Asia Pacific Leads in Sustainability Reporting, but Gaps Remain
Asia-Pacific now leads the world in adopting climate reporting standards. That matters for UK businesses with supply chains, subsidiaries or trade relationships in the region. Meanwhile, new research shows many companies still treat disclosure as a paperwork task rather than a risk management tool. That gap could affect suppliers, investors and joint ventures across borders.
The International Sustainability Standards Board published its framework in 2023. Since then, governments representing nearly half of global GDP have moved to adopt or align with it. Most are in Asia-Pacific. The shift changes what disclosure means. These are not voluntary environmental updates. They form part of mainstream financial reporting, focused on risks that could affect cash flow, asset values and the cost of capital.
For UK businesses working with partners in the region, the change raises practical questions. What happens when a supplier must report physical climate risks? How does assurance affect data you receive from overseas operations? And what do rising regional standards mean for your own compliance calendar, especially as UK rules develop in parallel?
Adoption now covers half the global economy
The Association of Chartered Certified Accountants published research showing that Asia-Pacific economies adopting ISSB standards represent approximately $60 trillion in GDP. That figure equals around 47 per cent of the global total. More than 80 per cent of ASEAN economies by GDP have either adopted the framework or announced plans to do so.
The International Sustainability Standards Board created two standards. IFRS S1 covers general sustainability-related financial information. IFRS S2 addresses climate-related disclosures. Both focus on information relevant to investors and lenders. Consequently, they require companies to explain how climate risks and opportunities could affect financial performance, not just environmental outcomes.
The IFRS Foundation reports that more than 45 jurisdictions globally are taking steps to use the standards. However, it has warned that differences between national approaches could fragment reporting and create cross-border complications. That risk matters for businesses managing operations or supply chains across multiple countries.
Asia-Pacific's lead reflects several factors. The region faces significant physical climate risks, including extreme heat, flooding, typhoons and sea-level rise. Furthermore, multinational buyers and investors increasingly demand comparable data. Regulators have responded by introducing mandatory requirements, often phased over several years.
How countries across the region are introducing the framework
Implementation varies by jurisdiction. Some governments have adopted ISSB standards directly. Others are developing local rules intended to produce aligned outcomes. The result is a patchwork that shares common principles but differs in timing and scope.
Australia adopted local sustainability standards based on the ISSB framework in September 2024. Reporting requirements apply from 2025 to companies already covered by the country's corporate reporting regime. That means large businesses and public entities will report climate-related financial information alongside traditional financial statements.
Hong Kong issued standards fully aligned with ISSB. Voluntary application becomes available from August 2025. In addition, the Hong Kong Stock Exchange introduced climate-related requirements for large-cap issuers for financial years beginning on or after 1 January 2026. These rules affect companies listed in Hong Kong, including those with UK parent entities or investors.
Malaysia is moving toward ISSB-aligned reporting. Notably, it plans to introduce reasonable assurance over Scope 1 and Scope 2 emissions for its largest listed issuers from 2028. Reasonable assurance is a higher standard than limited assurance. It requires auditors to obtain sufficient evidence to express a positive opinion on reported figures.
China is also taking steps toward ISSB-based reporting. Although the pathway is still developing, the direction signals alignment with international expectations. Similarly, Japan, Singapore, South Korea, Indonesia, the Philippines and Thailand are all developing or implementing regimes based on or intended to align with the framework.
This regulatory momentum shifts sustainability reporting from voluntary communications into mainstream financial governance. For businesses, that means disclosure becomes subject to the same controls, board oversight and audit processes as financial statements. It also means penalties for inaccurate reporting may eventually mirror those applied to financial misstatements.
Many companies still treat reporting as compliance, not strategy
Despite rapid policy progress, research from the Association of Chartered Certified Accountants found that many organisations have not yet converted sustainability data into practical business decisions. The report argues that the central challenge is no longer whether companies disclose information, but whether they use it to identify vulnerabilities and strengthen operations.
Only 20 per cent of organisations identified climate-related risks across their operations. One-quarter had no mechanisms in place to build climate resilience. Approximately two-thirds were not investing adequately to address physical climate risks. Meanwhile, only 37 per cent planned to increase spending on physical climate-risk management.
Business-continuity plans were the most common resilience measure, used by 58 per cent of respondents. However, only 20 per cent used horizon scanning to identify climate risks across locations. Just 17 per cent used scenario testing. These figures suggest many organisations respond to climate risk reactively rather than proactively.
A business-continuity plan may help after a disruption occurs. Nevertheless, it does not necessarily identify how changing rainfall patterns, water shortages, heat stress or supply-chain interruptions could affect future revenue and costs. ISSB reporting, by contrast, is intended to focus on risks and opportunities that could reasonably affect an entity's financial prospects.
For companies, effective implementation should connect sustainability data with capital expenditure, enterprise-risk registers, procurement decisions and financing strategies. It should also inform insurance arrangements, product development, board oversight and executive remuneration. ACCA said early adopters that embedded sustainability information into governance and information systems were more likely to use it in strategy and capital expenditure.
The report also links decarbonisation with resilience. Reducing dependence on fossil fuels can lower emissions while protecting companies from fuel-price volatility and supply shocks. Consequently, the same actions that support net-zero targets may also reduce operational risk and stabilise costs over time.
What mandatory reporting means for UK businesses with Asia-Pacific links
UK companies with operations, suppliers or customers in Asia-Pacific will face several practical consequences. First, subsidiaries in jurisdictions with mandatory reporting will need to comply with local requirements. That affects resource planning, systems and internal controls. Second, suppliers may request data to support their own disclosures, particularly for Scope 3 emissions.
Third, investors and lenders with portfolios across the region may expect UK entities to meet similar standards, even where UK rules do not yet require full alignment. Fourth, assurance requirements will raise the bar for data quality. If a supplier in Malaysia must obtain reasonable assurance over emissions, they will need accurate, auditable information from upstream partners. That includes UK businesses supplying goods, services or components.
Fifth, differences between national rules create compliance complexity. A UK business with operations in Australia, Hong Kong and Singapore may face different reporting timelines, materiality thresholds and assurance requirements. Coordinating those obligations requires careful planning and centralised data management.
Sixth, physical climate risks in the region could affect supply chains, asset values and insurance costs. For example, flooding in Thailand or typhoons in the Philippines can disrupt manufacturing, delay shipments and increase claims. ISSB reporting requires companies to assess those risks and explain how they might affect financial performance. Therefore, UK businesses relying on regional supply chains should consider similar assessments, even where not yet mandatory.
Seventh, transition risks matter too. As regional governments introduce carbon pricing, energy efficiency standards or fossil fuel restrictions, operating costs for suppliers may change. Those changes flow through to procurement costs and contract terms. Understanding how suppliers are preparing for transition risks helps UK businesses anticipate price movements and renegotiate contracts where necessary.
Assurance will test data quality and internal controls
The next phase of implementation will focus on data quality, internal controls and external assurance. As regulators introduce mandatory reporting, companies will face greater scrutiny over emissions figures, climate-risk assessments, targets and transition plans. Malaysia's plan to require reasonable assurance over Scope 1 and Scope 2 emissions from 2028 illustrates the direction of travel.
Sustainability information is often drawn from systems that have historically been separate from financial reporting. Companies may need stronger controls over emissions data, supplier information, asset-level climate exposure and assumptions used in scenario analysis. For example, Scope 2 emissions require data on electricity consumption and grid emission factors. Scope 3 emissions require data from suppliers, logistics providers and customers.
Assurance providers will test whether controls are adequate. They will check whether data sources are reliable, calculations are accurate and assumptions are reasonable. If controls are weak, companies may receive qualified opinions or fail assurance entirely. That creates reputational risk and may affect access to capital.
The IFRS Foundation has introduced transition provisions to help entities apply the standards progressively. These include temporary relief allowing entities initially to report only climate-related information under IFRS S2. In the first year, entities may also defer Scope 3 greenhouse-gas emissions reporting. Such relief eases implementation, but it also means companies will eventually need more comprehensive value-chain data.
For UK businesses, this timeline matters. If your regional operations or suppliers defer Scope 3 reporting initially, you may not receive requests for data immediately. However, those requests will arrive within a year or two. Preparing data collection processes now avoids last-minute scrambles and ensures consistency across reporting periods.
Five things UK businesses should consider
- Asia-Pacific economies representing 47 per cent of global GDP are adopting or aligning with ISSB standards, making climate disclosure a mainstream financial reporting requirement across the region.
- Subsidiaries in Australia, Hong Kong, Malaysia and other jurisdictions will face mandatory reporting obligations from 2025 onward, with phased timelines extending to smaller companies over time.
- Suppliers in the region may request data to support their own disclosures, particularly for Scope 3 emissions, requiring UK businesses to provide auditable information on products, services and transport.
- Reasonable assurance requirements, starting in Malaysia from 2028, will raise the bar for data quality and internal controls, affecting companies with listed operations or significant suppliers in the region.
- Physical climate risks such as flooding, typhoons and heat stress can disrupt regional supply chains, and ISSB reporting requires companies to assess and disclose how such risks could affect financial performance.
Regional fragmentation could complicate cross-border operations
Although adoption is advancing quickly, national differences could undermine comparability. Jurisdictions may vary in which companies fall within scope, when reporting becomes mandatory and whether standards are fully aligned with IFRS S1 and S2. They may also differ in how Scope 3 emissions are treated, whether external assurance is required and how materiality is assessed.
The IFRS Foundation has cautioned that these variations could produce fragmentation and create cross-border challenges. For multinational companies, this may result in multiple reporting calendars, different assurance requirements and overlapping data definitions. A common baseline can reduce those costs, but only if local rules remain sufficiently aligned and regulators coordinate implementation.
UK businesses should monitor how jurisdictions where they operate or source products interpret the standards. Differences in materiality thresholds, for example, could mean a risk considered immaterial in one country must be reported in another. Similarly, variations in Scope 3 methodologies could require different data sets for different jurisdictions.
What boards and finance teams should ask
Asia-Pacific's leadership in sustainability reporting is significant. However, adoption alone does not demonstrate resilience. The decisive test will be whether disclosures influence decisions before climate-related losses occur. Boards and finance leaders should move beyond compiling annual metrics and ask more practical questions.
Which facilities, suppliers and markets are most exposed to physical climate risks? How could climate hazards affect cash flows, asset values and insurance costs? What investments would reduce exposure or improve adaptability? Are transition plans supported by credible budgets and operational milestones? Can reported data withstand external assurance?
These questions apply whether your operations are in the UK, Asia-Pacific or both. The region's reporting momentum gives companies a foundation for answering them. Nevertheless, without stronger ownership from boards, finance teams and operating managers, sustainability reporting risks becoming a documentation exercise rather than a strategic capability.
For UK businesses, the priority is to close the gap between disclosure and action. Companies that integrate sustainability information into capital allocation, risk management and operational planning may gain greater resilience. Those that focus only on minimum compliance could remain exposed to physical disruption, regulatory change and rising stakeholder expectations.
SBS helps UK businesses develop carbon reporting systems that meet PPN 06/21 and prepare for evolving disclosure requirements. We also support companies building ESG compliance processes that align with investor expectations and regulatory timelines. Our approach focuses on practical systems that turn data into decisions, not just documentation.
Where to find further guidance and policy updates
The IFRS Foundation publishes updates on jurisdictional adoption and implementation timelines on its website. The International Sustainability Standards Board section includes the full text of IFRS S1 and IFRS S2, along with transition provisions and educational materials.
The Association of Chartered Certified Accountants provides research and guidance on sustainability reporting, including regional analysis and case studies. Its sustainability reporting resources cover technical implementation and governance considerations.
For UK businesses preparing for domestic requirements, the Financial Reporting Council and the Department for Energy Security and Net Zero publish guidance on climate-related disclosures and the UK's approach to international standards. These resources help companies understand how UK rules interact with international frameworks.
Monitoring developments in jurisdictions where you operate or source products is essential. National regulators and stock exchanges publish implementation timelines, scope criteria and assurance requirements. Consequently, tracking those announcements helps you plan resource allocation and system upgrades before deadlines arrive.