ISA 540 Auditing Accounting Estimates
Risk Assessment, Professional Scepticism, and Audit Quality for Accounting Estimates
About This Course
Course Information
Accounting estimates are at the centre of modern audits, often involving significant judgement, complexity, and uncertainty. ISA 540 (Revised) sets out the auditor’s responsibilities for evaluating accounting estimates and related disclosures to ensure they are reasonable and free from bias. This refresher course is designed for auditors and accounting professionals seeking to strengthen their grasp of the standard and its practical application. Throughout this course, you’ll revisit key concepts, explore inherent risk factors, learn how to respond to and document estimation risks, and understand the role of professional scepticism in enhancing audit quality. You’ll also study real-world examples, communication challenges, and recent developments that have influenced audit judgments in areas such as fair-value measurement, expected credit losses, and post-pandemic economic uncertainty
Course Sections
This is a 4 unit CPD course that is made up of following contents:
- Understanding the Importance of Accounting Estimates (video)
- Exploring the Core Principles of ISA 540 (Revised) (interactive content)
- Understanding Inherent Risk Factors (video)
- Risk Assessment in Action (interactive content)
- Responding to Risks of Material Misstatement (video)
- Evaluating and Documenting Results (interactive content)
- Professional Scepticism in Practice (video)
- Audit Quality Insights: Lessons from Inspection Findings (interactive content)
- Key Takeaways and Reflection (interactive content)
- Quizzes
- Additional readingsPlanning (quiz)
What You Will Learn
- Explain why accounting estimates are a primary source of material misstatement and how ISA 540 (Revised) addresses estimation risk through a risk-based framework
- Distinguish between the three inherent risk factors (complexity, subjectivity, and estimation uncertainty) and assess how they interact in estimates such as expected credit losses and goodwill impairment
- Evaluate management's estimation process by testing the method, data inputs, and assumptions against observable evidence and the applicable reporting framework
- Apply the three audit response approaches under ISA 540 (Revised): testing management's process, developing an independent point estimate, and reviewing subsequent events
- Identify indicators of management bias across multiple estimates and assess whether patterns of directional optimism or conservatism affect the financial statements
- Describe how professional scepticism guards against confirmation bias, anchoring bias, and automation bias when challenging management's assumptions and models
- Recognise recurring inspection findings from regulators (PCAOB, FRC, IAASA, IFIAR) and apply lessons on documentation quality, governance communication, and the linkage between risk assessment and audit response
Who This Course Is For
- Auditors responsible for evaluating accounting estimates such as ECLs, fair-value measurements, provisions, and impairment models
- Audit managers and partners looking to strengthen their team's application of ISA 540 (Revised) ahead of regulatory inspections
- Accounting professionals involved in preparing or reviewing financial statements that contain significant estimates
- Quality assurance reviewers who assess audit files for compliance with ISA 540 (Revised) and ISQM 1
Prerequisites
- Working knowledge of financial reporting frameworks (IFRS or local GAAP) and how accounting estimates appear in financial statements
- Familiarity with auditing standards, particularly ISA 315 (risk assessment) and ISA 330 (audit responses)
- No prior study of ISA 540 (Revised) is required, though the course assumes general audit experience
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