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Get through your audit · Course 6 · Lesson 6 of 6

What is the difference between an audit, a review and a compilation?

  • 1 min read
  • Checked 29 October 2026
In this course · 6 of 6
Otty, the OCTIS octopus

The short answer

Only an audit meets the Companies Ordinance requirement for most Hong Kong companies. An audit gives reasonable assurance and a formal opinion; a review gives limited assurance, mainly through enquiry and analysis; a compilation gives no assurance at all.

Audit The highest level of assurance: testing records and evidence, third-party confirmations, and a signed opinion. This is the statutory requirement (ss.394, 405).

Review A lower, "limited assurance" engagement under HKSRE 2400, carried out by a practitioner who is not the company's auditor. The procedures do not provide all the evidence an audit would, and the conclusion is in negative form: nothing has come to the practitioner's attention that causes belief the statements are not prepared, in all material respects, under the framework. Often used for interim reports or lender requests.

Compilation Under HKSRS 4410 the accountant uses accounting expertise to collect, classify and summarise information you supply, without testing what lies behind it. No assurance is given and no opinion is expressed. Independence is not required, but any lack of it must be stated in the accountant's report.

Which are acceptable for legal purposes?

  • Company law: audit, unless the company is dormant under s.5 and s.447.
  • IRD: audited statements are expected with the return for companies with gross income, except dormant companies and a few cases.
  • Neither a review nor a compilation (nor management accounts) replaces a statutory audit.

Where reviews and compilations help A bank, investor or manager may want interim numbers; a review or compilation is cheaper and faster, but only as an extra.

HKSRE 2400 (reviews) and HKSRS 4410 (compilations) have been revised by HKICPA since their first issue, so your accountant will apply the edition in force.

Legal basis and sources

General information for business owners, not legal, tax or professional advice. Rules change, so check the sources or ask a licensed professional before you act.

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    What is the difference between an audit, a review and a compilation? | OCTIS