MD-MP Exam Dates 2026: Testing Windows, Deadlines & Scheduling

How MD-MP Testing Windows Actually Work

Unlike some state trades exams that run on fixed quarterly dates, the Maryland Master Plumber License Exam (MD-MP) is delivered on a rolling basis through PSI Examination Services on behalf of the Maryland State Board of Plumbing. There isn't a single "2026 testing window" you circle on a calendar - instead, once your application is approved, you schedule a computer-based seat at a PSI test center around your own availability. That flexibility is useful, but it also means the real scheduling pressure points aren't exam dates; they're the deadlines built into eligibility, application, and retesting rules.

The exam itself is a fixed-format event once you're in the seat: 100 scored multiple-choice questions across 240 minutes, with a 70% passing score. PSI may slip in five to 10 unscored experimental questions to test future exam content, and time spent on those doesn't count against your four-hour allowance. That's a helpful detail for pacing - don't panic if the question count on screen feels slightly higher than 100; budget your time around the 100 scored items and let the extras be a non-factor.

Registration Mechanics and Fees

Since March 31, 2025, examination applications have been online-only - there is no paper application path left for candidates preparing for 2026 sittings. Build in time for document uploads: work records, identification, and your current approved 32-hour backflow prevention device testing certificate all need to be in order before PSI will approve you to schedule.

On the money side, the exam fee is $65 per attempt under the fee schedule effective July 1, 2025. That's separate from licensing costs - the initial master license and each renewal are $87.50. If you're mapping out a full budget rather than just the exam fee, the MD-MP Certification Cost 2026: Complete Pricing Breakdown guide breaks down how these numbers stack across a full licensing cycle.

• Exam fee: $65 per attempt
• Initial master license: $87.50
• License renewal: $87.50, each cycle
• Application format: online-only since March 31, 2025

Eligibility Timing Before You Apply

Scheduling an exam date only matters once you're actually eligible to sit for one. Standard eligibility for the Master Plumber/Gas Fitter exam requires holding a journeyman license for at least two years and logging 3,750 supervised training hours under a licensed master plumber. Those two clocks - license tenure and hours - often don't finish at the same time, so track both separately rather than assuming one implies the other.

If you're still confirming whether you meet these thresholds, or you're unsure how your training hours are counted toward the requirement, the detailed breakdown in MD-MP Requirements 2026: Eligibility, Prerequisites & How to Qualify is worth reading before you set a target exam date. Committing to a testing timeline before your eligibility documentation is airtight is one of the most common - and avoidable - scheduling mistakes candidates make.

Retest Scheduling Rules

If your first attempt doesn't clear the 70% threshold, Maryland's rule is straightforward: retesting is allowed no more often than every 30 days. That 30-day floor should shape how you plan your study calendar from the very start. Rather than treating exam day as a single all-or-nothing event, build your prep schedule so that even a non-pass outcome leaves you with a clear, short runway to a second attempt rather than an open-ended scramble.

For context on how outcomes actually break down at the state level, the board reported eight passes among 20 Master Plumber/Gas Fitter candidates for May 2026 - a 40% single-month pass rate. That figure describes one month's cohort, not a first-attempt rate or a running annual average, so don't extrapolate it into a personal probability. For a fuller discussion of what these numbers do and don't tell you, see MD-MP Pass Rate 2026: What the Data Shows.

Reference Materials and Code Editions

The MD-MP exam is open book, but with specific rules: permanent tabs, highlighting, and underlining in your approved references are allowed, while handwritten notes, additional papers, and outside study guides are prohibited. That distinction matters for how you prepare - your prep time should go toward knowing where information lives in the code books and how to navigate them quickly, not toward memorizing standalone notes you can't bring in.

The board-linked bulletin dated September 1, 2024 lists the 2018 IPC and 2018 IFGC among approved candidate-supplied references. However, June 2026 board minutes discuss 2024-code examination revisions, which means the reference edition tied to your specific booked exam could differ depending on when you sit. Before purchasing any code books, confirm directly with the current PSI candidate bulletin which edition applies to your scheduled date - buying the wrong year wastes money and study time.

Mapping Domains to Your Prep Calendar

Once your eligibility and application timing are locked in, the real scheduling question becomes: how do you allocate limited study weeks across ten content domains that carry very different weights? The official question allocations out of 100 are: Plumbing Fundamentals and Safety (5), Materials, Uses, and Specifications (6), Traps, Interceptors, and Backwater Valves (4), Plumbing Fixtures, Fixture Fittings, and Plumbing Appliances (4), Water Supply Systems (8), Backflow Prevention (10), Drain, Waste, and Vent Systems (13), Special Topics (3), Gas Appliances and Piping (40), and Plumbing Mathematics (7).

Gas Appliances and Piping alone accounts for 40 of the 100 scored questions - by far the largest single domain. A study calendar that treats all ten domains equally is structurally mismatched with the exam. For a full walk-through of what each domain actually tests, see MD-MP Exam Domains 2026: Complete Guide to All 10 Content Areas.

If you want a condensed reference for final review days, the MD-MP Cheat Sheet 2026: One-Page Review of Must-Know Facts distills the highest-yield points across all ten domains. And if you're still deciding how deep to go in each area, MD-MP Study Guide 2026: How to Pass on Your First Attempt lays out a fuller preparation framework built around this same domain structure.

After You Pass: Licensing Deadlines

Passing the exam starts a new clock rather than ending the process. You must apply for the license within one year of passing - miss that window and your passing score stops carrying you toward licensure. Once issued, the license runs two years from issuance, and general plumbing-license renewal has no continuing-education requirement, which simplifies your ongoing compliance calendar compared to trades that mandate annual CE hours.

If you're weighing whether the time and cost commitment is worth it relative to the career upside, Is the MD-MP Certification Worth It? Complete ROI Analysis 2026 and MD-MP Salary Guide 2026: Complete Earnings Analysis both dig into that question in more depth. For employers and hiring context once you're licensed, MD-MP Jobs covers where master-level license holders typically find work.

Insurance and Service-Area Quirks

Scheduling your exam and licensing timeline is only part of becoming operational as a master plumber in Maryland. To reach insured-to-contract status, you need at least $300,000 in general liability coverage and $100,000 in property-damage coverage per occurrence. Line up quotes for this coverage well before your license issues, since carriers may need lead time to bind a policy that meets these minimums.

It's also worth noting that Baltimore County and the WSSC service area maintain separate licensing authorities from the state board. If your work will touch either jurisdiction, check their specific requirements early - don't assume your state-level MD-MP license alone clears you to contract everywhere in the region without additional local registration.

For readers newer to the credential itself - what it covers, who administers it, and how it differs from journeyman-level licensing - the primer at What Is MD-MP? and the overview at MD-MP Certification are good starting points. You can also run timed, domain-weighted practice questions modeled on the real 240-minute format at the MD-MP practice test hub to get a feel for pacing before you book your actual PSI seat.

Frequently Asked Questions