2026 · Illinois
Illinois Paycheck Calculator
Illinois uses a flat 4.95% withholding rate in 2026 after IL-W-4 allowances. The state publishes a formula method that adjusts each paycheck by the annual allowance value divided by the number of pay periods.
Your pay
Tell us about your paycheck
Your estimated paycheck
$2,855 take-home
Taxes & payroll deductions
Each pay period is calculated separately. A dash means the current per-paycheck deductions exceed pay at that frequency. Annualized pay repeats the selected paycheck; actual yearly totals can differ near wage and contribution limits.
Tax rules verified: 2026-09-22 · IRS · Social Security Administration · Illinois Department of Revenue
Assumptions and sources
- One employer; work and residence are in the selected state.
- Missing YTD wages are projected from the selected pay date and current pay pattern.
- Illinois uses the IL-700-T formula method with zero IL-W-4 allowances unless entered.
Tax rules verified: 2026-09-22
- Publication 15-T (2026), Federal Income Tax Withholding Methods — IRS
- Contribution and Benefit Base — Social Security Administration
- 2026 IL-700-T Illinois Withholding Tax Tables — Illinois Department of Revenue
Estimated paycheck — not tax advice.
$100,000 salary in Illinois
For a single filer paid biweekly with default W-4 settings, an estimated paycheck is $2,855.00 from $3,846.15 gross. Your actual withholding depends on your W-4, employer, benefits, and year-to-date wages.
Each pay frequency uses its own withholding calculation. Annualized pay repeats the displayed biweekly paycheck; actual yearly totals can differ near annual limits.
Common Illinois salaries
These examples use the same single filer, biweekly pay, and default W-4 settings as the calculator above.
| Annual salary | Gross per paycheck | Estimated take-home |
|---|---|---|
| $50,000.00 | $1,923.08 | $1,533.86 |
| $75,000.00 | $2,884.62 | $2,226.15 |
| $100,000.00 | $3,846.15 | $2,855.00 |
| $125,000.00 | $4,807.69 | $3,481.38 |
| $150,000.00 | $5,769.23 | $4,091.00 |
| $200,000.00 | $7,692.31 | $5,310.23 |
How Illinois payroll deductions work
The calculator uses Illinois IL-700-T formula withholding, including optional IL-W-4 allowances. Federal income tax withholding follows IRS Publication 15-T. Social Security and Medicare follow federal payroll rules.
Methodology and sources
We calculate a pay-period estimate using the selected pay frequency and withholding inputs. Missing YTD wages are projected from the pay date and current pay pattern.
- Publication 15-T (2026), Federal Income Tax Withholding Methods — IRS
- Contribution and Benefit Base — Social Security Administration
- 2026 IL-700-T Illinois Withholding Tax Tables — Illinois Department of Revenue
Tax rules verified: 2026-09-22 · Rules 2026.1 / 2026.1