Calculate your Illinois state income tax and federal tax. Illinois state income tax rate is 4.95%. Free tax calculator for Illinois residents. Accurate 2026 tax estimates.
Illinois has a state income tax rate of 4.95%.
Tax Brackets: Progressive brackets
Welcome to the most accurate and up-to-date Illinois tax calculator. Whether you're a resident of Illinois or considering moving there, understanding your tax obligations is crucial for financial planning. Illinois has a state income tax rate of 4.95%, in addition to federal income tax. With a population of 12.7M and a median household income of $69,187, Illinois residents need reliable tax calculation tools. Our free Illinois tax calculator helps you estimate both your federal and state income taxes instantly. Simply enter your annual income, select your filing status, and get accurate tax estimates based on the latest 2026 IRS tax brackets and Illinois state tax rates.
### State Tax Rate Illinois imposes a state income tax rate of 4.95% on residents' income. This is in addition to federal income tax. The state tax helps fund essential services including education, healthcare, infrastructure, and public safety throughout Illinois. ### Illinois Demographics - **Capital**: Springfield - **Population**: 12.7M - **Median Household Income**: $69,187 ### Tax Filing Deadlines Illinois residents must file their federal tax returns by April 15th each year (or the next business day if April 15th falls on a weekend or holiday). State tax returns for Illinois are typically due on the same date. ### Who Needs to File? You need to file a federal tax return if your income exceeds the standard deduction for your filing status. For 2026, the standard deduction is $13,850 for single filers and $27,700 for married couples filing jointly.
### What is the state income tax rate in Illinois? The state income tax rate in Illinois is 4.95%. This is applied to your taxable income in addition to federal income tax.
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All Illinois residents are subject to federal income tax, which uses a progressive system with rates ranging from 10% to 37% for 2024. Your federal tax liability depends on your taxable income and filing status.
Illinois levies state income tax with Progressive brackets. The top marginal rate is 4.95%, which applies to the highest income earners.
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