Local adoption of IFRS S1 / S2 (ISSB Standards)
Thailand's SEC will require listed companies to apply IFRS S1 and S2 on a climate-first, phased basis, starting with Scope 1 and 2 GHG emissions backed by third-party assurance. In November 2025 it moved SET50 and SET100 companies back one year, so SET50 companies apply the standards from 2027 and report in 2028, while mai companies and listed trusts and funds come last, applying from 2030 and reporting in 2031.
- Enforcement
- Mandatory under approved principles; implementing regulations pending
- Effective date
- Effective year / reporting year: SET50 constituents (December 2026 index review) 2027 / 2028; SET100 constituents (December 2027 index review) 2028 / 2029; all other SET-listed companies, including IPOs, 2029 / 2030; mai-listed companies and listed REITs, infrastructure funds, infrastructure trusts and property funds, including IPOs, 2030 / 2031.
- Covered entities
- SET- and mai-listed companies (Thai or foreign incorporated) and IPO applicants, excluding non-listed companies and LiVEx issuers; listed REITs, infrastructure trusts, property funds and infrastructure funds