Certificate of IncumbencyStandard — 2–3 business days

Additional frequently asked questions

What if the destination authority rejects the document?

Ask for the rejection reason in writing. Most rejections come from wording of the attestation clause, the order of the legalisation chain, or a translation that does not match the required format — each of which can be corrected without redoing the whole set.

Can the process be started from outside Thailand?

Document review, drafting the attestation wording and coordinating with authorities can all be done remotely. Only steps that legally require personal appearance must be completed before the attesting attorney or through a channel the destination accepts. Scope and requirements are confirmed case by case by phone, LINE or email.

Does Thailand have a Notary Public in the common-law sense?

Thailand has no common-law notary. The equivalent is a Notarial Services Attorney registered with the Lawyers Council of Thailand under Royal Patronage. Foreign authorities, embassies and universities generally accept this attestation where a notarised document is required. Scope and requirements are confirmed case by case by phone, LINE or email.

Do I have to sign in person before the attorney?

For signature attestation, yes — the signer must appear with an original passport or Thai ID card and sign in the attorney's presence. Certified true copies and certain fact attestations can be handled from originals without a fresh signature, depending on what the receiving authority requires.

Can the attestation be used abroad immediately?

It depends on the destination. Many countries additionally require legalisation by the Department of Consular Affairs, Ministry of Foreign Affairs, and sometimes by their own embassy in Bangkok. Confirm the receiving party's chain before starting so the work is not repeated.

Do Thai-language documents need translation first?

If the recipient is a foreign authority, an English translation (or the official language of that country) is normally required, and the translation itself may need certification. The correct order is translate, certify the translation, then legalise.

In depth: the real requirements and why documents get rejected — Notary Public

Written from the competent authority's published rules, not marketing copy.

Notarial work in Thailand is performed by lawyers registered with the Lawyers Council of Thailand who hold the notarial services endorsement. Verifying that the certifier's registration is current is a step the document owner can and should perform before discussing wording or scheduling.

Conditions you actually have to clear

• When signing for a company, a recently issued company affidavit and evidence of signing authority consistent with the registered restrictions are required.
• The certificate must state the date, the place, the signatory's name, the identification method, and the certifier's registration number; a missing element makes the certificate incomplete abroad.
• Thai-language documents intended for foreign use need a translation permanently bound to the original rather than loosely attached.

Common causes of rejection

• A company affidavit older than the destination's accepted age leaves signing authority unproven as at the certification date.
• Re-binding the file or removing a seal after certification breaks continuity and forces the process to restart.

Once the destination country and the receiving office are known, the required certificate form and the following steps can be fixed immediately. Having our team review the case first substantially reduces repeat work.