Illinois State Income Tax 2026
Illinois taxes wages at a flat 4.95% in 2026. On a $75,000 salary a single filer owes about $3,567 in Illinois income tax, an effective rate of 4.76%.
| Salary | Illinois income tax per year | Effective state rate | Per month | Take-home after all taxes |
|---|---|---|---|---|
| $30,000 | $1,340 | 4.47% | $111 | $24,944 |
| $40,000 | $1,835 | 4.59% | $152 | $32,484 |
| $50,000 | $2,330 | 4.66% | $194 | $40,024 |
| $60,000 | $2,825 | 4.71% | $235 | $47,564 |
| $75,000 | $3,567 | 4.76% | $297 | $58,024 |
| $100,000 | $4,805 | 4.81% | $400 | $74,374 |
| $150,000 | $7,280 | 4.85% | $606 | $106,510 |
| $250,000 | $12,230 | 4.89% | $1,019 | $170,951 |
How Illinois taxes wages
Withholding: 4.95% after the exemption allowance. Illinois tells employers to withhold 4.95% after exemption allowances. For 2026 the allowance is $2,925, and it phases out above $250,000 of income ($500,000 joint). Line 2 of Form IL-W-4, the extra $1,000 allowance, is not a separate field. Add one allowance if you claim it. Reciprocity with Iowa, Kentucky, Michigan, and Wisconsin can move the state line if you live in one state and work in another. Source: Illinois Department of Revenue.
What is not in the state income tax number
The state line here is income tax only. Federal income tax follows IRS Publication 15-T, and Social Security and Medicare are the same in every state. Illinois has no employee local wage tax in this calculator.
Illinois tax on a paycheck
For take-home pay after every tax, use the Illinois paycheck calculator, or the Illinois hourly to salary calculator if you are starting from a wage. Wages at the bottom of the scale: Illinois minimum wage. Every state at once: state income tax rates.
| State | Top rate | State income tax per year | Take-home per year |
|---|---|---|---|
| Illinois income tax (this page) | 4.95% | $3,567 | $58,024 |
| Indiana income tax | 2.95% | $2,183 | $59,409 |
| Wisconsin income tax | 7.65% | $2,943 | $58,648 |
| Iowa income tax | 3.8% | $2,198 | $59,394 |
Watch it worked through
- Illinois Income Tax Rate 2026: One 4.95% Rate #shorts (YouTube Short)
Paycheck Zip videos use the same calculator as this page. Figures in a video are from the day it was made; the page is kept current.
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Questions
Does Illinois have a state income tax?
Yes. Withholding: 4.95% after the exemption allowance. The top rate used on this page is 4.95%.
What is the Illinois income tax rate in 2026?
A flat 4.95%.
How much Illinois income tax on $50,000?
About $2,330 a year for a single filer in 2026, an effective rate of 4.66%. Federal tax, Social Security and Medicare are extra.
How much Illinois income tax on $100,000?
About $4,805 a year for a single filer in 2026, an effective rate of 4.81%.
Is this the amount an employer withholds?
It uses the state’s employer withholding method, so it should be close to a stub. Pre-tax benefits and the state allowance form can change the stub.