Thailand’s Commitment to Global Tax Transparency Advances with GloBE MCAA Signing

The move signals Thailand's commitment to adhere to international tax standards, in support of its goal of becoming a future member of the OECD

Thailand has taken another significant step in aligning with international tax transparency standards by signing the Multilateral Competent Authority Agreement on the Exchange of GloBE Information (GloBE MCAA). The signing follows Cabinet approval on 16 June 2026 and supports the implementation of the OECD’s global minimum tax framework for large multinational enterprise (MNE) groups. 

Thailand was officially added to the OECD’s list of GloBE MCAA signatories on 8 September 2026. Thailand’s participation in the GloBE MCAA will enable the automatic exchange of GloBE Information Returns (GIRs) between participating jurisdictions. The agreement is designed to support the administration of the OECD’s Pillar Two rules, which seek to ensure that large multinational groups are subject to a minimum effective tax rate of 15% regardless of where they operate. 

The exchange framework is expected to reduce administrative burdens for multinational groups by limiting the need to submit equivalent information separately in multiple jurisdictions. It should also provide tax authorities with a more efficient mechanism for reviewing compliance with global minimum tax requirements while enhancing transparency and cooperation between tax administrations. 

Thailand is expected to commence its first exchanges of GloBE Information Returns with partner jurisdictions by December 2027. Multinational groups with operations in Thailand should continue monitoring developments and assess their readiness for the new reporting and compliance landscape.