- You must score at least 70 percent on each part of the MT-PI, not just an overall average.
- The exam draws from three sources: MCA Title 37 Chapter 1, MCA Title 37 Chapter 60, and ARM Title 24 Chapter 182.
- There is no time limit, but no electronic devices, books, notebooks, or papers are allowed.
- Failed sections can be retaken, but each retake requires paying another examination fee.
The Real Passing Score Number
If you search "MT-PI passing score," you want one number - and here it is: 70 percent on each part of the Montana Private Investigator License Exam. That's not a single blended score averaged across the whole test. The Montana Department of Labor and Industry's Private Security Program requires you to clear the 70 percent threshold on every part separately. Scoring 95 percent on one section does not offset a 60 percent on another. Each part stands or falls on its own.
This structure matters more than most candidates realize when they first start studying. A lopsided prep plan - one where you memorize licensing and permit rules cold but barely skim the administrative rules - can leave you failing a single part even though your overall command of the material feels strong. For a full breakdown of what's tested where, see the MT-PI Exam Domains 2026: Complete Guide to All 3 Content Areas.
Why Each Part Has Its Own 70 Percent Line
The Private Security Program structures the written exam this way because the three underlying law sources cover genuinely different regulatory territory. Title 37, Chapter 1 sets the general framework for occupational and professional licensing boards in Montana. Title 37, Chapter 60 is the specific statute governing private investigators, private security and fire entities, and process servers. Title 24, Chapter 182 of the Administrative Rules of Montana fills in the operational detail the statutes leave to the Board of Private Security.
Testing each source as its own scored part forces candidates to actually understand licensing procedure, investigator-specific statute, and administrative rule enforcement independently rather than leaning on strength in one area to paper over a gap in another. If you're wondering how this compares in difficulty to other credentialing exams you may have encountered, the How Hard Is the MT-PI Exam? Complete Difficulty Guide 2026 article walks through what actually makes this one demanding.
Key Takeaway
Treat each of the three law sources as its own mini-exam requiring its own 70 percent. Don't let confidence in one area mask a weak spot in another.
How the Three Law Sources Map to Your Score
Because the passing score applies per part, understanding exactly what falls under each domain is the single highest-leverage thing you can do before test day. Here's what each part actually covers.
Domain 1: Montana Code Annotated, Title 37, Chapter 1
This is the general licensing framework applied across Montana's occupational and professional boards. Candidates need to understand how licensing authority, general board procedure, and disciplinary structure work at this foundational level before layering on investigator-specific rules.
- General definitions and licensing authority language
- How this chapter interacts with board-specific statutes like Chapter 60
- Baseline procedural concepts referenced elsewhere in the exam
Domain 2: Montana Code Annotated, Title 37, Chapter 60 - Private Investigators, Private Security and Fire Entities, and Process Servers
This is the core investigator statute and, for most candidates, the densest of the three parts. It defines who must be licensed, what qualifies as private investigative work, and how the licensing categories (including process servers and security/fire entities) relate to one another.
- Licensing categories and who falls under each
- Statutory definitions specific to investigative and security work
- Provisions tied to permits, endorsements, and enforcement
Domain 3: Administrative Rules of Montana, Title 24, Chapter 182 - Board of Private Security
This part covers the operational rules the Board of Private Security has adopted to implement the statutes above. It's where the fine-grained procedural detail lives - the kind of rule that statute alone doesn't spell out.
- Board-adopted procedures for applications, renewals, and standards
- Rule-level detail supporting the firearms, insurance, and permit requirements
- How administrative rule provisions get enforced against license holders
For a more granular walkthrough of study priorities within each of these, the MT-PI Study Guide 2026: How to Pass on Your First Attempt is worth reading alongside this one.
Question Format and No Time Limit
The MT-PI written exam is closed-resource: no electronic devices, books, notebooks, or papers are permitted during testing. Everything you need to answer a question has to already be in your head - there's no fallback reference sheet or open-book lookup during the actual session.
The exam has no time limit. That's a meaningful advantage compared to many licensing tests, and it should change how you approach pacing. Since speed isn't scored, there's no benefit to rushing through Domain 2 to "save time" for the administrative rules section. Read every question carefully, and if you're unsure, work through the statutory logic rather than guessing quickly.
Retakes, Fees, and What a Failed Section Costs You
If you fail a part, you don't have to retake the entire exam from scratch - but you do have to retake that failed section, and doing so requires paying another examination fee. This is a meaningful reason to take the 70-percent-per-part rule seriously from the start rather than treating it as a minor technicality.
Here's a quick view of the core cost mechanics tied to the exam and licensing process:
| Item | Cost / Detail |
|---|---|
| Application fee | $80 |
| Optional armed endorsement | $50 |
| Examination / proctor charge | Separate fee, may apply depending on arrangement |
| Failed section retake | Requires another examination fee |
| Annual license renewal window | January 1 - March 1, $160 |
| Late renewal fee | $80 |
For the full cost picture including insurance and permit considerations, see the MT-PI Certification Cost 2026: Complete Pricing Breakdown guide. And if you're still assembling your eligibility file before you even sit the exam, check the MT-PI Requirements 2026: Eligibility, Prerequisites & How to Qualify article for the fingerprinting, experience-hours, and insurance details that must be in order first.
A Domain-Ordered Prep Timeline
Because the passing bar is per-part rather than overall, your prep schedule should be built around giving each of the three law sources dedicated, uninterrupted attention - not blended review sessions that mix all three together too early.
Domain 1 Foundation
- Read through Title 37, Chapter 1 in full, noting general licensing definitions
- Build a simple outline of board authority and procedural language
- Take an initial round of practice questions focused only on this part
Domain 2 Deep Work
- Work section by section through Title 37, Chapter 60, since it's typically the densest part
- Separate out licensing categories: investigators, security/fire entities, process servers
- Cross-reference armed endorsement and permit provisions with your own application plans
Domain 3 and Rule Detail
- Work through Administrative Rules of Montana, Title 24, Chapter 182
- Focus on procedural rule detail the statutes reference but don't fully spell out
- Note where Chapter 182 rules connect back to Chapter 60 licensing categories
Full-Scope Review
- Run mixed practice sessions across all three parts
- Track your score per part, not just overall, to mirror the actual 70 percent per-part rule
- Revisit any part sitting below 70 percent before scheduling your exam
This kind of structured, spaced approach - reviewing weak areas again before the exam rather than only once - works well specifically because the exam scores each domain independently. If you want a condensed reference to keep nearby during final review, the MT-PI Cheat Sheet 2026: One-Page Review of Must-Know Facts is built for exactly that last-week pass.
Common Reasons Candidates Miss 70 Percent
A few patterns show up repeatedly among candidates who fall short of the passing score on a given part:
- Treating Chapter 60 and Chapter 182 as interchangeable. Statute and administrative rule cover overlapping ground but are tested as separate parts - confusing where a provision lives can cost you on both.
- Skipping Title 37, Chapter 1 because it feels "generic." It's foundational, and it's still a scored part with its own 70 percent bar.
- Assuming open-book habits will transfer. Since no books, notebooks, papers, or electronic devices are allowed during the exam, any study method that relies on flipping through a reference mid-question won't help you here - you need retained knowledge.
- Under-preparing for the armed endorsement provisions if you're applying for one, since firearms training and annual requalification requirements are woven into the statute and rule content.
If you want a data-informed view of how candidates generally perform, the MT-PI Pass Rate 2026: What the Data Shows article discusses this in more depth. And once you're licensed, it's worth thinking ahead - the MT-PI Jobs and MT-PI Salary Guide 2026: Complete Earnings Analysis pages cover what comes after you clear the passing score.
Key Takeaway
Most missed passes trace back to uneven study across the three parts, not overall lack of preparation. Score yourself per part in practice, exactly as the real exam scores you.
Frequently Asked Questions
It's per part. You need at least 70 percent on each part of the exam individually - a strong score on one part does not compensate for a weak score on another.
You retake only the failed part, but you'll need to pay another examination fee to do so. There's no penalty tied to parts you already passed.
No. The exam has no time limit, though it is closed-resource - no electronic devices, books, notebooks, or papers are allowed during testing.
Questions are drawn from three sources: Montana Code Annotated Title 37, Chapter 1; Montana Code Annotated Title 37, Chapter 60; and Administrative Rules of Montana Title 24, Chapter 182.
The Private Security Program administers the written exam after your application is approved, ordinarily through a local Job Service office. Out-of-state applicants arrange an acceptable proctor and notify the Department directly.
For a broader introduction before diving into passing-score specifics, start with What Is MT-PI? or the MT-PI Certification overview, then return to practice scoring each part separately on our practice test site until every section holds steady at or above 70 percent.