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IAASB: new 2025 Handbook
- 18 September 2025
- Audit
- South African Accounting Academy
Summary:
The International Auditing and Assurance Standards Board (IAASB) has released the 2025 edition of its Handbook of International Quality Management, Auditing, Review, Other Assurance, and Related Services Pronouncements – including the new volume containing the International Standard on Sustainability Assurance (ISSA) 5000, General Requirements for Sustainability Assurance Engagements.
Article:
For the first time, the 2025 Handbook comprises 5 volumes to improve user experience and accommodate new as well as revised standards.
The IAASB Handbook comprises the following 5 volumes:
- Volume 1 (1046 pages): International Auditing Practice Notes (IAPNs), International Standards on Auditing (ISAs), and International Standards on Quality Management (ISQMs) – download at https://ifacweb.blob.core.windows.net/publicfiles/2025-09/IAASB-2025-Handbook-Volume-1.pdf
- Volume 2 (130 pages): International Standard on Auditing for Audits of Financial Statements of Less Complex Entities (the ISA for LCE) – download at https://ifacweb.blob.core.windows.net/publicfiles/2025-09/IAASB-2025-Handbook-Volume-2.pdf
- Volume 3 (178 pages): International Standard on Sustainability Assurance (ISSA) 5000, General Requirements for Sustainability Assurance Engagements – download at https://ifacweb.blob.core.windows.net/publicfiles/2025-09/IAASB-2025-Handbook-Volume-3.pdf
- Volume 4 (302 pages): International Standards on Assurance Engagements (ISAEs), International Standards on Review Engagements (ISREs), and International Standards on Related Services (ISRSs) – download at https://ifacweb.blob.core.windows.net/publicfiles/2025-09/IAASB-2025-Handbook-Volume-4.pdf
- Volume 5 (69 pages): A Framework for Audit Quality: Key Elements that Create an Environment for Audit Quality and the International Framework for Assurance Engagements – download at https://ifacweb.blob.core.windows.net/publicfiles/2025-09/IAASB-2025-Handbook-Volume-5.pdf
The following standards, which are not yet effective, are included in the 2025 Handbook:
- ISA 240 (Revised), The Auditor’s Responsibilities Relating to Fraud in an Audit of Financial Statements
- ISA 570 (Revised 2024), Going Concern
- ISSA 5000, General Requirements for Sustainability Assurance Engagements
Click here to access the webpage to download all 5 Volumes of the new 2025 Handbook:
Relevance to Auditors, Independent Reviewers & Accountants:
- As an auditor and independent reviewer, you need to comply with International Standards on Auditing and other Assurance Services, and thus you need knowledge of newly revised standards that are approved as well as when they become effective.
- Failure to adhere to ISAs may be interpreted as negligence and you could be held liable.
- Auditors, Independent Reviewers and Accountants should be aware of the latest versions of handbooks containing standards issued by regulators and standard-setting boards, such as the IAASB Handbook.