Private Investigator Missouri License

To get a private investigator license in Missouri, apply to the Board of Private Investigator and Private Fire Investigator Examiners, submit fingerprints and two photos, show at least $250,000 liability insurance, pass the state PI exam (unless exempt), and pay the set fees. Licenses renew every two years. RSMo 324.1108; 20 CSR 2234-1.050; RSMo 324.1126; RSMo 324.1110. ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?section=324.1108))

Requirements last verified: 2026-07-28

Requirement	Details
Licensing agency	Board of Private Investigator and Private Fire Investigator Examiners (within Missouri’s Division of Professional Registration). RSMo 324.1100. ([revisor.mo.gov](https://www.revisor.mo.gov/main/OneSection.aspx?bid=50623§ion=324.1100&utm_source=openai))
Application form & submission	Apply on the board-prescribed form with verified information, two photos, fingerprints, experience statement, proof of insurance, and fee. RSMo 324.1108; rule procedures at 20 CSR 2234-2.010. ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?section=324.1108))
Fees (individual PI)	$500 application; $80 exam; fingerprint fee set by Missouri State Highway Patrol; $400 renewal; $100 late renewal; $100 inactive; $300 reactivation. Source: 20 CSR 2234-1.050 (Fees). ([sos.mo.gov](https://www.sos.mo.gov/cmsimages/adrules/csr/current/20csr/20c2234-1.pdf))
Insurance	Liability insurance of not less than $250,000 (and workers’ comp if required). Proof due with application. RSMo 324.1108(2). ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?section=324.1108))
Fingerprints/background	Two classifiable fingerprint sets processed by the Missouri State Highway Patrol; board background investigation is required. RSMo 324.1108(1)(5); RSMo 324.1110. ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?section=324.1108))
Exam	Written PI exam required unless exempt (see below). Up to four attempts allowed in 12 months; exam scheduled by the board. 20 CSR 2234-5.010; statute at RSMo 324.1110. ([sos.mo.gov](https://www.sos.mo.gov/cmsimages/adrules/csr/current/20csr/20c2234-5.pdf?utm_source=openai))
Exam content/time (board guidance)	100 questions: 50 on statutes, 25 on rules, 25 on general PI practice; 2-hour limit. Board’s exam page: pr.mo.gov/pi-exam-information.asp. ([pr.mo.gov](https://pr.mo.gov/pi-exam-information.asp?utm_source=openai))
Experience / exam exemptions	Exam waived if: (a) two years of lawful PI practice within past three years; (b) reciprocity eligible under §324.009; or (c) qualifying law enforcement under §324.1146. 20 CSR 2234-5.010(2). ([sos.mo.gov](https://www.sos.mo.gov/cmsimages/adrules/csr/current/20csr/20c2234-5.pdf?utm_source=openai))
Minimum age & eligibility	Agencies may only hire employees age 21+; all applicants must be U.S. citizens and meet board qualifications. RSMo 324.1116(1); RSMo 324.1108(2). ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?section=324.1116&utm_source=openai))
Continuing education	Licensed PIs: 16 CE hours every two years (even-year cycle Mar 1–Feb 28). Agency investigator employees: 8 CE hours every two years (even-year cycle May 1–Apr 30). 20 CSR 2234-6.010. ([sos.mo.gov](https://www.sos.mo.gov/cmsimages/adrules/csr/current/20csr/20c2234-6.pdf))
License term/renewal	License valid two years; renew in the manner of original license with renewal fee. RSMo 324.1126. ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?bid=50633§ion=324.1126&utm_source=openai))
Who must be licensed	Unlawful to engage in PI business without a state PI license; agencies must hold separate agency licenses to advertise or operate. RSMo 324.1104; RSMo 324.1114. ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?bid=17390§ion=324.1104&utm_source=openai))

How to get a private investigator license in Missouri (step-by-step)

1. Confirm you need an individual PI license and, if opening a firm, an agency license. Missouri requires licensure to conduct PI business statewide. RSMo 324.1104. ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?bid=17390§ion=324.1104&utm_source=openai))
2. Secure liability insurance. Obtain at least $250,000 in coverage (workers’ comp if applicable) and request a certificate naming the board as certificate holder. RSMo 324.1108(2). ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?section=324.1108))
3. Complete the board application. Include verified details, two photographs, a statement of experience, and required attachments. RSMo 324.1108(1); procedural rule at 20 CSR 2234-2.010. ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?section=324.1108))
4. Get fingerprinted. Submit two classifiable fingerprint sets processed via the Missouri State Highway Patrol. RSMo 324.1108(1)(5). ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?section=324.1108))
5. Pay required fees. For individuals: $500 application, $80 exam, plus MSHP fingerprint fee. Keep proof for your records. 20 CSR 2234-1.050. ([sos.mo.gov](https://www.sos.mo.gov/cmsimages/adrules/csr/current/20csr/20c2234-1.pdf))
6. Pass the Missouri PI exam (unless exempt). If you lack a qualifying waiver, you must sit for the written exam; up to four attempts are permitted in 12 months. 20 CSR 2234-5.010; exam overview at pr.mo.gov/pi-exam-information.asp. ([sos.mo.gov](https://www.sos.mo.gov/cmsimages/adrules/csr/current/20csr/20c2234-5.pdf?utm_source=openai))
7. Receive your license and maintain CE. Licenses are biennial; PIs must earn 16 CE hours each reporting cycle to renew. RSMo 324.1126; 20 CSR 2234-6.010. ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?bid=50633§ion=324.1126&utm_source=openai))

Missouri private investigator license: exam, exemptions, and CE

The board’s written exam assesses knowledge of Missouri PI statutes, rules, and general practice (100 questions; 2 hours). Applicants can be exempt from testing with two years of lawful practice in the past three, qualifying reciprocity, or certain law-enforcement status. CE for renewal: 16 hours biennially. Exam overview; 20 CSR 2234-5.010; 20 CSR 2234-6.010. ([pr.mo.gov](https://pr.mo.gov/pi-exam-information.asp?utm_source=openai))

Who needs a Missouri PI license and who can be hired as an investigator

Missouri makes it unlawful to operate a PI business without a state license; agencies must also hold agency licenses. Agencies may only hire investigator employees who are 21+ and meet board fingerprint/qualification rules; employees can begin work upon application and do not have to meet experience thresholds. RSMo 324.1104; RSMo 324.1116; RSMo 324.1114. ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?bid=17390§ion=324.1104&utm_source=openai))

Costs to get and keep a Missouri PI license

Budget for: $500 (application), $80 (exam), fingerprint fee (varies by MSHP), and $400 (biennial renewal). Late renewal adds $100; inactive/reactivation options are $100/$300 respectively. Agency licenses have their own fee schedule if you open a firm or additional branch. 20 CSR 2234-1.050. ([sos.mo.gov](https://www.sos.mo.gov/cmsimages/adrules/csr/current/20csr/20c2234-1.pdf))

Missouri PI license vs. security licensing and other states

If your work overlaps with guarding or patrol services, review Missouri’s distinct private security licensing landscape to avoid compliance gaps; see our Missouri private security license requirements guide for who needs which credential and when. For regional practice, compare our step-by-step guide on how to get a private investigator license in Kansas to plan for multi-state operations.

Related License Navigator guides: CT Private Investigator License: A Complete Guide · Private investigator Iowa: license, fees, steps (2026 update) · Private investigator Washington state: 2026 license guide

Frequently Asked Questions

How long does it take to get a Missouri PI license?

Timelines vary by background check and exam scheduling. You must submit the complete application with fingerprints, insurance, and fees; the board then schedules testing (if required) and conducts a background review. There’s no fixed statutory processing time. RSMo 324.1108; RSMo 324.1110. ([revisor.mo.gov](https://revisor.mo.gov/main/OneSection.aspx?section=324.1108))

Do I need an agency license to work solo?

You need an individual PI license to conduct investigations yourself. If you intend to advertise as an agency, employ investigators, or operate additional offices, you must also hold the separate agency license and comply with agency-fee/branch rules. RSMo 324.1114; 20 CSR 2234-1.050. ([revisor.mo.gov](https://www.revisor.mo.gov/main/OneSection.aspx?bid=49166§ion=324.1114&utm_source=openai))

What if I already have experience—can I skip the exam?

Yes, if you document two years of lawful PI practice within the last three years, qualify under reciprocity (§324.009), or meet the law-enforcement exemption in §324.1146. Otherwise, you must pass the exam. 20 CSR 2234-5.010. ([sos.mo.gov](https://www.sos.mo.gov/cmsimages/adrules/csr/current/20csr/20c2234-5.pdf?utm_source=openai))

How much continuing education do Missouri PIs need?

Licensed PIs must complete 16 hours of CE every two years (even-year reporting cycle). Licensed agency investigator employees must complete 8 hours every two years. 20 CSR 2234-6.010. ([sos.mo.gov](https://www.sos.mo.gov/cmsimages/adrules/csr/current/20csr/20c2234-6.pdf))

What’s covered on the Missouri PI exam?

The exam covers Missouri PI statutes, board rules, and general investigative practice—100 questions in total, administered in about two hours. Board exam information. ([pr.mo.gov](https://pr.mo.gov/pi-exam-information.asp?utm_source=openai))

Ready to move forward? License Navigator can help you map requirements, prep for the Missouri PI exam, and manage renewals alongside other states so you stay compliant and focus on your caseload.