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🦅 Illinois Income Tax Calculator
Illinois has a constitutionally mandated flat income tax of 4.95%, though it also has high property taxes.
Uses 2025 tax-year brackets
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Illinois State Tax Facts (2025 tax year)
Constitutionally flat 4.95% income tax
One of the highest property tax burdens in the nation
Chicago residents pay an additional city income tax
4.95%
Top state rate
On top of federal income tax, Illinois residents pay up to 4.95% in state income tax. Use the calculator above to see your combined effective rate.
Frequently Asked Questions
What is the income tax rate in Illinois?+
Illinois has a top state income tax rate of 4.95%. Illinois has a constitutionally mandated flat income tax of 4.95%, though it also has high property taxes. Federal income tax on top follows the 2025 US federal brackets (10%–37%). Brackets are adjusted annually — confirm the latest at IRS.gov or CRA.gc.ca.
How do I calculate my take-home pay in Illinois?+
Enter your gross annual income in the calculator above. It applies 2025 federal and Illinois state tax rates automatically — including payroll taxes like Social Security and Medicare — and shows your monthly net income.
Go Beyond Tax — Plan Your Full Financial Picture
Your Illinois take-home pay is the starting point. Map every dollar in a monthly budget and see how your savings compound over time.
Open Budget Planner & Investment Projector →