Last updated: 2025 BLS data · Page refreshed:
How much does a Biochemists and Biophysicists actually take home in Illinois?
5.0% flat rate — 25.2% effective total tax rateData: BLS OEWS 2025 + IRS/State Tax Brackets 2024 • Updated 2026-05-19
Detailed line-by-line tax calculation for a Biochemists and Biophysicists earning $87,010 in Illinois (single filer, standard deduction).
| Tax Component | Annual Amount | Effective Rate |
|---|---|---|
| Gross Salary (Median) | $87,010 | — |
| Federal Income Tax | -$10,983 | 12.6% |
| Illinois State Income Tax | -$4,306 | 4.9% |
| Social Security (OASDI) | -$5,394 | 6.2% |
| Medicare | -$1,261 | 1.4% |
| Total Taxes | -$21,946 | 25.2% |
| Take-Home Pay | $65,063 | 74.8% |
Take-home pay varies significantly across experience levels. Here is the after-tax breakdown for each salary percentile of Biochemists and Biophysicists in Illinois.
| Percentile | Gross Salary | Total Taxes | Take-Home Pay | Tax Rate |
|---|---|---|---|---|
| 10th Percentile (P10) | $60,060 | -$12,790 | $47,269 | 21.3% |
| 25th Percentile (P25) | $67,030 | -$15,033 | $51,996 | 22.4% |
| Median (P50) | $87,010 | -$21,946 | $65,063 | 25.2% |
| 75th Percentile (P75) | $136,040 | -$39,329 | $96,710 | 28.9% |
| 90th Percentile (P90) | $173,140 | -$52,626 | $120,513 | 30.4% |
After federal income tax ($10,983), state tax ($4,306), and FICA ($6,656), a Biochemists and Biophysicists in Illinois takes home $65,063 per year — or $5,421 per month. The effective tax rate of 25.2% is moderate compared to the national range.
With an effective total rate of 25.2%, a Biochemists and Biophysicists in Illinois keeps $65,064 of $87,010 gross — roughly typical for U.S. middle-income earners once federal, FICA and state taxes are combined.
Illinois applies a flat state income tax — every dollar of wage income is taxed at the same rate. For this Biochemists and Biophysicists salary that contributes $4,307 to the 4.9% effective state-tax burden.
Federal tax on this Biochemists and Biophysicists salary is $10,983 (50%), but combined state ($4,307, 20%) + FICA ($6,656, 30%) make up the other 50% of the bill.
Moving this same Biochemists and Biophysicists salary to a zero-state-tax state would yield around $69,371 net — a gain of $4,307 (6.6%) per year versus Illinois.
Illinois ranks #22 of 35 states for Biochemists and Biophysicists 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, $65,064 net/year works out to $5,422/month or $2,502/bi-weekly for this Biochemists and Biophysicists in Illinois — the numbers that actually hit a checking account after every deduction.
Where does a Biochemists and Biophysicists keep the most of their paycheck? Top 10 states ranked by after-tax take-home pay.
Illinois ranks #22 out of 35 states for Biochemists and Biophysicists after-tax take-home pay.
A Biochemists and Biophysicists in Illinois earning a median salary of $87,010 will take home approximately $65,063 per year after federal income tax ($10,983), state income tax ($4,306), and FICA ($6,656). That is $5,421 per month or $2,502 per bi-weekly paycheck.
The effective total tax rate for a Biochemists and Biophysicists in Illinois is 25.2%, broken down as: federal income tax 12.6%, Illinois state tax 4.9%, 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 Biochemists and Biophysicists's median salary of $87,010, the state income tax amounts to $4,306 per year, which is an effective state rate of 4.9%.
After all taxes, a Biochemists and Biophysicists in Illinois takes home approximately $5,421 per month, or about $31.28 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 $87,010 for Biochemists and Biophysicists 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 — $65,063/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