This free Illinois paycheck calculator estimates your 2026 take-home pay after federal income tax, Illinois state income tax, Social Security, and Medicare.

Illinois Paycheck Calculator 2026

Illinois has a flat individual income tax rate of 4.95% on taxable income, and the Illinois Department of Revenue publishes 2026 withholding forms and tables for wages paid in 2026.

Enter your salary or hourly rate, select your pay frequency and filing status, add any pre-tax deductions, and instantly see your estimated net paycheck broken down line by line.

Illinois Paycheck Calculator Explained

Illinois does not use progressive tax brackets for wage income. Instead, the state applies a flat income tax rate, which makes the state portion of a paycheck easier to estimate than in many other states. Pre-tax contributions such as a 401(k), health insurance, HSA, or FSA may reduce taxable wages for federal and Illinois purposes.

For tax year 2026, the Illinois personal exemption allowance is $2,925 per exemption, subject to Illinois rules and eligibility. That allowance can reduce the amount of Illinois income tax withheld from each paycheck.

Federal payroll taxes still apply. Social Security is withheld at 6.2% up to the annual wage base, and Medicare is withheld at 1.45%. Higher earners may also owe additional Medicare tax under federal rules.

How the Calculator Works

The calculator converts annual or hourly income into the selected pay frequency before applying taxes and deductions. It then estimates federal withholding, Illinois state tax, and FICA to show an approximate take-home amount.

If you contribute to pre-tax retirement or benefit accounts, your take-home pay may increase relative to your gross income because taxable wages are reduced before tax is calculated. This can make a meaningful difference for salary and hourly employees alike.

Final withholding may vary depending on W-4 settings, payroll provider rules, and any additional deductions or employer-specific settings. Use the calculator for planning, budgeting, and comparing job offers or pay frequencies.

Illinois Wage Tax Details

Illinois wage taxation is straightforward compared with states that have multiple brackets or local wage taxes. Because the state uses a flat income tax rate, the biggest variables in your paycheck are your gross pay, pay frequency, filing status, and pre-tax deductions.

The Illinois Department of Revenue also issues updated withholding forms and tax guidance for 2026, which employers use to calculate paycheck withholding. That means your actual paycheck may differ slightly from a simple estimate if your payroll setup includes special withholding rules.

This page is useful for workers comparing salary versus hourly pay, budgeting monthly expenses, or estimating the effect of benefit deductions on net pay.

Why Use This Illinois Paycheck Calculator

This calculator is built for users searching for Illinois paycheck estimates, Illinois tax withholding, and Illinois take-home pay. It is also helpful when comparing gross pay versus net pay before accepting a job offer, changing pay frequency, or adjusting pre-tax deductions.

The calculator combines federal withholding, FICA, and Illinois state tax into one simple tool. That makes it easier to understand what portion of your paycheck you actually keep after taxes.

Frequently Asked Questions

What is the Illinois state income tax rate for 2026?

Illinois uses a flat state income tax rate of 4.95% on taxable income.

Does Illinois have tax brackets for paycheck withholding?

No. Illinois wage income is generally taxed at a flat rate instead of state tax brackets.

What is the Illinois personal exemption allowance for 2026?

The Illinois personal exemption allowance for 2026 is $2,925 per exemption, subject to Illinois rules and eligibility.

Do pre-tax deductions reduce Illinois taxable income?

Yes. Common pre-tax deductions like retirement contributions and certain benefit plans can reduce taxable wages for both federal and Illinois tax purposes.

Does this calculator include federal taxes?

Yes. It estimates federal income tax, Social Security, and Medicare along with Illinois state income tax.

Can I use this for hourly wages?

Yes. You can enter an hourly rate and pay frequency to estimate your Illinois paycheck.

Accuracy Note

Calculations on this page are based on IRS Rev. Proc. 2025-32, IRS Publication 15-T, and Illinois Department of Revenue guidance for 2026.