How Much Do Detectives and Criminal Investigators Make in Illinois?
Median wage from BLS May 2025 — and the after-tax number the salary sites skip. Tax year 2026.
Quick answer
According to payandtaxes.com's analysis of BLS May 2025 data and 2026 tax law, the median Detectives and Criminal Investigators in Illinois earns $91,190 per year and takes home $68,613 ($5,718/month) — a keep-rate of 75.2%, with 3,270 employed in the state.
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| Gross pay | $7,599.17 |
| Federal income tax | $935.97 |
| Social Security | $471.15 |
| Medicare | $110.19 |
| Illinois state income tax | $364.09 |
| You keep | $5,717.76 |
How much do Detectives and Criminal Investigators make in Illinois?
The median Detectives and Criminal Investigators in Illinois earns $91,190 per year (BLS May 2025), about $43.84 per hour.
What is that after taxes?
$91,190 gross in Illinois keeps $68,613 after federal income tax ($11,232), FICA ($6,976) and state income tax ($4,369) — $5,718 per month, a 75.2% keep-rate.
How does Illinois compare to the national median for Detectives and Criminal Investigators?
The Illinois median is $2,600 below the national median of $93,790.
Which state pays Detectives and Criminal Investigators the most?
Washington DC has the highest median gross for Detectives and Criminal Investigators at $160,760 — but compare take-home, not gross: state taxes change the order.
Detectives and Criminal Investigators salary in every state · Illinois paycheck calculator · Illinois minimum wage