Use of external experts narrow-scope amendments

The IAASB are proposing targeted amendments to audit, assurance and related services standards in relation to the use of external experts. 

This will ensure interoperability of those standards with the requirements in the code of ethics relating to the use of external experts.

Background

The proposed introduction of requirements to the code of ethics in relation to using the work of external experts, requires narrow-scope amendments to certain  standards. These amendments are to ensure that those standards and the code of ethics can continue to be effectively applied together when the practitioner uses the work of an external expert.

The exposure draft proposes targeted amendments to:

  • ISA 620 Using the Work of an Auditor’s Expert
  • ISRE 2400 Engagements to Review Historical Financial Statements
  • ISAE 3000 (Revised) Assurance Engagements Other Than Audits or Reviews of Historical Financial Information
  • ISRS 4400 Agreed-Upon Procedures Engagements

The proposed amendments include:

  • A requirement to consider relevant ethical requirements when auditor uses an external expert (ISA 620)
  • New application material, including that relevant ethical requirements may prohibit use of work of external expert if not competent, capable or objective (ISA 620 and other standards)

Exposure draft

The IAASB’s exposure draft is here.

We seek comments on the questions on page 15-16. Furthermore, any comments on benefits or costs/risks of adoption of this standard in New Zealand or any other comments relating to adoption in New Zealand are also welcome.

How to provide feedback

You can:

The XRB seeks your feedback by 10 July 2025.

All submissions will be published on the XRB website unless confidentiality is requested. If you object to the release of any information in your submission, please identify the specific parts and the reasons under the Official Information Act 1982. We reserve the right not to publish defamatory submissions.  Submissions are subject to the Official Information Act 1982 and the Privacy Act 2020. The XRB will handle personal information in accordance with these Acts.