Illinois Income Tax Calculator
Estimate your 2026 federal and Illinois state income tax, FICA and take-home pay from your income and filing status.
Advertisement
About the Illinois Income Tax Calculator
This Illinois income tax calculator estimates your 2026 federal income tax, Social Security and Medicare tax and Illinois state income tax from your income and filing status. It applies the IL state brackets, standard deduction and personal exemption, and shows your take-home pay.
How to use it
- Enter your annual income and filing status.
- Add pre-tax deductions such as 401(k) and HSA contributions.
- Press Calculate tax to see your federal, FICA and Illinois state tax and take-home pay.
Illinois income tax brackets for 2026 (single filers)
Illinois taxes wage income with a flat rate of 4.95%. The state standard deduction is $0 and the personal exemption is $2,925 for single filers where applicable.
| Taxable income | Rate |
|---|---|
| $0 and up | 4.95% |
Source: Tax Foundation, 2026 state individual income tax rates and brackets. Local taxes are not included.
Illinois state income tax at common salaries
| Gross income | IL income tax | Effective rate |
|---|---|---|
| $40,000 | $1,835 | 4.59% |
| $60,000 | $2,825 | 4.71% |
| $80,000 | $3,815 | 4.77% |
| $100,000 | $4,805 | 4.81% |
| $150,000 | $7,280 | 4.85% |
Single filer, after the state standard deduction and personal exemption.
Frequently asked questions
How much is state income tax in Illinois?
As of 2026, Illinois has a flat income tax rate of 4.95%.
What is the Illinois standard deduction?
For single filers the Illinois standard deduction is $0 and the personal exemption is $2,925. Rules can differ by filing status.
How much tax would I pay on $80,000 in Illinois?
A single filer with $80,000 of income pays about $3,815 in IL state income tax, an effective rate of 4.77%.
Does Illinois tax Social Security?
Most states do not tax Social Security benefits, but a few do. Check the state revenue department for current rules.
Does this include local income tax?
No. Some cities and counties levy local income taxes. Confirm with your local government.
Last reviewed: November 2026. Estimates only, not tax advice.