AASB S2 Mandatory Climate-Related Financial Disclosure

Getting ready for Mandatory Climate-Related Financial Disclosure

The mandatory Climate-Related Financial Disclosure was passed into law by the Australian Parliament in September 2024. Starting from 1 January 2025, large Australian entities and NGER reporters will have to disclose their climate risks and opportunities through annual sustainability reports.

The mandatory climate reporting standards will be implemented in a three-phase approach, starting with entities meeting the Group 1 threshold.

Understand Your ASRS Requirements and Gain Clarity

Australian Sustainability Reporting Standards (S1 & S2)

To help companies report accurately, the Australian Accounting Standards Board (AASB) has published the Australian Sustainability Reporting Standards AASB S1 and AASB S2:

  • AASB S1: General Requirements for Disclosure of Sustainability-related Financial Information – voluntary standard

  • AASB S2: Climate-related Disclosures – mandatory standard

These standards are largely aligned with the International Sustainability Standards Board (ISSB) standards IFRS S1 and S2.

What needs to be reported?  

Companies will need to disclose:

  • Governance: the governance processes, controls and procedures the entity uses to monitor and manage climate-related risks and opportunities

  • Strategy: the approach the entity uses to identify and manage climate-related risks and opportunities,

  • Risk management: the processes the entity uses to identify, assess, prioritise and monitor climate-related risks (physical and transition risks) and opportunities, and

  • Metrics and targets: the entity’s performance in relation to climate-related risks and opportunities, including progress towards any targets the entity has set

Importantly, the sustainability report needs to align to financial reporting and undergo assurance. Users of these reports need to be able to understand how an entity measures, monitors and manages its significant climate-related risks and opportunities.

Getting Started

We recommend that companies be proactive and start preparing early for these disclosures.

This may include understanding when the reporting requirements may apply to you, conducting a gap analysis, building internal capability, bringing finance and sustainability functions together and creating a roadmap to continuously improve reporting.  

A Readiness Assessment would be one place to start, and could involve one or more of the following:

  • Rationalising disclosure requirements for your organisation

  • A climate-related material discovery workshop to identify what your organisation already has in place and who in your organisation may be able to provide existing material

  • Educating and empowering your internal stakeholders with training sessions relevant to your organisation’s specific disclosure obligations

  • A review of your organisation’s existing related material and its applicability to the disclosure requirements, i.e. a gap analysis of existing material

  • Presentation of the results of this review to key internal stakeholders, including a brief discussion of any next steps

How Greenbase Can Help

Readiness Assessment or Gap Analysis


Planning for Disclosure / Roadmap



GHG Emissions Estimates — Scope 1, 2 and 3 Carbon Accounting


Scope 3 Materiality Assessments


Regular Tracking (monthly/quarterly) of GHG Emissions Estimates


Climate Change Risk Assessments


Scenario Analysis


Identification of Risks and Opportunities


Carbon Management — including transition planning, GHG emission projections and scenario modelling


Documentation Support — e.g. Basis of Preparation


Customised Education


Audit Support