Korea’s DMTT: Key Compliance Considerations
2026.10.08.
Korea has introduced a Domestic Minimum Top-up Tax (DMTT) as part of the OECD Pillar Two Global Anti-Base Erosion (GloBE) Rules, effective for Fiscal Years beginning on or after January 1, 2026. DMTT is treated as a Qualified Domestic Minimum Top-up Tax (QDMTT) if it is functionally equivalent to the GloBE Rules and is implemented and administered consistently with the GloBE Rules and Commentary.
For calendar-year companies, the first filing and payment is due by March 31, 2028. Companies should begin preparations now by assessing scope, assembling the required data and establishing an appropriate corporate income tax accounting framework. This Legal Update outlines key compliance obligations and practical action points for affected companies.
For more details, please refer to the full report attached below.
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