AASB S2025-1: Amendments to GHG emissions disclosures
AASB S2025-1 Amendments to Greenhouse Gas Emissions Disclosures, issued by the Australian Accounting Standards Board (AASB) to amend AASB S2 Climate-related Disclosures (AASB S2)
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We have a team of market-leading specialists who understand the rapidly developing landscape of sustainability reporting and will work closely with you to navigate through the process of collating the right information, building appropriate processes and controls around the data required to support disclosures, and how to present the required information both in your report and in documentation for your auditors.
From 1 January 2025, mandatory sustainability reporting has been a requirement in Australia and is being phased in over the following three years based on entity size. Most mid-market entities will be required to prepare an annual sustainability report.
The sustainability report must be compliant with the new standard AASB S2 Climate-related Disclosures. The standard provides decision-useful information to investors about the climate-related risks and opportunities that could reasonably be expected to affect an entity’s cashflows, access to finance, or cost of capital over the short, medium, and long term.
Section 292A of the Corporations Act dictates who is required to prepare an annual sustainability report.
This applies to entities that prepareannual financial reports under Chapter 2M of the Corporations Act and meet one of the three tests below:
An entity at financial year end meeting at least two of the three thresholds of consolidated revenue, consolidated assets, or FTE employees shown in the table below.
An entity is a registered corporation under the NGER Act, or an entity required to register under the NGER Act.
A registered scheme, registrable superannuation entity, or retail corporate collective investment vehicle (CCIV), with consolidated assets in excess of the threshold in the table below.
| Reporting period commencing on or after | Entities meeting at least 2 of the 3 criteria | NGER Registered entities | Registered schemes, registrable superannuation entities & retail CCIVs | ||
|---|---|---|---|---|---|
| Consolidated revenue | Consolidated gross assets | Employees (FTE) | |||
|
Start date: 1 January 2025 Group 1
|
$500m or more
|
$1b or more
|
500 or more
|
Above NGER publication threshold
|
N/A
|
|
1 July 2026 Group 2
|
$200m or more
|
$500m or more
|
250 or more
|
All other NGER reporters
|
$5b of consolidated assets or more
|
|
1 July 2027 Group 3
|
$50m or more
|
$25m or more
|
100 or more
|
N/A
|
N/A
|
Our approach to sustainability reporting is an education-first approach. Every proposed workstream incorporates education and training components to ensure your team is being upskilled. An engagement with our firm offers:
Your team will be educated throughout the process, so the detail will stay with them.
Of relevant pre-existing sustainability work in our procedures, subject to a review and gap assessment.
Included as part of our initial kick-off and at the start of each new phase of work.
And can be recorded and revisited in your own time to build up your internal understanding and awareness of different parts of the reporting process.
When your business commences its sustainability reporting journey, in many cases the initial learning curve can be steep. Our education-first approach means we don’t overcomplicate your reporting; instead we focus only on what is required and for you to be assurance ready, nothing further.
Our team is made up of some of the nation’s leading technical specialists who can provide unrivalled expertise in the interpretation and implementation of Australian Sustainability Reporting Standards (ASRS), including AASB S2 Climate-related Disclosures.
Staying on top of requirements and ‘what’s next’ can be daunting. Our approach provides regular, jargon-free communication to ensure your needs are met and rapport is established from the start. Our sustainability reporting team works on a national level, supporting clients across Australia, and able to collaborate in-person when required.
We are one of the few firms that has expertise across global sustainability reporting requirements and understands how to leverage work done in other countries (e.g. CSRD/ESRS in Europe, Californian Climate reporting, UK CFD reporting). We know the existing gaps and differences from work that may have been done for alternative purposes overseas.
We understand the importance of preparing for a sustainability report in a manner that supports assurance and provides relevant and decision-useful information to primary users (existing and potential investors, lenders and creditors). Get in contact with our sustainability experts to learn more about how we can help you develop strategies, meet the standards, and produce rigorous reporting.

This guide unpacks the sustainability reporting requirements of the Corporations Act, the new standard AASB S2 Climate-related Disclosures, and highlights key considerations, frequently asked questions, and practical application issues encountered in preparing a Sustainability Report.
Accompanying the guide is a practical walkthrough video, which covers its key sections and demonstrates how organisations can use it as a reference tool when preparing for mandatory sustainability reporting.

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Grant Thornton is part of the IFRS Sustainability Alliance as part of the GTI Network and has access to further resources should they be required. |
Identify potential climate-related risks and opportunities.
Identify material information for disclosure.
Develop a transition plan to strategically respond to the low carbon transition.
Learn how to conduct a greenhouse gas inventory and document the key judgements made.
Collect GHG activity data and compile a scope 1, 2 and 3 inventory.
Develop a fit-for-purpose climate scenario analysis framework for assessing climate resilience.
Develop a toolkit for quantifying your anticipated financial effects, creating a repeatable approach.
Compile draft AASB S2 disclosures and document significant judgements.
Compile voluntary sustainability disclosures with reference to regulatory and risk-related considerations.
Establish processes to monitor climate-related targets that align with your strategic ambition and relevant frameworks.
Enhance your internal capabilities with tailored sustainability training for everyone from your Board to your practitioners.
Ascertain the availability of information and readiness to compile information to produce required disclosures.
Our education-first approach combines technical expertise with pragmatic guidance, helping organisations navigate mandatory climate-related disclosures, strengthen reporting frameworks, and prepare for assurance with confidence.
With specialists located across Australia and experience supporting organisations across a wide range of industries, we help simplify the reporting process and deliver sustainability reporting outcomes that are fit-for-purpose, efficient and sustainable over the long term.
Contact our team to learn how we can support your sustainability reporting journey.
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In the meantime, if you have any questions, please don't hesitate to contact us via communications@au.gt.com.
AASB S2025-1 Amendments to Greenhouse Gas Emissions Disclosures, issued by the Australian Accounting Standards Board (AASB) to amend AASB S2 Climate-related Disclosures (AASB S2)
The purpose of this Alert is to draw attention to the National Climate Risk Assessment report (or NCRA), delivered by the Australian Climate Service on 15 September 2025.
The purpose of this Alert is to draw attention to the Prime Minister’s announcement of Australia’s new 2035 greenhouse gas emissions reduction target and path to net zero by 2050. The new target was announced on 18 September 2025. The new target follows the independent advice of the Climate Change Authority and is supported by the release of a comprehensive Net Zero Plan, along with 6 sectoral decarbonisation plans.
Directors already have the duty under the Corporations Act to exercise their powers with the care and diligence that a reasonable person would exercise in the circumstances, are applied to sustainability reporting. ASIC Regulatory Guide RG 280 Sustainability Reporting confirms that in discharging their duty of care and diligence, Directors of reporting entities should consider the extent to which climate-related risks could reasonably be expected to affect the reporting entity’s prospects. Directors of reporting entities should require the reporting entity to establish:
One frequently asked question is whether entities preparing to report are now required to have a sustainability officer or climate sub-committee or working group. It is important to recognise that AASB S2 does not impose any new governance requirements on entities. Rather it requires the entity to disclose its existing governance practices in relation to the governance, management and oversight of climate-related risks and opportunities. Developing governance over climate-related risks and opportunities is an integral part of overall good corporate governance. As such, in our view, entities should look to integrate their governance of climate-related risks and opportunities into their existing corporate governance frameworks, especially at a Board level. That said, in our experience, many entities may consider this as an opportunity to also reassess their existing governance processes and structures which may not have been updated recently.
Unless another Australian Sustainability Reporting Standard permits or requires otherwise, an entity shall disclose comparative information in respect of the preceding period for all amounts disclosed in the reporting period. If such information would be useful for an understanding of the climaterelated financial disclosures for the reporting period, the entity shall also disclose comparative information for narrative and descriptive climate-related financial information. However, an entity is not required to provide the disclosures specified in AASB S2 for any period before the date of initial application.
In the context of climate-related financial disclosures, information is material if omitting, misstating or obscuring that information could reasonably be expected to influence decisions that primary users of general purpose financial reports make on the basis of those reports, which include financial statements and climate-related financial disclosures and which provide information about a specific reporting entity. (AASB S2 Appendix D.18)
Preparers familiar with Australian Accounting Standards will notice the concept of materiality in AASB S2 is almost identical to the language used for the concept of materiality in the financial accounting standards, which was the intention of the ISSB.
As with financial accounting, materiality is an entity-specific concept. Assessing whether information could reasonably be expected to influence the decisions made by primary users requires consideration of the characteristics of those users and of the entity’s own circumstances.
Consequently, in the process of identifying material information about an entity’s climate-related risks and opportunities, it may be helpful for an entity to clearly articulate who their primary users are, and what decisions they may be making. It is also important to remember that climate-related financial disclosures are intended to meet common information needs of primary users. When looking at individual primary users, an entity may find that they have different, and sometimes even conflicting, information needs and desires, which may also evolve over time.
In identifying the primary users of a general-purpose financial report, the AASB has introduced specific Australian paragraphs specific to not-for-profit entities. A not-for-profit entity is required to refer to the definitions of “general purpose financial reports” and “primary users of general purpose financial reports” specified in the Framework for the Preparation and Presentation of Financial Statements when applying AASB S2.
Examples of decisions of primary users that relate to providing resources to for-profit and not-for-profit entities is shown below.
For-profit entity
(AASB S2 Appendix D.B14)
Not-for-profit entity
(AASB S2 Appendix D.AusB14)
An entity’s climate-related risks and opportunities affect the whole of the business and not just an individual team. Therefore, in our view, it is important for the preparation for reporting to involve multiple stakeholders across the business. As an example, this might include:
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