How much does a Computer and Information Research Scientists actually take home in Illinois?
5.0% flat rate — 27.6% effective total tax rateData: BLS OEWS 2024 + IRS/State Tax Brackets 2024 • Updated 2026-04-06
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Detailed line-by-line tax calculation for a Computer and Information Research Scientists earning $116,450 in Illinois (single filer, standard deduction).
| Tax Component | Annual Amount | Effective Rate |
|---|---|---|
| Gross Salary (Median) | $116,450 | — |
| Federal Income Tax | -$17,486 | 15.0% |
| Illinois State Income Tax | -$5,764 | 5.0% |
| Social Security (OASDI) | -$7,219 | 6.2% |
| Medicare | -$1,688 | 1.5% |
| Total Taxes | -$32,159 | 27.6% |
| Take-Home Pay | $84,290 | 72.4% |
Take-home pay varies significantly across experience levels. Here is the after-tax breakdown for each salary percentile of Computer and Information Research Scientists in Illinois.
| Percentile | Gross Salary | Total Taxes | Take-Home Pay | Tax Rate |
|---|---|---|---|---|
| 10th Percentile (P10) | $69,280 | -$15,811 | $53,468 | 22.8% |
| 25th Percentile (P25) | $86,610 | -$21,808 | $64,801 | 25.2% |
| Median (P50) | $116,450 | -$32,159 | $84,290 | 27.6% |
| 75th Percentile (P75) | $134,110 | -$38,622 | $95,487 | 28.8% |
| 90th Percentile (P90) | $147,690 | -$43,593 | $104,096 | 29.5% |
After federal income tax ($17,486), state tax ($5,764), and FICA ($8,908), a Computer and Information Research Scientists in Illinois takes home $84,290 per year — or $7,024 per month. The effective tax rate of 27.6% is moderate compared to the national range.
Where does a Computer and Information Research Scientists keep the most of their paycheck? Top 10 states ranked by after-tax take-home pay.
Illinois ranks #26 out of 42 states for Computer and Information Research Scientists after-tax take-home pay.
A Computer and Information Research Scientists in Illinois earning a median salary of $116,450 will take home approximately $84,290 per year after federal income tax ($17,486), state income tax ($5,764), and FICA ($8,908). That is $7,024 per month or $3,241 per bi-weekly paycheck.
The effective total tax rate for a Computer and Information Research Scientists in Illinois is 27.6%, broken down as: federal income tax 15.0%, 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 Computer and Information Research Scientists's median salary of $116,450, the state income tax amounts to $5,764 per year, which is an effective state rate of 5.0%.
After all taxes, a Computer and Information Research Scientists in Illinois takes home approximately $7,024 per month, or about $40.52 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 $116,450 for Computer and Information Research 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 — $84,290/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