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Microlesson · 5-min read

Types of Assurance Engagements – Reasonable vs Limited Assurance

## Types of Assurance Engagements

An assurance engagement is one where a practitioner expresses a conclusion designed to enhance the degree of confidence of intended users (other than the responsible party) about the evaluation/measurement of a subject matter against criteria.

### Two Main Types

FeatureReasonable AssuranceLimited Assurance
Level of assuranceHigherLower
Procedures performedMore extensiveFewer
Conclusion formPositive: "In our opinion…"Negative: "Nothing came to our attention…"
ExampleStatutory audit of financial statementsReview of financial statements

### Three Examples of Assurance Engagements

1. Audit of financial statements — Reasonable assurance; positive opinion

2. Review of financial statements — Limited assurance; negative conclusion

3. Other assurance engagements — e.g., reporting on internal controls, compliance, sustainability reports

> No assurance engagement — reasonable or limited — provides absolute assurance.

Worked example

### Example 1

KST Limited — Identifying the Engagement Type

KST Ltd. appoints CA T to provide an assurance report on financial statements. The engagement gathers sufficient appropriate evidence on the basis of which limited conclusions can be drawn.

Identification: This is a Limited Assurance Engagement (similar to a review engagement).

Two other features of limited assurance engagements:

1. Provides a lower level of assurance than a reasonable assurance engagement.

2. Performs fewer procedures than a reasonable assurance engagement.

⚠️ Common exam mistakes

  • Confusing limited assurance (negative conclusion, fewer procedures) with reasonable assurance (positive opinion, extensive procedures)
  • Thinking any assurance engagement provides absolute assurance — no engagement provides absolute assurance
  • Mixing up conclusion language: reasonable assurance uses positive form ('In our opinion…'), limited uses negative form ('Nothing came to our attention that causes us to believe…')
Reference:
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