Illinois paycheck calculator, 2026
Illinois applies a single flat rate to all taxable income, but the allowance structure is what actually moves the number: the IL-W-4 asks for basic and additional allowances separately, and each reduces taxable wages by a fixed annual amount. Because the rate is flat, allowances are the only lever. Our 2026 Illinois figures are still being cross-checked, so this page shows the rules and sources rather than an estimate.
The Illinois withholding rate, 2026
4.95%applied to taxable wages
Illinois works this out from a formula rather than a bracket table, so the amount withheld depends on what your state form says as well as what you earn. These are the steps the calculation actually takes:
- Subtract $2,925 per line 1 allowance and $1,000 per line 2 allowance
- Multiply annual taxable wages by 4.95%
Bonuses and supplemental pay
Illinois withholds supplemental wages — bonuses, commission, severance — at a flat 4.95%, separately from your regular salary. A bonus can therefore have a different amount withheld than the same money paid as salary, which is usually why a bonus arrives smaller than expected.
What the Illinois withholding form asks for
| Field | What it does | Where it appears |
|---|---|---|
| IL-W-4 line 1 allowances | Allowances for the taxpayer, spouse, and dependents claimed on line 1. | IL Form W-4, line 1 |
| IL-W-4 line 2 allowances | Additional allowances claimed on line 2; each reduces annual wages by $1,000. | IL Form W-4, line 2 |
Take-home pay in Illinois by salary
Single filer, paid every two weeks, no pre-tax deductions, 2026 rates. Change any of those in the calculator.
| Salary | Take-home (year) | Per paycheck | Total tax rate |
|---|---|---|---|
| $35,000 | $28,570.10 | $1,098.85 | 18.4% |
| $40,000 | $32,340.10 | $1,243.85 | 19.1% |
| $45,000 | $36,109.84 | $1,388.84 | 19.8% |
| $50,000 | $39,880.36 | $1,533.86 | 20.2% |
| $55,000 | $43,650.10 | $1,678.85 | 20.6% |
| $60,000 | $47,419.84 | $1,823.84 | 21.0% |
| $65,000 | $51,190.10 | $1,968.85 | 21.2% |
| $70,000 | $54,610.14 | $2,100.39 | 22.0% |
| $75,000 | $57,879.90 | $2,226.15 | 22.8% |
| $80,000 | $61,149.66 | $2,351.91 | 23.6% |
| $85,000 | $64,419.94 | $2,477.69 | 24.2% |
| $90,000 | $67,689.96 | $2,603.46 | 24.8% |
| $95,000 | $70,959.98 | $2,729.23 | 25.3% |
| $100,000 | $74,230.00 | $2,855.00 | 25.8% |
| $110,000 | $80,770.04 | $3,106.54 | 26.6% |
| $120,000 | $87,310.08 | $3,358.08 | 27.2% |
| $130,000 | $93,686.06 | $3,603.31 | 27.9% |
| $140,000 | $100,025.90 | $3,847.15 | 28.6% |
| $150,000 | $106,366.00 | $4,091.00 | 29.1% |
| $200,000 | $138,065.98 | $5,310.23 | 31.0% |
Notes and caveats
- Illinois IL-700-T for 2026 specifies a $2,925 basic allowance and 4.95% rate.
- The latest NFC bulletin available in this session, NFC-25-1745409482, specifies the same 4.95% rate and $1,000 additional allowance but still lists the 2025 basic allowance of $2,850. The ruleset uses the current Illinois DOR amount and is flagged pending NFC confirmation.
Sources
Every figure on this page is transcribed from a published source and carries the date it was read. Where two sources disagree, the disagreement is recorded rather than resolved silently.
Illinois Department of Revenue, 2026 IL-700-T Illinois Withholding Tax Tables — read 2026-07-19 · cross-checked against NFC-25-1745409482, Illinois State Income Tax Withholding; independent confirmation 2026-07-20- basicAllowance —
Illinois Department of Revenue, 2026 IL-700-T Illinois Withholding Tax Tables , How to Figure the Amount to Withhold · read 2026-07-19 - additionalAllowance —
Illinois Department of Revenue, 2026 IL-700-T Illinois Withholding Tax Tables , Formula method · read 2026-07-19
This is an estimate of payroll withholding, not tax advice, and not a prediction of your final tax bill. Withholding is what your employer sends in during the year; what you actually owe is settled when you file.