Illinois tax tables 2026
The figures set by or for Illinois for 2026: income tax brackets, payroll contributions and employer rates. Federal or national figures for the US are on the national page.
- 2026-01-01 to 2026-12-31
- USD
Income tax
Illinois income tax brackets: All filing statuses
| State taxable income, per year | Rate |
|---|---|
| Over $0 | 4.95% |
Source: Illinois Department of Revenue Informational Bulletin FY 2026-15, What's New for Illinois Income Taxes (December 2025) · retrieved 2026-10-16
Illinois income tax: key figures
| Item | Value |
|---|---|
| Type | Flat rate |
| Flat rate | 4.95% |
| Top rate | 4.95% |
| Personal exemption (each for you, your spouse and each dependent) (exemption)Not allowed on Form IL-1040 when federal AGI exceeds $500,000 (married filing jointly) or $250,000 (other returns). | $2,925 |
| Additional exemption, age 65 or older or legally blind (each) (exemption) | $1,000 |
Source: Illinois Department of Revenue Informational Bulletin FY 2026-15, What's New for Illinois Income Taxes (December 2025) · retrieved 2026-10-16
Employee contributions
Illinois supplemental (bonus) withholding
| Item | Value |
|---|---|
| Supplemental rate | 4.95% |
Source: Illinois Department of Revenue Publication 130 (R-02/26), Who is Required to Withhold Illinois Income Tax · retrieved 2026-10-16
Employer costs
Illinois state unemployment insurance (employer)
| Item | Value |
|---|---|
| Taxable wage base (per employee, per year) | $14,250 |
| New employer rate | 3.35% |
| Experience-rated range: lowest | 0.2% |
| Experience-rated range: highest | 6.5% |
Illinois new employers pay 3.35% (3.45% in NAICS sector 56), including the 0.55% Fund Building Rate.
Source: Illinois IDES Form EA-50 (11/2025), 2026 State Experience Factor and Contribution Rates · retrieved 2026-10-20
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Official sources
- Booklet IL-700-T (R-12/25), 2026 Illinois Withholding Tax Tables · retrieved 2026-10-16
- Form IL-W-4 (R-07/23), Employee's Illinois Withholding Allowance Certificate and Instructions · retrieved 2026-10-16
- Publication 130 (R-02/26), Who is Required to Withhold Illinois Income Tax · retrieved 2026-10-16
- Informational Bulletin FY 2026-15, What's New for Illinois Income Taxes · retrieved 2026-10-16
- Unemployment Insurance Notice to employees (poster): only employers contribute; no deductions from wages · retrieved 2026-10-16
- Constitution of the State of Illinois, Article VII, Section 6(e) (home-rule taxes on income) · retrieved 2026-10-16
- Illinois IDES Form EA-50 (11/2025), 2026 State Experience Factor and Contribution Rates · retrieved 2026-10-20
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