Customs and Trade Lawyers in Thailand — Classification, Valuation and Audits
Customs exposure builds up quietly and arrives as several years at once
Customs exposure builds up quietly and arrives as several years at once
Importers rarely discover a customs problem at the border. They discover it during a post-clearance audit, when several years of declarations are examined together and a difference in tariff classification or declared value is applied backwards across every shipment in the period. By then the underlying decision — how a product was classified, how royalties or assists were treated in the declared value, whether a duty privilege was correctly applied — is years old and repeated thousands of times. We act on both ends of that: reviewing the positions while they can still be corrected cheaply, and defending them when an assessment has already been issued.
What we cover
When goods are held, time costs more than the argument does
A shipment stopped over classification or value generates storage, container detention and, if it carries production materials, a stalled line. Those costs accumulate daily while the substantive dispute would take far longer to resolve. The workable sequence separates the two: secure release through the available guarantee route first, then contest classification or valuation properly. Businesses that fight the substance while the cargo sits often end up paying more in demurrage than the duty ever represented.
Privileges create an obligation to reconcile, not just a saving
Duty exemptions under BOI promotion, free-zone status or an origin claim under a trade agreement all come with a record-keeping duty attached. The exposure that surfaces in audit is usually not fraud — it is an accumulated mismatch between materials imported under privilege and materials actually consumed and exported, or origin documentation that cannot be produced for shipments made years earlier. Reconciling production formulas and usage reports before a notice arrives works considerably better than reconstructing them afterwards.
Related-party pricing is examined from two directions
Where goods are bought from a parent or affiliate, the declared value attracts attention because the price is not the result of an arm's-length negotiation. What complicates it is that the same pricing is also examined by the revenue authorities from the opposite direction: a value low enough to reduce duty is a value that raises questions on the income tax side, and vice versa. Positions that were set independently by two advisers frequently contradict each other, and the contradiction is visible to both authorities.
A classification decision is repeated with every shipment
Classification is treated inside most businesses as an operational detail delegated to a broker. It is better understood as a decision made once and then executed thousands of times, which is precisely what makes an error expensive: the correction is applied across the whole period, not to one entry. Products that warrant a considered position at the outset are those where the classification is genuinely arguable — new product categories, goods with multiple functions, and items imported partly assembled.
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Frequently asked questions about Customs & Cross-Border Trade Compliance
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Further reading
Thai Customs has queried your declared value or opened a post-clearance audit on shipments that already cleared. What triggers an audit, how declared value and classification are tested, the objection and appeal route, and the evidence pack to assemble first.
11 min readBusiness LawA guide for factory owners and managers in Thai industrial estates — labor and termination law, machinery-import customs, BOI privileges, land holding, environmental and safety compliance, and foreign-worker permits. From a 39-year law firm.
4 min readForeign Investment GuideChoosing a market-entry route before committing capital. Who is the importer of record and what that commits each party to, the distributor agreement terms nobody drafts until it is too late, warranty exposure by route, and a decision table by volume, margin, control and speed.
10 min read