What Is A REG?

What Is A REG? The Basic Definition

REG stands for Taxation and Regulation, one of the four required sections of the Uniform CPA Examination. It is not a separate license, badge, or renewable credential - it's a single exam section that candidates for CPA licensure must pass alongside the other three sections. When people ask "what is a REG," they're usually asking about this specific exam: its content, format, and what it takes to clear it.

REG sits at the intersection of federal tax law and business law. Candidates are tested on individual and entity taxation, property transactions, professional ethics and tax procedure, and core business law concepts. If you want the full breakdown of what each domain covers, the REG Exam Domains 2026: Complete Guide to All 5 Content Areas goes deeper than what fits here.

Who Develops and Administers REG

Three different organizations share responsibility for getting you through REG:

• AICPA Board of Examiners - writes the exam content and handles scoring.
• NASBA and individual state boards of accountancy - manage candidate eligibility, applications, and licensure requirements. These rules vary by jurisdiction.
• Prometric - the testing vendor that delivers the exam at computer-based testing centers.

Because eligibility rules, credit windows, and CPE requirements differ by state board, it's worth reading a jurisdiction-specific breakdown before you apply. See REG Requirements 2026: Eligibility, Prerequisites & How to Qualify for how that process typically works.

Exam Structure: Testlets, Question Types, and Timing

Under the blueprint effective January 1, 2026, REG is delivered in a four-hour appointment split into five testlets. The exam contains:

• 72 multiple-choice questions (MCQs)
• 8 task-based simulations (TBSs)

MCQs and TBSs each contribute 50% of your overall score, so neither format can be treated as an afterthought. TBSs typically require you to work through more realistic, multi-part scenarios - think research problems, calculations, and document review - rather than picking a single answer from a list.

A standardized 15-minute break falls after Testlet 3. It's a stopped-clock break, meaning it does not count against your four hours of testing time. During the exam, you have access to a spreadsheet tool and a four-function calculator to help with computations - useful given how math-heavy some entity and property transaction questions can get.

The Five REG Content Domains

REG's blueprint organizes content into five domains, each with a designated weighting range. Understanding these weights should directly shape how you allocate study hours.

Notably, candidates are not tested on specific tax rate percentages, dollar amounts, or inflation-indexed limitations. The exam focuses on rules, mechanics, and application rather than memorized numeric thresholds - which changes how you should study compared to memorizing a rate table.

For a full walk-through of how these five domains interact and where candidates commonly lose points, see REG Exam Domains 2026: Complete Guide to All 5 Content Areas.

How REG Is Scored

REG scores land on a 0-99 scale, and a passing score is 75. That number is frequently misunderstood - it is not the percentage of questions you answered correctly. It's a scaled score reflecting difficulty-weighted performance across MCQs and TBSs, and scores are not curved against other candidates in your testing window.

The cumulative pass rate for REG across Q1-Q2 2026 was 66.78%, based on published testing data. That figure gives you a rough sense of how the section performs across the broader candidate pool, though your own outcome depends heavily on preparation quality and domain coverage. For more context on what that number means and how it's trended, read REG Pass Rate 2026: What the Data Shows.

If you want a deeper explanation of the scoring mechanics - including how MCQ and TBS performance combine - check out REG Passing Score 2026: Exactly What You Need to Pass.

Registration, Eligibility, and Fees

Before you can sit for REG, you need approval from your state board of accountancy and a Notice to Schedule (NTS). Eligibility requirements - including education credit hours, application windows, and CPE rules - are set at the jurisdiction level, so the exact process varies depending on where you're applying.

On the fee side, NASBA CPA Examination Services jurisdictions list a $268.59 exam-section fee for REG. That figure is separate from application or board fees, which are set independently by each jurisdiction and can add meaningfully to your total cost. For a full cost breakdown across scenarios, see REG Certification Cost 2026: Complete Pricing Breakdown.

Once you have your NTS, you'll schedule your appointment through Prometric. Testing windows, blackout dates, and rescheduling deadlines are covered in detail in REG Exam Dates 2026: Testing Windows, Deadlines & Scheduling.

Who Actually Needs to Pass REG

REG is required for anyone pursuing CPA licensure in the United States, regardless of which industry they eventually work in. That said, the content skews heavily toward roles involving tax work, so REG tends to matter most for:

• Public accounting associates in tax practice groups
• Corporate tax analysts and tax accountants
• Entity-focused tax preparers handling partnerships and corporations
• Compliance and business-law-adjacent accounting roles

Because REG covers both tax and business law, passing it signals competency that extends beyond pure tax preparation - it also demonstrates familiarity with contracts, agency, and business structures relevant to advisory work. If you're weighing how this translates into career outcomes, REG Salary Guide 2026: Complete Earnings Analysis and REG Jobs cover how the section connects to hiring and compensation conversations, while Is the REG Certification Worth It? Complete ROI Analysis 2026 looks at the broader return-on-effort question.

Building a Domain-Based Study Approach

Rather than studying REG chronologically through a textbook, it's more efficient to sequence your prep around domain weighting. Since Federal Taxation of Entities (23-33%) and Federal Taxation of Individuals (22-32%) together make up roughly half the exam, they deserve the earliest and heaviest attention.

Regardless of how you structure your calendar, repeated exposure to realistic question formats matters more than passive review. Running timed sets on our REG practice test platform lets you rehearse both MCQ and TBS formats under conditions that mirror the real four-hour appointment. For a more detailed week-by-week plan, see REG Study Guide 2026: How to Pass on Your First Attempt, and if you're trying to gauge how tough this section really is relative to your background, How Hard Is the REG Exam? Complete Difficulty Guide 2026 breaks that down further.

Whatever your starting point, running realistic practice questions on REG Exam Prep's practice platform throughout your study window - not just at the end - helps surface weak domains early enough to actually fix them before test day.

Frequently Asked Questions