# SA 210 — Revision in Terms of Engagement & Reminders in Recurring Audits

## Why this matters

SA 210 deals with agreeing the terms of audit engagements. Once an engagement letter exists, two situations may force the auditor to revisit it:

1. A fresh circumstance during a current engagement may require revising the existing terms.

2. In a recurring audit, the auditor must judge whether the entity needs to be reminded of existing terms, or whether the terms should be revised.

## Two-bucket framework

### Bucket A — Triggers to REVISE the Terms of Engagement (current engagement)

These are signs that what was originally agreed no longer fits:

Any indication that the entity misunderstands the objective and scope of the audit — e.g., the client thinks the audit will detect every fraud.
Any revised or special term of engagement requested by the client.
A recent change of senior management — new management may have different expectations.
A significant change in ownership — new owners may renegotiate scope.

### Bucket B — Triggers to REVISE / REMIND in Recurring Audits

In a recurring audit, the auditor reuses the prior engagement letter unless something has changed. Reminders/revisions become necessary when there is:

A significant change in the nature or size of the entity's business.
A change in Legal & Regulatory (L&R) requirements applicable to the entity.
A change in the Financial Reporting Framework (FRF) adopted for preparing the FS.
A change in other reporting requirements (e.g., new CARO clauses, group reporting).

## Memory hook

Think "MUSO" for revising terms (Misunderstanding, Updated/special term, Senior mgt change, Ownership change) and "BLRFO" for recurring audits (Business size, L&R, Reporting framework, Other reporting requirements).

## Practical takeaway

If any Bucket A trigger appears mid-engagement — pause and revise the engagement letter. In a recurring audit, before commencing the year's work, run through Bucket B; if nothing has changed, a brief written reminder of existing terms suffices; if something has changed, a fresh engagement letter is required.

Worked example

### Example 1

Example 1 — Misunderstanding of scope: During Year 2 of an audit, the new CFO writes saying he expects the auditor to verify 100% of inventory and to certify the absence of fraud. This is a Bucket A trigger (entity misunderstands objective and scope). The auditor must revise the engagement letter, clearly restating that the audit is conducted on a test-check basis and provides reasonable, not absolute, assurance.

### Example 2

Example 2 — Change in FRF in a recurring audit: ABC Pvt Ltd, a private company that was reporting under Accounting Standards, has now crossed the net worth threshold and must apply Ind AS from the current year. This is a Bucket B trigger (change in FRF). The auditor should issue a fresh engagement letter rather than merely reminding the entity of the old terms.

### Example 3

Example 3 — Reminder sufficient: A long-standing audit client has no change in business, ownership, management, FRF or L&R requirements. The auditor sends a brief letter reminding the entity that the original engagement terms continue to apply for the current year — no revision needed.

⚠️ Common exam mistakes

Treating ALL changes (e.g., a junior staff change at the client) as triggers — only senior management changes matter.
Issuing a fresh engagement letter every year in recurring audits — a reminder is enough unless a Bucket B trigger exists.
Forgetting that a change in L&R or FRF is itself a sufficient trigger even if the business is unchanged.
Confusing 'revision of terms' (Bucket A — current engagement) with 'recurring audit triggers' (Bucket B) in exam answers.

Reference: — SA 210 - Agreeing the Terms of Audit Engagements (ICAI)

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SA 210 - Revision in Terms of Engagement / Reminder in Recurring Audits

Worked example

⚠️ Common exam mistakes