Illinois State Income Tax
Key Fact: Illinois has a flat income tax rate of 4.95% for 2026. This applies to all wage earners regardless of income level — unlike the federal system, there are no brackets.
Who Pays Illinois State Income Tax?
Federal Income Tax Withholding
2026 Federal Tax Brackets
| Taxable Income | Tax Rate |
|---|---|
| $0 – $11,925 | 10% |
| $11,926 – $48,475 | 12% |
| $48,476 – $103,350 | 22% |
| $103,351 – $197,300 | 24% |
| $197,301 – $250,525 | 32% |
| $250,526 – $626,350 | 35% |
| Over $626,350 | 37% |
Updating Your W-4
FICA Taxes: Social Security & Medicare
Social Security
6.2%
Applied to wages up to $176,100 (2026 wage base). Employer matches this amount.
Medicare
1.45%
No income cap. High earners pay an additional 0.9% on wages over $200,000.
Pre-Tax Deductions That Lower Your Taxable Income
- 401(k) and 403(b) contributions —
- Health Savings Account (HSA) —
- Flexible Spending Account (FSA) —
- Employer-sponsored health insurance premiums —
- Traditional IRA contributions —
🧮 Ready to see your exact numbers?
Use the Free Illinois Paycheck CalculatorCalculating Your Illinois Net Pay: A Step-by-Step Example
📊 Example: $60,000 Annual Salary, Single Filer, Monthly Paycheck
ItemMonthly Amount
Gross Pay$5,000.00
Federal Income Tax (est.)– $526.88
Illinois State Tax (4.95%)– $247.50
Social Security (6.2%)– $310.00
Medicare (1.45%)– $72.50
Estimated Take-Home Pay$3,843.12
* This is a simplified example. Actual withholding depends on W-4 elections, pre-tax deductions, and other factors. Use our calculator for a personalized estimate.
How to Maximize Your Illinois Take-Home Pay
1. Maximize Pre-Tax Retirement Contributions
2. Enroll in an HSA or FSA
3. Review and Update Your W-4
4. Take Advantage of Dependent Care Benefits
5. Consider Roth vs. Traditional Contributions
2026 Tax Changes Affecting Illinois Workers
Use Our Free Illinois Paycheck Calculator
Now that you understand how your Illinois paycheck is calculated, use our free Illinois Paycheck Calculator to get an instant, personalized estimate of your take-home pay. Simply enter your gross pay, filing status, pay frequency, and any deductions — and get a full breakdown in seconds.
🚀 Ready to Calculate Your Illinois Paycheck?
Use our free, up-to-date tool to see exactly what you'll take home after taxes and deductions.
Open Illinois Paycheck Calculator →