Illinois Take Home Pay Calculator
Illinois charges a flat 4.95% on wages after a small personal exemption, one of the higher flat rates in the country.
This link contains the numbers entered. Nothing is uploaded anywhere — all math happens in the browser.
Not tax advice: This calculator provides estimates for educational purposes only. It is not tax, legal, or financial advice. Your actual paycheck is determined by your employer's payroll system and your W-4. Consider speaking with a qualified tax professional about your situation.
Assumptions disclosed: Estimates use an annualized model: your annual tax is calculated from 2026 federal and state rules and divided evenly across your paychecks. Actual per-paycheck withholding uses IRS Publication 15-T tables and may differ. Bonuses, overtime, credits, deductions beyond the fields shown, and local taxes (except an amount you enter) are not modeled. Amounts are rounded to the nearest cent.
Data sources / updated: Federal parameters: IRS Revenue Procedure 2025-32 (2026 tax year). State parameters: official state department of revenue sources, verified 2026-10-12; sources per state are listed in the methodology. Page last updated: 2026-10-20.
How your take-home pay is calculated in Illinois
Every figure on this page starts from annual pay. The calculator adds up a full year of gross pay, subtracts the pre-tax deductions entered (traditional 401(k), HSA contributions and health insurance premiums), and applies the 2026 federal brackets after the standard deduction — $16,100 for single filers and $32,200 for married couples filing jointly in the federal model used here. Social Security is calculated at 6.2% of FICA wages up to the 2026 wage base of $184,500, and Medicare at 1.45%, with the additional 0.9% Medicare tax on FICA wages above $200,000 (single) or $250,000 (married). Traditional 401(k) contributions do not reduce FICA wages; HSA contributions and health premiums paid through payroll do. The annual tax is then divided evenly across the paychecks in the chosen frequency. That is an annualized estimate: an employer payroll system withholds per paycheck using IRS Publication 15-T tables, the employee W-4 and year-to-date wages, so a real paycheck differs somewhat from the figures here, and the annual totals are the reliable comparison.
One further limit: the effect of HSA contributions and health premiums on state tax varies by state and is not modeled in this version; on the state side, only the 401(k) contribution is applied. All amounts are before tax credits and are rounded to the nearest cent.
In the verified 2026 model, Illinois applies a flat rate of 4.95% to taxable income. Taxable income is pay after traditional 401(k) contributions and a personal exemption of $2,925 for single filers or $5,850 for married couples filing jointly.
The Illinois figure is 4.95% of pay after the 401(k) contribution and the personal exemption. The flat rate means there is no bracket planning in the state layer at all: each additional dollar of taxable pay costs 4.95 cents of Illinois tax, and each additional 401(k) dollar saves the same. The annual summary is useful here because the effective rate barely moves with salary, unlike graduated states where the blend shifts as income climbs through the steps.
The full method, including what the model leaves out, is on the methodology page.
Worked example: take-home pay on $77,000 in Illinois
The example below runs the Illinois benchmark salary with a 5% traditional 401(k) contribution, paid every two weeks. The state line illustrates the flat-rate pattern clearly: after the small exemption, the state tax tracks the salary at close to the full 4.95%, and the frequency strip shows the same annual figure divided four ways.
Benchmark salary $77,000 — BLS QCEW 2024 average annual pay for Illinois, rounded to the nearest $1,000.
| Line | Per paycheck | Annual |
|---|---|---|
| Gross pay | $2,961.54 | $77,000.00 |
| 401(k) contribution | $148.08 | $3,850.00 |
| Federal income tax | $279.35 | $7,263.00 |
| Social Security | $183.62 | $4,774.00 |
| Medicare | $42.94 | $1,116.50 |
| State income tax | $133.70 | $3,476.14 |
| Net pay | $2,173.86 | $56,520.36 |
Benchmark: take-home pay at four salaries in Illinois
Single filer, no deductions entered. Annual net and net every two weeks, produced by the same engine as the calculator above.
| Gross salary | Annual net | Net every 2 weeks |
|---|---|---|
| $40,000 | $32,484.79 | $1,249.41 |
| $60,000 | $47,564.79 | $1,829.41 |
| $80,000 | $61,294.79 | $2,357.49 |
| $100,000 | $74,374.79 | $2,860.57 |
Illinois state income tax notes
Illinois applies a flat rate of 4.95% to wage income in the verified model used here. In place of a standard deduction, the model uses a personal exemption of $2,925 for single filers and $5,850 for married couples filing jointly, subtracted along with traditional 401(k) contributions before the rate applies. Because the exemption is small relative to a full-time salary, the Illinois effective rate stays close to the 4.95% headline, closer than in flat-tax states with large standard deductions.
In the verified 2026 model, Illinois applies a flat rate of 4.95% to taxable income. Taxable income is pay after traditional 401(k) contributions and a personal exemption of $2,925 for single filers or $5,850 for married couples filing jointly.
2026 Illinois income tax brackets in this model
| Taxable income | Rate |
|---|---|
| $0 and up | 4.95% |
Source: Illinois Department of Revenue — https://www.illinois.gov/content/dam/soi/en/web/tax/forms/withholding/documents/currentyear/il-700-t.pdf (checked 2026-10-12). Amounts are before credits.
Frequently asked questions
How much is $77,000 after tax in Illinois?
On a $77,000 salary in Illinois (single filer, $3,850 traditional 401(k) contribution, paid every two weeks), the estimated take-home pay is $2,173.86 per paycheck and $56,520.36 per year. Federal income tax is $7,263.00, FICA is $5,890.50, and Illinois state income tax is $3,476.14 for the year. Figures are annualized estimates before credits.
What is the take-home pay on a $60,000 salary in Illinois?
For a single filer with no deductions entered, a $60,000 salary in Illinois gives estimated annual take-home pay of $47,564.79 — $1,829.41 every two weeks. That is after federal income tax of $5,020.00, FICA of $4,590.00 and state income tax of $2,825.21.
What is the Illinois state income tax rate for 2026?
Illinois applies a flat rate of 4.95% in the verified model used here. The amount it applies to is pay after traditional 401(k) contributions and a personal exemption of $2,925 for single filers or $5,850 for married couples filing jointly. Illinois does not use a standard deduction in this model, and there are no graduated brackets.
Why is the Illinois effective rate so close to 4.95%?
Two reasons combine: the rate is flat, so there are no cheap early brackets pulling the average down, and the personal exemption is small next to a full-time salary. At the Illinois benchmark salary, the exemption shelters only a few percent of pay, so the effective state rate lands just under the 4.95% headline. The annual summary on this page shows the resulting blend for the pay entered.
How does a 401(k) contribution change take-home pay in Illinois?
A traditional 401(k) contribution is subtracted before federal income tax is calculated, so the federal line falls. Social Security and Medicare are worked out on pay before the 401(k) contribution, so the FICA lines stay the same. On the state side, this calculator applies the contribution inside the verified Illinois model, as described in the tax notes on this page. The stub recalculates every line when the contribution changes.
What changes between biweekly and semimonthly pay?
The annual tax is the same in this annualized model; only the division changes. Biweekly pay means 26 paychecks a year and semimonthly means 24, so each semimonthly check is larger while the yearly total lands in the same place. The frequency strip above the annual summary shows the same pay divided all four ways: weekly, every two weeks, twice a month and monthly.