Corporate Accounting and Auditing · Audit Engagement, Audit Program, Audit Documentation and Audit Evidence

Audit Engagement and Engagement Letter under SA 210

Updated 10 October 2026 · Fact-checked

An audit engagement is the agreement between auditor and client to carry out an audit. Under SA 210, the auditor first checks the preconditions for an audit, then agrees the terms in writing, usually in an engagement letter. The letter records objective, scope, responsibilities and the reporting framework, so both sides share the same understanding.

Understand Audit Engagement and Engagement Letter

An audit engagement is the arrangement under which an auditor agrees to audit an entity's financial statements. Before saying yes, the auditor must be sure the job can be done properly. SA 210, Agreeing the Terms of Audit Engagements, tells you how.

The first step is to establish the preconditions for an audit. There are two main checks. First, the financial reporting framework used to prepare the statements must be acceptable (for example, Ind AS or Accounting Standards notified under the Companies Act, 2013, with Schedule III governing presentation). Second, management must acknowledge and understand its responsibility for three things: preparing the financial statements in line with the framework (including fair presentation where relevant), maintaining internal control needed to prepare statements free from material misstatement, and giving the auditor access to all relevant information, additional information requested, and unrestricted access to people in the entity.

If the preconditions are not present, the auditor should discuss with management. The auditor should not accept the engagement if the framework is unacceptable, or if management does not agree to its responsibilities. Also, the auditor should not accept a non-statutory engagement where management or those charged with governance impose a limitation on scope that would likely lead to a disclaimer of opinion. Where law mandates the audit (as with a company audit under the Companies Act, 2013), the auditor may accept the engagement and then deal with the limitation through modification of the report, such as a qualified opinion or a disclaimer of opinion.

Once the preconditions are met, the auditor agrees the terms with management or those charged with governance and records them in an audit engagement letter (or another suitable written form). The letter prevents misunderstanding about what the auditor will and will not do.

For recurring audits, the auditor assesses whether circumstances require the terms to be revised and whether the entity needs to be reminded of the existing terms. A fresh letter is not always needed each year. Any request to change the terms to a lower level of assurance must be backed by a reasonable justification.

Key rules to remember

Two preconditions for an audit: Acceptable financial reporting framework + management's acknowledgement of its responsibilities; Management's responsibilities: prepare statements per the framework, maintain internal control, give access to information and people.
Core contents of the engagement letter: Objective and scope + auditor's responsibilities + management's responsibilities + framework + expected form of reports; Also mention that the report may differ from expected form if conditions require.
Recurring audits: Assess need to revise terms; remind the entity of existing terms if needed; A new letter is not compulsory every year.
Changes in terms: Change requires reasonable justification; do not agree to a change that lowers assurance without it; If management will not allow continuation of the original engagement, the auditor withdraws where possible and considers reporting obligations.

How to solve Audit Engagement and Engagement Letter questions

Use this order for any question on engagement acceptance or the engagement letter.

1Identify what is asked: preconditions, contents, recurring audit, or change in terms.
2State the acceptance checks: acceptable financial reporting framework and management's acknowledgement of its responsibilities.
3Apply them to the facts given. Note any limitation on scope, unacceptable framework or refusal by management.
4Give the consequence: accept and issue the letter, discuss with management, or decline or withdraw as the law permits.
5List the contents of the letter that are relevant: objective, scope, responsibilities, framework, form of report.
6For recurring audits or changes, state whether terms need revision and whether a justification exists.
7Close with a one-line conclusion that answers the question directly.

Quickest way: Framework, Management, Letter check

When to use it: Use for MCQs and short scenario questions where you must decide whether to accept an engagement or what the letter should say.

Ask: is the framework acceptable?
Ask: does management accept its responsibilities?
Ask: is there any scope limitation?
If all clear, the letter records the terms in writing.
For repeat audits, ask whether anything changed; if not, a reminder may be enough.

Common mistakes in Audit Engagement and Engagement Letter

Saying the auditor prepares the financial statements
Students mix up the auditor's duty to report with management's duty to prepare.
Fix: Write that management prepares the statements and keeps internal control. The auditor gives an opinion.
Treating the engagement letter as a legal necessity for every year
Students assume a new letter is required annually.
Fix: For recurring audits, assess whether terms need revision or a reminder. A new letter is not always required.
Listing only the scope in the letter contents
Students remember the audit objective and forget the rest.
Fix: Include objective, scope, both parties' responsibilities, the framework and the expected form of reports.
Accepting any request to change terms
Students think the client's wishes decide the matter.
Fix: Say a change needs reasonable justification. A request to reduce assurance without one should not be accepted.
Ignoring scope limitations when accepting
Students focus only on the framework precondition.
Fix: Add that the auditor should not accept a management-imposed limitation likely to lead to a disclaimer of opinion in a non-statutory audit. In a statutory audit, the auditor deals with it through report modification.

Worked examples

Example 1

Sundaram Textiles Ltd asks CA Rao to audit its financial statements. Management says it will prepare the statements but will not give the auditor access to the records of a major subsidiary. Advise on acceptance.

Show the solution

Check the preconditions: the framework seems acceptable, but management must also give access to all relevant information and people.
Management has refused access to a major part of the records.
This is a limitation on scope imposed by management and is likely to lead to a disclaimer of opinion.
If the audit is non-statutory, the auditor should discuss the matter with management and should not accept such a limited engagement.
The facts do not say the audit is non-statutory. An audit of a Ltd company is normally statutory under the Companies Act, 2013, so the auditor may not be free to decline.
In that case, the auditor discusses with management and then modifies the report as the limitation requires: a qualified opinion or a disclaimer of opinion.

Answer: Management's refusal of access breaches a precondition and creates a scope limitation likely to result in a disclaimer. If the audit is non-statutory, the auditor should not accept the engagement. If it is statutory (the usual case for a Ltd company), the auditor may not be free to decline. The auditor should discuss with management and then modify the report, by a qualified opinion or a disclaimer, as the limitation requires.

Example 2

List the matters to be included in an audit engagement letter as per SA 210.

Show the solution

Start with the objective and scope of the audit of the financial statements.
Add the responsibilities of the auditor.
Add the responsibilities of management, including preparing the statements, internal control and giving access.
Identify the applicable financial reporting framework.
Mention the expected form and content of reports to be issued, and that the report may differ if conditions require.
Where relevant, include other matters such as fees, arrangements with other auditors or experts.

Answer: The letter should cover objective and scope, the auditor's responsibilities, management's responsibilities, the applicable framework and the expected form of reports, with other matters as relevant.

Exam tips

Learn the two preconditions as a pair: framework and management's responsibilities.
For a 14-mark answer, give the letter contents as bullet points, then apply them to the case.
In MCQs, look for the option that says management prepares the statements and the auditor reports on them.
For recurring audit questions, use the words assess and remind. Avoid saying a new letter is always needed.
If a scenario involves a request to change terms, test it for reasonable justification.
In a scope-limitation scenario, check whether the audit is statutory before saying the auditor should decline.

Practice questions from Audit Engagement, Audit Program, Audit Documentation and Audit Evidence

Audit Engagement and Engagement Letter in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Audit Engagement and Engagement Letter: frequently asked questions

Is an engagement letter mandatory under SA 210?

SA 210 requires the auditor to agree the terms of the engagement with management or those charged with governance. The terms are recorded in an engagement letter or other suitable written form. Where law prescribes the terms, the letter still helps confirm responsibilities.

What are the preconditions for an audit?

The financial reporting framework must be acceptable, and management must acknowledge its responsibilities. These are for preparing the statements, maintaining internal control and giving access to information and people.

Do I need a new engagement letter every year?

Not always. In a recurring audit, the auditor assesses whether the terms need revision and whether to remind the entity of existing terms. A new letter is issued where circumstances call for it.

Can the client change the terms after acceptance?

A change is possible only with reasonable justification. The auditor should not agree to a change that reduces the level of assurance without one.