Notary Public vs Apostille vs MFA Legalization
Which one, when, and in what order?

In Thailand, a Notary Public is technically called a Notarial Services Attorney, a lawyer registered with the Lawyers Council of Thailand under the Lawyers Council Regulations on the Registration of Notarial Services Attorneys B.E. 2551 (2008), issued under section 27 of the Lawyers Act B.E. 2528 (1985).

Five categories of work:

• Signature witnessing — signer signs in person before the attorney
• Certified true copy — passport, national ID, house registration, transcripts, professional licences
• Oath / affirmation — for affidavits and statutory declarations
• Certification of identity / directors / corporate seals — for cross-border transactions
• Certificate of facts — proof of life, residence, date/time attestation

Every Thai notarial certificate carries a red seal, holographic sticker, and a 5-digit registration number verifiable in the Lawyers Council database. Bilingual TH/EN notarial certificate is standard.

MFA Legalization is issued by the Nationality & Legalization Division, Department of Consular Affairs, Ministry of Foreign Affairs of Thailand (Chaeng Watthana Road, Bangkok). It certifies that the seal and signature of a Thai government body — or a Thai Notary Public — are genuine and legally authorised.

Statutory basis: MFA Regulation on Document Certification B.E. 2539 (1996) and the Vienna Convention on Consular Relations 1963.

Seal types:

• Translation certification — source + translation, blue seal
• Signature certification — of an authorised officer, red seal
• True-copy certification — of a public document, green seal
• Apostille — new stamp effective 28 Feb 2027, replaces destination-embassy legalisation

Important: Legalization cannot be done in isolation — a Thai public source document or a Notary certificate must always precede it.

Apostille is the universal certificate created by the Hague Convention of 5 October 1961 Abolishing the Requirement of Legalisation for Foreign Public Documents, currently with 130 contracting parties.

Thailand officially became a party effective 28 February 2027 — the designated Competent Authority is the MFA Department of Consular Affairs.

What changes:

• Thai documents bearing an Apostille are accepted immediately in all 130 Hague states — no destination embassy step
• Turnaround drops from 5–15 business days to 2 days (or 1-day rush)
• Total cost drops 40–60% versus full embassy legalisation
• Countries with biggest impact: USA, Japan, Korea, Australia, UK, Germany, France, Spain, Italy, Netherlands, New Zealand

Limits: Non-Hague countries (mainland China excluding HK/Macau, some Middle-East states, Vietnam, Malaysia) still need Notary + MFA + destination embassy the old way.