Illinois Income Tax Calculator
FinanceCalculate your Illinois state income tax using the current flat rate.
Illinois Income Tax Owed
Your Illinois state income tax at the current flat rate.
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Odeh Ahwal0people find this calculator helpful
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Frequently Asked Questions
What is Illinois's income tax rate?
Illinois applies a flat 4.95% income tax rate to all taxable income, regardless of income level or filing status -- Illinois's state constitution requires a flat (not graduated) income tax.
Are these tax figures always current?
Tax rates, brackets, and thresholds are set by government authorities and typically change at least annually. This calculator is for estimation only -- always verify current figures with the relevant official tax authority before making financial decisions.
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