Apostille and Legalisation Tips for Documents from Thailand

A document signed or issued in Thailand isn’t automatically accepted abroad. Foreign courts, banks, universities and government offices often want proof that the signature or seal is genuine. That proof comes through legalisation. From 2027 it will also be possible through an apostille. These tips will help you avoid the most common delays.

Tip 1: Ask the receiving organization exactly what it needs

Before anything is signed or translated, ask the organization abroad what it requires. Does it want notarization, legalisation, a certified translation, or all three? Does it need the original or a certified copy? Is there a deadline or a maximum age for the document? Getting this in writing saves the most time.

Tip 2: Understand the current legalisation route

Until the Apostille Convention takes effect for Thailand, a document for use abroad usually goes through these steps:

1. Prepare the document. Notarize the signature or certify the copy. If the document is in Thai, get a certified translation.
2. Ministry of Foreign Affairs. The Department of Consular Affairs legalises the signature or seal on the document.
3. Embassy of the destination country. Many countries also ask their embassy in Bangkok to legalise the document.

Each authority sets its own processing time, so plan for several working days on top of your notary appointment. Our Legalisation service handles these steps for you.

Tip 3: Know what changes on 28 February 2027

Thailand has joined the Hague Apostille Convention, which is scheduled to take effect for Thailand on 28 February 2027. After that date, a Thai public document going to another member country should need a single apostille instead of the full legalisation chain. Keep in mind:

• An apostille only works between member countries. Documents for non-member countries will still need legalisation.
• Some countries may object to Thailand’s accession. In that case, the apostille won’t apply between those two countries.
• Until the effective date, the current legalisation process still applies.

See Apostille Requirements for the latest details.

Tip 4: Check the details before you submit

• Names, passport numbers and dates must match exactly across the document, the translation and your ID.
• Don’t staple, unstaple or remove pages from a notarized or legalised document.
• Keep copies of every page, including the certificates attached to it.
• Allow extra time around Thai public holidays, when government offices are closed.

Tip 5: Let one team handle the whole process

Notarization, translation, MFA legalisation and embassy legalisation all depend on each other. A mistake at one step can send you back to the start. We can notarize, translate and legalise your documents as one job, and we’ll keep you updated at each step.