Illinois Income Tax Calculator (2024)

Estimate your take-home pay and all taxes in Illinois for 2024!
Our Illinois Income Tax Calculator provides a fast, accurate breakdown of your federal, IL state, and FICA taxes, including deductions, dependents, and pay frequency. Instantly see your annual and per-paycheck results, interactive charts, and a transparent calculation process.
This tool gives you clarity on your net pay and tax obligations. Updated for 2024 brackets and rules.

Illinois Income Tax Calculator

Calculating for Tax Year 2024
Pre-Tax Deductions (Annual)

Understanding Illinois Taxes (2024)

Illinois uses a flat tax system, which means everyone pays the same tax rate regardless of income level. This calculator helps you estimate your take-home pay by considering state, federal, and FICA taxes.

Illinois State Income Tax

For 2024, Illinois has a flat income tax rate of 4.95% for all income levels, regardless of filing status.

  • Flat Tax Rate: Illinois applies a 4.95% tax rate on all taxable income in 2024.
  • No State Standard Deduction: Illinois doesn't offer a state standard deduction like the federal government does.
  • Personal Exemption: Illinois offers a personal exemption of $2,375 per person (taxpayer, spouse, and each dependent) in 2024.
  • Property Tax Credit: Illinois offers a credit of up to 5% of Illinois property tax paid on a principal residence.

Local Taxes

In addition to state income tax, some localities in Illinois may impose additional taxes:

  • Chicago Personal Property Lease Transaction Tax: Applies to leased personal property in Chicago.
  • Municipal Utility Taxes: Many municipalities impose taxes on utilities.

Note: This calculator does not include these local taxes in the calculations.

Federal Income Tax

Your federal income tax is calculated based on federal tax brackets, your filing status, deductions (standard or itemized), and allowances claimed on your W-4 form. Pre-tax deductions like 401(k) or HSA contributions reduce your federal taxable income.

FICA Taxes (Social Security & Medicare)

FICA taxes fund Social Security and Medicare. These are typically withheld by employers.

  • Social Security: 6.2% on income up to the annual limit ($168,600 for 2024).
  • Medicare: 1.45% on all income. An additional 0.9% Medicare tax applies to income above certain thresholds ($200,000 for Single, $250,000 for MFJ).

Other Illinois Taxes (Not Calculated Here)

While this calculator focuses on income taxes, be aware of other taxes in Illinois:

  • Sales Tax: Illinois has a state sales tax rate of 6.25%, with additional local taxes that can bring the total to over 10% in some areas like Chicago.
  • Property Tax: Illinois has some of the highest property tax rates in the country, averaging around 2.05% of a property's value.
  • Estate Tax: Illinois has a state estate tax for estates valued over $4 million.

Disclaimer: This information is for general guidance for the 2024 tax year and is not tax advice. Consult a tax professional for personalized advice.