Apostille for Thai documents — preparing for the entry into force
Thailand has acceded to the Apostille Convention, which enters into force on 28 February 2027. Until that date, Thai documents used abroad still follow the existing route: legalisation at the Department of Consular Affairs, then a further stamp at the destination embassy. Planning ahead lets you decide whether to file now or wait.
Documents to prepare
- The original or a freshly issued certified copy from the issuing office (district registrar, university, court)
- An English translation matching the original line by line, including stamps and signatures
- A copy of the document holder's passport so spellings stay consistent
- Any written requirement from the receiving authority
- A power of attorney if someone files on your behalf
Step-by-step procedure
1. Check whether the destination is a member state
Non-member states will still need consular legalisation plus embassy attestation after the entry into force.
2. Obtain a fresh certified copy
Freshly issued copies carry verifiable signatures and stamps.
3. Translate and proofread twice
Numbers, dates, authority names and passport spelling are checked by a second reviewer.
4. File under the route currently in effect
Today that means legalisation at the Department of Consular Affairs followed by the destination embassy or consulate.
5. Plan for the transition window
If your deadline sits close to 28 February 2027, prepare for both routes so travel plans are not disrupted.
Pitfalls to avoid
- An apostille is not available yet — before the entry-into-force date, authorities accept only the existing legalisation route.
- An apostille certifies the signature and seal, not translation accuracy; the receiving body may still request a certified translation.
- Non-member states will continue to require embassy attestation.
- Documents issued long ago are often sent back with a request for a fresh copy.
Advisory tips
- Tell us upfront if several countries are involved so one set of originals can serve them all.
- Keep colour scans of every stamped page before the documents leave Thailand.
- Ask the receiving authority in writing which certification they accept and keep the reply.
Let us handle it end to end
Prefer not to handle the queues yourself, or worried about a rejection? Send us photos of your documents for a free pre-check. We handle the full chain — obtaining certified copies, translation, certification and submission — and keep you updated at each step. Reach us on LINE, phone or email during business hours.
Let us handle it end to end