MI-JP Cheat Sheet 2026: One-Page Review of Must-Know Facts

Exam Snapshot: The Numbers You Need Memorized

If you only have five minutes before test day, this is the section to reread. Every number below comes straight from the PSI candidate bulletin and LARA's published licensing pages, and they're the numbers most candidates get wrong when they rely on memory alone.

• Format: 125 questions, computer-based, administered at a PSI test center (no remote proctoring for this exam).
• Time limit: 180 minutes.
• Passing score: 75% minimum - see the MI-JP Passing Score 2026 guide for how that translates into a raw question count.
• Book status: Open-book, but only from approved references.
• PSI fee: $100 per attempt.
• LARA application fee: $40 for the initial license.
• Bulletin effective date: April 29, 2026.

Notice there are two separate exams: the PSI written exam described throughout this cheat sheet, and a separate BCC hands-on practical exam. They are graded, scheduled, and administered differently, and confusing the two is one of the most common planning mistakes candidates make. For a deeper cost breakdown across both exams and the licensing application, see MI-JP Certification Cost 2026.

The Three Domains, Fast

The Michigan Journey Plumber written exam is organized around three broad content areas. Understanding what each one actually tests - not just its title - is the difference between generic studying and targeted studying. For the full breakdown with sub-topics and weighting discussion, read MI-JP Exam Domains 2026: Complete Guide to All 3 Content Areas.

Beyond these three domain labels, the bulletin's detailed coverage explicitly calls out drainage systems, vent systems, fixtures, water distribution, backflow prevention, special waste systems, testing, inspections, and isometric drawing interpretation. Treat these as your real study checklist - they're where domain-level generalities become specific, testable questions. If you're still deciding how much of your prep time each domain deserves, MI-JP Study Guide 2026: How to Pass on Your First Attempt walks through sequencing in more depth.

Approved References and Code-Book Rules

Because this is an open-book exam, what you bring into the test center matters as much as what you've memorized. PSI and LARA are specific about this, and violations can cost you the attempt.

• Approved references: the 2021 Michigan Plumbing Code, the State Construction Code Act (1972 PA 230), and the Skilled Trades Regulation Act (2016 PA 407).
• Tabs: Chapter tabs on your code book are allowed.
• Markings: Highlighting, underlining, handwritten notes, and any other markings inside the code book are prohibited.
• Statutory printouts: If you print statutory references from the BCC website, each one must be a separate document, bound with three staples along the left edge, with no markings or tabs.
• No loose papers: No additional loose or attached papers of any kind are permitted at your workstation.

Get familiar with your code book's table of contents and index before test day so you're navigating by structure, not by memory of where a highlighted passage used to be. This single habit - practicing "clean-book navigation" - is one of the most overlooked prep tasks, and it belongs in your final-week routine, not something you figure out for the first time in the testing room.

Eligibility and Application Mechanics

You can't schedule the PSI exam on your own timeline - LARA approval comes first, and the eligibility bar is substantial. For the full requirements breakdown, see MI-JP Requirements 2026: Eligibility, Prerequisites & How to Qualify.

• Minimum age: 18 years old.
• Experience requirement: at least 6,000 hours over at least three years as an actively registered plumbing apprentice, working under a licensed master or journey plumber.
• Documentation: notarized employer experience statements verifying those hours.
• Approval sequence: LARA must approve your application before PSI will let you schedule.

This isn't a credential you can shortcut with a study guide alone - the apprenticeship hours and notarized statements are non-negotiable gatekeepers. If you're weighing whether the time and cost investment is worthwhile relative to your career plans, Is the MI-JP Certification Worth It? Complete ROI Analysis 2026 and MI-JP Salary Guide 2026: Complete Earnings Analysis are useful companion reads before you commit to the application paperwork.

Exam-Day Logistics

A few operational details trip up otherwise well-prepared candidates:

• Journey Plumber candidates test in person at a PSI test center - there is no remote-proctoring option for this exam.
• The published practical exam session runs from 10:00 a.m. to 12:30 p.m., and scheduling requests must meet a 30-day cutoff.
• Both the written and practical exams must be passed within the same one-year application period. A passing score on one does not carry over into a new application if your window lapses.
• If you don't pass the written exam, PSI allows repeat attempts, but each retake requires a new $100 exam fee, and it still has to happen within your active application window.

Because the one-year window covers both exams, poor scheduling - not lack of knowledge - is a common reason candidates have to restart the whole application. Build in buffer time rather than booking your written exam and practical exam back-to-back against the deadline. For a full calendar view of these windows, see MI-JP Exam Dates 2026: Testing Windows, Deadlines & Scheduling.

Licensing, Renewal, and Code Updates

Passing the exam is the milestone everyone focuses on, but the licensing details afterward matter for long-term compliance:

• Renewal: Journey Plumber licenses renew annually by April 30, with a $40 renewal fee.
• Code-update course: A board-approved code-update course is required within one year after a new plumbing code is adopted - not on a fixed annual schedule, but tied to when the code itself changes.

Keep this distinction straight: renewal is a yearly calendar obligation, while the code-update course requirement is triggered by code adoption events, which don't happen every year. Mixing these up is a common source of confusion once you're licensed and juggling continuing requirements alongside actual plumbing work.

A Fast Final-Review Sequence

If you're within a few weeks of test day and need a tight review sequence rather than a full study plan, structure it around the domains rather than generic review blocks. This sequencing logic - not the technique itself - is what makes it MI-JP-specific; for a longer-range plan built from day one, see MI-JP Study Guide 2026.

Full-length, timed practice runs matter more than passive rereading at this stage. Running realistic question sets at the MI-JP practice test platform under actual time constraints exposes pacing problems before they cost you on exam day, and it's a faster diagnostic than reviewing the code book alone. If you want a data-informed sense of how candidates typically perform, MI-JP Pass Rate 2026: What the Data Shows is a useful reference, and How Hard Is the MI-JP Exam? Complete Difficulty Guide 2026 breaks down where most difficulty actually comes from.