Eight engagement letters CAs actually issue – statutory audit, tax audit, GSTR-9C assistance, GST certification, internal audit, ITR and compilation, special-purpose certificates, and the recurring-audit reminder – drafted to the current standards and generated in your browser. Every letter carries the SA 210 essentials (objective, scope, both sides’ responsibilities, the reporting framework, the expected reports), the statutory-audit letter adapts itself to CARO and IFC applicability and the audit-trail rule, the tax-audit letter follows the Revised 2025 Guidance Note, and the GST letter knows the audit was abolished. Fill the form, watch the letter build itself, download in Word. Nothing is uploaded – it all happens on your device.
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What an engagement letter must contain under SA 210
| Element | What it covers |
|---|---|
| Objective and scope | The audit of the financial statements, conducted per the Standards on Auditing and the governing statute |
| Auditor’s responsibilities | Reasonable assurance, professional judgment and scepticism, and the inherent-limitations warning – some material misstatements may go undetected even in a properly performed audit |
| Management’s responsibilities | The premise: preparing the financial statements per the framework, the internal control needed for that, and unrestricted access to information and people |
| The reporting framework | Named expressly – AS under the 2021 Rules or Ind AS under the 2015 Rules |
| Expected reports | The section 143(3) report, CARO where applicable, Rule 11 matters including the audit trail, IFC opinion where applicable – with the caveat that form and content may change |
For recurring audits a fresh letter is not mandatory every year – but SA 210 expects the auditor to revisit the terms and either revise them or remind the client in writing when circumstances change. That is what the reminder-of-terms letter in the generator is for.
Engagement letters – FAQs
Is an engagement letter mandatory for a statutory audit?
Yes – SA 210 requires the terms of the engagement to be agreed and recorded in writing before the audit begins, covering the objective and scope, both sides’ responsibilities, the reporting framework and the expected reports. The letter also protects the auditor: it is the reference point when disputes arise about who was responsible for what.
What is the “premise” of an audit in SA 210?
The precondition that management acknowledges its own responsibilities: preparing the financial statements under the applicable framework, maintaining the internal control necessary for them to be free of material misstatement, and giving the auditor complete access to records, information and people. If management will not accept these, the auditor should not accept the audit.
Do I need a new engagement letter every year for the same client?
Not necessarily. For recurring audits SA 210 permits continuing on the existing terms, but the auditor should assess annually whether revision is needed – and send a reminder of the terms in writing where appropriate. Triggers for a fresh letter include changed management or ownership, a changed framework, revised terms, or signs the client misunderstands the scope. The generator includes a reminder-of-terms letter for exactly this.
What extra content does a company statutory audit letter need?
Reference to the section 143(3) reporting matters, CARO 2020 where the company is not exempt, the Rule 11 matters including the audit-trail (edit log) statement, the internal financial controls opinion where applicable, the section 143(12) fraud-reporting duty as an exception to confidentiality, fees under section 142, and the peer review / NFRA access reality of working papers in India.
Who prepares Form 3CD – the auditor or the assessee?
The assessee. The statement of particulars in Form 3CD is management’s responsibility to prepare and authenticate; the tax auditor examines it and reports whether the particulars are true and correct. The engagement letter should say this in terms – it is the single most useful sentence in the letter when a clause goes wrong later.
Is there still a GST audit engagement letter?
Not for the old statutory GST audit – section 35(5) of the CGST Act was omitted and GSTR-9C is self-certified by the taxpayer since FY 2020-21. What a CA issues now is either an engagement to ASSIST in preparing GSTR-9 and 9C (a non-assurance engagement on SRS 4410 principles, with no opinion expressed) or a certification engagement for specific GST purposes such as refunds. The generator has both.
What should an ITR-filing engagement letter say?
That the work is a compilation under SRS 4410 (Revised): the practitioner assists in preparing the financial information and the return from what the client provides, without auditing or verifying it, and expresses no opinion. The client owns the accuracy and completeness of the information, reviews the draft, and e-verifies the return. Putting this in writing is the practitioner’s best protection.
Does an engagement letter need a UDIN?
No – UDIN attaches to certificates, audit reports and other attest documents, not to the engagement letter itself. The statutory-audit letter may however tell the client that engagement particulars will be shared with ICAI when the UDIN is generated on the report.
Who signs the engagement letter and when?
The partner or proprietor signs on the firm’s letterhead, dated before audit work begins; the client’s authorised person – typically a Board-authorised director or the CFO – signs and returns the acknowledgment copy. For joint audits, one common letter covering all joint auditors is the practice under SA 299.
Can I use these letters as they are?
They are complete working drafts built on the current standards, but every engagement has its own facts – entity type, framework, exemptions, special terms. Review each paragraph, adapt what needs adapting, place it on your letterhead, and treat the generator as the strong first draft it is meant to be.
Method notes: letters drafted against SA 210 and its ICAI Implementation Guide (2022), SA 299 (Revised), the Guidance Note on Tax Audit u/s 44AB (Revised 2025), SRS 4410 (Revised), the Guidance Note on Reports or Certificates for Special Purposes (Revised 2016), the framework of the Standards on Internal Audit, and the Companies Act 2013 including Rule 11 and the audit-trail requirements – as they stand in July 2026. All wording is original; nothing is reproduced from ICAI publications. Drafts are generated entirely in your browser and nothing you type leaves your device. Review by the signing partner remains essential. Reviewed by a practising CA; updated July 2026.