Final Australian standards on sustainability assurance and the relevant ethical requirements approved

The following Australian Standards on Sustainability Assurance (ASSA) and the Relevant Ethical Requirements were approved by the Auditing and Assurance Standards Board (AUASB) on 28 January 2025.

• ASSA 5010: Timeline for Audits and Reviews of Information in Sustainability Reports under the Corporations Act 2001(‘ASSA 5010’)
• ASSA 5000: General Requirements for Sustainability Assurance Engagements (‘ASSA 5000’)

The approval of the standards allows registered company auditors to finalise their assurance methodology and software, so they are ready to provide assurance over sections of the first mandatory sustainability reports for financial years ending 31 December 2025. 

ASSA 5010 specifies the extent to which a sustainability report is required to be subject to limited assurance (‘reviewed’) or audited during the period from 1 January 2025 to 30 June 2030. Key highlights can be found here.

Are you ready for reporting and assurance?

Grant Thornton has a team of sustainability reporting and assurance specialists who understand the intricacies of the AASB S2 reporting requirements and the ASSA 5000 assurance requirements. Subject to the ethical requirements under part 5 of the IESBA Code, our team can work closely with you to navigate through the process of getting ready for assurance, including:

• sustainability-related and climate-related risk and opportunity guidance;
• reporting gap identification;
• greenhouse gas emissions guidance;
• climate-related scenario analysis
• sustainability and climate reporting support;
• training and education;
• assurance readiness; and
• voluntary sustainability assurance.

Learn more about how our ESG, sustainability and climate reporting services can help you

Visit our ESG, sustainability and climate reporting page