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How to become a licensed private investigator in Illinois. State license required. Experience: 3 years. Exam required. Total initial fees: $400. Verified 2026-03-22. Data verified 2026-03-22. Source: LicenseMap (getlicensemap.com).
Private Investigator
Governing Authority
Illinois Department of Financial and Professional Regulation (IDFPR)
Official website →Yes
License Required?
3 yrs
Experience (Years)
Yes
Exam Required?
$400
Total Initial Fees
$10,000
Bond Required?
Available
Armed Endorsement
Available License Categories
VerifiedIllinois requires state-level licensure for private investigators.
Private Investigator
Individual PI license
Required Experience
Verified3 years
Years of Experience
Details
3 yrs investigative exp AND 20 hrs PI training. Must first get PERC (Permanent Employee Registration Card).
Law Enforcement Equivalency
3 years law enforcement experience qualifies
Military Equivalency
Military investigative experience may qualify
Private investigator experience requirements often include work in law enforcement, military intelligence, legal investigations, or supervised work under a licensed PI.
Exam Requirements
VerifiedRequired
State Exam
70%
Passing Score
Exam Provider
IDFPR (state-administered)
Exam Topics
Retake Policy
May retake after 30 days
Minimum Age
21 years old
Background Check
VerifiedRequired
Criminal Check
Required
Fingerprinting
Required
Moral Character
Disqualifying Offenses
Surety Bond
VerifiedRequired
Bond
$10,000
Bond Amount
Insurance
VerifiedRequired
General Liability
$1,000,000
Not Required
Errors & Omissions
| Fee | Amount |
|---|---|
Application Fee | $175 |
Exam Fee | $50 |
License Fee | $175 |
Renewal Fee | $100 |
Total Initial Fees | $400 |
Renewal & CE Requirements
Verified3 years
Renewal Period
8 hrs
CE Hours Required
CE Topics
Renewal Fee
$100
Regulatory Board
Private investigator licenses must be renewed on schedule. Some states require continuing education covering legal updates, ethics, and investigative techniques.
Out-of-State Reciprocity
VerifiedDoes Not Accept Out-of-State Credentials
Transfer Details
Illinois does not have formal reciprocity
Additional Requirements for Transfer
Private investigator license reciprocity varies by state. Some states offer endorsement for experienced PIs, while others require passing the state exam regardless of prior credentials.
Firearm Carry Endorsement
VerifiedAvailable
Armed Endorsement
Required
Firearm Permit
20 hrs
Additional Training
Firearm Qualification
Must complete 20-hour firearms training course
Requalification Period
Annually
Armed endorsements typically require additional background checks, firearm training, and periodic requalification at an approved range.
Illinois requires a PERC (Permanent Employee Registration Card) before applying for a PI license, has a dual requirement of 3 years experience plus 20 hours PI training, $1,000,000 in liability insurance (one of the highest in the US), a 3-year renewal cycle, and annual CE (8 hrs/year).
Illinois has a 3-year license renewal cycle, longer than most states.
Illinois requires $1,000,000 in liability insurance, among the highest.
The IDFPR administers the exam.
There is no interstate compact for private investigators.
Must first get PERC (Permanent Employee Registration Card).
Dual exp + training requirement (3 yrs + 20 hrs).
Annual CE required (8 hrs/year).
Explore requirements for other professional licenses in Illinois.
How this state compares to 50 others for this profession
Timeline
#1 of 51
Salary
#3 of 51
Cost
#21 of 51
Processing
#1 of 51
Based on May 2024 Bureau of Labor Statistics OEWS data for Private Detectives and Investigators (SOC 33-9021)
Entry Level
$47,970
25th percentile
Median
$73,070
+40% vs. national avg ($52,370)Experienced
$85,570
75th percentile
Wage Distribution (Annual)
1,770 employed in this state
Source: BLS OEWS – Private Detectives and Investigators (May 2024)
National employment projections for 2024-2034
Projected Growth
+4.6%
Average GrowthNew Jobs
+1,700
over 10 years
Annual Openings
3,200
per year (avg.)
38,100 currently employed nationwide (2024)
Source: BLS Employment Projections 2024-2034 (September 2025)
Government fees and exam costs to obtain your initial license
Note: These are government licensing fees only. Education/training program costs (tuition, books, etc.) are not included as they vary widely by institution.
Estimated total: 162–174 weeks
Timeline estimated from licensing requirements on this page.
Source: Illinois Department of Financial and Professional Regulation (IDFPR) — Licensing Requirements
4–8 weeks
Estimated processing time
Source: Illinois Department of Financial and Professional Regulation (IDFPR) — Licensing Requirements
Study guides for the PI licensing exam.
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Accessed 2026-03-22
Accessed 2026-03-22
Illinois requires a state-level PI license. 3 years of experience are required. All licensing is managed through the Illinois Department of Financial and Professional Regulation (IDFPR).
Requirements vary by state and may change. Always verify current requirements with your state licensing authority.