Illinois Income Tax Brackets 2025
Illinois uses a flat income tax system with 1 bracket.
State Tax
5.0%
Top marginal rate
COL Index
94
Below national avg
Median Income
$78,433
Household
Brackets
1
Flat tax
Illinois Tax Brackets
| Income Range | Marginal Rate |
|---|---|
| $0 — and above | 4.95% |
Illinois State Tax at Different Income Levels
| Gross Income | State Tax | Effective Rate |
|---|---|---|
| $50,000 | $2,475 | 4.95% |
| $75,000 | $3,713 | 4.95% |
| $100,000 | $4,950 | 4.95% |
| $150,000 | $7,425 | 4.95% |
| $200,000 | $9,900 | 4.95% |
| $300,000 | $14,850 | 4.95% |
Calculate Your Exact Illinois Taxes
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