Certified Translation and Professional Interpreters in Thailand

Before a single word is translated, the key question is who will receive the translation and what standard they apply. Thai government offices — district offices, Land Offices, employment offices, the Immigration Bureau and the courts — generally accept a Thai translation certified by the translator or translation provider, and for many purposes they expect that translation to be legalised by the Ministry of Foreign Affairs together with the original foreign document.

Foreign authorities set their own rules. Australian immigration and many Australian agencies commonly require translations by translators certified by NAATI. Several European countries require a translator sworn or authorised by their own courts, and some embassies in Bangkok keep a list of translators whose work they accept. A translation that meets the Thai standard may therefore still be refused abroad, and the reverse is also true.

We record the receiving authority, the purpose and the standard at the start of each file. Where the requirement is unclear, we recommend that the client confirm it with the authority, and we prepare the translation to the stricter of the possible standards where that is practical, so that a second translation is not needed later.

The single most common problem in translated files is inconsistent spelling of names. Thai names have no single official romanisation, and the same person can appear as several different spellings across a passport, a degree certificate, a bank letter and a translation. Foreign names translated into Thai script can vary in the same way.

Our rule is that every translation in a file uses the spelling shown in the person's current passport, and that any variant on an original document is noted rather than silently corrected. Where a person has changed name, the name-change certificate is translated too, so that the chain from old name to new name is visible to the officer.

Dates require similar care. Thai documents usually use the Buddhist Era calendar, which runs 543 years ahead of the Common Era. We convert dates accurately and, for legal documents, show both forms where confusion is possible. Numbers in Thai script are converted to Arabic numerals and checked against the original.

An official document is more than its printed text. Stamps, seals, signatures, marginal notes, handwritten amendments and endorsements on the reverse are all part of it, and a receiving officer comparing the original with the translation expects to find each of them. A translation that reproduces only the main text can look incomplete.

We translate every visible element and indicate where a signature, seal or illegible note appears, using bracketed descriptions rather than guesses. Where a stamp is a legalisation or apostille, its text is translated in full, because it shows the officer that the document has been properly authenticated.

Layout is kept close to the original so the officer can match each section quickly. For multi-page documents, each page of the translation corresponds to a page of the original, and the translator's certification identifies the document translated, the number of pages and the languages involved.

Contracts, court judgments, powers of attorney, memoranda of association and board resolutions use legal terms that do not always have exact equivalents between Thai and other languages. A word-for-word translation can change the legal meaning, for example by confusing a lease with a usufruct, or a director's authority with a shareholder's.

For legal and corporate documents, our attorneys review the translation alongside the translator. Where a Thai legal concept has no direct equivalent, the translation keeps the Thai term in transliteration with a short explanation, so the reader is not misled. Where both language versions of a contract will be signed, we advise on which version prevails in case of conflict.

Working translations used only for understanding are prepared more quickly and marked as such. Certified translations intended for filing are prepared to the full standard. We make the distinction clear on each document so that a working translation is never filed by mistake.

Many Thai procedures take place in Thai and require the foreign party to understand what is said and signed. District offices may ask for an interpreter at marriage or divorce registration, Land Offices for leases and usufructs, and immigration or police officers for interviews. Courts generally allow interpreters for parties and witnesses who do not speak Thai, and may administer an oath to the interpreter.

Our interpreters work in the consecutive mode suited to these settings: they listen to a passage, then render it in the other language, so the record is accurate. Before the appointment they receive the documents to be discussed and a short glossary, so that names, amounts and legal terms are rendered consistently.

An interpreter's role is to convey what is said, not to advise. Where a client needs legal advice during a meeting or hearing, an attorney attends alongside the interpreter. We keep those roles separate so that the officer and the client both know who is speaking in which capacity.

Translated documents often contain sensitive personal data: identity numbers, family relationships, health information and financial details. We handle them under Thailand's Personal Data Protection Act, share files with translators only as needed for the work, and use secure channels for transfer. Translators and interpreters are bound by confidentiality obligations.

Turnaround depends on the length and complexity of the documents, the language pair and any certification or legalisation steps that follow. We give a working estimate for each file, and where a deadline is fixed by an authority, we plan backwards from it. We do not promise a completion date for steps controlled by government offices.

Clients receive the certified translation in the form the receiving authority accepts, together with a note of any further steps such as legalisation. Where the translation forms part of a larger file — a visa, a marriage registration, a company filing — it is delivered into that file directly so the client does not need to manage it separately.