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Asia’s ESG regulatory landscape accelerated significantly in March 2026, with multiple jurisdictions advancing toward mandatory climate disclosures, assurance frameworks, and transition planning requirements.

A clear regional pattern is emerging: alignment with ISSB standards as baseline (IFRS S1 and S2), expansion of Scope 3 emissions reporting, and gradual introduction of third-party assurance.

While North Asia continues to lead on technical standard-setting, Southeast Asia is rapidly closing the gap through implementation-focused policies and taxonomies.

🇰🇷 South Korea: Structured Path to Mandatory ESG Disclosure

Financial Services Commission (FSC) released a draft roadmap for mandatory ESG disclosures, marking one of the most detailed transition plans in the region.

Key highlights:

• Alignment with International Sustainability Standards Board standards (IFRS S1 and S2) via the Korean Sustainability Standards Board (KSSB)
• Consultation period closed on March 31, 2026
• Phased implementation:
• 2028: KOSPI-listed firms with assets > KRW 30 trillion
• Gradual expansion to smaller listed firms thereafter: KRW 10 trillion+ in 2029
• Scope 3 emissions disclosure required from 2030
• Assurance initially voluntary, signaling future mandatory direction

👉 Why it matters: South Korea is setting a predictable compliance runway, giving companies time to build data systems and governance before full enforcement.

🇸🇬 Singapore: From Disclosure to Risk Integration

Monetary Authority of Singapore finalized Guidelines on Environmental Risk Management – Transition Planning, pushing financial institutions beyond disclosure into active risk integration.

Applicable for: banks, asset managers, and insurers

Core requirements:

• Systematic climate data collection
• Risk identification and prioritization high-risk exposures, and avoid hasty divestments, with sector-specific tailoring.
• Integration into strategy, governance, and decision-making

In parallel:

• Listed issuers must report Scope 3 emissions from FY2026
• Continued alignment with ISSB standards

👉 Why it matters: Singapore is shifting the focus from reporting compliance to financial risk management, raising expectations for boards and senior management.

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🇭🇰 Hong Kong: Moving Toward Mandatory Assurance

Hong Kong Exchanges and Clearing signaled progress toward mandatory sustainability assurance, alongside updates to its Sustainable Finance Taxonomy.

Key direction:

• Strengthening credibility of ESG disclosures
• Enhancing governance requirements for listed companies and financial institutions

👉 Why it matters: Assurance is becoming the next frontier of ESG regulation, and Hong Kong is positioning itself as a regional leader in high-integrity reporting.

🇨🇳 China: Mandatory ESG Reporting Begins

China advanced refinements to its climate disclosure framework, with a major milestone:

• Mandatory ESG reporting for large listed companies starting April 2026
• Covers FY2025 data
• Continued development of localized climate standards

👉 Why it matters: China’s scale makes this a system-level shift, significantly increasing the volume of ESG data across global supply chains.

🇯🇵 Japan 

Sustainability Standards Board of Japan closed its Exposure Draft consultation on March 25, 2026.

• Focus: GHG disclosure alignment with ISSB
• Expected implementation: 2027

Southeast Asia

Malaysia:

• Mandated ISSB-aligned disclosures from 2025 listed issuers
• Introduced support mechanisms for SMEs

Indonesia:

• Continued rollout of its Sustainable Finance Roadmap oward ISSB alignment, though not fully mandatory yet.
• Focus on implementation and sector-level guidance

👉 Why it matters: Southeast Asia is transitioning from policy adoption to execution, with increasing emphasis on practical implementation and market readiness.

Key Trend: ISSB Convergence Is Now Regional Reality

Across Asia, March 2026 confirms a decisive shift:

• ISSB (IFRS S1 & S2) is becoming the common baseline
• Scope 3 emissions disclosure is moving from voluntary to expected
• Third-party assurance is the next regulatory wave
• Transition planning is becoming embedded in governance frameworks

What Companies Should Do Now

• Prepare for Scope 3 data challenges: Build supplier engagement and data collection systems early
• Strengthen internal controls and governance: Anticipate assurance requirements
• Align disclosures with ISSB standards even where not yet mandatory
• Integrate climate risk into strategy, especially for financial institutions and listed firms

What to Watch Next

• Timelines for mandatory assurance across major markets
• Expansion of Scope 3 enforcement
• Greater interoperability between regional taxonomies
• Regulatory focus shifting from disclosure → decision-usefulness

Asia’s ESG regulatory shift is just getting started.

The companies that act early will have the advantage. 👇

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Reference

1. March 2026 Regulatory Updates ESG Book
2. Reporting academy
3. Datatracks
4. KPMG
5. Sustainability standard board of Japan
6. Fullerimpact
7. Envirosc