Illinois Income Tax Guide for 2025
Overview
Illinois has a flat income tax rate of 4.95%. Capital gains are taxed as ordinary income. The state offers personal exemptions of $2,850 and dependent exemptions of $2,850.
Income Tax Rates
Single Filers
| Income Range | Tax Rate |
|---|---|
| All income | 4.95% |
Married Filing Jointly
| Income Range | Tax Rate |
|---|---|
| All income | 4.95% |
Capital Gains Tax
Capital gains are taxed at the same rates as ordinary income.
Deductions & Exemptions
| Type | Amount |
|---|---|
| Personal Exemption (Single) | $2,850 |
| Personal Exemption (Married) | $5,700 |
| Dependent Exemption | $2,850 |
Additional Information
- Uses exemption system instead of standard deduction
- Personal exemption allowance is $2,850 for 2025 ($5,700 married filing jointly) plus $2,850 per dependent; no exemption allowance is allowed if federal AGI exceeds $250,000 ($500,000 married filing jointly)
Charts
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Sources
The 2025 figures for Illinois on this page were compiled from the following official government publications:
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