Last updated: 2025 BLS data · Page refreshed:
How much does a Physicists actually take home in Illinois?
5.0% flat rate — 29.0% effective total tax rateData: BLS OEWS 2025 + IRS/State Tax Brackets 2024 • Updated 2026-05-19
Detailed line-by-line tax calculation for a Physicists earning $137,140 in Illinois (single filer, standard deduction).
| Tax Component | Annual Amount | Effective Rate |
|---|---|---|
| Gross Salary (Median) | $137,140 | — |
| Federal Income Tax | -$22,452 | 16.4% |
| Illinois State Income Tax | -$6,788 | 5.0% |
| Social Security (OASDI) | -$8,502 | 6.2% |
| Medicare | -$1,988 | 1.4% |
| Total Taxes | -$39,731 | 29.0% |
| Take-Home Pay | $97,408 | 71.0% |
Take-home pay varies significantly across experience levels. Here is the after-tax breakdown for each salary percentile of Physicists in Illinois.
| Percentile | Gross Salary | Total Taxes | Take-Home Pay | Tax Rate |
|---|---|---|---|---|
| 10th Percentile (P10) | $81,830 | -$20,154 | $61,675 | 24.6% |
| 25th Percentile (P25) | $82,110 | -$20,251 | $61,858 | 24.7% |
| Median (P50) | $137,140 | -$39,731 | $97,408 | 29.0% |
| 75th Percentile (P75) | $175,510 | -$53,346 | $122,163 | 30.4% |
| 90th Percentile (P90) | $221,380 | -$68,670 | $152,709 | 31.0% |
After federal income tax ($22,452), state tax ($6,788), and FICA ($10,491), a Physicists in Illinois takes home $97,408 per year — or $8,117 per month. The effective tax rate of 29.0% is moderate compared to the national range.
A Physicists in Illinois loses 29.0% of gross pay to taxes — higher than the ~25% national midpoint. Of the $137,140 gross, $97,408 lands in the paycheck after federal ($22,452), state ($6,788), and FICA ($10,491) withholding.
Illinois applies a flat state income tax — every dollar of wage income is taxed at the same rate. For this Physicists salary that contributes $6,788 to the 5.0% effective state-tax burden.
Federal income tax ($22,452) accounts for 57% of the total tax bill — the single largest deduction. FICA adds $10,491 (26%), and state tax the remaining $6,788 (17%).
The state-tax gap is substantial: a Physicists earning this gross in a no-income-tax state would net about $104,197 — an extra $6,788 (7.0%) annually compared with Illinois.
Illinois ranks #31 of 43 states for Physicists after-tax pay — lower half of the national distribution. Either gross wages trail the national median, state tax is elevated, or both.
Translated into paycheck cadences, $97,408 net/year works out to $8,117/month or $3,746/bi-weekly for this Physicists in Illinois — the numbers that actually hit a checking account after every deduction.
Where does a Physicists keep the most of their paycheck? Top 10 states ranked by after-tax take-home pay.
Illinois ranks #31 out of 43 states for Physicists after-tax take-home pay.
A Physicists in Illinois earning a median salary of $137,140 will take home approximately $97,408 per year after federal income tax ($22,452), state income tax ($6,788), and FICA ($10,491). That is $8,117 per month or $3,746 per bi-weekly paycheck.
The effective total tax rate for a Physicists in Illinois is 29.0%, broken down as: federal income tax 16.4%, Illinois state tax 5.0%, and FICA (Social Security + Medicare) 7.6%. This assumes a single filer with the standard deduction for 2024.
Illinois has a 5.0% flat rate. On a Physicists's median salary of $137,140, the state income tax amounts to $6,788 per year, which is an effective state rate of 5.0%.
After all taxes, a Physicists in Illinois takes home approximately $8,117 per month, or about $46.83 per hour (based on a standard 2,080-hour work year). These figures assume a single filer, standard deduction, and no additional pre-tax deductions.
We start with the 2025 BLS median salary of $137,140 for Physicists in Illinois, then subtract: federal income tax using 2024 IRS brackets ($14,600 standard deduction), Illinois state income tax (5.0% flat rate), Social Security (6.2% up to $168,600), and Medicare (1.45%). The result — $97,408/yr — does not include local taxes, pre-tax deductions (401k, HSA), or tax credits.
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This estimate assumes a single filer using the 2024 standard deduction ($14,600), with W-2 employment income only. It does not account for: itemized deductions, tax credits (e.g. earned income credit, child tax credit), local/city taxes, pre-tax contributions (401k, HSA, FSA), self-employment tax, or additional income sources. Actual take-home pay may differ. Consult a tax professional for personalized advice.
Our Methodology · Data Sources · Salary: BLS OEWS · Tax: IRS + State DOR