Evolution of Global Sustainability Regulations

Over the past decade, sustainability reporting has shifted from a voluntary, values-driven exercise to a core part of corporate governance and financial disclosure. What was once led by voluntary frameworks and best practice guidance is now increasingly shaped by mandatory regulation, with governments and regulators around the world embedding climate and sustainability into disclosure requirements.

This shift reflects a growing recognition that climate and sustainability issues are not just ethical or reputational concerns, they are financial and strategic risks that affect long term business performance and resilience.

From voluntary frameworks to regulation

For many years, sustainability reporting was largely guided by voluntary standards such as the Global Reporting Initiative (GRI) and the Greenhouse Gas Protocol (GHG Protocol). These frameworks helped organisations understand, manage, and communicate their sustainability impacts. However, voluntary reporting has limitations, as uneven adoption led to inconsistent and incomparable information across companies.

That is now changing. Policymakers have recognised that climate risks are financial risks, as the worst impacts of climate change will be felt beyond typical planning horizons. These risks directly affect asset value, operating costs, access to capital, insurance, supply chains and long-term resilience of businesses and economies. 

Consistent, decision-useful information is essential for investors and other stakeholders. As a result, many major economies have moved toward mandatory, standardised disclosures. Australia is part of this global movement, beginning with mandatory climate disclosures.

The rise of climate-related financial disclosures in Australia: a timeline

In Australia, mandatory sustainability reporting has been shaped by a series of key milestones:

• 2015: The Task Force on Climate-related Financial Disclosures (TCFD) was established by the Financial Stability Board (FSB)
• 2017: TCFD published its final recommendations to structure climate reporting around four pillars: governance, strategy, risk management, metrics and targets.
• 2021: The International Sustainability Standards Borad (ISSB) was established by the International Financial Reporting Standards (IFRS) Foundation.
• 2023: Building on the TCFD recommendations, the ISSB published IFRS S1 General Requirements for Disclosure of Sustainability-related Financial Information and IFRS S2 Climate-related disclosures.
• 2024: Based on IFRS, the Australian Accounting Standards Board (AASB) issued a voluntary standard AASB S1 General Requirements for Disclosure of Sustainability-related Financial Information and made AASB S2 Climate-related Disclosures mandatory under the Corporations Act.
• 2025: The Auditing and Assurance Standards Board (AUASB) issued Standards on Sustainability Assurance, including a phased timetable for audit requirements.

• European Union: The Corporate Sustainability Reporting Directive (CSRD) requires large companies to report on ESG impacts, supported by the European Sustainability Reporting Standards (ESRS) that set out the detailed disclosure requirements.
• United Kingdom: The UK Sustainability Reporting Standards (UK SRS) have been finalised for voluntary adoption, with mandatory requirements expected to be phased in from 2027.
• United States (California): The Climate-Related Financial Risk Act requires large companies to disclose climate risks and mitigation measures.
• Canada: Canadian Sustainability Disclosure Standards (CSDS) are voluntary but designed for future mandatory adoption.
• Singapore: Plans to align with ISSB requiring Scope 1 and 2 GHG disclosures for listed companies in 2025, Scope 3 by 2027, and emissions assurance starting in 2027.

Across these regions, sustainability information is rapidly matching financial data in expectation and scrutiny.

What this means for organisations

The evolution of regulation is changing both the audience and the purpose of sustainability reporting. Disclosures are no longer just about storytelling or brand positioning, they are about governance, risk management, strategy, metrics and targets, and how these connect to financial performance and resilience.

In practice, this means organisations need to:

• Strengthen governance and oversight of climate and sustainability issues
• Build robust data, systems, and controls for emissions and other ESG metrics
• Integrate climate and sustainability into strategy and risk management
• Start maintaining auditable records to prepare for greater scrutiny and assurance

Even organisations not yet in scope of mandatory regimes are increasingly affected through supply chains, customers, investors, and lenders, who are asking for better and more consistent sustainability information.

Cress supports organisations at every stage of their sustainability and climate reporting journey, from assessing current position, building robust GHG inventories and setting targets, to strengthening governance and integrating climate into existing business strategy and management processes. We help translate complex regulatory requirements into practical systems, ensuring your data, processes, and reporting are credible, consistent, and ready for increasing scrutiny from regulators, investors, and customers.

Please Contact Us if you have any questions or would like further information.

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Cress is the Hydroflux Group’s in-house sustainability consulting team, operating as a specialised division and driven by a simple but powerful goal: to help organisations across Australia, New Zealand and the Pacific region create a more sustainable future. As a young and agile team, we combine technical expertise with fresh, forward-thinking approaches to help clients navigate complex challenges across climate risk, emissions reduction, modern slavery, water stewardship, and ESG reporting, building on the Hydroflux legacy of engineering excellence while bringing a sustainability lens to the industries and communities shaping the future of our region.