Illinois Tax Calculator
Accurately calculate your Illinois state taxes for 2026. Understand your full tax burden including federal, state, and local taxes.
Why calculating tax in Illinois is different
Illinois has a flat income tax and high local property taxes.
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
Does Illinois have a state income tax?
Yes, Illinois imposes a state income tax. The current rate is 4.95%. Be sure to factor this into your overall tax planning.
What is the base sales tax in Illinois?
The base state sales tax in Illinois is 6.25%. Local municipalities may add additional local sales taxes on top of this rate.
How can I lower my taxes in Illinois?
You can lower your Illinois tax liability by maximizing contributions to tax-advantaged accounts like 401(k)s and IRAs, and by taking advantage of Illinois-specific tax credits and deductions.