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Microlesson · 5-min read

Audit Strategy vs Audit Plan, Documentation, and Changes During Audit

## Audit Strategy vs Audit Plan: Key Distinctions

AspectAudit StrategyAudit Plan
NatureBroad, overall approachDetailed implementation document
FocusScope, timing, directionHow strategy will be executed
SequenceEstablished firstDeveloped after strategy
Level of detailLess detailedMore detailed

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## Can Planning Decisions Change?

YES — The auditor shall update and change the overall audit strategy and audit plan as necessary when:

1. Unexpected events occur during the audit

2. Changes in conditions arise

3. Audit evidence obtained differs significantly from what the auditor expected when planning the procedures

> This is not optional — if circumstances change materially, the plan must be revised.

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## Responsibility

The responsibility for establishing the overall audit strategy and planning for the audit lies with the auditor (engagement partner) only.

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## Documentation Requirements

The auditor shall document:

1. The overall audit strategy

2. The audit plan

3. Any significant changes made during the audit engagement to the strategy or plan

4. The reasons for such changes

> The audit trail of why changes were made is as important as the changes themselves.

Worked example

### Example 1

Example — Change in Plan:

Auditor planned limited testing of trade receivables for ABC Ltd based on strong internal controls. During fieldwork, it is discovered that the credit controller left mid-year and controls were not operating for 6 months. This differs significantly from the original plan. The auditor must revise the plan to increase substantive testing of receivables, and must document both the original plan, the change, and the reason for the change.

### Example 2

Example — Documentation:

The engagement file for PQR Ltd must contain: (a) the original audit strategy memo signed by the engagement partner, (b) the detailed audit plan with procedures for each area, and (c) a separate note explaining that the inventory count procedures were extended because the initial count found discrepancies above tolerance — with the reasons documented.

⚠️ Common exam mistakes

  • Stating that the audit plan can remain unchanged once approved — it must be updated when evidence or circumstances change materially.
  • Documenting only the changes but not the reasons for the changes — SA 300 requires both.
  • Thinking responsibility for planning can be delegated to a senior assistant — the engagement partner retains ultimate responsibility.
Reference: SA 300, Documentation — SA 300 — Planning an Audit of Financial Statements (ICAI)
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