Key Takeaways
- Illinois taxes income at a flat 4.95%. Every earner pays the same rate on taxable income.
- The 2026 exemption allowance is $2,925 per person, which replaces a standard deduction.
- Federal taxes still dominate your check: income tax, Social Security (6.2%), and Medicare (1.45%).
- No city income tax exists, so Chicago workers pay the same state rate as everyone else.
- A $60,000 salary nets about $47,600 for a single filer.
What Is an Illinois Paycheck Calculator?
An Illinois paycheck calculator estimates your net pay after federal taxes, Illinois income tax, and payroll deductions. You enter your pay, pay frequency, filing status, and deductions, and the tool returns your take-home amount.
Illinois calculators involve fewer steps than most states because the state tax rate is flat. You still need to account for the state’s exemption allowance and your federal withholding.
Use one to:
- Compare job offers across Illinois cities or other states
- Budget around your real monthly income
- See how a 401(k) or HSA contribution changes your check
- Confirm your employer withholds the correct amounts
How to Calculate Your Illinois Take-Home Pay
You can estimate your paycheck without software. Follow these steps.
- Start with gross pay for the pay period.
- Subtract pre-tax deductions, such as traditional 401(k) contributions, health premiums, and HSA contributions.
- Calculate federal income tax withholding using your W-4.
- Subtract FICA taxes: 6.2% for Social Security and 1.45% for Medicare.
- Calculate Illinois income tax: subtract your exemption allowances, then multiply by 4.95%.
- Subtract post-tax deductions, such as Roth contributions or garnishments.
- Arrive at net pay.
Illinois Income Tax Calculator: How the Flat Tax Works
Illinois does not use tax brackets. If you have a dollar or $1 billion subject to Illinois income tax, you owe 4.95% of that money to the state.
The state applies that rate after your exemption allowance. The Illinois income tax rate is 4.95%, and the exemption allowance is $2,925.
Illinois State Tax Formula
Illinois tax = (Annual wages − Exemption allowances) × 4.95%
Illinois has no standard deduction. Instead, each person you claim reduces your taxable income by $2,925.
Form IL-W-4: Allowances Explained
Your employer uses Form IL-W-4 to withhold state tax. It works separately from the federal W-4.
- Line 1 allowances: Each Line 1 allowance is worth $2,925 in 2026, and each Line 2 allowance is worth $1,000.
- Line 1: Claim yourself and, if you claim your spouse as a dependent, your spouse.
- Line 2: Claim additional allowances for dependents and other qualifying items.
- No form on file: Your employer assumes zero allowances, which increases withholding.
Exemption Phase-Out for High Earners
High earners lose the exemption allowance. Above federal AGI of $250,000 for single filers or $500,000 for joint filers, Illinois disallows the personal exemption entirely.
2026 Federal Taxes in Your Illinois Paycheck
Federal withholding takes the largest share of your check. Use these 2026 figures.
Standard Deduction
The 2026 federal standard deduction is $16,100 for single filers and $32,200 for joint filers. Heads of household receive $24,150.
2026 Federal Income Tax Brackets
| Rate | Single | Married Filing Jointly |
|---|---|---|
| 10% | Up to $12,400 | Up to $24,800 |
| 12% | $12,401 to $50,400 | $24,801 to $100,800 |
| 22% | $50,401 to $105,700 | $100,801 to $211,400 |
| 24% | $105,701 to $201,775 | $211,401 to $403,550 |
| 32% | $201,776 to $256,225 | $403,551 to $512,450 |
| 35% | $256,226 to $640,600 | $512,451 to $768,700 |
| 37% | Over $640,600 | Over $768,700 |
FICA Payroll Taxes
- Social Security: 6.2% on wages up to $184,500 in 2026
- Medicare: 1.45% on all wages
- Additional Medicare tax: 0.9% on wages above $200,000 for single filers
Illinois Salary Calculator: Worked Examples
These examples assume a single filer with one IL-W-4 allowance, the federal standard deduction, and no pre-tax deductions or credits.
Example 1: $60,000 Salary
| Item | Annual Amount |
|---|---|
| Gross pay | $60,000 |
| Federal income tax | $5,020 |
| Social Security and Medicare | $4,590 |
| Illinois tax: ($60,000 − $2,925) × 4.95% | $2,825 |
| Estimated net pay | about $47,565 |
That equals roughly $1,829 per biweekly check, or $3,964 per month.
Example 2: $85,000 Salary
| Item | Annual Amount |
|---|---|
| Gross pay | $85,000 |
| Federal income tax | $9,870 |
| Social Security and Medicare | $6,503 |
| Illinois tax: ($85,000 − $2,925) × 4.95% | $4,063 |
| Estimated net pay | about $64,565 |
That equals roughly $2,483 per biweekly check, or $5,380 per month.
Example 3: $120,000 Salary
| Item | Annual Amount |
|---|---|
| Gross pay | $120,000 |
| Federal income tax | $17,570 |
| Social Security and Medicare | $9,180 |
| Illinois tax: ($120,000 − $2,925) × 4.95% | $5,795 |
| Estimated net pay | about $87,455 |
That equals roughly $3,364 per biweekly check, or $7,288 per month.
Illinois Pay Calculator for Hourly Workers
An Illinois pay calculator starts with your annual wages. Multiply your hourly rate by your weekly hours and by 52.
Example at $20 per hour, 40 hours per week:
- Annual gross pay: $20 × 40 × 52 = $41,600
- Federal income tax: $2,812
- FICA (7.65%): $3,182
- Illinois tax: ($41,600 − $2,925) × 4.95% = $1,914
- Estimated net pay: about $33,691, or roughly $648 per week
This estimate ignores credits, health premiums, and retirement contributions. Your pay stub will differ if you have those.
How Illinois Compares With Other States
State tax changes your take-home pay. This table shows approximate annual net pay on an $85,000 salary for a single filer in 2026.
| State | State Income Tax | Approx. Net Pay |
|---|---|---|
| Texas or Florida | None | about $68,630 |
| North Carolina | Flat 3.99% | about $65,745 |
| Illinois | Flat 4.95% | about $64,565 |
Illinois costs this worker about $4,060 more per year than a no-income-tax state. Property taxes, rent, and wages also differ, so compare your full budget.
Does Chicago or Any Illinois City Tax Wages?
No. Illinois cities and counties do not levy local income taxes on wages. No cities within Illinois charge any additional municipal income taxes.
Chicago workers see the same 4.95% state tax as workers in Springfield or Peoria. Local costs show up elsewhere, such as sales and property taxes.
What Other Deductions Appear on an Illinois Pay Stub?
Illinois does not charge employees for state disability insurance or unemployment insurance. Illinois has no local wage tax and no employee unemployment contribution. Employers pay unemployment insurance themselves.
Your pay stub may still show these lines:
- Federal income tax
- Social Security and Medicare
- Illinois income tax
- Pre-tax benefits: health, dental, vision, HSA, FSA, and 401(k)
- Post-tax deductions: Roth contributions, union dues, and garnishments
Illinois Wage and Pay Rules to Know
Illinois adds worker protections that affect your paycheck.
- Minimum wage: Illinois’ statewide minimum wage is $15.00 per hour. Chicago and some other localities set higher minimums that adjust each year, so verify your local rate.
- Overtime: Non-exempt employees earn 1.5 times their regular rate for hours beyond 40 in a workweek.
- Paid leave: Illinois requires employers to provide 40 hours of paid leave that workers can use for any reason.
- Pay frequency: Most employers must pay at least twice a month under the Illinois Wage Payment and Collection Act.
How Pre-Tax Deductions Change Your Illinois Paycheck
Pre-tax deductions lower both federal and Illinois taxable income. They shrink your tax bill, but they also reduce your check.
Example: You earn $60,000 and contribute 6% ($3,600) to a traditional 401(k).
- Federal income tax: about $4,588, down from $5,020
- Illinois tax: ($60,000 − $3,600 − $2,925) × 4.95% = about $2,647, down from $2,825
- FICA: still $4,590, because 401(k) contributions do not reduce FICA wages
- Net pay: about $47,175, down from $47,565
You save $3,600 for retirement, yet your take-home pay falls only about $390. The tax savings cover most of the difference.
Does Illinois Tax Social Security and Retirement Income?
Illinois does not tax Social Security benefits, and it exempts most qualified retirement income. The state taxes capital gains and other investment income at the flat 4.95% rate. Confirm your situation with the Illinois Department of Revenue.
7 Ways to Increase Your Illinois Take-Home Pay
- Update your IL-W-4 so you claim every allowance you qualify for.
- Review your federal W-4 to match withholding to your real tax.
- Contribute to a traditional 401(k) to cut federal and state taxable income.
- Fund an HSA or FSA with pre-tax dollars.
- Claim credits, such as the Illinois earned income tax credit. The 2026 credit is 20% of the federal amount.
- Capture your employer match in your retirement plan.
- Check each pay stub for errors and missing allowances.
How to Choose a Reliable Paycheck Estimator in Illinois
A good paycheck estimator for Illinois earns trust through transparency. Look for these features:
- 2026 federal and Illinois data
- The $2,925 exemption allowance and IL-W-4 inputs
- Filing status and W-4 fields
- Pre-tax and post-tax deduction options
- Visible assumptions you can verify
For the most authoritative federal check, use the IRS Tax Withholding Estimator.
Common Mistakes When Estimating Illinois Pay
- Using the wrong tax rate. Illinois uses 4.95%, not a bracket system.
- Forgetting the exemption allowance when you calculate state tax
- Skipping FICA, which takes 7.65% from most paychecks
- Using 24 pay periods for a biweekly schedule instead of 26
- Ignoring pre-tax deductions
- Using outdated federal brackets
- Treating withholding as your final tax bill
Frequently Asked Questions
What is the Illinois state income tax rate?
Illinois charges a flat 4.95% on taxable income. The rate does not change with income or filing status.
How much of my paycheck goes to taxes in Illinois?
A single filer earning $60,000 pays about 21% in total taxes, including federal income tax, FICA, and Illinois tax.
What is the Illinois exemption allowance for 2026?
The allowance is $2,925 per person claimed. High earners lose it above $250,000 (single) or $500,000 (joint) of federal AGI.
Does Illinois have a standard deduction?
No. Illinois uses exemption allowances instead of a standard deduction.
Does Illinois tax capital gains?
Yes. Illinois taxes capital gains at the flat 4.95% rate, in addition to federal capital gains tax.
Is there an Illinois paycheck calculator I can trust?
Choose one that uses the 4.95% rate, the $2,925 allowance, and current federal data. You can also follow the steps above in a spreadsheet.
Do I need to fill out both a federal W-4 and an IL-W-4?
Yes. The federal form controls federal withholding, and the IL-W-4 controls Illinois withholding.
Final Thoughts
An Illinois paycheck calculator stays simple because the state uses one flat rate. Subtract your exemption allowance, multiply by 4.95%, and add your federal taxes and FICA.
Run your numbers before you accept a job or change your retirement contributions. Then compare the estimate with your next pay stub to confirm your withholding is correct.
This article provides general educational information, not personalized tax advice. Tax laws change often, so confirm current figures with the IRS, the Illinois Department of Revenue, or a qualified tax professional.