Changes for 2025 Illinois Income Tax forms and schedules for individuals and businesses, 2026 Withholding Income Tax forms and schedules, and tax preparers and software developers.

The Illinois income tax rate is a flat 4.95%. Unlike the federal government and many other states, Illinois has no tax brackets that increase rates with income.

Dec 20, 2024 · Illinois’ flat income tax rate means that every resident, regardless of income level, pays the same individual income tax rate of 4.95 percent. Nonresidents who work in Illinois …

Aug 7, 2025 · Illinois levies a simple flat rate of 4.95% on taxable income after standard or itemized deductions. It applies equally to wages, investment income, capital gains, rents, etc.

Illinois levies a flat income tax rate of 4.95 percent on individuals earning income in the state. The tax is a flat percentage of a taxpayer’s federal adjusted gross income.

Jan 1, 2026 · Find out how much you'll pay in Illinois state income taxes given your annual income. Customize using your filing status, deductions, exemptions and more.

Discover the Illinois tax tables for 2025, including tax rates and income thresholds. Stay informed about tax regulations and calculations in Illinois in 2025.

Dec 18, 2025 · Illinois maintains a 4.95% flat income tax rate for the 2025 tax year, applying to all taxable income. State law confirms retirement income stays fully exempt, including Social …

Manage Your Account Where's My Refund? MyTax Illinois for Individuals - MyTax Illinois Help Guide Look Up Your Estimated Payments, Extension Payments, and Credits Carried Forward …

Dec 2, 2025 · Learn more about Illinois state income tax structure, rates, and filing processes to help you better manage your taxes.