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How Illinois Income Tax & Salary Deductions Work
Illinois uses a flat income tax system with a top marginal rate of 4.95%. When combined with federal taxes, Social Security, and Medicare, understanding your total tax burden is essential for financial planning.
Did you know? Illinois has a population of 12.5M with its capital in Springfield. The flat tax system means all taxable income is taxed at the same rate.
With 4 major cities including Chicago, Aurora, Naperville,Illinois offers diverse employment opportunities across multiple industries. Use our calculator above to see your personalized tax breakdown.
Understanding Your Illinois Paycheck & Tax Withholdings
When you receive your paycheck in Illinois, several deductions are automatically taken out. These include federal income tax state income tax (4.95% top rate), Social Security (6.2%), and Medicare (1.45%). Our calculator breaks down each of these components so you can see exactly where your money goes.
Illinois Federal & State Tax Rates for 2026
The Illinois flat income tax has a top marginal rate of 4.95%. Combined with federal taxes ranging from 10% to 37%, your effective tax rate depends on your total income, filing status, and deductions.
Where Your Money Goes in Illinois
75.7%
11.7%
6.2%
1.5%
5.0%
Net Pay
$56,790
Federal Tax
$8,761
Social Security
$4,650
Medicare
$1,088
State Tax
$3,713
| Tax Type | Rate | Amount |
|---|---|---|
| Federal Tax | 11.68% | $8,761 |
| Social Security | 6.20% | $4,650 |
| Medicare | 1.45% | $1,088 |
| State Tax | 4.95% | $3,713 |
| Total Tax | 24.28% | $18,211 |
Popular Cities in Illinois
Browse salary calculators for the most popular cities. Cities with active calculators are highlighted.
Other States in Midwest
Compare tax rates and take-home pay in nearby Midwest states
Frequently Asked Questions
On a salary of $75,000 in Illinois, you would pay approximately $18,211 in total taxes, which represents an effective tax rate of 24.28%. This includes federal income tax, state income tax (4.95% top rate), Social Security, and Medicare.
Tax Tips & Guides for Illinois
Expert strategies for Illinois taxpayers to maximize take-home pay
3 articles about Illinois
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Chicago Tax Guide: Navigating Illinois Flat Tax and City Fees
Illinois uses a flat 4.95% income tax rate, but Chicago adds layers of fees and taxes. Here is how to optimize your finances in the Windy City.
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Chicago Freelancer Tax Guide: Illinois Flat Tax and Self-Employment Strategies
Illinois flat 4.95% rate simplifies freelancer tax planning, but Chicago adds hidden costs. Master your quarterly payments and deductions in the Windy City.
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Chicago Retirement Tax Guide: Illinois Exempts All Retirement Income
Illinois exempts all retirement income from taxation. Discover why Chicago deserves a spot on your retirement shortlist.
Jennifer Walsh·7 min read
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