From hlb.com.au: Entities preparing to report climate-related information in their annual financial reports must comply with varying assurance requirements established by the Australian Sustainability Reporting Standards.

The Auditing and Assurance Standards Board has phased the assurance process, which transitions from limited assurance in the initial years to reasonable assurance by 2030 for all mandatory climate disclosures.

Organisations are required to include specific sustainability information in their reports, even if some sections do not necessitate review or audit during the initial reporting years.