Last updated: 2025 BLS data · Page refreshed:
How much does a Information Security Analysts actually take home in Illinois?
5.0% flat rate — 28.2% effective total tax rateData: BLS OEWS 2025 + IRS/State Tax Brackets 2024 • Updated 2026-05-19
Detailed line-by-line tax calculation for a Information Security Analysts earning $124,180 in Illinois (single filer, standard deduction).
| Tax Component | Annual Amount | Effective Rate |
|---|---|---|
| Gross Salary (Median) | $124,180 | — |
| Federal Income Tax | -$19,341 | 15.6% |
| Illinois State Income Tax | -$6,146 | 4.9% |
| Social Security (OASDI) | -$7,699 | 6.2% |
| Medicare | -$1,800 | 1.4% |
| Total Taxes | -$34,988 | 28.2% |
| Take-Home Pay | $89,191 | 71.8% |
Take-home pay varies significantly across experience levels. Here is the after-tax breakdown for each salary percentile of Information Security Analysts in Illinois.
| Percentile | Gross Salary | Total Taxes | Take-Home Pay | Tax Rate |
|---|---|---|---|---|
| 10th Percentile (P10) | $78,760 | -$19,091 | $59,668 | 24.2% |
| 25th Percentile (P25) | $98,910 | -$26,063 | $72,846 | 26.4% |
| Median (P50) | $124,180 | -$34,988 | $89,191 | 28.2% |
| 75th Percentile (P75) | $154,890 | -$46,228 | $108,661 | 29.8% |
| 90th Percentile (P90) | $172,830 | -$52,532 | $120,297 | 30.4% |
After federal income tax ($19,341), state tax ($6,146), and FICA ($9,499), a Information Security Analysts in Illinois takes home $89,191 per year — or $7,432 per month. The effective tax rate of 28.2% is moderate compared to the national range.
A Information Security Analysts in Illinois loses 28.2% of gross pay to taxes — higher than the ~25% national midpoint. Of the $124,180 gross, $89,192 lands in the paycheck after federal ($19,342), state ($6,147), and FICA ($9,500) withholding.
Illinois applies a flat state income tax — every dollar of wage income is taxed at the same rate. For this Information Security Analysts salary that contributes $6,147 to the 4.9% effective state-tax burden.
Federal income tax ($19,342) accounts for 55% of the total tax bill — the single largest deduction. FICA adds $9,500 (27%), and state tax the remaining $6,147 (18%).
The state-tax gap is substantial: a Information Security Analysts earning this gross in a no-income-tax state would net about $95,339 — an extra $6,147 (6.9%) annually compared with Illinois.
Illinois ranks #22 of 48 states for Information Security Analysts after-tax pay — comfortably in the upper half.
Translated into paycheck cadences, $89,192 net/year works out to $7,433/month or $3,430/bi-weekly for this Information Security Analysts in Illinois — the numbers that actually hit a checking account after every deduction.
Where does a Information Security Analysts keep the most of their paycheck? Top 10 states ranked by after-tax take-home pay.
Illinois ranks #22 out of 48 states for Information Security Analysts after-tax take-home pay.
A Information Security Analysts in Illinois earning a median salary of $124,180 will take home approximately $89,191 per year after federal income tax ($19,341), state income tax ($6,146), and FICA ($9,499). That is $7,432 per month or $3,430 per bi-weekly paycheck.
The effective total tax rate for a Information Security Analysts in Illinois is 28.2%, broken down as: federal income tax 15.6%, 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 Information Security Analysts's median salary of $124,180, the state income tax amounts to $6,146 per year, which is an effective state rate of 4.9%.
After all taxes, a Information Security Analysts in Illinois takes home approximately $7,432 per month, or about $42.88 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 $124,180 for Information Security Analysts 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 — $89,191/yr — does not include local taxes, pre-tax deductions (401k, HSA), or tax credits.
Some links are affiliate links. See our disclosure.
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