Key Takeaways
- Incoterms vs. Customs Value: Incoterms are private contracts. Customs uses them as a starting point to construct the CIF value.
- FOB/EXW Adjustments: Importers must add actual international ocean/air freight and marine insurance to construct the CIF value.
- Default Freight Assessment: Lacking actual freight invoices, customs may apply standardized freight tables to assess duty bases.
- DDP Liability Trap: Under DDP terms, the importer of record remains legally liable to Thai Customs for any declaration errors, not the foreign seller.
Statutory Value Declarations and Adjustment Under Section 50
Section 50 of the Customs Act B.E. 2560 requires importers to declare the correct customs value based on CIF terms. If goods are purchased under EXW (Ex Works) or FOB (Free on Board) agreements, the price stated on the commercial invoice covers only the physical cargo. Importers must adjust the declaration base by adding inland trucking costs in the exporting country, port handling charges, international ocean/air freight, and insurance premiums to construct the lawful CIF basis.
DDP (Delivered Duty Paid) Terms and Importer Liability
Many importers prefer DDP terms because foreign suppliers agree to manage transportation and pay local import taxes. However, under Thai customs law, the importer of record whose name appears on the import entry is the primary debtor of the customs debt. In the event of a post-clearance audit finding undervalued declarations or incorrect HS classifications, the Thai importer faces penalty assessments; legal recourse cannot be redirected to the overseas vendor.
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To ensure compliant customs entries, importers must request cargo freight invoices from their freight forwarders to include in the customs declaration calculations. In the absence of an individual shipment insurance certificate, a default insurance rate (usually 1% of the FOB/FCA value) must be calculated to complete the CIF duty base. Omission of insurance values is one of the most common reasons for post-audit tax assessments.
Official Reference Agencies and Regulations
- Thai Customs Department: Statutory sections on importer liabilities and criminal penalties under the Customs Act B.E. 2560.
- Ministry of Finance & Appeals Committee: Ministerial decrees on customs valuation and formal tax appeal tribunal procedures.
While Incoterms define commercial roles and cost allocations between buyers and sellers, Thai customs laws mandate that import values be declared on a CIF (Cost, Insurance, and Freight) basis under Sections 50 and 51. Declaring purchase prices under EXW or FOB terms without adjusting to include international freight and insurance is a misdeclaration offense.
Frequently Asked Questions
Q: If goods are purchased under CIF terms, do we need to make price adjustments?
A: No. The CIF price already incorporates the cost of goods, ocean/air insurance, and international freight, matching the statutory tax base.
Q: What happens if customs finds that freight charges were omitted under FOB imports?
A: The importer must pay the short-paid duty, a monthly surcharge of 1% on the missing tax, and faces potential fines for misdeclaration under Section 243.
