Thailand makes ISSB-aligned sustainability reporting mandatory
Thailand’s Securities and Exchange Commission (SEC) has issued rules requiring listed companies to report sustainability and climate information in line with International Sustainability Standards Board (ISSB) standards. The largest companies will report first, in 2028, addressing information from 2027.
Other listed companies and investment entities, such as real estate investment trusts, will follow in phases through 2031. Greenhouse gas emissions must be verified by assurance providers. The path to mandatory disclosure is designed to be gentle, with a staggered implementation that includes an exemption from Scope 3 disclosure and no comparative climate figures in the first year.
Thai listed companies have reported on sustainability since 2022, but could choose their own framework. Swapping a menu of frameworks for a single global baseline is a big step for comparability. The staggered implementation reliefs are designed to give companies time to put data systems in place, which makes this the moment to design them for machine-readable output using the IFRS Sustainability Disclosure Taxonomy. Retrofitting digital reporting later is always slower.
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