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IAASB: Extracts from ISSA 5000 for Limited and Reasonable Assurance Engagements
- 19 August 2025
- Sustainability Reporting
- South African Accounting Academy
Summary:
The Staff of the IAASB has released Extracts from ISSA 5000 for both Limited and Reasonable Assurance Engagements, 2 new resources to further support jurisdictions and stakeholders in adopting and implementing the International Standard on Sustainability Assurance (ISSA) 5000, General Requirements for Sustainability Assurance Engagements.
Article:
These extracts of the ISSA 5000 feature the material that is relevant to both limited assurance and reasonable assurance engagements. They were prepared in response to requests from stakeholders to be able to separately view the material.
In response to stakeholder requests, the IAASB has prepared reference extracts containing only the material in ISSA 5000 relevant to limited assurance engagements and, separately, reasonable assurance engagements. These extracts are designed to help regulators, standard setters, and other stakeholders more easily identify the requirements and application material most relevant to their jurisdictional decisions. They do not amend or override ISSA 5000, the authoritative text of which remains the full standard.
This publication forms part of a package of guidance and support for practitioners, which will be complimented by a webinar series in Q3 and Q4 2025.
In addition, the IAASB has updated the adoption information on its website, reflecting the growing global momentum toward adoption of ISSA 5000.
Together with previously published materials, these publications underscore the IAASB’s commitment to supporting adoption and implementation of ISSA 5000 and fostering high-quality, globally consistent sustainability assurance practices.
Access the adoption information, as well as previously published materials, on the IAASB website at https://www.iaasb.org/focus-areas/understanding-international-standard-sustainability-assurance-5000
Click here to download the 2 Extracts documents (of 193 pages each):
- Extracts from ISSA 5000 relevant to limited assurance https://ifacweb.blob.core.windows.net/publicfiles/2025-08/IAASB-ISSA-5000-Extract-Limited-Sustainability-Assurance-Engagements.pdf
- Extracts from ISSA 5000 relevant to reasonable assurance https://ifacweb.blob.core.windows.net/publicfiles/2025-08/IAASB-ISSA-5000-Extract-Reasonable-Sustainability-Assurance-Engagements.pdf
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 – including Sustainability Assurance, and thus you need knowledge of relevant standards that apply as well as when they become effective.
- Failure to adhere to ISAs may be interpreted as negligence and you could be held liable.
- As an auditor, independent reviewer and sustainability assurance practitioner, you should be aware of new standards and publications (like guidance and support materials) issued by the standard-setting bodies, e.g. the IAASB.