Free Illinois Payroll Calculator — 2026
Payroll Calculator
Calculate gross-to-net pay with federal taxes, FICA, and state withholding. See your take-home pay instantly.
Illinois Payroll Tax Information (2026)
Illinois levies a flat income tax of 4.95% on all taxable income. A constitutional amendment would be required to change to a progressive system.
| State Tax Rate | 4.95% |
| Tax Structure | Flat rate |
| Tax Authority | Illinois Department of Revenue ↗ |
Frequently Asked Questions
What is the income tax rate in Illinois?
Illinois has a 4.95% flat income tax rate. Illinois levies a flat income tax of 4.95% on all taxable income. A constitutional amendment would be required to change to a progressive system.
How do I calculate my take-home pay in Illinois?
Enter your gross salary or hourly rate above. Our calculator automatically applies 2026 federal tax brackets, Illinois state taxes, FICA (Social Security and Medicare), and any pre-tax deductions to calculate your exact take-home pay. Download a pay stub PDF when you're done.
Does Illinois have local income taxes?
Illinois state income tax is 4.95% (flat). Some localities may impose additional taxes — check with the Illinois Department of Revenue for local requirements.