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Canadian Auditing Standards

AASB Exposure Draft – Proposed Revisions to the Canadian Auditing Standards for Audit Evidence and Risk Response

Summary

Advances in technology are changing how entities use information to prepare financial statements and how auditors perform their work. These developments have also raised questions about how auditors apply professional skepticism and determine whether they have obtained sufficient appropriate audit evidence. In addition, regulators and audit oversight authorities have raised concerns about the auditor’s work effort relating to internal controls.

In response, the International Auditing and Assurance Standards Board (IAASB) issued  Exposure Drafts (collectively referred to as the Audit Evidence and Risk Response project) comprising:

  • Proposed International Standard on Auditing (ISA) 330, The Auditor’s Responses to Assessed Risks;
  • Proposed ISA 500, Audit Evidence;
  • Proposed ISA 520, Analytical Procedures; and
  • proposed conforming and consequential amendments to International Standards on Quality Managements (ISQMs) and other ISAs.

In addition, the IAASB’s Exposure Drafts also includes Explanatory Memoranda, which provides background to, and an explanation for, the proposed revisions.

The AASB plans, subject to comments received following exposure, to adopt proposed ISA 330 (Revised), ISA 500 (Revised), ISA 520 (Revised), and the proposed conforming and consequential amendments to other ISAs. The result would be revised respective Canadian Auditing Standards (CASs).

We want to hear from you. Share your feedback on this Exposure Draft and help to influence these international standards.

Staff Contact(s)

Karen DeGiobbi, CPA, CA Director, Auditing and Assurance Standards Board

International resources

  • IAASB Exposure Draft, including Explanatory Memoranda
  • IAASB webinar related to the Exposure Draft (webinar series expected to be available September-October 2026)
  • IAASB support videos related to the Exposure Drafts (series of videos expected to be available August-September 2026)

Background

The project began with proposed revisions to ISA 500, for which the IAASB issued an Exposure Draft in October 2022. Feedback to that Exposure Draft indicated that the proposed revisions could do more to address issues related to audit evidence and technology used in the audit. Subsequently, information gathered also highlighted the close interrelationship between audit evidence and the auditor’s response to assessed risks, and called for ISA 500, ISA 330, and ISA 520 be revised concurrently. In response, the IAASB expanded the project to revise the three standards together as an integrated project. The IAASB approved the new project proposal in December 2024.