Illinois Take-Home Pay Calculator

Estimate your net paycheck in Illinois after federal taxes, FICA, and state income tax deductions.

· CalcFlow Editorial

Illinois State Tax (IL)

Approximate effective rate for middle-income earners: 4.95%. Brackets: Flat 4.95% (constitutionally mandated).

Illinois has a flat 4.95% income tax rate mandated by the state constitution. A 2020 ballot measure to replace this with a graduated system was defeated by voters.

$

Your annual salary before any deductions or taxes, as shown on your offer letter or pay stub.

Affects your standard deduction and tax brackets. Most single, unmarried people select 'Single'.

%

Find your state's income tax rate on your state government website. Seven states have 0% income tax.

$

Enter your annual 401(k), HSA, or FSA contributions. These reduce your taxable income before taxes are calculated.

Enter values above and click Calculate to see your results.

Results shown are estimates for informational purposes only. Nothing on CalcFlow is financial, tax, legal, or medical advice. Always consult a qualified professional before making important decisions.

How to Use This Calculator for Illinois

Use 4.95% as the starting state tax rate for Illinois. The calculator above uses the state tax rate field — enter the rate that matches your income level for the most accurate estimate.

Illinois Take-Home Pay — Frequently Asked Questions

Frequently Asked Questions

Q

What is the state income tax rate in Illinois?

Illinois has a state income tax rate of approximately 4.95% for middle-income earners. Illinois has a flat 4.95% income tax rate mandated by the state constitution. A 2020 ballot measure to replace this with a graduated system was defeated by voters. Tax brackets: Flat 4.95% (constitutionally mandated).
Q

How do I calculate take-home pay in Illinois?

Start with your gross annual salary. Subtract your pre-tax deductions (401k, HSA). Apply federal tax brackets and the 2025 standard deduction. Add FICA taxes (6.2% Social Security up to $168,600, plus 1.45% Medicare). Then apply Illinois's state income tax of approximately 4.95%. The result is your estimated net annual take-home pay.
Q

Does Illinois have any special payroll taxes I should know about?

Illinois has a flat 4.95% income tax rate mandated by the state constitution. A 2020 ballot measure to replace this with a graduated system was defeated by voters.
Q

How accurate is this take-home pay estimate?

This calculator provides a close estimate using 2025 federal tax brackets, standard deductions, and approximate state tax rates. Your actual paycheck may differ based on your exact withholding elections (W-4), employer benefits, supplemental wages, local taxes, or specific deduction amounts. Use this as a planning tool and consult a tax professional for exact figures.

Other State Take-Home Pay Calculators

CaliforniaTexasFloridaNew YorkWashingtonPennsylvaniaOhioAll States
View the main Take-Home Pay Calculator (all states)