CPA Evolution is the most significant restructuring of the CPA exam since it was computerized in 2004. Launched on January 1, 2024, the initiative replaced the existing four-section model with a new Core plus Discipline structure that fundamentally changed how candidates approach the exam, in which order sections are taken, and what content areas receive the deepest testing.
For candidates beginning their CPA journey in 2026, CPA Evolution is simply the exam as it exists. For candidates who started under the old model and are still completing sections, understanding exactly how the transition worked and what applies to their situation is critical for avoiding planning mistakes.
This guide covers what CPA Evolution is, why it was introduced, exactly what changed, what stayed the same, how the new structure works, and what every candidate preparing in 2026 needs to understand before registering for any section.
Table of Contents
- Why CPA Evolution Happened
- What the Old Exam Looked Like
- The New Structure: Core Plus Discipline
- What Changed in Each Core Section
- The Three Discipline Sections Explained
- What Happened to BEC
- The Credit Window Change
- Testing Schedule: Core vs Discipline
- The CPA License Under CPA Evolution
- What This Means for Candidates Preparing in 2026
- Key Takeaways
- FAQ
Key Takeaways
| Point | Details |
|---|---|
| CPA Evolution launched January 1, 2024 | The new exam structure replaced the four-section model entirely. BEC was the last day of testing on December 15, 2023. |
| The new model is Core plus Discipline | All candidates pass three core sections (FAR, AUD, REG) and choose one discipline section (BAR, ISC, or TCP). |
| The discipline section does not limit future practice | Choosing BAR, ISC, or TCP does not restrict what a licensed CPA can do professionally. All paths lead to the same credential. |
| Core sections test continuously, discipline sections are quarterly | FAR, AUD, and REG are available year-round. BAR, ISC, and TCP are only available in January, April, July, and October. |
| The credit window is now 30 months in most states | NASBA extended the window from 18 to 30 months to accommodate the more demanding exam structure. Candidates must verify their specific state rule. |
| Technology and data analytics are embedded throughout | CPA Evolution added explicit data analytics and digital acumen content across all sections, reflecting the profession’s increasing reliance on technology. |
Why CPA Evolution Happened
CPA Evolution did not emerge from a single decision. It was the product of a years-long research and consultation process that identified a growing gap between what the existing exam tested and what newly licensed CPAs were actually expected to do in practice.
The catalyst was an AICPA-commissioned practice analysis, a structured research study that gathered input from public accounting firms, state boards, business and industry professionals, government entities, and academic institutions. The study asked one central question: what knowledge and skills do newly licensed CPAs actually need to perform competently from day one?
The findings were clear. The accounting profession had changed significantly. Firms were hiring fewer candidates with purely technical accounting skills and investing more heavily in candidates who could work with data, understand technology systems, apply analytical judgment to complex scenarios, and operate effectively in a technology-driven business environment. The existing four-section CPA exam, which had not undergone a structural overhaul since it was computerized in 2004, was not adequately testing those capabilities.
A 2021 AICPA and NASBA gap analysis specifically identified that recent accounting graduates were skilled in data analytics and IT audits but were less prepared in cybersecurity, IT governance, and Systems and Organization Controls engagements. That finding directly influenced the creation of ISC as a discipline section.
The broader conclusion of the research was that the profession needed an exam model that tested a strong universal foundation for all candidates while also allowing for deeper specialization in the areas where CPAs actually work. The result was the Core plus Discipline model that became CPA Evolution.
What the Old Exam Looked Like
Before January 2024, the CPA exam consisted of four sections that every candidate was required to pass:
Financial Accounting and Reporting (FAR), Auditing and Attestation (AUD), Regulation (REG), and Business Environment and Concepts (BEC).
All four sections were required for every candidate regardless of career path or specialization. BEC covered business environment concepts, corporate governance, economic concepts, financial management, information technology, and written communication skills. It was the shortest and most varied of the four sections.
The credit window under the old model was 18 months. Once a candidate passed the first section, all remaining sections had to be passed within 18 months before the earliest passing score expired.
All four sections were available for continuous testing with score releases on a rolling schedule. There were no quarterly windows or extended score holds.
The New Structure: Core Plus Discipline
CPA Evolution replaced the four-section model with a six-section model in which candidates must pass four total sections: three required cores and one chosen discipline.
The three core sections, required for every candidate:
Financial Accounting and Reporting (FAR), Auditing and Attestation (AUD), and Regulation (REG).
The three discipline sections, one of which every candidate must choose:
Business Analysis and Reporting (BAR), Information Systems and Controls (ISC), and Tax Compliance and Planning (TCP).
The fundamental logic of the new structure is that the core sections establish the foundational knowledge that every CPA needs regardless of where they practice, while the discipline sections allow candidates to demonstrate deeper competency in the area most relevant to their career direction.
This structure produced several important changes from a candidate planning standpoint. The total number of sections to pass remained at four, which is the same as the old model. However, the content distribution changed, the testing schedule differs between core and discipline sections, and the discipline choice introduces a planning decision that did not exist under the old model.
What Changed in Each Core Section
The three core sections under CPA Evolution are not identical to their predecessors under the old model. Each retained its foundational content but was adjusted to reflect the redistribution of content to the discipline sections.
FAR retained its coverage of financial accounting and reporting for commercial entities, not-for-profit organizations, and governmental entities. However, some of the more advanced governmental accounting content that previously appeared in FAR has been partially shifted to BAR’s Area III. FAR continues to test the foundational governmental accounting framework, while BAR tests it at a deeper application and analysis level.
AUD retained its core coverage of auditing and attestation standards, risk assessment, evidence, and reporting. Some of the technology-related internal control content, particularly around IT general controls and information systems, has been more explicitly developed in the ISC discipline section. AUD continues to test controls at the foundational level while ISC extends it into the IT-specific domain.
REG retained its coverage of federal taxation, business law, and professional responsibilities. Some of the more advanced individual and business tax planning content that previously appeared in REG has been extended and deepened in the TCP discipline section. REG covers the foundational tax framework while TCP tests advanced tax compliance and planning at a higher analytical level.
The practical effect is that the core sections became more clearly foundational while the discipline sections took on the advanced or specialized content that the old four-section model could only test superficially given the constraint of testing everything across four sections.
Additionally, all core sections now embed technology and data analytics content more explicitly than the old exam did. Digital acumen concepts, including the ability to identify relevant data, understand data governance principles, and apply analytical tools to accounting tasks, appear throughout the core sections under CPA Evolution in ways they did not under the old model.
The Three Discipline Sections Explained
Each discipline section is designed as a direct extension of one core section, allowing candidates to demonstrate advanced competency in a specialized domain.
BAR (Business Analysis and Reporting) is the extension of FAR. It tests advanced financial statement analysis, technical accounting and reporting at a higher analytical level, and state and local government accounting at a deeper application level than FAR. BAR also introduces data analytics as a distinct content element applied to financial analysis and reporting. It carries the lowest pass rate of the three discipline sections at approximately 41% through Q1 2026.
ISC (Information Systems and Controls) is the extension of AUD, specifically the controls and technology elements of audit practice. It covers IT governance, IT general controls, application controls, cybersecurity, data management, and SOC engagements. ISC was created in direct response to the profession’s identified need for CPAs with stronger technology and controls competency. It carries a pass rate of approximately 67% through 2025.
TCP (Tax Compliance and Planning) is the extension of REG. It tests advanced individual and business tax compliance and planning at a higher analytical level than REG, with a greater emphasis on tax strategy, planning scenarios, and the application of tax law to complex transactions. TCP carries the highest pass rate of the three discipline sections at approximately 78% through 2025.
For a detailed comparison of all three discipline sections including how to choose between them based on background and career direction, the guide on BAR vs ISC vs TCP covers that decision in full.
What Happened to BEC
BEC, the Business Environment and Concepts section, was retired effective December 15, 2023. It was the last day any candidate could sit for BEC. From January 1, 2024 onward, BEC ceased to exist as a testable section.
The content that was previously covered in BEC was redistributed across the new structure rather than simply eliminated. Corporate governance content moved primarily to FAR and the core sections. Economic concepts and financial management content relevant to business analysis moved to BAR. Information technology content, particularly the IT governance and controls material, became the foundation of the ISC discipline section. Written communication, which had been a distinctive BEC element, was removed from the exam format entirely.
Candidates who had passed BEC under the old model before January 1, 2024 received credit for the discipline section requirement under the transition policy. They were not required to sit for BAR, ISC, or TCP if they had already passed BEC. This was the most significant transition benefit for candidates who had already completed most of the old exam.
Candidates who had not yet passed BEC as of January 1, 2024 were required to sit for one of the three new discipline sections to complete the exam.
The Credit Window Change
One of the most practically significant changes under CPA Evolution was the extension of the credit window from 18 months to 30 months.
Under the old model, once a candidate passed the first section, all remaining sections had to be passed within 18 months before the earliest passing score expired. This created significant time pressure, particularly for working professionals who could only study part-time.
NASBA recommended an extension to 30 months as part of the CPA Evolution transition, and most states adopted it. The rationale was straightforward: the new exam structure is more demanding. Candidates must now pass an additional discipline section on top of the three cores, with the discipline sections available only quarterly and carrying score release timelines of 6 to 10 weeks. An 18-month window was simply not workable for a significant portion of candidates under the new structure.
The current situation as of 2026 is that most states operate under a 30-month credit window, though some jurisdictions have adopted different windows. Washington state, for example, allows up to 36 months. Candidates must verify the specific window that applies in their jurisdiction by checking directly with their state board of accountancy. No single window applies universally across all jurisdictions.
Testing Schedule: Core vs Discipline
One of the most important operational differences between the new and old exam structures is the testing schedule.
Under the old model, all four sections were available for continuous testing. Candidates could schedule any section at any time throughout the year.
Under CPA Evolution, this flexibility applies only to the three core sections.
Core sections (FAR, AUD, REG): Available for continuous testing year-round. Candidates can schedule these sections at any Prometric testing center on any available date. Score releases follow a rolling schedule with results typically available within one to two weeks of testing.
Discipline sections (BAR, ISC, TCP): Available only during the first month of each calendar quarter: January, April, July, and October. Candidates can only sit for their chosen discipline during these specific windows. Score releases for discipline sections take approximately 6 to 10 weeks after the testing window closes, significantly longer than core section score releases.
The reason discipline sections use quarterly windows rather than continuous testing relates to the statistical requirements of exam scoring. Because each discipline section is chosen by only a subset of candidates rather than all candidates, the number of test-takers per discipline section is significantly lower than for the core sections. Adequate statistical analysis for scoring and scaling requires collecting a sufficient volume of results, which is achieved more efficiently through concentrated quarterly windows than through continuous testing spread across the year.
The practical implication for candidates is that discipline section timing must be planned explicitly rather than scheduled on demand. A candidate who finishes the three core sections but misses the next discipline window by two weeks faces a wait of up to three months before the following opportunity. That gap, if unplanned, can push the total exam completion timeline significantly beyond what was expected.
The CPA License Under CPA Evolution
One of the most important facts about CPA Evolution is what it did not change: the CPA license itself.
Regardless of which discipline section a candidate passes, the resulting CPA credential is identical. A candidate who passes BAR receives the same license as a candidate who passes ISC or TCP. The discipline section chosen for the exam does not restrict what a licensed CPA can practice, what engagements they can work on, or what career path they can pursue.
This was a deliberate design choice by the AICPA and NASBA. The purpose of the discipline sections is to allow candidates to demonstrate deeper competency in an area relevant to their current career direction, not to create tiered or restricted credentials. A CPA is a CPA regardless of which discipline was selected for testing.
The practical implication is that the discipline choice should be made based on which section best fits a candidate’s background and preparation efficiency, not based on concerns about credential limitations. The guide on what is the BAR exam covers the specific content and career alignment of BAR in detail, and the BAR vs ISC vs TCP comparison helps candidates determine the best fit for their situation.
What This Means for Candidates Preparing in 2026
For candidates beginning their CPA exam journey in 2026, the CPA Evolution structure is simply the current exam. The transition from the old model is complete, and all relevant planning happens within the new framework.
The key planning considerations that CPA Evolution creates for 2026 candidates are:
The discipline section choice is a planning decision, not just an exam decision. Choosing between BAR, ISC, and TCP affects study sequence, content overlap between sections, and the quarterly timing of the discipline exam. This decision should be made before registering for the first section, not after passing the three cores.
The discipline section’s quarterly schedule must be built into the overall exam timeline from the start. Identifying the target discipline exam date and working backward from it to schedule the core sections prevents the common mistake of finishing the cores and then discovering the next discipline window is months away.
The 30-month credit window provides more runway than the old 18-month window, but it is not unlimited. Working professionals who take the exam at a relaxed pace can still run into credit window pressure if the timeline is not monitored. The guide on how long it takes to pass all four CPA exam sections covers realistic timelines in detail.
Content overlaps between core and discipline sections are worth exploiting through sequencing. FAR content directly supports BAR. AUD content supports ISC. REG content supports TCP. Sitting the chosen discipline section shortly after the corresponding core section maximizes preparation carry-over and reduces total study hours required.
For candidates who want structured help navigating the CPA Evolution framework, including discipline section selection, exam sequencing, and personalized study planning, the one-on-one CPA tutoring services at Andrew Katz Tutoring include exam planning as a core component of initial sessions. Candidates can review rates and packages before scheduling a consultation.
Recommended Reading
- BAR vs ISC vs TCP: Which CPA Discipline Section Should You Choose in 2026?
- What Is the BAR CPA Exam? Everything Candidates Need to Know in 2026
- The CPA Exam Section Order That Gives You the Best Chance of Passing
- How Long Does It Take to Pass All 4 CPA Exam Sections in 2026?
FAQ
What is CPA Evolution?
CPA Evolution is a joint initiative by the AICPA and NASBA that restructured the CPA exam, launching January 1, 2024. It replaced the previous four-section model, which required all candidates to pass FAR, AUD, REG, and BEC, with a Core plus Discipline model in which all candidates pass three core sections and choose one of three discipline sections.
What happened to BEC on the CPA exam?
BEC was retired on December 15, 2023. Its content was redistributed across the new structure: corporate governance content moved to the core sections, financial management and business analysis content moved to BAR, and IT governance and controls content became the foundation of ISC. Written communication, a unique BEC element, was removed entirely. Candidates who had passed BEC before January 1, 2024 received credit for the discipline section requirement under the transition policy.
What are the three discipline sections under CPA Evolution?
The three discipline sections are BAR (Business Analysis and Reporting), ISC (Information Systems and Controls), and TCP (Tax Compliance and Planning). Each is designed as an extension of one core section: BAR extends FAR, ISC extends AUD, and TCP extends REG. Candidates choose one discipline section to pass in addition to the three core sections.
Does the discipline section I choose affect my CPA license?
No. The CPA credential is identical regardless of which discipline section a candidate passes. Choosing BAR, ISC, or TCP does not restrict professional practice, engagement types, or career paths in any way. The discipline choice affects only the exam preparation and content tested, not the credential received.
Why are discipline sections only available quarterly?
Discipline sections are available only in January, April, July, and October because each section is taken by a smaller subset of candidates than the core sections. Adequate statistical analysis for fair and accurate scoring requires collecting a sufficient volume of results, which is achieved more efficiently through quarterly concentrated windows than through continuous testing spread across the year.
What is the credit window under CPA Evolution?
Most states now operate under a 30-month credit window following NASBA’s recommendation as part of CPA Evolution. This extended from the previous 18-month window. Some jurisdictions have adopted different windows, with Washington state allowing up to 36 months. Candidates must verify their specific jurisdiction’s rule directly with their state board of accountancy.
I started the CPA exam under the old model. Do I need to retake sections?
If you passed AUD, FAR, or REG under the old model and those credits are still valid, they carry over directly to the new structure with no retake required. If you passed BEC before January 1, 2024, you are exempt from the discipline section requirement. If BEC credit expired or was never held, you must pass one of the three new discipline sections to complete the exam.
Looking for guidance on navigating the CPA Evolution exam structure, choosing a discipline section, or building a personalized exam timeline? Visit the CPA tutoring services page at Andrew Katz Tutoring, review rates and packages, or browse the blog for more CPA exam strategy resources.