What Is REG?

What Is REG, Exactly?

REG stands for the Uniform CPA Examination: Taxation and Regulation. It is one of the four sections a candidate must pass to become a licensed Certified Public Accountant in the United States, alongside Auditing and Attestation, Financial Accounting and Reporting, and a Discipline section. REG is the section built around federal taxation, business law, and the regulatory and ethical obligations that govern tax practice.

Unlike a standalone certification you renew every few years, REG is an exam section rather than a separately renewable credential. Once you pass it, you don't retest it periodically - it's a permanent building block toward CPA licensure, contingent on completing the other required sections within your jurisdiction's rolling credit window. If you're still mapping out what this section covers domain by domain, the REG Exam Domains 2026: Complete Guide to All 5 Content Areas breaks each area down in depth.

Who Develops, Scores, and Delivers REG

Three organizations divide responsibility for REG, and understanding the split helps you know who to contact for what:

• AICPA Board of Examiners - writes the questions, sets the blueprint, and scores every attempt.
• NASBA and individual state boards of accountancy - handle candidate administration: applications, eligibility determinations, and issuing your Notice to Schedule (NTS).
• Prometric - operates the physical (or remote-proctored) testing centers where the computer-based exam is actually delivered.

Because eligibility rules, credit windows, and CPE requirements are set at the state level, two candidates studying the identical content can face different deadlines and paperwork depending on where they're licensed. A full walkthrough of these mechanics lives in the REG Requirements 2026: Eligibility, Prerequisites & How to Qualify guide.

Exam Format: Testlets, Question Types, and Timing

Under the blueprint effective January 1, 2026, REG is administered as a four-hour appointment split into five testlets. The section contains:

• 72 multiple-choice questions, distributed across the earlier testlets
• 8 task-based simulations (TBSs), concentrated in the later testlets

MCQs and TBSs each contribute 50% of your final score, so neither format is a rounding error - you can't coast through simulations because you're strong on multiple choice, or vice versa. A standardized 15-minute stopped-clock break occurs after Testlet 3; this break does not count against your four hours of testing time, so use it fully. During the exam you have access to a spreadsheet tool and a four-function calculator, but no outside materials.

The Five REG Content Domains

The AICPA blueprint organizes REG into five domains with defined weighting ranges. These ranges tell you where to invest study hours:

Because Domains 4 and 5 combined can represent well over half of the exam, most study plans should front-load individual and entity taxation. For a domain-by-domain study sequence, see the REG Study Guide 2026: How to Pass on Your First Attempt.

Registration, Eligibility, and Fees

Before you can schedule REG, your state board must approve your application and issue a Notice to Schedule (NTS). Only after receiving the NTS can you book an appointment with Prometric. Because eligibility, credit windows, and licensure and CPE rules are all jurisdiction-specific, the exact steps and timing vary by state board.

On the cost side, NASBA CPA Examination Services (CES) 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 - so your total out-of-pocket cost depends heavily on where you apply. A full pricing breakdown, including how these fees stack, is covered in the REG Certification Cost 2026: Complete Pricing Breakdown.

Once you have an NTS, timing your appointment matters too - testing windows, blackout periods, and rescheduling rules are outlined in the REG Exam Dates 2026: Testing Windows, Deadlines & Scheduling guide.

How REG Is Scored

REG scores are reported on a 0-99 scale, and a passing score is 75. This is a critical distinction: 75 is not "75% of questions correct." It's a scaled score that weighs question difficulty and section performance, and scores are not curved against other candidates in your testing window. Two candidates answering a similar raw percentage of questions correctly can receive different scaled scores depending on which questions they answered correctly and how those items were weighted.

The 66.78% cumulative pass rate for Q1-Q2 2026 suggests REG is passable with disciplined preparation but far from automatic. For a deeper statistical look at how that number breaks down and what it implies for your prep, read the REG Pass Rate 2026: What the Data Shows. If you want to understand exactly what 75 requires in practice, the REG Passing Score 2026: Exactly What You Need to Pass article goes further into scaled scoring.

Why Tax Law Changes Matter for REG Candidates

Tax law doesn't stand still, and the REG blueprint accounts for that with defined effective dates for testing new legislation. Provisions of H.R. 1 with 2024 or 2025 effective dates became eligible for REG testing starting July 1, 2026. If you're studying near that boundary, confirm which version of the content your review materials reflect - outdated materials or materials written for a different testing window can teach you rules that either aren't yet testable or have already been superseded.

One detail that simplifies preparation: candidates are not tested on specific tax rate percentages, amounts, or limitations indexed to inflation. That means you should focus on understanding the mechanics and logic of a rule - how a deduction phases out, how an exchange is characterized, how an entity's income flows through - rather than memorizing dollar thresholds that shift every year.

Who Actually Needs to Pass REG

REG is required for anyone pursuing CPA licensure in the United States, regardless of the industry they eventually work in. That includes candidates heading toward public accounting tax practice, corporate tax departments, controllership tracks, and advisory roles that touch tax or regulatory compliance. Passing REG demonstrates competency in the tax and legal knowledge that underpins a huge share of day-to-day CPA work, even for professionals who don't end up specializing in tax.

Because REG content overlaps so heavily with real tax practice, many employers view a passed REG section as a strong signal for entry-level tax and audit-support roles. If you're weighing how this translates into career outcomes, the REG Salary Guide 2026: Complete Earnings Analysis and Is the REG Certification Worth It? Complete ROI Analysis 2026 articles look at that question from different angles, and REG Jobs surveys the roles most likely to value it directly.

Mapping a Study Plan to the Blueprint

Generic study techniques - timed practice blocks, spaced review, teaching concepts back to yourself - work for REG, but only when scheduled against the blueprint's actual weighting. Since Federal Taxation of Entities (23-33%) and Federal Taxation of Individuals (22-32%) together can make up more than half the exam, they deserve the earliest and longest study blocks, with Business Law, Property Transactions, and Ethics/Procedures layered in afterward as reinforcement rather than afterthoughts.

Practicing under realistic conditions matters as much as content review. Running timed sets on our practice test platform lets you rehearse the actual testlet structure - MCQs first, TBSs later, break included - so exam day timing feels familiar rather than jarring.

Frequently Asked Questions