Does the court provide the interpreter?

The Civil Procedure Code provides for the court to arrange an interpreter where needed; arrangements and costs follow each court’s rules.

Must translations be filed in advance?

It depends on the court’s directions; some require certified translations to be filed before the hearing.

What qualifications must the interpreter have?

They must render the testimony accurately and completely as the court requires, and comply with the rules on taking the oath or affirmation before serving.

How far can your team support the case?

We prepare case-file translations, build the glossary, brief the interpreter and coordinate documents with your litigation team as the language and document adviser on the case.

Case study: interpreting and case-file translation for a civil hearing

The Civil Procedure Code provides for an interpreter where a party or witness cannot communicate in Thai; arrangements and costs follow each court’s own rules. Preparing certified translations of the case documents in advance makes testimony far smoother.

The situation

A foreign party in a Thai civil case who must give evidence

The party had to testify in a Thai court without Thai-language ability, and part of the case file was in a foreign language.

What actually blocked the file

Translations of some case documents had not been produced before the hearing date.
Technical contract terms were rendered inconsistently across documents.
It had not been checked whether the court required translations to be filed in advance.

The sequence we ran

Checked the court’s directions and rules on filing translations and arranging interpreters.
Built a case glossary so translation and interpreting used identical terminology.
Produced translations of the case documents needed during testimony.
Briefed the interpreter on the facts and terminology before the hearing.
Attended with a backup document set for reference during evidence.

Outcome

Testimony proceeded without pauses to clarify translations, and every document referred to was ready to hand.

What to prepare when requesting an interpreter in Thai court proceedings

Request for an interpreter lodged with the court hearing the case, stating the language required
Case number and the scheduled hearing date
Passport or identity document of the party or witness who needs the interpreter
Copies of the case documents to be translated or referred to during testimony
Certified translations where the court directs that they be filed in advance

This list reflects the requirements published by the responsible authority on the verification date. Authorities may change their conditions, so confirm with the source before lodging. Office of the Judiciary of Thailand · 2026-08-10 · source

How interpreters and certified translations are arranged for legal proceedings

Confirm with the court or the receiving body which language is needed and whether a registered or sworn interpreter is required.
Send the case documents in advance so the interpreter and translator can align terminology and proper names.
Prepare translations of documents to be tendered as evidence, with the translator’s certification in the form the court requires.
Documents issued abroad may need embassy or MFA legalization before they can be used in court.
Confirm the hearing date, time and mode of attendance (in the courtroom or via video conference) before the appointment.
On the day, the interpreter identifies themselves to the court and takes the required oath before interpreting begins.

The steps below are drawn from the procedures the responsible authority publishes itself, with the source and verification date shown. Some steps depend on the case and may change with the authority’s own announcements. Office of the Judiciary · 2026-08-10 · source

Common reasons an interpreter is not accepted in court or by an authority

The interpreter did not take the oath before interpreting: The court requires the interpreter to be sworn before performing the role; skipping this step leaves the interpretation open to challenge.
The need for an interpreter was not notified ahead of the hearing: Courts and agencies schedule interpreters in advance; raising the need on the day of the hearing usually results in a postponement.
The interpreter has an interest in the matter: A relative, employee or anyone with a stake in the outcome can be objected to; use a neutral interpreter unconnected to the result.
Using a spoken interpreter where a certified written translation is required: Spoken interpretation in the hearing room does not replace a certified written translation; documents filed with the court still need a signed written version.

Office of the Judiciary of Thailand · 2026-08-10 · source

What to watch next time

Build a case glossary first so translation and interpreting stay consistent.
Check the court’s directions on filing translations in advance.
Briefing the interpreter beforehand materially reduces error.

Questions this case raises

Does the court provide the interpreter?: The Civil Procedure Code provides for the court to arrange an interpreter where needed; arrangements and costs follow each court’s rules.
Must translations be filed in advance?: It depends on the court’s directions; some require certified translations to be filed before the hearing.
What qualifications must the interpreter have?: They must render the testimony accurately and completely as the court requires, and comply with the rules on taking the oath or affirmation before serving.
How far can your team support the case?: We prepare case-file translations, build the glossary, brief the interpreter and coordinate documents with your litigation team as the language and document adviser on the case.

Would rather not run this yourself?

We act as advisers from the first document review: we map which authority must sign in which order, prepare the file, and courier it for you. Fifteen-plus years of certification and legalisation work means we flag the usual rejection points before submission, not after.

Talk to our team Full Court interpreting guide