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Estimation uncertainty

Estimation uncertainty is the susceptibility of an accounting estimate and related disclosures to an inherent lack of precision in measurement. It can arise from incomplete information, uncertainty about future outcomes or other measurement limitations. The auditor considers the uncertainty, the assumptions and data, possible management bias and the adequacy of disclosures.

Worked example

A warranty provision depends on future failure rates; the auditor tests historical claims and evaluates a range of plausible outcomes and related disclosures.

Common mistake

An estimate can be reasonable despite uncertainty; conversely, a precise number does not prove that its assumptions are reliable.

Where it appears in your exams

QualificationExamRelationshipPeriod
ACCA AA Supporting September 2026–June 2027
ACCA AAA (INT) Supporting September 2026–June 2027