The Australian Accounting Standards Board has introduced sustainability-related disclosure standards that align Australia’s reporting framework with global climate disclosure expectations. These standards will affect how many Australian businesses assess climate-related financial risks, manage sustainability data and communicate their exposure to investors, regulators and stakeholders.
For Australian businesses, this shift is more than a compliance requirement. It is an opportunity to strengthen sustainability governance, improve climate risk management, support investor confidence and build long-term business resilience.
Companies that prepare early for the AASB sustainability standards will be better positioned to manage regulatory, financial and reputational risks in an increasingly sustainability-focused market.
Key takeaways
- The AASB sustainability disclosure standards require eligible businesses to report on climate-related risks, opportunities and related financial impacts.
- AASB S2 is mandatory for certain entities under Australia’s phased climate reporting regime, while AASB S1 remains voluntary.
- Alignment with ISSB and TCFD-based principles means businesses need stronger governance, risk management, data collection and disclosure practices.
- ASIC will monitor sustainability reporting and climate-related claims, increasing the need for accurate, supportable and consistent disclosures.
- Early preparation can help businesses improve stakeholder trust, investor confidence and climate risk decision-making.
Understanding the AASB sustainability standards
Australia’s sustainability reporting requirements are reshaping how businesses identify, assess and disclose climate-related financial risks. The Australian Accounting Standards Board has introduced the Australian Sustainability Reporting Standards to provide a structured and internationally aligned framework for corporate sustainability disclosures.
Mandatory climate reporting began for the largest reporting entities for financial years commencing on or after 1 January 2025. The requirements are being phased in across groups, with climate-related financial disclosures included in a sustainability report alongside the financial report and directors’ report.
These disclosures are intended to improve transparency, comparability and decision-usefulness for investors, regulators and other users of general purpose financial reports.
AASB S1 and AASB S2: what businesses need to know
The Australian Sustainability Reporting Standards framework includes two key standards: AASB S1 General Requirements for Disclosure of Sustainability-related Financial Information and AASB S2 Climate-related Disclosures.
AASB S2: mandatory climate-related disclosures
AASB S2 is the mandatory climate disclosure standard for certain reporting entities. It is the Australian equivalent of IFRS S2 and focuses on climate-related 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.
Under AASB S2, businesses may need to disclose:
- material climate-related risks and opportunities;
- governance processes used to oversee climate-related risks;
- strategy and resilience under climate-related scenarios;
- risk management processes for identifying, assessing and managing climate risks;
- Scope 1 and Scope 2 greenhouse gas emissions;
- Scope 3 emissions where required and material;
- metrics, targets and transition plans where relevant.
This standard is designed to give investors and stakeholders consistent and comparable information about how businesses are exposed to, and responding to, climate-related risks and opportunities.
AASB S1: voluntary general sustainability disclosures
AASB S1 sets out general requirements for disclosing sustainability-related financial information beyond climate. It is currently voluntary in Australia, but it can help businesses prepare for broader sustainability reporting expectations and align disclosure practices with international frameworks.
Early adoption of AASB S1 can help businesses:
- prepare for future regulatory developments;
- align with investor and stakeholder expectations;
- strengthen sustainability governance and risk management;
- create a more consistent disclosure process across environmental, social and governance topics.
Who will be affected by the AASB sustainability standards?
The mandatory climate reporting regime applies to certain entities under the Corporations Act, with requirements phased in according to size and reporting category. The largest entities began reporting for financial years commencing on or after 1 January 2025, with other large companies and financial institutions phased in over time.
Businesses most likely to be affected include:
- large listed and private companies that meet reporting thresholds;
- financial institutions and asset managers covered by the regime;
- entities required to prepare sustainability reports under the Corporations Act;
- suppliers and contractors that receive climate data requests from larger reporting entities.
Smaller businesses may not be directly captured at first, but many will still face indirect reporting pressure. Larger customers, investors and procurement teams may request emissions data, sustainability policies or climate risk information from suppliers to support their own reporting obligations.
Implications for Australian businesses
1. Increased reporting complexity and compliance costs
Businesses may need to upgrade sustainability reporting systems, improve emissions data controls and integrate climate risk analysis into existing governance and finance processes.
Companies with limited internal sustainability capability may also require training, external support or clearer internal ownership to meet the standard of disclosure expected under AASB S2.
2. Stronger investor and stakeholder scrutiny
Climate-related financial disclosures are designed to support investor decision-making. This means businesses should expect greater scrutiny of climate risks, transition plans, emissions data and claims about future performance.
Disclosures that are vague, inconsistent or unsupported may increase regulatory, reputational and assurance risk.
3. Legal and reputational risks for poor disclosure
ASIC has made sustainability reporting a clear area of regulatory focus. Businesses making sustainability claims, net-zero commitments or climate-related statements need to ensure those claims are accurate, supportable and consistent across reports, websites, investor materials and procurement documents.
Poorly substantiated climate claims may expose businesses to allegations of greenwashing, misleading disclosure or weak governance.
4. Competitive advantage through better sustainability governance
Organisations that go beyond minimum compliance and embed climate risk into strategy can improve decision-making and strengthen stakeholder confidence.
Strong sustainability reporting can also support access to capital, tender competitiveness and relationships with investors, customers and major supply chain partners.
What businesses should do to prepare
1. Strengthen governance and internal accountability
Businesses should define who is responsible for climate-related financial disclosures, including Board oversight, executive accountability and operational data ownership.
Clear governance structures help ensure that climate information is reviewed, challenged and used in decision-making rather than treated as a standalone reporting task.
2. Conduct climate risk assessments
Climate risk assessments help businesses understand how physical and transition risks could affect operations, assets, supply chains, markets and financial performance.
Scenario analysis can also support strategic planning by testing how the business may perform under different climate-related futures.
3. Improve data collection and reporting processes
Reliable sustainability reporting depends on reliable data. Businesses should assess how emissions, energy, operational and supplier data is collected, calculated, reviewed and retained.
Manual spreadsheets and fragmented systems may be difficult to defend under regulatory or assurance scrutiny. Fit-for-purpose data systems and documented methodologies can improve consistency and confidence.
4. Train key stakeholders on disclosure requirements
Executives, finance teams, sustainability teams and operational managers need a shared understanding of AASB S2 requirements and the evidence needed to support climate-related disclosures.
Training can reduce the risk of inconsistent statements, unsupported claims and disclosure gaps.
Strategic imperatives for executives
- Adopt a proactive sustainability reporting strategy aligned with AASB S2.
- Build governance frameworks that support climate risk oversight and disclosure approval.
- Strengthen data collection, verification and documentation before assurance expectations increase.
- Integrate climate risk into enterprise risk management and strategic planning.
- Review sustainability claims across websites, reports and investor materials for consistency.
Turning AASB compliance into business value
The AASB sustainability disclosure standards mark a significant shift in Australia’s corporate reporting landscape. They introduce stronger expectations around accountability, risk management, transparency and climate-related financial disclosure.
While compliance may create initial challenges, forward-looking businesses can use this shift to improve sustainability governance, strengthen resilience and demonstrate credible climate risk management to investors, regulators and stakeholders.
Naturaliste Solutions can assist businesses in navigating AASB sustainability requirements, developing climate risk assessments and improving sustainability reporting processes. Get in touch to discuss how your business can prepare for Australia’s climate disclosure regime.
