax for a single filer with wage income, the standard deduction and no dependents:
| Wages | Illinois tax | State effective rate | Federal income tax | Total income tax | Combined rate |
|---|---|---|---|---|---|
| $40,000 | $1,835 | 4.59% | $2,620 | $4,455 | 11.1% |
| $60,000 | $2,825 | 4.71% | $5,020 | $7,845 | 13.1% |
| $80,000 | $3,815 | 4.77% | $8,770 | $12,585 | 15.7% |
| $100,000 | $4,805 | 4.81% | $13,170 | $17,975 | 18% |
| $150,000 | $7,280 | 4.85% | $24,734 | $32,014 | 21.3% |
| $250,000 | $12,230 | 4.89% | $51,304 | $63,534 | 25.4% |
At $100,000, for example, Illinois takes about $4,805 and the combined income tax bill is $17,975. Your marginal rate on the next dollar at that income is 26.95% (22% federal + 4.95% Illinois). These estimates apply Illinois’s brackets, standard deduction, exemptions and credits from our data, plus the phase-outs and other special rules described below; local taxes and rules the notes below mark as not modeled are left out.
How Illinois compares with neighboring states
On a $75,000 salary, a single filer pays $3,568 in Illinois income tax, the 47th-lowest among the 50 states and DC. The median across all of them is $2,588.
| State | State tax on $75,000 | Effective rate | Rates | National rank |
|---|---|---|---|---|
| Indiana | $2,183 | 2.91% | Flat 2.95% | 14 of 51 |
| Iowa | $2,198 | 2.93% | Flat 3.8% | 16 of 51 |
| Kentucky | $2,507 | 3.34% | Flat 3.5% | 23 of 51 |
| Missouri | $2,588 | 3.45% | 0%–4.7% | 26 of 51 |
| Wisconsin | $2,944 | 3.92% | 3.5%–7.65% | 35 of 51 |
| Illinois | $3,568 | 4.76% | Flat 4.95% | 47 of 51 |
Compare Illinois with Iowa, Indiana, Kentucky, Missouri and Wisconsin.
Illinois tax rules to know
Key points from our 2026 Illinois data, compiled from the official sources listed at the end of this page:
- Flat 4.95% on net income (federal AGI with Illinois modifications); no standard deduction.
- Exemption allowance is $2,925 per person for tax year 2026 (up from $2,850 in 2025); it is not allowed if federal AGI exceeds $250,000 ($500,000 married filing jointly).
- An additional $1,000 exemption applies for each taxpayer/spouse who is 65 or older and for each who is legally blind.
- Social Security and most qualified retirement income (pensions, IRA/401(k) distributions) are excluded from Illinois income.
Local income tax: none. Cities and counties in Illinois do not levy their own income tax in our 2026 data.
More 2026 tax tools
See the 2026 federal brackets and standard deduction, estimate each paycheck with the paycheck calculator, or compare income tax in every state.
Frequently asked questions
What is the Illinois income tax rate for 2026?
Illinois has a flat 4.95% rate for 2026. Because the rate applies to taxable income after deductions and exemptions, the share of total income you pay is lower: about 4.76% for a single filer earning $75,000. At $100,000 of wages, a single filer would owe about $4,805 in Illinois income tax.
How much is Illinois income tax on $75,000?
A single filer with $75,000 in wages owes about $3,568 in Illinois income tax for 2026, based on Illinois taxable income of about $72,075. Federal income tax adds $7,670 and Social Security and Medicare $5,738, leaving about $58,025. A married couple earning $150,000 would owe about $7,135 in state tax.
What is the Illinois standard deduction for 2026?
Illinois does not offer a standard deduction in our 2026 data. Instead, a personal exemption of $2,925 for single filers ($5,850 married filing jointly) reduces taxable income. For a single filer earning $75,000, Illinois taxable income works out to about $72,075 in our estimate. See the rules section on this page for income limits that can reduce these amounts.
Does Illinois have local income taxes?
No. Our 2026 data shows no local (city or county) income taxes in Illinois, so the state and federal income tax estimated here, plus Social Security and Medicare, cover the income taxes on your wages. A single filer earning $75,000 pays about $11,238 in combined federal and Illinois income tax.
How does Illinois income tax compare with nearby states?
On a $75,000 salary, a single filer pays about $3,568 in Illinois income tax, the 47th-lowest among the 50 states and DC. Among neighbors, Indiana would take $2,183 and Wisconsin $2,944. The national median is $2,588. Income tax is only one part of the picture; sales and property taxes also differ by state.
Is this Illinois tax estimate exact?
It is an estimate. We apply Illinois’s 2026 brackets, standard deduction, exemptions and credits to your income, starting from federal adjusted gross income. We do not model every Illinois subtraction, credit or phase-out, and federal figures leave out the AMT and the QBI deduction. Use it for planning and check your actual return or Illinois’s tax agency for final numbers.