Australian Government
Auditing and Assurance Standards Board
Monday, January 19, 2026
The AUASB has issued ASSA 2025-10. ASSA 2025-10 amends ASSA 5010 to require the approach for the phasing in of assurance for Group 1, 2 and 3 entities to be applied for voluntary sustainability reports under the Corporations Act 2001 (the Act).
For example, entities that commence voluntary reporting under the Act at the same time as reporting commences for Group 1 entities will be subject to the same phasing in of assurance as Group 1 entities.
Recent amendments to the Act allow entities to make voluntary sustainability reports under the Act for years commencing 1 January 2025 to 31 December 2027 (see Schedule 4, Part 1, Division 2 of the Treasury Laws Amendment (Strengthening Financial Systems and Other Measures) Act 2025).
An updated assurance phasing in diagram can be found on the AUASB’s Sustainability Assurance webpage.
A version of ASSA 5010 incorporating the changes made by ASSA 2025-10 will be available on the AUASB website in coming days.