Australia
Voluntary

AASB S1: Australian's sustainability-related financial disclosures

Published on
27 March 2025
Contributors
Afonso Firmo
Co-founder and Director
Francesca Castro
Research and Content
Macarena Massuh
Sustainability Enablement
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The Australian Accounting Standards Board (AASB) has issued AASB S1, a voluntary guideline for disclosing sustainability-related financial information applicable to annual reporting periods from January 1, 2025. 

While not mandatory, this standard provides a framework for entities choosing to report on a broad range of sustainability topics beyond climate. It aligns with the international IFRS S1 but is specifically for application within Australia, offering principles and requirements for the content and presentation of such disclosures to aid users in their financial decisions. The AASB has also issued a separate, mandatory standard, AASB S2, focusing specifically on climate-related financial disclosures.

Key Concepts to understand about AASB S1

Voluntary Application

Understand that AASB S1 is a voluntary standard in Australia, meaning entities can choose whether or not to apply it, unlike the mandatory AASB S2 on climate-related disclosures. However, if an entity claims compliance, it must apply all paragraphs.

Primary Users

Before you issue your report or carry any work related to AASB S1 it is benefitial to Identify who the primary users of sustainability-related financial reports are (investors, lenders, and other creditors) and the types of decisions they make based on this information (providing resources to the entity).

Materiality

As part of AASB S1 your organisation needs to define materiality in the context of sustainability-related financial disclosures. Recognise that information is material if omitting, misstating, or obscuring it could reasonably be expected to influence the decisions of primary users. Understand that materiality is entity-specific and considers both quantitative and qualitative factors.

Sustainability-related Risks and Opportunities

Understand that the AASB S1 standard focuses on risks and opportunities that could reasonably be expected to affect an entity's cash flows, access to finance, or cost of capital over the short, medium, or long term, collectively referred to as affecting the entity's prospects.

There is an very strong connection to financial disclosures and that lenses should be applied when identifying risks and opportunities.

Value Chain

Reporting organisations need to define the value chain and understand its importance in identifying sustainability-related risks and opportunities. It is key to recognise that an entity's dependencies and impacts extend beyond its direct operations to its broader value chain.

General Purpose Financial Reports

Understand that sustainability-related financial disclosures are part of an entity's general purpose financial reports, which also include financial statements.

There is an importance of connections between sustainability-related financial disclosures themselves (governance, strategy, risk management, metrics and targets) and between these disclosures and the related financial statements.

Four Pillars of Disclosure

Similar to AASB S2 (the climate reporting), AASB S1 has the four key areas for disclosure required by the standard:

  • Governance: Who, how, and when leaders take responsability over sustainability matters.
  • Strategy: How sustainability-related risks and opportunities affect the entity's business model, value chain, strategy, decision-making, and financial performance over different time horizons.
  • Risk Management: Processes used to identify, assess, prioritize, and monitor sustainability-related risks and opportunities, and how these are integrated into the overall risk management process.
  • Metrics and Targets: Performance in relation to sustainability-related risks and opportunities, including progress towards set targets.

How does AASB S1 differ from AASB S2

AASB S1 acts as an overarching, voluntary standard for sustainability-related financial information, providing a general framework and principles. AASB S2 is a specific, mandatory standard focused solely on climate-related disclosures, and it draws upon and is informed by certain elements of AASB S1. 

Here's how they differ:

  • AASB S1 is a general, voluntary standard, while AASB S2 is specific and mandatory for climate-related disclosures. AASB S1, titled "General Requirements for Disclosure of Sustainability-related Financial Information," provides a comprehensive framework for reporting on a wide range of sustainability topics, including but not limited to climate. In contrast, AASB S2, titled "Climate-related Disclosures," is currently the only mandatory Australian Sustainability Reporting Standard, focusing specifically on climate-related financial disclosures.

Climate and Sustainability are two different things in the eyes of AASB

  • AASB S2 incorporates content from AASB S1. To function as a standalone mandatory standard for all climate-related financial disclosures, AASB S2 includes selected content from AASB S1 that the Australian Accounting Standards Board (AASB) deemed necessary. This ensures that AASB S2 contains the fundamental principles and conceptual underpinnings required for effective climate-related reporting, drawing from the broader framework established in AASB S1. This incorporated content is located in Appendix D of AASB S2.

  • AASB S1 can serve as guidance for applying AASB S2. Entities required to comply with the mandatory AASB S2 are not also required to comply with the voluntary AASB S1. However, these entities may refer to AASB S1 for guidance when preparing their climate-related disclosures under AASB S2. This suggests that the more general principles and requirements outlined in AASB S1 can provide a helpful context and further explanation for the specific requirements of AASB S2.

  • Entities may voluntarily apply AASB S1 in addition to the mandatory AASB S2. While compliance with AASB S1 is not required, entities can choose to apply it in preparing their broader sustainability reports, even if they are already complying with the mandatory climate-related disclosures under AASB S2. This allows entities that wish to provide more comprehensive sustainability-related financial information beyond just climate to use the framework provided by AASB S1.

  • AASB S1 sets the broader context for sustainability-related financial disclosures, which includes climate. AASB S1's main principles and guidance apply to reporting sustainability-related financial information across various topics, including climate. Therefore, the concepts of governance, strategy, risk management, and metrics and targets, as outlined in AASB S1, are also relevant to climate-related disclosures, even though AASB S2 provides more specific requirements for the latter.

Entities obligated to report on climate change under AASB S2 can look to AASB S1 for broader context and guidance, while entities aiming for more comprehensive sustainability reporting can voluntarily adopt AASB S1 in addition to complying with the mandatory AASB S2. The AASB's strategy reflects a "climate first, but not only" approach, with the potential for future mandatory requirements for other sustainability topics that could build upon the foundation of the current voluntary AASB S1.

What is the purpose of AASB S1 General Requirements for Disclosure of Sustainability-related Financial Information?

AASB S1 aims to provide a framework for entities that voluntarily choose to disclose information about their sustainability-related risks and opportunities as part of their general purpose financial reports. 

The objective is to enable primary users of these reports to understand how sustainability-related matters could reasonably be expected to affect the entity's cash flows, access to finance, and cost of capital over the short, medium, and long term. 

This is based on the understanding that an entity's ability to generate cash flows is inextricably linked to its interactions and dependencies within its value chain and the broader environment.

Is applying AASB S1 mandatory for all entities in Australia?

No, the application of AASB S1 is voluntary. While the AASB has issued AASB S2 Climate-related Disclosures, which is mandatory for certain entities under the Corporations Act 2001, AASB S1 is an optional standard that entities may elect to apply if they wish to provide broader sustainability-related financial disclosures. However, if an entity chooses to state compliance with AASB S1, it must apply all of its paragraphs as if the standard were mandatory.

What kind of sustainability-related risks and opportunities should an entity disclose under AASB S1?

An entity applying AASB S1 is required to disclose information about all sustainability-related risks and opportunities that could reasonably be expected to affect the entity's prospects. This includes risks and opportunities that could impact its cash flows, access to finance, or cost of capital over the short, medium, or long term. 

The standard emphasizes considering the entity's entire value chain and its dependencies and impacts on resources and relationships within that chain. Risks and opportunities that are not expected to have a reasonable impact on the entity's prospects are outside the scope of this standard.

What are the core elements of sustainability-related financial disclosures according to AASB S1?

AASB S1 outlines a structure for sustainability-related financial disclosures, encompassing four key areas:

  • Governance: Information about the governance processes, controls, and procedures used to monitor, manage, and oversee sustainability-related risks and opportunities, including the responsibilities and skills of the governing bodies or individuals involved.
  • Strategy: Information about the sustainability-related risks and opportunities that could affect the entity's prospects, their current and anticipated effects on the business model and value chain, their impact on strategy and decision-making, their effects on financial position, performance, and cash flows (both current and anticipated), and the resilience of the entity's strategy and business model to these risks.
  • Risk Management: Information about the entity's processes for identifying, assessing, prioritizing, and monitoring sustainability-related risks and opportunities, including how these processes are integrated into the overall risk management.
  • Metrics and Targets: Disclosure of metrics used to measure and monitor sustainability-related risks and opportunities, including progress towards any targets the entity has set or is required to meet by law or regulation. This includes both metrics specified in other Australian Sustainability Reporting Standards and those developed or used by the entity.

How does AASB S1 define materiality in the context of sustainability-related financial disclosures?

In the context of AASB S1, information is considered material if omitting, misstating, or obscuring that information could reasonably be expected to influence decisions that primary users of general purpose financial reports make based on those reports. These decisions relate to providing resources to the entity, such as buying or selling equity and debt instruments, providing loans, or exercising voting rights. Materiality is entity-specific and involves considering both the magnitude and nature of the effect of a sustainability-related risk or opportunity.

What sources of guidance should an entity consider when identifying sustainability-related risks, opportunities, and metrics under AASB S1?

When identifying sustainability-related risks and opportunities, an entity should primarily apply other applicable Australian Sustainability Reporting Standards. In addition, AASB S1 mandates that entities refer to and consider the applicability of the disclosure topics in the SASB Standards. Entities may also refer to and consider the applicability of other sources like the CDSB Framework Application Guidance and pronouncements from other standard-setting bodies, provided they do not conflict with Australian Sustainability Reporting Standards. For identifying applicable metrics in the absence of specific Australian standards, entities should again consider SASB Standards and may refer to other relevant sources and industry practices.

Where should an entity present its sustainability-related financial disclosures prepared in accordance with AASB S1?

AASB S1 requires that disclosures be provided as part of the entity's general purpose financial reports. Subject to any specific regulations, the exact location within these reports is flexible. Entities can present the information in a separate identifiable section or integrate it throughout the financial report, as long as the sustainability-related financial disclosures are clearly identified and distinguished from other information. The location should be easily accessible to primary users.

Are there any exemptions from disclosure requirements under AASB S1?

Yes, AASB S1 provides limited exemptions. An entity is not required to disclose information otherwise mandated by an Australian Sustainability Reporting Standard if law or regulation prohibits such disclosure. If this exemption is used for material information, the entity must identify the type of information and the source of the restriction. Additionally, an entity may omit information about a sustainability-related opportunity if it is commercially sensitive, meaning it is not publicly available, its disclosure could seriously prejudice the entity's economic benefits, and it cannot be disclosed in an aggregated manner without causing the same prejudice. If this exemption is used, the entity must disclose that it has done so and reassess the sensitivity at each reporting date. These exemptions do not apply to sustainability-related risks or as a basis for broad non-disclosure.

How does AASB S1 voluntary Australian standard for sustainability reporting align with international standards and address broader environmental and social considerations beyond climate change?

The voluntary Australian Sustainability Reporting Standard AASB S1 September 2024 is closely aligned with international standards, specifically the IFRS Sustainability Disclosure Standard IFRS S1 General Requirements for Disclosure of Sustainability-related Financial Information, issued by the International Sustainability Standards Board (ISSB). AASB S1 incorporates IFRS S1. However, there are

Australian-specific paragraphs, identified with the prefix “Aus”,  are not included in IFRS S1.

Regarding broader environmental and social considerations beyond climate change, AASB S1 has a wide scope. It applies to reporting sustainability-related financial information across a range of possible sustainability topics, including climate-related financial disclosures

The objective of AASB S1 is to require an entity to disclose information about its sustainability-related risks and opportunities that is useful to primary users of general purpose financial reports.

In the absence of a specific Australian standard for a particular sustainability-related risk or opportunity, entities are instructed to refer to and consider the applicability of disclosure topics in the SASB Standards. They may also refer to and consider the applicability of the CDSB Framework Application Guidance, pronouncements of other standard-setting bodies, and the sustainability-related risks and opportunities identified by entities in the same industry or geographical region.

Entities may refer to and consider the applicability of sources like the Global Reporting Initiative Standards and the European Sustainability Reporting Standards, to the extent they align with the objective of AASB S1 and do not conflict with Australian standards.

What are the key components and underlying principles of AASB S1 voluntary Australian sustainability reporting framework, and how do they aim to improve transparency and decision-making for users?

The voluntary Australian Sustainability Reporting Standard AASB S1, issued in September 2024, aims to improve transparency and decision-making for primary users of general purpose financial reports by providing a framework for disclosing information about an entity's sustainability-related risks and opportunities. Although application of AASB S1 is voluntary, entities electing to comply must apply all its paragraphs as if it were mandatory.

The key components and underlying principles of AASB S1 include:

  • Objective: The primary objective is to require an entity to disclose information about its sustainability-related risks and opportunities that is useful to primary users of general purpose financial reports in making decisions relating to providing resources to the entity. This information is deemed useful because an entity's ability to generate cash flows is linked to its interactions with stakeholders, society, the economy, and the natural environment throughout its value chain. The standard focuses on risks and opportunities that could reasonably be expected to affect the entity's cash flows, access to finance, or cost of capital over the short, medium, or long term, collectively referred to as 'sustainability-related risks and opportunities that could reasonably be expected to affect the entity’s prospects'.

  • Conceptual Foundations: For sustainability-related financial information to be useful, it must be relevant and faithfully represent what it purports to represent; these are fundamental qualitative characteristics. Usefulness is enhanced if the information is comparable, verifiable, timely, and understandable.


  • Core Content: The standard specifies 4 core content pilalrsthat should be disclosed unless another Australian Sustainability Reporting Standard permits or requires otherwise
  • General Requirements: These address how sustainability-related financial disclosures should be prepared and presented:

    • Sources of guidance: While Australian Sustainability Reporting Standards are the primary source, entities should also refer to and consider the applicability of disclosure topics in the SASB Standards and may consider the CDSB Framework Application Guidance, pronouncements of other standard-setting bodies, and industry practices. Entities must identify the specific sources of guidance applied.
    • Location of disclosures: Disclosures are required as part of the general purpose financial reports but can be included in various locations like management commentary, ensuring they are clearly identifiable. Information can also be included by cross-reference to other reports.
    • Timing of reporting: Sustainability-related financial disclosures should be reported at the same time as the related financial statements and cover the same reporting period.
    • Comparative information: Unless otherwise specified, comparative information for the preceding period should be disclosed for all amounts and, where useful, for narrative and descriptive information.
    • Statement of compliance: An explicit and unreserved statement of compliance can be made only if all requirements of AASB S1 are met.
  • Judgements, Uncertainties, and Errors: The standard requires disclosure of significant judgements made in preparing the disclosures, the most significant uncertainties affecting reported amounts, and the correction of material prior period errors.

  • Connected Information: Entities should provide information in a manner that enables users to understand the connections between different sustainability-related matters and between the sustainability-related financial disclosures and other general purpose financial reports, including the financial statements.

Notably, unlike IFRS S1, AASB S1 does not allow delaying sustainability reporting beyond the financial statements or limiting initial application to climate-related information only.

By establishing these components and principles, AASB S1 aims to provide a structured and consistent framework for voluntary sustainability-related financial disclosures. This should lead to more transparent, comparable, and decision-useful information for primary users such as investors, lenders, and other creditors, enabling them to better assess the risks and opportunities facing the reporting entity and make more informed decisions about resource allocation. 

Glossary of AASB S1 Key Terms

  • Business Model: An entity’s system of transforming inputs through its activities into outputs and outcomes that aims to fulfil the entity’s strategic purposes and create value for the entity and hence generate cash flows over the short, medium and long term.
  • Disclosure Topic: A specific sustainability-related risk or opportunity based on the activities conducted by entities within a particular industry as set out in an Australian Sustainability Reporting Standard or a SASB Standard.
  • General Purpose Financial Reports: Reports intended to meet the common information needs of a wide range of primary users, including financial statements and sustainability-related financial disclosures.
  • Material Information: In the context of sustainability-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.
  • Primary Users: Users of general purpose financial reports who provide resources to the entity (e.g., investors, lenders, other creditors).
  • SASB Standards: The industry-based sustainability disclosure standards developed by the Sustainability Accounting Standards Board.
  • Sustainability-related Risks and Opportunities: Risks and opportunities that could reasonably be expected to affect the entity’s cash flows, its access to finance or cost of capital over the short, medium or long term, collectively referred to as ‘sustainability-related risks and opportunities that could reasonably be expected to affect the entity’s prospects’.
  • Value Chain: The series of activities involved in the process by which a company receives inputs, adds value to them, and sells the resulting outputs. It encompasses the entity’s operations and its interactions, resources, and relationships along its supply, marketing, and distribution channels.
  • IFRS Sustainability Disclosure Standards: Standards issued by the International Sustainability Standards Board (ISSB), of which AASB S1 is based.

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