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Search for any section of the Thai Civil and Commercial Code and you will find English translations of Thai law on half a dozen websites, most of them carrying a one line disclaimer that nobody explains. So here is the question every expat eventually asks: is there an official English translation of Thai law? The short answer is no. The Thai text published in the Royal Gazette is the only text with legal force. Every English version, including the ones government bodies publish and the ones we publish, is an aid to understanding, not the law itself. What that means for you depends on which of three situations you are in: reading a statute, signing a contract, or dealing with a court or ministry. This page walks through all three, cites the rules that govern each, and explains what “certified translation” actually means in Thailand.

Why is there no official English translation of Thai law?

Thai law takes effect through publication in the Royal Gazette (ratchakitcha), and the Gazette publishes in Thai. That single fact settles the status question. The Office of the Council of State (Krisdika), the government’s own law drafting agency, prepares English translations of major statutes through its Legal Opinion and Translation Section and states that it provides them for information purposes only. The Thai text as adopted and published in the Government Gazette remains the sole authoritative version.

The supply of English versions has actually grown. The Act on Legislative Drafting and Evaluation of Law B.E. 2562 (2019) pushed state agencies to disseminate the laws they administer, and the Office of the Council of State now publishes translation glossaries and standards so that agencies translate consistently. The result is more English text from official sources than ever before, none of it authoritative. An English version on a ministry website carries no more legal force than one on a law firm blog. Both are commentary on the Thai text.

This is not a Thai peculiarity. Most civil law countries treat the enacted text in the national language as the only binding version. What makes it bite harder in Thailand is the size of the gap between the people the law governs and the language it is written in. Hundreds of thousands of foreign residents own condos, sign leases, marry, run companies and write wills under rules they can only read second hand.

Can you rely on an English translation of a Thai statute?

You can rely on it to understand the law. You cannot cite it as the law. If a dispute turns on the exact words of a provision, the Thai text decides it, and a translation that paraphrases or compresses can mislead you at exactly the moment precision matters.

Translations also go stale. Thai statutes change through amending acts, and the English versions circulating online often reflect the text as it stood years ago. The Civil and Commercial Code provisions on marriage, for example, changed substantially when the Marriage Equality Act took effect in January 2025, and English versions predating it still describe “husband and wife” rules that no longer match the Thai text. Before relying on any translated section, check when it was translated and what has amended the Thai original since.

This is why we publish our ประมวลกฎหมายแพ่งและพาณิชย์ และ ประมวลกฎหมายอาญา with the Thai text beside the English, section by section. You should never have to trust a translation alone, ours included. When the two columns sit together, you or your lawyer can always check the words that actually govern. The rest of our Thai law library follows the same principle.

Bilingual contracts: which language wins in Thailand?

Contracts are where the translation question stops being academic. Section 14 of the Civil and Commercial Code sets the default rule: where a document is executed in two versions, one in Thai and one in another language, and the two versions differ, and it cannot be established which version the parties intended to govern, the Thai version governs.

Three points inside that sentence decide real disputes:

It is only a default. The parties can choose. A prevailing language clause stating that the English version governs is valid, and it displaces Section 14 entirely. Courts reach the Thai-wins default only when they cannot ascertain what the parties intended.

It applies to documents executed in two versions. A contract signed in English only, later translated for a court or an officer, is not a two version document. The English original remains the contract. Section 14 answers a different question: two signed versions, one discrepancy, no governing language chosen.

Silence is the trap. Bilingual contracts in Thailand are routinely prepared by the Thai side, and if no clause names a governing language, the Thai version wins any mismatch. A foreign buyer who negotiated in English and signed both versions may find that the operative promises live in a text they never read. Our ข้อตกลงก่อนสมรส และ พินัยกรรมไทย are drafted bilingually for exactly this reason: the two texts are prepared together, checked against each other, and the document says which version controls.

What happens to English documents in a Thai court?

Section 46 of the Civil Procedure Code requires court proceedings and every paper in the case file to be in Thai. A document in a foreign language enters the file with a Thai translation attached, and the translator attests to its accuracy. The court then works from the Thai translation.

Follow the consequence through: if you sue on your English contract in a Thai court, the version the judge reads is a Thai translation made for the litigation. Your carefully negotiated English wording passes through a translator before it reaches the bench, and the other side can challenge the translation. The same applies at ministries and district offices, which work in Thai and require translations of foreign documents for most registrations. Getting the translation fought over is a litigation tactic in its own right, and budgeting for competent legal translation is part of budgeting for a Thai dispute. See our guide on การขึ้นศาลในประเทศไทย for the wider procedure.

What does “certified translation” mean in Thailand?

Less than most people assume. Thailand has no sworn translator system. No Thai court or ministry maintains a national register of licensed legal translators, and no law creates the office of sworn translator that exists in France, Germany or Spain. When a Thai authority asks for a “certified translation”, it usually means a translation that carries the translator’s or agency’s signed certification of accuracy, sometimes with further legalization on top.

What exists instead, in practice:

MFA legalization. The Department of Consular Affairs of the Ministry of Foreign Affairs legalizes documents and their Thai or English translations for official use. Legalization verifies signatures and seals in the chain. It does not examine the translator’s competence and it does not make the translation authoritative. The process, and the changes coming to it, are covered in our guide to the legalization of documents in Thailand.

Professional certification. The Southeast Asian Association of Professional Translators and Interpreters (SEAProTI) certifies translators to its own standards, and the Department of Consular Affairs has listed SEAProTI certified translators among recommended providers. That is professional recognition, and useful, but it is not a state licence.

The fraud to avoid. The Ministry of Foreign Affairs has publicly warned about agencies advertising themselves as “MFA certified translators”. The Department of Consular Affairs does not authorize or license any translator, so the claim is false wherever it appears. An agency that leads with it has told you something useful about its reliability.

How do you protect yourself? A short checklist

The rules above compress into five habits:

1. Treat every English statute text as a map, not the territory. Use it to understand, then have a lawyer confirm the current Thai text before you act on a specific section.
2. Put a prevailing language clause in every bilingual contract. Decide which version governs and say so. Silence hands the decision to Section 14.
3. Have the Thai version reviewed before you sign it. If the Thai text governs, or might, the Thai text is the contract. Signing a Thai version you have not had checked is signing blind.
4. Keep both versions consistent through amendments. Parties often amend the English version and forget the Thai one. Every discrepancy you create is a future dispute.
5. Budget for translation in any dispute or registration. Courts and ministries work in Thai. Competent legal translation, done once and done well, is cheaper than a translation battle in court.

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The bottom line

No English translation of Thai law is official, and none will be while the Royal Gazette publishes in Thai. That is not a reason to stop reading translations. It is a reason to read them the right way: as guides that point you to the Thai text that governs, checked for currency, and backed by a prevailing language clause whenever you sign in two languages. We built our bilingual code library so the Thai text is always one glance away from the English. When a section of Thai law is about to decide your money, your marriage or your case, read both columns, or have someone read them for you. ThaiLawOnline has practised Thai law for foreign clients since 2006, and translating the law, section by section, next to its source, is how we keep ourselves honest too. If a bilingual document or a translated statute is about to bind you, จองคิวปรึกษา and we will read the Thai text with you.