Illinois Income Tax Calculator
Determine your exact state income tax bracket and liability in Illinois. Model your deductions and exemptions.
Why calculating tax in Illinois is different
Illinois has a flat income tax and high local property taxes.
State Income Tax
4.95%
Base Sales Tax
6.25%
State Min Wage
$14.00 / hr
Abbreviation
IL
Illinois Tax Interactive Tool
This calculator uses the latest 2026 data for Illinois, including the minimum wage of $14.00 and the specific state income tax rates (4.95%).
Frequently Asked Questions about Illinois Tax
What are the income tax brackets in Illinois?
Illinois features an income tax rate structure of 4.95%. Depending on your taxable income, you will fall into specific brackets that dictate your marginal tax rate.
Does Illinois tax retirement income?
The taxation of retirement income varies. You must check current Illinois Department of Revenue guidelines to see if Social Security or pension income is exempted from the 4.95% state tax.