Illinois Paycheck Calculator (2026)
Use our free Illinois paycheck calculator to estimate your take-home pay after all taxes and deductions. Enter your salary or hourly wage below to get an instant breakdown of federal taxes, state taxes, FICA contributions, and your net paycheck.
How Illinois Paycheck Taxes Work
When you receive a paycheck in Illinois, your employer withholds several types of taxes:
1. Federal Income Tax — Based on your income, filing status, and allowances. The 2024 federal tax brackets range from 10% to 37%. 2. Social Security — 6.2% of wages up to $168,600 in 2026. 3. Medicare — 1.45% on all wages, plus an additional 0.9% on earnings above $200,000 (single) or $250,000 (married). 4. Illinois State Income Tax — Withheld according to Illinois's tax rates.
Illinois State Income Tax Rate (2026)
Illinois levies a flat income tax rate of 4.95% on all taxable income. This flat-rate structure means every dollar above your standard deduction is taxed at the same percentage, regardless of how much you earn.
Federal Tax Brackets for 2026
The federal government uses a progressive tax system with seven brackets. Only the income within each bracket is taxed at that rate — not your entire income.
| Bracket | Single | Married | |---------|--------|---------| | 10% | Up to $11,600 | Up to $23,200 | | 12% | $11,601 – $47,150 | $23,201 – $94,300 | | 22% | $47,151 – $100,525 | $94,301 – $201,050 | | 24% | $100,526 – $191,950 | $201,051 – $383,900 | | 32% | $191,951 – $243,725 | $383,901 – $487,450 | | 35% | $243,726 – $609,350 | $487,451 – $731,200 | | 37% | Over $609,350 | Over $731,200 |
Social Security & Medicare Taxes
FICA taxes fund Social Security and Medicare programs. As an employee, you pay:
- Social Security: 6.2% on earnings up to $168,600
- Medicare: 1.45% on all earnings
- Additional Medicare: 0.9% on earnings over $200,000 (single) / $250,000 (married)
Pre-Tax Deductions in Illinois
Pre-tax deductions reduce your taxable income before federal and state taxes are calculated. Common pre-tax deductions include:
- 401(k) contributions — Traditional 401(k) contributions reduce your federal (and usually state) taxable income. The 2024 contribution limit is $23,000 ($30,500 if you're 50+).
- Health insurance premiums — Employer-sponsored health insurance premiums paid through payroll are typically pre-tax.
- HSA contributions — Health Savings Account contributions are fully tax-deductible.
- FSA contributions — Flexible Spending Account contributions reduce taxable income.
Illinois Paycheck Calculator: Step-by-Step Example
Let's calculate take-home pay for a Illinois resident earning $75,000/year, single, bi-weekly pay, with a 5% 401(k) contribution:
1. Annual Gross Pay: $75,000 2. 401(k) Contribution (5%): −$3,750 3. Adjusted Gross Income: $71,250 4. Federal Standard Deduction: −$14,600 5. Federal Taxable Income: $56,650 6. Federal Income Tax: ~$7,930 7. Illinois State Tax: ~$2,804 8. Social Security (6.2%): $4,650 9. Medicare (1.45%): $1,088 10. Estimated Net Pay (Annual): ~$54,778
Your bi-weekly take-home check would be approximately $2,107.
Tips to Maximize Take-Home Pay in Illinois
1. Maximize your 401(k) — Every dollar contributed pre-tax reduces both federal and state taxes. 2. Review your W-4 — Updating your W-4 ensures you're not over-withholding federal taxes. 3. Use an FSA or HSA — Tax-advantaged health accounts reduce your taxable income. 4. Consider Roth conversions — If you're in a low tax year, converting traditional IRA funds to Roth can save long-term.
Illinois Paycheck FAQ
Use the FAQ section below or our calculator at the top of this page for a personalized estimate.