How much does a Civil Engineers actually take home in Illinois?
5.0% flat rate — 26.3% 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 Civil Engineers earning $97,870 in Illinois (single filer, standard deduction).
| Tax Component | Annual Amount | Effective Rate |
|---|---|---|
| Gross Salary (Median) | $97,870 | — |
| Federal Income Tax | -$13,372 | 13.7% |
| Illinois State Income Tax | -$4,844 | 5.0% |
| Social Security (OASDI) | -$6,067 | 6.2% |
| Medicare | -$1,419 | 1.5% |
| Total Taxes | -$25,704 | 26.3% |
| Take-Home Pay | $72,165 | 73.7% |
Take-home pay varies significantly across experience levels. Here is the after-tax breakdown for each salary percentile of Civil Engineers in Illinois.
| Percentile | Gross Salary | Total Taxes | Take-Home Pay | Tax Rate |
|---|---|---|---|---|
| 10th Percentile (P10) | $66,580 | -$14,877 | $51,702 | 22.3% |
| 25th Percentile (P25) | $78,010 | -$18,832 | $59,177 | 24.1% |
| Median (P50) | $97,870 | -$25,704 | $72,165 | 26.3% |
| 75th Percentile (P75) | $123,030 | -$34,567 | $88,462 | 28.1% |
| 90th Percentile (P90) | $139,190 | -$40,482 | $98,707 | 29.1% |
After federal income tax ($13,372), state tax ($4,844), and FICA ($7,487), a Civil Engineers in Illinois takes home $72,165 per year — or $6,013 per month. The effective tax rate of 26.3% is moderate compared to the national range.
Where does a Civil Engineers keep the most of their paycheck? Top 10 states ranked by after-tax take-home pay.
Illinois ranks #14 out of 51 states for Civil Engineers after-tax take-home pay.
A Civil Engineers in Illinois earning a median salary of $97,870 will take home approximately $72,165 per year after federal income tax ($13,372), state income tax ($4,844), and FICA ($7,487). That is $6,013 per month or $2,775 per bi-weekly paycheck.
The effective total tax rate for a Civil Engineers in Illinois is 26.3%, broken down as: federal income tax 13.7%, 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 Civil Engineers's median salary of $97,870, the state income tax amounts to $4,844 per year, which is an effective state rate of 5.0%.
After all taxes, a Civil Engineers in Illinois takes home approximately $6,013 per month, or about $34.70 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 $97,870 for Civil 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 — $72,165/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