Key Takeaways:
- ISSB reporting is designed to make sustainability-related financial disclosures more consistent, comparable, and useful for investors.
- IFRS S1 covers general sustainability-related financial disclosures, including risks and opportunities that could reasonably affect a company’s prospects.
- IFRS S2 focuses on climate-related disclosures, including greenhouse gas emissions and climate-related risks.
Introduction
As sustainability expectations continue to evolve, companies are under increasing pressure to provide clear, comparable, and decision-useful information about environmental, social, and governance matters. Investors no longer look only at financial statements. They also want to understand how sustainability-related risks and opportunities may affect business resilience, performance, and long-term value.
The International Financial Reporting Standards (IFRS) Foundation describes IFRS S1 and IFRS S2 as the first IFRS Sustainability Disclosure Standards, issued by the International Sustainability Standards Board (ISSB). The two standards are intended to serve as a global baseline for investor-focused sustainability disclosures. For Singapore companies, the shift towards ISSB reporting means that sustainability information must be approached with greater discipline.
It is not enough to include broad ESG statements or general sustainability initiatives. Companies need to identify what is material, support disclosures with reliable data and explain how sustainability matters connect to governance, strategy, risk management, metrics, and targets.
Understanding ISSB Reporting and Its Key Aspects
ISSB reporting is intended to improve consistency and comparability in sustainability-related financial disclosures. For companies, this means reporting should be structured so that investors can understand how sustainability issues may affect the business, rather than being presented as a separate corporate responsibility exercise.
Under IFRS S1, companies disclose sustainability-related risks and opportunities that could reasonably affect their prospects. IFRS S2 then provides climate-specific disclosure requirements, including information on greenhouse gas emissions and climate-related risks.
Implementation Timeline in Singapore
Singapore’s climate reporting requirements are being introduced in phases. Companies should pay close attention to the latest requirements that apply to their listing status, market capitalisation and reporting obligations.
For financial years starting on or after 1 January 2025, all listed companies are required to report Scope 1 and Scope 2 greenhouse gas emissions. STI constituents are also required to report other ISSB-based climate-related disclosures from FY2025.
From FY2026, Scope 3 greenhouse gas emissions reporting becomes mandatory for STI constituents. For other non-STI-listed companies, Scope 3 emissions reporting remains voluntary until further notice.
For other ISSB-based climate-related disclosures beyond Scope 1, Scope 2 and Scope 3 emissions, non-STI constituent listed companies with a market capitalisation of S$1 billion and above are required to report from FY2028. Non-STI constituent listed companies with a market capitalisation below S$1 billion will follow from FY2030.
This phased approach gives companies time to build internal capability, improve data collection and embed sustainability considerations into existing governance and reporting processes. However, companies that prepare early may be better positioned to respond when requirements become more extensive.
Why Materiality Matters
Materiality determines what information should be disclosed. A company does not need to report every sustainability-related matter in the same level of detail. Instead, it should focus on information that could influence investor decisions.
This requires both judgement and structure. Materiality may involve quantitative factors, such as the financial impact of a climate-related risk, as well as qualitative factors, such as the strategic importance of a supply chain issue or exposure to changing market expectations.
For Singapore companies, this focus is important because sustainability reporting can easily become too broad. Without a clear materiality lens, reports may include excessive information that does not help investors understand the company’s actual risks and opportunities. A disciplined materiality process helps companies produce disclosures that are concise, relevant, and more aligned with investor needs.
What are the Benefits of Applying Materiality in ISSB Reporting?
A clear materiality process supports better reporting by helping companies focus on the ESG and climate-related matters most relevant to investors. Rather than treating sustainability reporting as a long checklist, companies can use materiality to organise information around business impact and financial relevance.
One benefit is streamlined reporting. By identifying the issues that matter most, companies can reduce unnecessary complexity and avoid overwhelming stakeholders with less relevant information. This makes the report more focused and easier to interpret.
Another benefit is improved transparency. When companies explain why certain sustainability matters are material, investors gain clearer insight into the company’s exposure, priorities, and preparedness. This can strengthen confidence in the quality of the reporting process.
Materiality also supports risk management. By identifying material sustainability-related risks, companies can better understand where monitoring, controls, internal data, and board-level oversight may need strengthening. This is especially useful as reporting requirements become more structured.
When businesses require sustainability report assurance, professional support can help review reporting processes, assess data accuracy, and build confidence in the information disclosed.
Building More Reliable Sustainability Disclosures
Materiality helps companies make sustainability reporting more focused, investor-relevant and connected to business performance. As Singapore’s reporting requirements continue to phase in, companies should begin by understanding which obligations apply to them, which sustainability matters are most relevant and what data is needed to support meaningful disclosure.
ISSB reporting is not only about meeting a reporting requirement. It is also an opportunity for companies to strengthen internal accountability, improve transparency, and communicate sustainability-related risks and opportunities with greater clarity.
For small and mid-sized enterprises (SMEs), startups and larger corporations, the practical starting point is to build a reporting process that is proportionate, well-documented, and aligned with applicable requirements. With the right preparation, companies can move from fragmented sustainability information towards more credible disclosures.
Credo Assurance supports Singapore companies with practical, compliance-focused audits, financial reporting, and assurance services that strengthen financial transparency and accountability. Our chartered accountants in Singapore provide dependable guidance shaped by industry knowledge and practical experience.
As a reliable accounting firm in Singapore, we bring a structured, detail-oriented perspective to reporting processes, data reliability, and governance documentation. If your organisation is preparing for evolving sustainability and climate-related reporting requirements, our team can provide professional guidance to support clearer reporting, stronger accountability, and better financial transparency.
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