State income tax structure
Flat state income tax.
2026 ILLINOIS TAKE-HOME PAY ESTIMATOR
Illinois Paycheck Calculator
Estimate your 2026 Illinois take-home pay after federal withholding, Social Security, Medicare, state tax and applicable payroll deductions. Illinois applies a flat individual income tax rate.
4.95% flat withholding2026 federal tablesFree to use
ILLINOIS PAYCHECK TAXES
What can come out of a Illinois paycheck?
The calculation separates federal withholding, FICA, state income tax, local tax where supported, state payroll programs, and employee deductions.
Social Security
Employee Social Security applies to covered wages up to the 2026 federal wage base.
Medicare
Standard employee Medicare tax applies to covered wages, with additional withholding at higher wage levels.
Illinois payroll environment
Flat state income tax.
Mandatory state programs
No separate mandatory employee payroll program is included.
WORKED EXAMPLE
A $65,000 salary in Illinois
Load a biweekly $65,000 annual salary into the calculator. The result updates using the selected W-4 details and Illinois module.
Annual salary$65,000
Pay scheduleBiweekly
State structureFlat
REFERENCE SALARIES
Common Illinois salary examples
Select a salary to load it into the calculator using biweekly pay.
Nearby state calculators
Compare paycheck deductions with surrounding states.
Related tax environments
Explore states with a similar broad income-tax structure.
ILLINOIS FAQ
Illinois paycheck questions
Does Illinois have state income tax on paychecks?
Yes. Illinois uses 4.95% flat withholding for paycheck withholding.
What is the Illinois income tax rate in 2026?
4.95% flat withholding. The exact amount can also depend on the state withholding certificate, filing status, allowances, deductions, locality, payroll-period rules, and rounding.
Does this calculator include local taxes in Illinois?
No local income tax is included in this estimate.
Does Illinois have an additional employee payroll program deduction?
No separate mandatory employee payroll program is included.
Why could my actual Illinois paycheck be different?
Employer payroll settings, state withholding certificates, benefits, retirement plans, bonuses, multiple jobs, taxable fringe benefits, local taxes, rounding and garnishments can all change the final amount.
METHODOLOGY
How this estimate is built
Reviewed 2026-07-11Federal income tax uses the 2026 IRS Publication 15-T automated percentage method. Employee Social Security is calculated at 6.2% up to the 2026 wage base, and standard Medicare at 1.45%.
Uses the Illinois percentage method: 4.95% of annualized Illinois wages after the 2026 exemption allowance amount.
State reference: 4.95% flat withholding. No separate mandatory employee payroll program is included.
Important estimate limitation
This calculator provides an informational estimate and is not tax, legal, accounting or payroll advice. Verify state and local withholding against your employer's payroll records and current official guidance.