Illinois vs Michigan: Private Investigator License Requirements
Side-by-side comparison of PI licensing in Illinois and Michigan — license status, fees, experience requirements, exams, renewal periods, and reciprocity.
Illinois and Michigan do not have a formal reciprocity agreement — a licensee moving between them must meet the destination state's full requirements.
| Illinois | Michigan | |
|---|---|---|
| License required | State license | State license |
| License name | Illinois Private Detective License | Michigan Professional Investigator License |
| Regulator | Illinois Department of Financial and Professional Regulation (IDFPR) | Michigan Department of Licensing and Regulatory Affairs (LARA) |
| Estimated fees | ≈$500 application + exam fees | ≈$750 application + license |
| Experience / training | 3 years (of the last 5) in investigative work | 3 years of investigative experience, or a related degree + experience |
| Education substitute | Related degree can substitute for part of the experience | — |
| Exam required | Illinois Private Detective examination | No |
| Renewal period | 3 years | 2 years |
| Processing time | 60-120 days | 60-90 days |
| Reciprocity | No formal agreements | No formal agreements |
| Notes | — | — |
Requirements and fees are compiled from state regulator published information and are subject to change — always confirm with the state regulator via the links above. Last reviewed July 2026.
Is it harder to become a private investigator in Illinois or Michigan?
Illinois: state license required — 3 years (of the last 5) in investigative work, plus a licensing exam. Michigan: state license required — 3 years of investigative experience, or a related degree + experience, no exam.
How much does a PI license cost in Illinois vs Michigan?
Estimated fees are ≈$500 application + exam fees in Illinois versus ≈$750 application + license in Michigan. Fingerprinting, insurance, and bond costs may apply in addition.
Do Illinois and Michigan have PI license reciprocity?
Illinois and Michigan do not have a formal reciprocity agreement — a licensee moving between them must meet the destination state's full requirements.
Expanding into Illinois or Michigan?
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