ฉบับภาษาไทย: อ่านหน้านี้เป็นภาษาไทย
Which language should govern a bilingual Thai–English contract?
Short answer
Pick one language as the controlling text and say so in a clause — never leave both 'equally authentic'. If the contract is likely to be enforced in a Thai court, the Thai text is the pragmatic choice, because a Thai court works from a Thai translation anyway.
Where a bilingual contract declares both versions equally authoritative, every drafting divergence becomes a live dispute. Thai courts conduct proceedings in Thai under the Civil Procedure Code, so an English-controlling contract will still be translated for the file — and the party who did not commission that translation loses control of the wording at the worst moment. A single controlling-language clause removes an entire category of argument.
If the commercial reality requires English to control (foreign parent, foreign arbitration seat), then pair it with an arbitration clause seated somewhere that will apply it, and make sure the Thai text is a checked translation rather than a marketing rendering. Whatever you choose, have one reviewer read both texts against each other for the clauses that matter — price, term, termination, liability, governing law — rather than relying on the translator to catch a legal mismatch. Scope, turnaround and fees are confirmed by IVC staff by phone, LINE or email — this site does not publish prices.
Reviewed as of 2026-08-04. General guidance only, not case-specific advice and not a guarantee of outcome. Government fees, conditions and processing times are set by the responsible authority and can change. This site does not publish prices — please ask our staff.
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