Side-by-side comparison
| Dimension | Factual misstatement | Judgmental misstatement | Projected misstatement |
|---|---|---|---|
| Definition (ISA 450.4(a)) | A misstatement about which there is no doubt | A difference arising from management's judgments that the auditor considers unreasonable | The auditor's best estimate of misstatements in a population, projected from sample errors |
| Source of identification | Direct testing: recalculation, vouching, confirmation | Evaluation of accounting estimates, fair values, policy selections | Extrapolation from sample results under ISA 530 |
| Certainty | Certain. The error exists. | Judgment-based. The auditor and management may disagree. | Estimated. Subject to sampling risk. |
| Typical example | Invoice recorded at €50,000 instead of €55,000 | Useful life of a building set at 50 years when 30 years is more supportable | Sample of 40 invoices found €12,000 of errors, projected to €96,000 across the population |
| How management responds | Corrects the error or explains why not | May defend the judgment as reasonable | May challenge the extrapolation method |
Key Points
- Factual misstatements are definite errors. No judgment involved in identifying them.
- Judgmental misstatements arise from accounting estimates or policies the auditor considers unreasonable.
- Projected misstatements extrapolate sample errors to the full population and carry sampling risk.
- The auditor must accumulate all categories on the summary of audit differences and evaluate them against materiality.
When the distinction matters on an engagement
The classification matters because it determines how you evaluate the misstatement and how difficult it is to get management to correct it. A factual misstatement of €30,000 is €30,000. Management can correct it or leave it uncorrected, and you record it on the summary of audit differences either way.
A judgmental misstatement is harder. Under ISA 540.17, you evaluate whether management's estimate is reasonable. If you conclude that a depreciation rate of 2% on a building is unreasonable and that 3.3% is more appropriate, the difference is a judgmental misstatement. Management may argue their rate is within a reasonable range. ISA 450.8 requires you to communicate all accumulated misstatements to those charged with governance, including judgmental ones, even when management disagrees.
A projected misstatement adds sampling risk. ISA 530.14 requires you to project sample errors to the population. That projection is an estimate, not a certainty. If the client challenges the projection, you need to demonstrate that your extrapolation method is appropriate for the sampling approach you used. A poorly documented projection is the easiest misstatement for management to dismiss.
Worked example: Hofstede Precision Engineering B.V.
Client: Dutch manufacturer, FY2024, revenue €95M, IFRS reporter.
Factual misstatement
During testing of trade receivables, the team identifies a credit note of €18,000 issued on 28 December 2024 that the client did not record until January 2025. This overstates revenue by €18,000.
Documentation note: "Factual misstatement per ISA 450.4(a). Credit note 2024-CN-412 dated 28 December 2024, recorded 6 January 2025. Revenue overstatement of €18,000. Added to summary of audit differences. Management agreed to correct."
Judgmental misstatement
Hofstede carries a warranty provision of €420,000 based on a 0.5% claims rate applied to FY2024 revenue. The auditor's analysis of actual claims over the past four years shows a consistent rate of 0.9%. The difference of €378,000 (0.4% × €95M revenue) is a judgmental misstatement.
Documentation note: "Judgmental misstatement per ISA 450.4(a). Management's warranty rate of 0.5% is below the four-year average of 0.9% and the median of 0.85%. ISA 540.17 assessment: management's estimate is not within a reasonable range. Misstatement of €378,000 added to summary of audit differences. Management maintains the lower rate reflects improved product quality in FY2024. Communicated to those charged with governance per ISA 450.12."
Projected misstatement
The team selects a sample of 40 purchase invoices from a population of 3,200 invoices totalling €28M. The sample reveals two errors: one invoice of €4,200 recorded at €4,800 (overstatement of €600) and one invoice of €7,100 with no goods receipt note (overstatement of €7,100). Total sample errors: €7,700. Projected to the population: €7,700 × (3,200 / 40) = €616,000.
Documentation note: "Projected misstatement per ISA 530.14. Sample of 40 from population of 3,200 purchase invoices (€28M total). Known error: €7,700. Projection method: ratio estimation. Projected misstatement: €616,000. Sampling risk noted. Added to summary of audit differences."
Evaluation against materiality
Overall materiality for the engagement: €950,000 (1% of revenue). Performance materiality: €665,000. Summary of audit differences: €18,000 (factual) + €378,000 (judgmental) + €616,000 (projected) = €1,012,000. The total exceeds overall materiality. The auditor must request management to correct the misstatements or consider modifying the opinion under ISA 450.11.
What reviewers and practitioners get wrong
The AFM's 2021 inspection cycle found that firms did not consistently project sample misstatements to the population. Some firms recorded only the known (sample) error on the summary of audit differences, omitting the ISA 530.14 extrapolation entirely. This understates the total accumulated misstatements and distorts the evaluation against materiality.
Teams sometimes classify a judgmental misstatement as factual when management agrees to adjust. The classification does not change based on whether management corrects the error. A difference arising from an unreasonable judgment remains a judgmental misstatement in the audit documentation, even after correction. ISA 450.5 requires the auditor to accumulate misstatements identified during the audit other than those that are clearly trivial. The classification documents the nature of the finding, not its resolution.
Key standard references
- ISA 450.4(a): Defines the three categories of misstatements — factual, judgmental, and projected.
- ISA 450.11: Requires the auditor to determine whether uncorrected misstatements are material, individually or in aggregate.
- ISA 530.14–15: Requires projection of sample errors to the population and evaluation of results.
- ISA 540.17: Governs evaluation of the reasonableness of accounting estimates.
Related terms
Related reading
Frequently asked questions
Does the classification of a misstatement change if management agrees to correct it?
No. The classification documents the nature of the finding, not its resolution. A difference arising from an unreasonable judgment remains a judgmental misstatement in the audit documentation even after management corrects it. ISA 450.5 requires the auditor to accumulate misstatements identified during the audit other than those that are clearly trivial, regardless of whether they are subsequently corrected.
Why must projected misstatements be included on the summary of audit differences?
ISA 530.14 requires the auditor to project sample errors to the population. Recording only the known sample error understates the total accumulated misstatements and distorts the evaluation against materiality. The AFM's 2021 inspection cycle specifically flagged firms that omitted the ISA 530.14 extrapolation from their summary of audit differences.