An auditor reviews a $3.4 million revenue accrual recorded on the last day of the quarter. Management says the contract is signed and the customer is good for it. Two weeks later, the contract gets quietly reversed. The exam question is not whether you "spotted the fraud" but whether you asked the right questions before accepting the entry.
HIGH-FREQUENCY: AU-C 200 defines professional skepticism as an attitude that includes a questioning mind, alertness to conditions that may indicate possible misstatement due to fraud or error, and a critical assessment of audit evidence. All three elements appear together. The exam loves answer choices that include only one or two.
A questioning mind does not stop at the first plausible explanation. When management says "the receivable is collectible," you ask why; when the answer is "the customer always pays," you ask how that customer is doing this year. Alertness to fraud or error means watching for contradictory evidence, not just confirming evidence. If three documents support management and one contradicts, the contradiction gets investigated, not buried.
Common mistakes
- Equating skepticism with assuming dishonesty. Skepticism is not "management is lying." It is "I will not accept what management says without evidence." The exam will offer a trap answer that says skepticism requires presuming fraud. That is wrong. Skepticism is neutral with respect to honesty; it is uncompromising with respect to evidence.
- Treating judgment as opinion. Professional judgment is not the auditor's personal preference. It is a structured application of training and standards to the facts. An answer that frames judgment as "the auditor's gut feel" or "the partner's discretion" is wrong. Judgment must be defensible in writing under AU-C 230.
- Confusing biases with one another. Anchoring fixes on a number; availability fixes on a memorable case; confirmation fixes on a belief; overconfidence fixes on the auditor's own ability. The exam may describe a fact pattern and ask which bias applies.
Bottom line
- Professional skepticism (AU-C 200) = questioning mind, alertness to fraud or error, and critical assessment of audit evidence.
- Professional judgment = competent, objective application of training and knowledge with all relevant facts, including contradictory evidence, in view.
- Skepticism is a mindset; judgment is a skill. Skepticism flags that something needs more work, judgment decides what kind and how much.
- Four biases undermine skepticism most often: anchoring, availability, confirmation, and overconfidence.
Exam shortcut
When a question describes an auditor accepting management's explanation without corroboration, the answer almost always involves a skepticism failure. Look for the answer choice that pairs skepticism with an action: request supporting documentation, perform additional procedures, expand sample size.
The full lesson (about 1,940 words, 13 min read) adds 1 worked example, all 5 common mistakes, a self-check, free in the app.
Learning objectives
- I.B1
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