How to Get a Private Investigator License in Illinois
Last updated: March 2, 2026
Illinois is a diverse market anchored by Chicago, one of the largest metropolitan areas in the US, making it an excellent place to start a career as a private investigator. Licensing in Illinois is overseen by the Illinois Department of Financial and Professional Regulation (IDFPR). The process requires 0 hours of pre-license education and costs between $2,000 and $3,000 in total. You'll need to pass the Illinois PI Licensing Exam (administered by Illinois Department of Financial and Professional Regulation (IDFPR)) with a score of at least 70%.
Illinois requires just 0 hours of pre-license education — one of the lowest requirements in the nation. Budget between $2,000 and $3,000 for the total licensing process, including education, application, and exam fees. Most aspiring private investigators complete the entire process in 4-8 weeks, depending on how quickly they move through the coursework and exam preparation.
Illinois Private Investigator License Requirements
| Requirement | Details |
|---|---|
| Minimum Age | 21 years old |
| Pre-License Education | 0 hours |
| Degree Required | No |
| Exam Required | Yes — Illinois PI Licensing Exam |
| Passing Score | 70% |
| Background Check | Yes |
| Broker Sponsorship | Not required |
| Application Fee | $300 |
| Exam Fee | $50 |
| Governing Body | Illinois Department of Financial and Professional Regulation (IDFPR) |
| License Reciprocity | Partial |
Reciprocity:
Steps to Get Your Private Investigator License in Illinois
- 1
Meet Experience and Education Requirements
Many states require prior experience in law enforcement, military, or investigative work.
Time: Varies (1-3 years experience typical) Cost: $350 - 2
Submit Your PI License Application
Apply through the Illinois Department of Financial and Professional Regulation (IDFPR). You'll need proof of experience, fingerprints for a background check, and the application fee of $300.
Time: 4-8 weeks for processing Cost: $300 - 3
Pass the Illinois PI Licensing Exam
Schedule and pass the PI licensing exam administered by Illinois Department of Financial and Professional Regulation (IDFPR). The exam fee is $50.
Time: 2-6 weeks Cost: $50 - 4
Obtain Required Insurance and Bonding
Most states require general liability insurance and/or a surety bond for private investigators. Shop multiple providers for the best rates.
Time: 1-2 weeks Cost: $500 - 5
Receive Your PI License
Once approved, the Illinois Department of Financial and Professional Regulation (IDFPR) will issue your private investigator license. You can then legally conduct investigations in Illinois.
Time: 1-4 weeks
Key Things to Know
- Education requirement: . Many providers offer online options, giving you flexibility to study on your own schedule.
- The licensing exam: The Illinois PI Licensing Exam is administered by Illinois Department of Financial and Professional Regulation (IDFPR). You'll need to score at least 70% to pass. Study materials and practice exams are available from most education providers.
- Background check required: Illinois requires a criminal background check as part of the application process. Plan for additional processing time and fees.
- Online application available: Illinois accepts online applications, which can speed up processing time.
- Ongoing requirements: Once licensed, you'll need 0 hours of continuing education every 3 years. .
How Illinois Compares
Illinois requires 0 hours of pre-license education for private investigators. The average total cost in Illinois is around $2,500, compared to the national average of $1,810. Illinois's 3-year renewal cycle is longer than the national average of 1.8 years.
How Much Does a Private Investigator License Cost in Illinois?
| Cost Item | Estimated Range |
|---|---|
| Pre-License Education | $300 - $700 |
| Application Fee | $300 |
| Exam Fee | $50 |
| Total Estimated Cost | $2,000 - $3,000 |
License Renewal
- Renewal Period: Every 3 years
- Continuing Education: 0 hours
- CE Details:
- Renewal Fee: $300
Tips for Success
- Choose your education provider carefully: Compare prices, format (online vs. in-person), and reviews. Some providers offer exam prep materials bundled with the course, which can save you money. Check the Illinois Department of Financial and Professional Regulation (IDFPR) website for a list of approved providers.
- Don't rush the exam: With only 0 hours required, you can complete the education portion quickly — some providers offer accelerated programs that finish in 2-3 weeks. Use practice exams to identify weak areas before scheduling your test date.
- Build on existing experience: Most states require 1-3 years of investigative, law enforcement, or military experience. If you're starting from scratch, consider working for an established PI firm first to gain supervised hours.
- Specialize in a niche for higher rates: Insurance fraud, corporate investigations, digital forensics, and skip tracing are high-demand specialties. Specialized PIs charge $75-$150/hour vs. $40-$60 for general surveillance work.
- Budget approximately $3,000 for your Illinois license: This includes $300 in application fees, $50 for the exam, and education costs. Once licensed, plan for $300 in renewal fees every 3 years.
Frequently Asked Questions
How long does it take to get a private investigator license in Illinois?
Most people complete the process in 2-4 weeks total. The pre-license education (0 hours) takes the longest. After completing education, the exam and application process typically adds 2-6 weeks.
How much does it cost to get a private investigator license in Illinois?
The total cost ranges from $2,000 to $3,000, including pre-license education, the application fee ($300), and the exam fee ($50).
Can I get a Illinois private investigator license with a criminal record?
The Illinois Department of Financial and Professional Regulation (IDFPR) evaluates criminal history on a case-by-case basis. Having a criminal record does not automatically disqualify you, but certain offenses may affect your eligibility. Contact the Illinois Department of Financial and Professional Regulation (IDFPR) for guidance before applying.
Do I need a college degree to become a private investigator in Illinois?
No. Illinois does not require a college degree. You only need to complete the 0 hours of approved pre-license courses.
Can I take the pre-license courses online in Illinois?
Many approved education providers offer pre-license courses online, allowing you to study at your own pace. Check the Illinois Department of Financial and Professional Regulation (IDFPR) website for a list of approved providers.
Sources
- Official website: Illinois Department of Financial and Professional Regulation (IDFPR)