Illinois Tax Calculator (2024–2025)
Calculate your exact take-home pay in The Prairie State. Illinois uses a simple 4.95% flat state tax rate. Use our free tool to automatically calculate your state deductions, federal brackets, FICA, and net paycheck.
Updated for 2024 & 2025 Federal and State Tax Rules
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Enter your salary to calculate your Illinois take-home pay and tax breakdown.
Understanding Illinois Taxes
Benefit
Predictability
Unlike states with progressive brackets, Illinois charges a flat 4.95% to all workers, making it much easier to predict how overtime or bonuses will be taxed at the state level.
Requirement
IRS Brackets
You still must pay federal income tax based on the standard IRS progressive tax brackets (10% to 37%) depending on your total income.
Mandatory Rate
7.65% Total
A flat federal rate of 6.2% for Social Security and 1.45% for Medicare is deducted from nearly every Illinois paycheck automatically.
How Are Illinois Paychecks Calculated?
In 2020, Illinois voters rejected a measure that would have changed the state to a progressive income tax system. Because of this, the state retains its flat 4.95% rate, simplifying calculations compared to states like New York or California.
The Illinois Paycheck Formula
+ Gross Pay (Salary / Hourly Wages)- Federal Income Tax (based on brackets)- Social Security Tax (6.2%)- Medicare Tax (1.45%)- Illinois State Tax (4.95%)= Net Take-Home PayWhat About Local Taxes?
A major advantage of working in Illinois is the absence of local municipal income taxes. While cities and counties levy their own property and sales taxes, the income tax you see on your paycheck belongs entirely to the state and federal governments.
Wondering how this compares to states with a progressive tax rate? Check out our Maryland Paycheck Calculator.
View More Payroll CalculatorsIllinois Paycheck Examples
Approximate Breakdown (2024):
- Gross Pay: $60,000
- Federal Tax: -$5,055
- FICA (SS + Medicare): -$4,590
- Illinois State Tax: -$2,850
Net Pay: ~$47,505
~$3,958 per month
Approximate Breakdown (2024):
- Gross Pay: $150,000
- Federal Tax: -$15,645
- FICA (SS + Medicare): -$11,475
- Illinois State Tax: -$7,184
Net Pay: ~$115,696
~$9,641 per month
Frequently Asked Questions
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