Illinois Private Investigator License Requirements

To practice as a private investigator in Illinois, the state licensing board requires 5,517 documented education or training hours, a passing score on the State Private Investigator Exam examination, and 3 years of supervised work experience. A criminal history background check is also part of the application. Applicants must be at least 18 years old. The regulation sits under Illinois's professional licensing framework, which classifies training as "Training or Experience".

Upfront cost is $372, with renewal running $326 on a 2-year cycle. Continuing education is not a listed requirement for this profession in this state, so the annualized maintenance burden is lower than in states that mandate ongoing hours.

Reciprocity is available: Not typically reciprocal — state-specific. Compared to the profession-wide pattern, the numbers above should be cross-checked against other states before relocating — licensing cost, training hours, and exam requirements vary enough that a different state may cut thousands of dollars and months of training from the path. The state board, not this page, is the final authority; verify every field below with the official regulator before you pay fees or enroll in training.