Illinois Hourly Paycheck Calculator
Estimate your net (take-home) pay after taxes — with a clear breakdown of federal, FICA, and Illinois withholding. Accurate estimates based on current Illinois and federal tax guidelines.
Your Estimated Illinois Hourly Paycheck
See your take-home pay and exactly why. All results are estimates and may differ slightly due to rounding.
Illinois Paycheck Calculator 2025
Accurate calculations for Illinois residents (4.95% Flat Tax)
Basic Information
Overtime Details
Pre-tax Deductions
Your Illinois Paycheck
Deductions
Illinois Tax Info
Illinois has a flat state income tax rate of 4.95%.
- Calculations based on 2025 rates
- Does not include specific local non-income taxes
- Pre-tax deductions lower your taxable income
Consult a tax professional for precise advice.
How We Calculate Your Pay
We combine federal tax data with Illinois’s flat 4.95% state tax rate to give you a precise estimate.
Your Pay
Enter your hourly rate, hours worked, and pay frequency.
Tax Setup
Enter Federal filing status and Illinois allowances (IL-W-4).
Deductions
Add pre-tax (401k, Insurance) and post-tax deductions.
Your Results
See a detailed breakdown of Net Pay, Federal Tax, Social Security, and IL Tax.
Why Your Net Pay Is Different Each Time
Several factors determine how much money actually lands in your bank account:
1. Federal Tax
Federal withholding depends on your W-4 information and filing status (Single, Married, etc). This is usually the largest deduction.
2. FICA Taxes
Social Security (6.2%) and Medicare (1.45%) are fixed percentage taxes taken from almost every paycheck nationwide.
3. Illinois Flat Tax
Illinois uses a flat state income tax rate of 4.95% on taxable income. This makes predicting your state tax liability easier.
Illinois Paycheck FAQ
What taxes are taken out of my Illinois paycheck?
Your paycheck will show deductions for Federal income tax, Social Security (6.2%), Medicare (1.45%), and the Illinois flat state income tax (4.95%).
Does Illinois have local income tax?
Typically, no. Most cities and counties in Illinois do not impose a separate local personal income tax, unlike some other states.
Can this calculator handle overtime?
Yes. Simply enter your total overtime hours. We calculate overtime pay at 1.5× your standard hourly rate.
Why doesn’t this match my actual paycheck exactly?
Small differences may occur due to specific employer payroll software rounding rules, exact pay periods, or pre-tax benefit specifics.
What is IL-W-4?
The IL-W-4 is the Illinois Employee’s Withholding Allowance Certificate. It determines how many allowances you claim, which affects how much state tax is withheld.
Disclaimer: This tool calculates estimates based on statutory tax rates. Actual pay may vary depending on employer specific payroll methods, rounding, and pre-tax benefit plan administration. Not legal or tax advice.