Thai Customs e-Form D — what changed in 2026

The Form D Certificate of Origin under the ASEAN Trade in Goods Agreement (ATIGA) allows goods originating in Thailand to receive preferential tariff treatment when imported into other ASEAN member states. The e-Form D system has been refined throughout 2025 and is fully mandatory for most HS codes in 2026.

Key changes: • Direct e-submission via the Customs portal — no more paper printouts • ePCO (Electronic Preferential Certificate of Origin) replaces wet-stamped originals • Cross-border verification with destination customs authorities is automated • Self-certification under ASEAN Wide Self-Certification (AWSC) is available for certified exporters

For everyday exporters, the process is faster but requires accurate HS code declarations and origin criteria (WO, CTC, RVC 40%). Misdeclaration leads to retroactive duty assessments at destination.

If you ship to Singapore, Malaysia, Vietnam, Indonesia, Philippines, Cambodia, Laos, Myanmar, or Brunei — verify your Form D process is up to date.