What Is a Notary Public in Thailand? Notarial Services Attorneys Explained

Why Thailand uses Notarial Services Attorneys instead of notaries

In many civil-law countries a notary is a public office holder appointed by the state. Thai law has no equivalent office. Since the Lawyers Council of Thailand issued its Regulation on Registration of Notarial Services Attorneys B.E. 2551, licensed Thai lawyers who complete the Council's training can be registered to perform notarial acts for documents that will be used outside Thailand.

Foreign banks, courts, universities and government agencies usually describe what they need as 'notarised by a notary public'. In Thailand, a certificate from a registered Notarial Services Attorney is the standard way to meet that request, although the receiving authority always decides whether it is sufficient.

What a Notarial Services Attorney can do

Typical notarial acts include:

• Attesting that a named person signed a document in the attorney's presence after showing original identification.
• Certifying that a copy is a true copy of an original document produced at the appointment.
• Recording an affidavit or sworn statement made under oath or affirmation.
• Attesting signatures on powers of attorney, declarations, consent letters and company resolutions.
• Certifying identity documents for overseas account openings or compliance checks.

What a notarial certificate does not do

A notarial attestation does not make a document legally valid in itself, does not confirm that its statements are true and does not translate it. It cannot replace documents that only an embassy, a Thai district office or a court can issue, such as a civil registration certificate or a consular affirmation of freedom to marry.

It also cannot guarantee acceptance abroad. Each receiving authority sets its own form, language and authentication rules, which is why we ask for its written instructions before the appointment.

Notarisation, legalisation and apostille: the order of steps

Notarisation is usually the first step. Some destinations accept the notarised document directly. Others require the attorney's signature to be authenticated by the Legalization Division of the Department of Consular Affairs, and then legalised by the destination country's embassy in Bangkok.

Thailand acceded to the Apostille Convention on 30 June 2026 and the Convention enters into force for Thailand on 28 February 2027. Until then, documents normally follow the consular legalisation chain; from that date, an apostille may replace it for covered public documents where the Convention applies between Thailand and the destination country.

How to check the attorney and book an appointment

Every Notarial Services Attorney holds a certificate from the Lawyers Council's Registry of Signature and Document Attestation showing a registration number and validity date. You can confirm an attorney's status with the Lawyers Council of Thailand. The certificates of our seven attorneys are published on our team page.

Send us a photo of the document and the receiving authority's instructions by LINE @Thailegal or email, bring original identification for every signatory, and do not sign in advance. We confirm the notarial act, any further authentication and the expected timetable, and provide a formal quotation before work starts.

Which identity records and physical signing protocols are required during the appointment?

Executing a document before a Notarial Services Attorney requires strict adherence to formal identification protocols so the resulting attestation withstands scrutiny overseas. Signatories must never sign the document prior to the appointment. Under standards established by the Lawyers Council of Thailand, the attorney must personally observe the signing, confirm the signatory's identity, and verify that the individual executes the instrument willingly and with mental competence. If an instrument has been signed beforehand, the attorney cannot attest to execution; the document must be reprinted and executed anew directly in the attorney's presence.

Acceptable identification is strictly defined. Foreign nationals must present their original, unexpired physical passport. Overseas driving licences, foreign identity cards, or photocopies cannot substitute for the physical passport during a formal notarial act. Thai nationals must present their original Thai National Identification Card or unexpired Thai passport. When names across documents differ—such as discrepancies between a civil record, property deed, or corporate resolution and the primary passport—the individual must provide official supporting documentation, such as a formal name change certificate, to bridge the discrepancy.

Physical appearance remains an absolute regulatory requirement. Although digital platforms exist internationally, Thai Notarial Services Attorneys operate under domestic frameworks that do not authorise remote, digital, or video-link notarisation for international instruments. Every signatory or corporate officer whose signature is attested must attend an in-person appointment. At Thai Legal & Immigration Consulting Service Co., Ltd., appointments take place at our offices in Bangkok on Lat Phrao Soi 95 or in Khon Kaen, where original documents are examined directly under standard verification procedures.

How do foreign courts, banks, and corporate registries evaluate Thai notarial certificates?

Overseas commercial institutions, land registries, probate courts, and compliance departments routinely demand that submitted documentation be certified by a qualified professional. Because Thailand does not maintain civil-law notaries public, foreign organisations frequently seek clarification when reviewing attestations executed by Thai Notarial Services Attorneys. Commercial filings—such as appointing overseas directors, executing real estate powers of attorney, opening foreign bank accounts, or establishing subsidiaries—frequently require certified true copies of Thai Ministry of Commerce company extracts alongside director signature authentications.

Overseas compliance analysts conduct verification checks to confirm that the certifying practitioner holds the legal authority to authenticate signatures. Every Notarial Services Attorney registered under the Lawyers Council of Thailand Regulation B.E. 2551 holds a registration number and an official seal recorded in the council's registry. When foreign compliance departments request verification, they can examine the attorney's credentials directly through the Lawyers Council of Thailand. Nevertheless, foreign receiving authorities establish their own evidentiary thresholds, and their internal rules determine whether an attestation meets their requirements.

To prevent administrative complications abroad, clients should obtain specific formatting instructions from the overseas receiving authority before attending an appointment. Certain foreign registries accept a Notarial Services Attorney certificate directly, while others insist that the document complete consular legalisation through the Legalization Division of the Department of Consular Affairs and the destination country's embassy in Bangkok. Reviewing these instructions with our team of 7 Notarial Services Attorneys helps confirm that the document structure complies with overseas expectations prior to execution.

How are multi-language instruments and certified translations handled alongside notarial attestation?

Cross-border transactions frequently involve documents written in foreign languages or requiring translation from Thai into English or other languages. It is essential to distinguish between notarial attestation of execution and certification of a translation. When a Notarial Services Attorney attests a signature on a foreign-language document, the attorney certifies the identity of the signatory and the formal act of signing. The attorney does not certify that the substantive statements within the text are legally accurate or correct under the foreign law governing the transaction.

When public documents issued by Thai district offices—such as birth certificates or marriage records—must be presented abroad, they require translation and attestation. The original Thai public record is translated into the destination language by a qualified translator. The translator then executes a formal declaration confirming that the translated text represents an accurate, faithful rendition of the original instrument. A Notarial Services Attorney subsequently attests the identity and signature of the translator on the declaration, creating an authenticated bundle suitable for subsequent legalisation steps.

Foreign embassies, government agencies, and courts maintain strict guidelines regarding translation certifications. Some foreign missions insist that translations be executed exclusively by accredited translation bureaus, whereas others permit independent translators provided their signatures are formally attested by a registered Notarial Services Attorney. Because receiving authorities decide acceptance and maintain sovereign authority over evidentiary standards, submitting the destination authority's explicit translation guidelines to our Bangkok or Khon Kaen offices beforehand ensures documents align with the relevant procedural pathway.

How will cross-border authentication change when the Apostille Convention takes effect in 2027?

Thailand formally acceded to the Hague Apostille Convention on 30 June 2026, marking a significant milestone in cross-border document authentication. However, accession does not alter authentication procedures immediately. The Convention enters into force for Thailand on 28 February 2027. Until that operational date arrives, consular legalisation remains strictly in effect. Documents originating in Thailand intended for overseas use must continue along the established administrative pathway: initial attestation by a registered Notarial Services Attorney, authentication at the Legalization Division of the Department of Consular Affairs within the Ministry of Foreign Affairs, and final legalisation at the destination country's embassy in Bangkok.

Starting on 28 February 2027, the procedural pathway will change significantly for documents moving between Thailand and other contracting parties to the Convention, provided those states have not objected to Thailand's accession. Instead of obtaining multiple legalisation stamps from both the Ministry of Foreign Affairs and foreign embassies, documents will require only an apostille certificate issued by Thailand's designated competent authority. For private documents, such as commercial contracts and powers of attorney, attestation by a registered Notarial Services Attorney will continue to serve as the prerequisite verifying the underlying signatures before the competent authority can affix an apostille.

The introduction of the apostille framework will not eliminate consular legalisation entirely. Non-signatory nations will remain outside the Convention, meaning documents bound for those jurisdictions must continue to undergo full consular legalisation even after 28 February 2027. Furthermore, receiving authorities always determine whether a specific instrument meets their legal standards. The 7 Notarial Services Attorneys at Thai Legal & Immigration Consulting Service Co., Ltd., operating from Bangkok (Lat Phrao Soi 95) and Khon Kaen, assist clients via LINE @Thailegal in navigating the correct authentication chain for their target jurisdiction.

Related services

• Notarial Services Attorney

Frequently asked

Sources & references

1. Lawyers Council of Thailand — checked 2026-11-04
2. Department of Consular Affairs – Legalization — checked 2026-11-04
3. HCCH – Apostille Convention status table — checked 2026-11-04