How much does a Petroleum Engineers actually take home in Illinois?
5.0% flat rate — 28.9% effective total tax rateData: BLS OEWS 2024 + IRS/State Tax Brackets 2024 • Updated 2026-04-02
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Detailed line-by-line tax calculation for a Petroleum Engineers earning $136,190 in Illinois (single filer, standard deduction).
| Tax Component | Annual Amount | Effective Rate |
|---|---|---|
| Gross Salary (Median) | $136,190 | — |
| Federal Income Tax | -$22,224 | 16.3% |
| Illinois State Income Tax | -$6,741 | 5.0% |
| Social Security (OASDI) | -$8,443 | 6.2% |
| Medicare | -$1,974 | 1.5% |
| Total Taxes | -$39,384 | 28.9% |
| Take-Home Pay | $96,805 | 71.1% |
Take-home pay varies significantly across experience levels. Here is the after-tax breakdown for each salary percentile of Petroleum Engineers in Illinois.
| Percentile | Gross Salary | Total Taxes | Take-Home Pay | Tax Rate |
|---|---|---|---|---|
| 10th Percentile (P10) | $52,020 | -$10,812 | $41,207 | 20.8% |
| 25th Percentile (P25) | $92,000 | -$23,673 | $68,327 | 25.7% |
| Median (P50) | $136,190 | -$39,384 | $96,805 | 28.9% |
| 75th Percentile (P75) | $169,920 | -$51,647 | $118,272 | 30.4% |
| 90th Percentile (P90) | $227,700 | -$71,153 | $156,546 | 31.2% |
After federal income tax ($22,224), state tax ($6,741), and FICA ($10,418), a Petroleum Engineers in Illinois takes home $96,805 per year — or $8,067 per month. The effective tax rate of 28.9% is moderate compared to the national range.
Where does a Petroleum Engineers keep the most of their paycheck? Top 10 states ranked by after-tax take-home pay.
Illinois ranks #11 out of 26 states for Petroleum Engineers after-tax take-home pay.
A Petroleum Engineers in Illinois earning a median salary of $136,190 will take home approximately $96,805 per year after federal income tax ($22,224), state income tax ($6,741), and FICA ($10,418). That is $8,067 per month or $3,723 per bi-weekly paycheck.
The effective total tax rate for a Petroleum Engineers in Illinois is 28.9%, broken down as: federal income tax 16.3%, 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 Petroleum Engineers's median salary of $136,190, the state income tax amounts to $6,741 per year, which is an effective state rate of 5.0%.
After all taxes, a Petroleum Engineers in Illinois takes home approximately $8,067 per month, or about $46.54 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 2024 BLS median salary of $136,190 for Petroleum Engineers 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 — $96,805/yr — does not include local taxes, pre-tax deductions (401k, HSA), or tax credits.
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