Illinois Salary Paycheck Calculator
Enter your yearly salary and how often you're paid. We split it into paychecks and take out exactly what the tax tables say.
| Per paycheck | Amount | Per year |
|---|---|---|
| Gross pay | $2,115.38 | $55,000.00 |
| Federal income tax · withheld | −$170.00 | −$4,420.00 |
| Social Security (6.2%) | −$131.15 | −$3,410.00 |
| Medicare (1.45%) | −$30.67 | −$797.50 |
| Illinois income tax · withheld | −$99.14 | −$2,577.64 |
| Take-home pay | $1,684.42 | $43,794.86 |
How the federal income tax was worked out
| Pay subject to income tax, for the year · $2,115.38 × 26 paychecks | $55,000.00 |
| Minus the IRS withholding allowance · Pub 15-T Worksheet 1A, line 1g | −$8,600.00 |
| Adjusted yearly wage | $46,400.00 |
| Tax from the IRS yearly table · standard table | $4,420.00 |
| Federal income tax per paycheck · divided by 26 | $170.00 |
IRS Publication 15-T (2026), Worksheet 1A — the percentage method payroll software uses for a Form W-4 from 2020 or later. Your employer's figure can differ by a few cents because of rounding.
How the Illinois income tax was worked out
| Pay subject to Illinois tax this paycheck · same as federal: after pre-tax 401(k) and benefits | $2,115.38 |
| Minus IL-W-4 allowances for one paycheck · (1 × $2,925 + 0 × $1,000) ÷ 26 | −$112.50 |
| Illinois taxable pay | $2,002.88 |
| Illinois income tax this paycheck · × 4.95% (IL-700-T) | $99.14 |
Illinois salary after tax: common salaries
Take-home pay rounded to the dollar, for a single filer paid every two weeks with a standard W-4 and no 401(k) or benefits. Your own figure depends on your W-4 and deductions — use the calculator above.
| Salary | Per paycheck | Per year | Kept |
|---|---|---|---|
| $40,000 | $1,249 | $32,485 | 81% |
| $50,000 | $1,539 | $40,025 | 80% |
| $60,000 | $1,829 | $47,565 | 79% |
| $75,000 | $2,232 | $58,025 | 77% |
| $100,000 | $2,861 | $74,375 | 74% |
| $150,000 | $4,097 | $106,511 | 71% |
Salary to paycheck
Your salary is divided by the number of paychecks in the year: 52 weekly, 26 every two weeks, 24 twice a month, or 12 monthly. Every-two-weeks pay gives 26 checks, so two months a year have three paydays.
A traditional 401(k) lowers the pay federal income tax is worked out on, but not Social Security or Medicare. A Roth 401(k) comes out after tax — enter it as an after-tax deduction.
Salaried in Illinois
Illinois withholding on a salary is simple: 4.95% of your pay after pre-tax deductions, minus about $112.50 a paycheck for each basic allowance if you're paid every two weeks. A traditional 401(k) lowers your Illinois tax as well as your federal tax. Executive, administrative and professional employees may be paid monthly — choose "Month (12)" above if that's you.
What comes out of a Illinois paycheck
- Federal income tax withholding — worked out from your pay and your Form W-4, using the IRS tables for 2026.
- Social Security — 6.2% of your pay, up to $184,500 of pay in 2026. Above that, it stops for the rest of the year.
- Medicare — 1.45% of all your pay, plus 0.9% on pay above $200,000 in the year.
Illinois has a flat 4.95% income tax. Your employer works out Illinois withholding from the pay that is subject to federal income tax — so a traditional 401(k) and pre-tax health insurance lower it too — minus your IL-W-4 allowances:
- Basic allowances (IL-W-4 Line 1) are worth $2,925 a year each in 2026 — usually one for you and one for your spouse.
- Additional allowances (Line 2) are worth $1,000 a year each.
The yearly allowance total is divided by your number of paychecks, subtracted from each paycheck, and the rest is taxed at 4.95%. If you never gave your employer an IL-W-4, it must withhold with no allowances, so more comes out. Open "How the Illinois income tax was worked out" under the result to see every step.
Unemployment insurance is financed by employer payroll taxes — not by deductions from your wages.
Other Illinois calculators
Paycheck calculator · Hourly paycheck calculator · Salary paycheck calculator · What changed for 2026
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Sources
- IRS Publication 15-T (2026), Federal Income Tax Withholding Methods — Worksheet 1A and the annual percentage-method tables
- IRS Publication 15 (2026), Employer's Tax Guide — Social Security and Medicare rates
- Social Security Administration — 2026 wage base of $184,500
- IRS — tips and overtime deductions
- Illinois Department of Revenue — Booklet IL-700-T, Illinois Withholding Tax Tables (2026) — 4.95%; $2,925 per Line 1 allowance, $1,000 per Line 2 allowance; worked example
- Illinois Department of Revenue — Bulletin FY 2026-15 — exemption $2,850 for 2025, $2,925 for 2026
- Illinois Department of Revenue — Withholding Illinois income tax for my employees — no IL-W-4 means no allowances; reciprocity with Iowa, Kentucky, Michigan and Wisconsin
- 86 Ill. Adm. Code 100.7000 — withholding follows federal income tax withholding
- Illinois Department of Employment Security — What every worker should know — financed by employer payroll taxes, not deductions from wages
- Illinois Department of Labor — Minimum Wage Law — $15.00; $9.00 tipped; overtime after 40 hours
- Illinois Department of Labor — Wage payment FAQ — at least semi-monthly; final pay on the next regular payday
- Illinois Department of Labor — Paid Leave for All Workers Act FAQ
Questions
How much Illinois tax comes out of my paycheck?
4.95% of your pay after pre-tax deductions and your IL-W-4 allowances ($2,925 a year for each basic allowance in 2026, $1,000 for each additional one), divided across your paychecks.
How much is taken out of a $1,000 paycheck in Illinois?
For a single filer paid every two weeks with nothing else on the W-4, a $1,000 paycheck has about $38.08 of federal income tax, $62.00 of Social Security and $14.50 of Medicare taken out, $43.93 of Illinois income tax, leaving $841.49. Enter your own details in the calculator for your exact figure.
What is $20 an hour after taxes in Illinois?
Working 40 hours a week and paid every two weeks, $20 an hour is $1,600.00 before tax and about $1,295.82 after tax per paycheck — $33,691.22 a year — for a single filer with a standard W-4.
How many allowances should I claim on my IL-W-4?
The IL-W-4 worksheet explains it: generally one basic allowance for yourself and one for your spouse, plus additional allowances for dependents and some deductions. We can't advise on your situation, but you can try different numbers in the calculator to see the effect.
What happens if I didn't fill out an IL-W-4?
Your employer must withhold Illinois tax with no allowances, which takes more from each paycheck. Enter 0 in the basic allowances box to see that amount.
What is the minimum wage in Illinois?
$15.00 an hour for adults; $9.00 cash wage for tipped workers as long as tips make up the rest.