Hong Kong Sustainability Disclosure Standards HKFRS S1 and S2 | Phased Rollout Through 2028

HKFRS S1 S2 sustainability disclosure Hong Kong requirements are changing how listed companies and large financial institutions prepare ESG information. The work is moving closer to finance reporting, not because every company needs a longer ESG report, but because investors now expect cleaner links between climate risk, cash flow, strategy, and governance. 

A property group will need better building-level energy data. A logistics operator will need fuel and emissions records that can survive review. The writing comes later. The evidence comes first.

What HKFRS S1 And S2 Cover

HKICPA published HKFRS S1 and HKFRS S2 on 12 December 2024. The standards are fully aligned with ISSB standards and have an effective date of 1 August 2025. HKFRS S1 deals with sustainability-related financial information, while HKFRS S2 focuses on climate-related disclosures.

That sounds technical, but the boardroom impact is quite practical. Companies have to explain how sustainability and climate matters may affect business value. It is not enough to say the company supports green practices. The report should show how the company identifies risk and who reviews it. It should also show what data supports the review and how the numbers link to strategy.

For example a listed retailer may need to track store electricity use landlord data refrigeration systems supplier packaging and delivery emissions. A bank may need to review climate exposure in lending portfolios. These are not tasks that can be solved in the final week before report approval.

ISSB Hong Kong Adoption Sustainability Timeline

Hong Kong’s roadmap uses a phased approach. The Government’s Roadmap on Sustainability Disclosure says large publicly accountable entities, or PAEs, should fully adopt ISSB-aligned standards no later than 2028. Large PAEs include Large Cap Issuers and large non-listed financial institutions with weight in Hong Kong’s market. 

The transition is already visible through HKEX rules. HKEX says the amended Listing Rules came into effect on 1 January 2025, and the New Climate Requirements are based on IFRS S2. LargeCap Issuers have a more demanding timetable, while other Main Board issuers and GEM issuers move in stages. 

Climate Disclosure Listed Companies Hong Kong

Climate disclosure listed companies Hong Kong rules are already pushing teams to change how they work. HKEX’s New Climate Requirements are modelled on IFRS S2. 

LargeCap Issuers must disclose Scope 1 and Scope 2 greenhouse gas emissions for financial years beginning on or after 1 January 2025. Other climate requirements apply under the phased model, with mandatory reporting for LargeCap Issuers for financial years beginning on or after 1 January 2026. 

This creates a data problem before it creates a reporting problem. Many companies still keep electricity bills with property teams, travel data with admin teams, fuel logs with operations, supplier data with procurement, and risk notes with the board secretary. HKFRS-style reporting needs all of this to speak to one another.

Why HKICPA Sustainability Reporting Standard Work Feels Different

The HKICPA sustainability reporting standard brings ESG closer to financial reporting discipline. Older ESG reports often worked like annual summaries. Teams collected activities, wrote progress notes, and added some metrics.

HKFRS S1 and S2 ask for a tighter link to financial effect. A flood risk is not only an environment topic if it can affect asset value, insurance cost, business interruption, or future capital spending. Energy efficiency is not only a green initiative if it changes operating cost and investment plans.

That shift changes ownership.ESG can lead the content. But finance risk legal operations procurement internal audit and the board all need clear roles.

Common Mistakes Companies Should Avoid

• The first mistake is treating 2028 as a distant deadline. For larger issuers, climate reporting duties already started through HKEX’s phased requirements.
• The second mistake is giving the work only to the ESG team. The final report may sit under ESG. But the source data often belongs to operations finance facilities HR procurement and legal.
• The third mistake is using broad claims without evidence. Lines about commitment and long-term sustainability will not help if the company cannot support targets, assumptions, and emissions numbers.
• Another common mistake is ignoring board review until the draft report is ready. Directors need time to understand climate risk, reporting duties, data limits, and the judgement used in disclosures.

What Companies Should Do Next

Start with a gap check against HKFRS S1, HKFRS S2, and HKEX climate rules. Keep the first review practical. 

• Which data already exists? 
• Who owns it? 
• Which data is estimated? 
• Which figures can be checked? 
• Which disclosures need board discussion?

Finance teams should identify climate and sustainability matters that may affect revenue, cost, assets, liabilities, funding, or insurance. ESG teams should build the data map. Company secretaries should add sustainability items to board and committee calendars. Internal audit can test the evidence trail before the company faces pressure for assurance.

A useful first project is a 12-month reporting calendar. It should cover data collection, owner review, board papers, draft sections, evidence folders, and final approval.

What’s the Role of Arnifi Here?

Sustainability disclosure becomes easier when finance data, ESG records, board papers, climate metrics, and reporting deadlines are reviewed together. Our expert team at Arnifi helps companies organise these moving parts, prepare cleaner disclosure workflows, and build practical readiness for Hong Kong’s phased HKFRS S1 and S2 rollout.

Conclusion

Hong Kong’s sustainability disclosure shift is no longer only a policy update. HKFRS S1 and S2 bring ISSB-aligned reporting into the local framework, while HKEX climate rules are already changing listed company reporting habits. Companies that start with data ownership, board review, and finance-linked controls will be in a better place by 2028. The safest move is to fix the reporting process before the reporting year arrives.

FAQs:

1. What Are HKFRS S1 And S2?

HKFRS S1 covers sustainability-related financial disclosures. HKFRS S2 covers climate-related disclosures. Both are aligned with ISSB standards.

2. When Do HKFRS S1 And S2 Become Effective In Hong Kong?

HKICPA states that HKFRS S1 and S2 have an effective date of 1 August 2025. 

3. Does Every Hong Kong Company Need To Report Under HKFRS S1 And S2 By 2028?

No. The 2028 target focuses first on large publicly accountable entities, including Large Cap Issuers and large non-listed financial institutions.

4. What Should Companies Prepare First?

Start with emissions data, board oversight, climate risk review, finance impact checks, and a clear reporting calendar.