Passing the CPA Regulation section feels less like accounting and more like practicing law without a license. You aren't just finding numbers; you're interpreting statutes and defending a client's position against a set of complex, often conflicting, rules.
Quick answer
Plan for 80-100 study hours for the CPA REG section, which translates to a 4- to 6-week schedule for most working professionals. Success requires mastering the application of tax law across entities, individuals, and property transactions, as the 2026 exam tests judgment heavily in its scenario-based questions.
Key facts
- Recommended Study Hours: 80-100 hours
- Passing Score: 75 on a 0-99 scale
- Exam Format (2026): 4 testlets (2 Multiple-Choice Question testlets, 2 Task-Based Simulation testlets)
- Official Content Areas: Ethics/Procedures (10-20%), Business Law (10-20%), Property Transactions (15-25%), Individuals (15-25%), Entities (25-35%)
- Tested Tax Law: Generally, the tax law from the preceding calendar year (2025 law for the 2026 exam)
- Official Body: American Institute of Certified Public Accountants (AICPA)
The AICPA reports the cumulative pass rate for the REG section was 61% in 2023 (AICPA), making it one of the more passable sections if you prepare correctly.
What Is Tested on the CPA REG Exam in 2026?
The REG exam tests your knowledge of U.S. federal taxation and business law. The first mistake candidates make is thinking of it as two simple buckets. The AICPA blueprints for 2026 break the exam into five specific content areas, and understanding this weighting is the key to an efficient study plan.The official REG exam content breakdown is:
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- Area I: Ethics, Professional Responsibilities, and Federal Tax Procedures (10-20%): This covers the rules governing tax practitioners. Think Treasury Circular 230, AICPA Statements on Standards for Tax Services (SSTS), and taxpayer penalties.
- Area II: Business Law (10-20%): This tests your understanding of the legal framework of business, including contracts, agency, and debtor-creditor relationships.
- Area III: Federal Taxation of Property Transactions (15-25%): This involves the tax consequences of acquiring and disposing of assets, including basis, gains/losses, depreciation recapture, and like-kind exchanges.
- Area IV: Federal Taxation of Individuals (15-25%): This is the classic Form 1040 world: gross income, deductions, credits, and the Alternative Minimum Tax (AMT).
- Area V: Federal Taxation of Entities (25-35%): This is the most heavily weighted section. It covers the formation, operation, and liquidation of C-corporations, S-corporations, and partnerships. It also includes trusts and LLCs, which are legal entities taxed as partnerships, corporations, or disregarded entities.
Notice that entity taxation is the single largest piece of the exam. A study plan that doesn't reflect this weighting is inefficient. For a full rundown of the exam structure, you can review the official AICPA blueprint weightings.
How Many Hours Should I Study for CPA REG?
The 80-100 hour estimate is a reliable average for a first-time pass. For a working professional, this typically means a 4- to 6-week study window, putting in 15-25 hours per week.However, this is just a starting point.
Your Tax Background
A seasoned tax associate might pass in 70 hours. Someone coming from a pure audit background may need 110 hours or more to build the necessary foundation in tax law. Be honest about your starting point.Time Since College
If your last tax class was five years ago, you will need more time to relearn foundational concepts like basis and non-recognition transactions. The rules have likely changed since you were in school.Study Material Efficiency
An adaptive learning platform that diagnoses and targets your weak spots saves dozens of hours compared to a linear video course. Instead of re-watching lectures on topics you already know, you can focus your limited time on areas where you are losing points. Try VoraPrep's adaptive CPA practice questions to see the difference.Myth vs. Reality: Your REG Study Focus
| Myth | Reality | Weekly Drill |
|---|---|---|
| REG is just memorizing tax thresholds. | REG tests your ability to apply thresholds in multi-step calculations. The number itself is useless if you can't navigate the phase-outs and limitations that surround it. | Threshold Impact Drill: For major limits (QBI, PALs, medical expense AGI floor), don't just memorize the number. Write down a 3-step calculation showing how a taxpayer just below, inside, and just above the threshold gets a different result. |
| Business Law is easy points. | Business Law questions test precise legal definitions. It's an area where candidates lose easy points by being careless with terms like "offer," "acceptance," and "consideration." | Principle Application Drill: For contract formation, define Offer, Acceptance, and Consideration. Then, do 10 VoraPrep MCQs and for each wrong answer, write one sentence explaining which of the three elements was missing or flawed. |
| All tax topics are weighted equally. | Entity taxation (Area V) is the biggest section (25-35%). Under-studying partnership basis or S-corp distributions is a critical error that can cost you the exam. | Weighted Review Drill: Use VoraPrep's analytics to see your performance by AICPA blueprint area. Ensure your weakest scores are not in Area V. If they are, dedicate an entire weekend to only entity tax TBSs. |
| Basis is just a simple tracking number. | Basis is the central nervous system of entity and property taxation. Incorrectly calculating basis has a domino effect on gains, losses, and distributions. | Basis Domino Drill: Take a simple fact pattern: a partner contributes property to a partnership. Calculate their initial outside basis. Then, add one new fact (e.g., the partnership takes on debt) and recalculate. Add another (e.g., a distribution) and recalculate again. See how every event touches basis. |
Which Tax Rules and Thresholds Are Most Heavily Tested?
The REG exam requires you to know specific dollar limits and rules. For the 2026 exam, you are generally tested on the tax law effective for the 2025 calendar year. Always confirm the exact tax law with the official AICPA Blueprints.Here are the high-stakes areas where you must have deep knowledge.
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1. Qualified Business Income (QBI) Deduction (IRC §199A)
This is a favorite of exam writers because it’s complex and has multiple failure points. The QBI deduction allows eligible taxpayers to deduct up to 20% of their qualified business income, but it is subject to limitations based on taxable income, W-2 wages, and property basis. Worked Example: QBI Deduction CalculationLet's look at Sarah, a single taxpayer in 2025 who runs a consulting business (a Qualified Trade or Business, not an SSTB).
Scenario:- Qualified Business Income (QBI): $200,000
- W-2 Wages paid by business: $50,000
- Unadjusted Basis Immediately after Acquisition (UBIA) of qualified property: $100,000
- Sarah's total taxable income (before QBI): $220,000
- 2025 QBI Taxable Income Thresholds (illustrative): $195,300 to $245,300 for single filers.
| Step | Calculation | Result | The Trap to Avoid |
|---|---|---|---|
| 1. Tentative Deduction | 20% of QBI ($200,000 20%) | $40,000 | Stopping here. This is just the starting point. |
| 2. W-2/UBIA Limit | Greater of: a) 50% of W-2 Wages ($25,000) b) 25% W-2 + 2.5% UBIA ($15,000) | $25,000 | Incorrectly choosing the lesser amount. The rule is the greater of the two. |
| 3. Max Potential Reduction | Tentative Deduction - W-2/UBIA Limit ($40,000 - $25,000) | $15,000 | Applying this full reduction. Since Sarah's income is in the phase-in range, the reduction is only partial. |
| 4. Phase-in Percentage | (Taxable Income - Threshold) / Phase-in Range ($220,000 - $195,300) / $50,000 | 49.4% | Miscalculating the phase-in range or using the wrong threshold. |
| 5. Applied Reduction | Max Reduction Phase-in % ($15,000 * 49.4%) | $7,410 | Applying the percentage to the wrong base number. |
| 6. Final QBI Deduction | Tentative Deduction - Applied Reduction ($40,000 - $7,410) | $32,590 | Misapplying any of the previous steps will lead to a completely different, and wrong, answer. |
This multi-step logic is exactly what you will see on a Task-Based Simulation.
2. Entity Basis Calculations
Basis is the foundation for determining gain, loss, and the taxability of distributions for partnerships and S-corporations. You must know how to calculate and adjust basis as if it were second nature.- Partnership Basis (IRC §705, §722, §752): Know the difference between outside basis (a partner's basis in their partnership interest) and inside basis (the partnership's basis in its assets). Be prepared to adjust a partner's basis for contributions, distributions, shares of income/loss, and changes in partnership liabilities.
- S-Corporation Stock Basis (IRC §1367): Understand how to calculate a shareholder's initial stock basis and adjust it annually for income/loss items and distributions. Crucially, you must also track debt basis, which can allow a shareholder to deduct losses in excess of their stock basis.
3. Individual Tax Traps (AMT & PALs)
Beyond standard deductions, the exam tests complex limitations that trip up unprepared candidates.- Alternative Minimum Tax (AMT): Understand the basic framework of calculating AMT, including common adjustment and preference items (e.g., state and local taxes, certain interest on private activity bonds).
- Passive Activity Loss (PAL) Rules (IRC §469): These rules prevent taxpayers from using passive losses to offset ordinary income. Know the definition of a passive activity, the exceptions (like the "mom and pop" rental real estate exception allowing up to a $25,000 deduction), and how suspended PALs are carried forward.
4. Tax Preparer Ethics and Responsibilities
This is not an afterthought; it is a core competency.- Treasury Circular 230: This governs your practice before the IRS. Know the duties and restrictions, including due diligence and conflicts of interest.
- AICPA SSTS: The Statements on Standards for Tax Services provide ethical guidelines. Be able to apply them to scenarios involving questionable client data.
- Taxpayer Penalties (IRC §6662): Understand the accuracy-related penalties for negligence or substantial understatement of tax liability.
Our guides on the AICPA Statements on Standards for Tax Services and common taxpayer penalties provide the necessary detail for these topics.
What's a Realistic 6-Week REG Study Plan for a Working Professional?
A realistic plan involves three two-week phases: Foundation, Entity Deep Dive, and Final Review. This approach prioritizes consistency over cramming, which is essential for retaining the complex rules of REG.Phase 1: Foundation (Weeks 1-2)
Goal: Build a strong base in individual tax and property transactions.- Mon-Fri (1.5-2 hours/day): Watch lectures or read materials on a new topic (e.g., Gross Income). Immediately follow up with 20-30 MCQs on VoraPrep to solidify the concept.
- Sat/Sun (3-4 hours/day): Review the week's topics. Tackle your first few Task-Based Simulations on individual tax and property transactions.
Phase 2: The Entity Deep Dive (Weeks 3-4)
Goal: Master the most heavily tested area: entity taxation.- Mon-Fri (1.5-2 hours/day): Focus exclusively on C-corps, S-corps, and partnerships. Pay special attention to formation, distributions, and basis calculations.
- Sat/Sun (4-5 hours/day): Work through complex TBSs involving partnership basis adjustments or S-corp distributions. This is where you apply the rules. Also, cover Business Law and Ethics.
Phase 3: Review and Simulation Practice (Weeks 5-6)
Goal: Integrate all topics, master TBSs, and build exam stamina.- Mon-Fri (2-2.5 hours/day): Do mixed sets of 50 MCQs covering all five REG content areas. Spend at least an hour each night on TBSs, re-doing any you get wrong until you understand the logic.
- Weekend 1 (5-6 hours): Take a full-length, timed mock exam.
- Weekend 2 (5-6 hours): Meticulously review your mock exam results. Use VoraPrep's analytics to identify your final weak areas and spend the last week drilling them. If a niche topic like Qualified Opportunity Zones gave you trouble, now is the time to fill that gap.