US CPA Exam Sections Explained: AUD, FAR, REG and Discipline Papers (2026)

What are the US CPA exam sections?

The US CPA exam sections are AUD, FAR, REG, and one Discipline chosen from BAR, ISC, or TCP. That is the current exam structure under CPA Evolution, and it is the shortest accurate answer to the query what are the CPA exam sections. AICPA’s current overview states that all candidates complete three Core sections and one Discipline section, making the exam broad enough to test accounting fundamentals while still allowing one deeper area of focus.

That structure matters because many candidates still search as if there are only four fixed papers. That was the older mental model. In 2026, the better way to think about the exam is this: everyone proves core accounting competence first, then adds one specialization layer.

How does the Core and Discipline model actually work?

The Core is the common technical base of the profession, while the Discipline is where you choose depth. In practice, that means AUD, FAR, and REG are the non-negotiable foundation, and BAR, ISC, or TCP lets you lean toward reporting, systems/controls, or tax planning. The model was designed to reflect how modern accounting careers are built: broad fundamentals first, then a practical area of concentration.

Section Type	Section	What it is really testing	Who usually feels more comfortable here
Core	AUD	Audit logic, evidence, procedures, reporting, ethics	Audit, assurance, internal control and compliance-heavy profiles
Core	FAR	Financial reporting, recognition, measurement, disclosures	Financial accounting and reporting-focused candidates
Core	REG	Federal taxation, business law, professional responsibilities	Tax-aware candidates and people comfortable with rules
Discipline	BAR	Advanced reporting, analysis and decision-useful accounting information	Reporting, FP&A and finance-analysis oriented candidates
Discipline	ISC	Information systems, controls, governance and risk framing	Systems, risk, audit-tech and control-minded candidates
Discipline	TCP	Deeper tax compliance and planning judgment	Tax-focused candidates

What does each CPA section really mean in practical terms?

The best way to understand the sections is to translate abbreviations into candidate experience. Most people do not struggle because the labels are complicated. They struggle because they do not know how each paper feels. So instead of repeating full forms only, it helps to think about what kind of thinking each section rewards.

AUD: Auditing and Attestation

AUD is about professional judgment under evidence constraints. You are not simply memorizing audit terms. You are learning how auditors evaluate risk, gather evidence, respond to control environments, and conclude whether financial information can be relied on. Candidates who like logic, documentation, and structured decision-making often find AUD more intuitive than people expect.

FAR: Financial Accounting and Reporting

FAR is the deepest reporting-heavy Core section for many candidates. It asks whether you understand how transactions become financial statements and how reporting rules shape recognition, measurement, and disclosure. If your accounting foundation is rusty, FAR often feels heavy. If your reporting base is strong, it becomes the section that makes the rest of the qualification feel more manageable.

REG: Taxation and Regulation

REG blends tax logic with legal and ethical rules. This section usually feels better to candidates who can stay precise under rule-based material. It is less about broad storytelling and more about applying structured frameworks correctly. That makes REG very manageable for some candidates and frustrating for others.

BAR, ISC and TCP: the Discipline choice

The Discipline section should match the kind of work you are likely to grow into, not just the topic you dislike least. BAR is attractive if you are strong in reporting and business analysis. ISC fits candidates who are more comfortable around controls, systems, governance, and tech-enabled risk environments. TCP fits candidates who already have a tax lens or want a deeper tax route.

Editorial visual based on the current AICPA Core + Discipline exam structure.

How are the sections tested?

The sections are not just reading tests. They are application tests. AICPA’s exam guidance and scoring pages make clear that the CPA exam uses a mix of question formats and a section-by-section scoring approach. Candidates need to think beyond memorization, because the exam checks whether you can apply technical knowledge under timed conditions.

The big takeaway is simple: if you prepare only by reading notes, the exam will feel harsher than expected. If you prepare through practice questions, simulations, and timed judgment, the structure starts to make much more sense.

What order should candidates take the sections in?

There is no one perfect order, but there are smarter and weaker sequences. In most cases, candidates should begin with the section that gives them either strong confidence or the strongest conceptual base. Many people place FAR early because it builds reporting depth that helps with other sections. Others begin with AUD if they already work in assurance or internal controls.

A practical rule is this: do not choose an order because strangers online said one paper is easiest. Choose an order based on what helps you build momentum, keep your study window intact, and avoid a weak start that damages confidence.

How is this different from the US CPA syllabus?

This page answers “what are the sections?” while the syllabus page answers “what do you actually study inside them?” That distinction matters for cannibalization and for user experience. If you are deciding whether the exam structure feels manageable, stay here. If you want the topic map and study-scope breakdown, use the dedicated US CPA syllabus guide.

In short, sections are the exam’s architecture. Syllabus is the content inside that architecture. Keeping those two pages distinct makes both more useful.

Common mistakes candidates make when thinking about CPA sections

The biggest mistake is treating the Discipline as a shortcut instead of a fit decision. Candidates also underestimate how much FAR still anchors the full journey, and they often confuse “I heard this is easier” with “this suits my background.” Those mistakes usually create bad sequencing, weaker study energy, and avoidable retake pressure.

• Choosing a Discipline based on rumor rather than background
• Ignoring how section order affects momentum
• Confusing section names with actual tested skills
• Using this page for syllabus depth instead of switching to the dedicated syllabus article

Related next steps

If this page helped you understand the architecture, the next useful move is to narrow the rest of the CPA decision stack. These guides are the natural follow-up path:

• US CPA syllabus for topic-level coverage
• US CPA cost for budget planning
• best CPA state board for international candidates for route selection
• how to pass the CPA exam in 6 months for execution planning

FAQ

How many sections are there in the CPA exam in 2026?

There are four sections in total: three mandatory Core sections, AUD, FAR and REG, plus one Discipline chosen from BAR, ISC or TCP.

Do all candidates take BAR, ISC and TCP?

No. Candidates choose one Discipline only. BAR, ISC and TCP are alternatives, not three extra sections that everyone must sit.

What is the hardest CPA section?

That depends on background. FAR often feels broad and heavy, AUD demands judgment under evidence, and REG can feel rule-dense. The more useful question is which section fits your existing strengths least, because that is where your prep risk usually sits.