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CPACPA Core vs Discipline: How BAR, ISC, and TCP Actually Differ (And How to Choose)
Since January 2024, the CPA exam no longer includes BEC (Business Environment and Concepts). In its place, candidates choose one of three discipline sections: BAR, ISC, or TCP. Most candidates choose based on their career specialisation — but the pass rate differences are significant and worth understanding before you decide.
The three disciplines at a glance
| Discipline | Full name | 2025 pass rate | Best suited for |
|---|---|---|---|
| BAR | Business Analysis and Reporting | 42% | Candidates heading into financial analysis, valuation, or advisory |
| ISC | Information Systems and Controls | 68% | Candidates with IT audit, systems, or technology risk backgrounds |
| TCP | Tax Compliance and Planning | 78% | Candidates specialising in tax — the most natural follow-on to REG |
What BAR actually covers
BAR — Business Analysis and Reporting — is the closest successor to the old BEC section, but deeper. It covers financial statement analysis, technical accounting topics at an advanced level, managerial accounting, and advanced governmental and not-for-profit accounting (moved from FAR under CPA Evolution). The combination of advanced GASB content with financial analysis makes it the broadest and most demanding discipline.
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What ISC actually covers
ISC — Information Systems and Controls — covers IT governance, information security, system and organisation controls (SOC), and data management. Its 68% pass rate reflects both more specialist candidates sitting it and a more focused content scope. If you work in IT audit, cybersecurity, or technology risk, ISC is the natural choice and you will likely find the content maps directly to your day-to-day work.
What TCP actually covers
TCP — Tax Compliance and Planning — goes deeper into federal taxation than REG, covering complex individual tax, entity tax planning, multi-jurisdictional issues, and tax research. With a 78% pass rate, it is the most accessible discipline — but that is partly because tax specialists sit it overwhelmingly, bringing domain expertise that generic candidates lack. Note: TCP will incorporate OBBBA provisions from 1 July 2026.
How to choose
- Choose TCP if you work in tax or plan to — 78% pass rate, content builds directly on REG, and the credential signals genuine tax depth
- Choose ISC if you work in IT audit, cybersecurity, or technology risk — the content maps to real practice and the pass rate reflects that alignment
- Choose BAR if you are headed into financial analysis, valuation, investment banking advisory, or want the broadest analytical credential — but prepare for FAR-level difficulty
- Do not choose BAR by default because the other two feel too specialist. BAR's difficulty is real and candidates who underestimate it consistently regret it
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