Last updated: 2025 BLS data · Page refreshed:
How much does a Materials Scientists actually take home in Illinois?
5.0% flat rate — 28.3% effective total tax rateData: BLS OEWS 2025 + IRS/State Tax Brackets 2024 • Updated 2026-05-19
Detailed line-by-line tax calculation for a Materials Scientists earning $125,850 in Illinois (single filer, standard deduction).
| Tax Component | Annual Amount | Effective Rate |
|---|---|---|
| Gross Salary (Median) | $125,850 | — |
| Federal Income Tax | -$19,742 | 15.7% |
| Illinois State Income Tax | -$6,229 | 5.0% |
| Social Security (OASDI) | -$7,802 | 6.2% |
| Medicare | -$1,824 | 1.5% |
| Total Taxes | -$35,599 | 28.3% |
| Take-Home Pay | $90,250 | 71.7% |
Take-home pay varies significantly across experience levels. Here is the after-tax breakdown for each salary percentile of Materials Scientists in Illinois.
| Percentile | Gross Salary | Total Taxes | Take-Home Pay | Tax Rate |
|---|---|---|---|---|
| 10th Percentile (P10) | $84,070 | -$20,929 | $63,140 | 24.9% |
| 25th Percentile (P25) | $104,350 | -$27,946 | $76,403 | 26.8% |
| Median (P50) | $125,850 | -$35,599 | $90,250 | 28.3% |
| 75th Percentile (P75) | $145,620 | -$42,835 | $102,784 | 29.4% |
| 90th Percentile (P90) | $184,130 | -$55,967 | $128,162 | 30.4% |
After federal income tax ($19,742), state tax ($6,229), and FICA ($9,627), a Materials Scientists in Illinois takes home $90,250 per year — or $7,520 per month. The effective tax rate of 28.3% is moderate compared to the national range.
A Materials Scientists in Illinois loses 28.3% of gross pay to taxes — higher than the ~25% national midpoint. Of the $125,850 gross, $90,250 lands in the paycheck after federal ($19,742), state ($6,230), and FICA ($9,628) withholding.
Illinois applies a flat state income tax — every dollar of wage income is taxed at the same rate. For this Materials Scientists salary that contributes $6,230 to the 5.0% effective state-tax burden.
Federal income tax ($19,742) accounts for 55% of the total tax bill — the single largest deduction. FICA adds $9,628 (27%), and state tax the remaining $6,230 (17%).
The state-tax gap is substantial: a Materials Scientists earning this gross in a no-income-tax state would net about $96,480 — an extra $6,230 (6.9%) annually compared with Illinois.
Illinois ranks #13 of 30 states for Materials Scientists after-tax pay — comfortably in the upper half.
Translated into paycheck cadences, $90,250 net/year works out to $7,521/month or $3,471/bi-weekly for this Materials Scientists in Illinois — the numbers that actually hit a checking account after every deduction.
Where does a Materials Scientists keep the most of their paycheck? Top 10 states ranked by after-tax take-home pay.
Illinois ranks #13 out of 30 states for Materials Scientists after-tax take-home pay.
A Materials Scientists in Illinois earning a median salary of $125,850 will take home approximately $90,250 per year after federal income tax ($19,742), state income tax ($6,229), and FICA ($9,627). That is $7,520 per month or $3,471 per bi-weekly paycheck.
The effective total tax rate for a Materials Scientists in Illinois is 28.3%, broken down as: federal income tax 15.7%, 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 Materials Scientists's median salary of $125,850, the state income tax amounts to $6,229 per year, which is an effective state rate of 5.0%.
After all taxes, a Materials Scientists in Illinois takes home approximately $7,520 per month, or about $43.39 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 $125,850 for Materials Scientists 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 — $90,250/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