Estimate your take-home pay after IL's 4.95% flat state tax.
Welcome to the most accurate and easy-to-use Illinois paycheck calculator 2025. This tool helps you see a detailed breakdown of your salary, accounting for Illinois's unique 4.95% flat tax, federal withholdings, and FICA deductions. Simply enter your gross pay and filing details to instantly see your estimated take-home pay.
| Gross Pay | $0.00 |
| Federal Income Tax | $0.00 |
| Illinois State Tax (4.95%) | $0.00 |
| Social Security (6.2%) | $0.00 |
| Medicare (1.45%) | $0.00 |
| Net Pay (Take-Home) | $0.00 |
Our Illinois paycheck calculator 2025 simplifies estimating your net pay. Illinois has a straightforward flat tax system, meaning your paycheck will have deductions for federal taxes, FICA (Social Security and Medicare), and the single-rate Illinois state income tax.
Instead of multiple tax brackets that change with income, Illinois applies a single flat tax rate to all income levels. For the 2025 tax year, this rate is **4.95%**. This flat rate is applied to your income after subtracting your total personal exemption allowance, which lowers your taxable income.
For 2024-2025, each personal exemption you claim in Illinois is worth **$2,425**. This amount is deducted from your annual income before the 4.95% tax is calculated, reducing your overall state tax liability. You can claim exemptions for yourself, your spouse, and your dependents.
Illinois has a flat individual income tax rate of 4.95%. Unlike states with progressive brackets, this single rate applies to all levels of income after exemptions are subtracted.
No, there is no city-level income tax on employee wages in Chicago or any other Illinois city. Your paycheck is only subject to the statewide 4.95% flat tax, in addition to federal and FICA taxes.
The Illinois personal exemption allowance is $2,425. This amount is multiplied by the number of exemptions you claim and subtracted from your income before the state tax is calculated.
Use our free salary calculators to estimate your take-home pay in other states across the country.