Notarisation of Bank Forms and Specimen Signatures — Thailand (2026)

Overseas banks and financial institutions commonly require non-resident clients to sign before a notary — for account opening, insurance and fund claims, and inheriting overseas accounts.

The institution's current, unsigned form · Original passport · The bank's letter or email setting out its certification requirements

Signature witnessing and specimen signature verification

Using a standard stamp when the bank prescribes specific certification wording · A form date that differs from the notarisation date · Banks asking for an apostille, which Thailand does not issue — the MFA plus embassy route is used instead

Send a colour scan for the bank's pre-check, then courier the originals.

Same day. Fees are based on the number of documents and stamps, and you get a written quote before any work starts.

No. Thailand is not a party to the Hague Apostille Convention, so Thai documents intended for use abroad follow the legalisation route: certification by a notarial services attorney, then legalisation at the Department of Consular Affairs (Ministry of Foreign Affairs), then attestation at the destination country's embassy or consulate in Thailand. Check the current status with the HCCH and the Department of Consular Affairs before you act.

Thailand has no notary public office in the common-law sense. Instead, lawyers registered with the Lawyers Council of Thailand under its 2008 regulation act as Notarial Services Attorneys, and their certifications are the form accepted by foreign authorities.

Yes for signature certification — you sign in the attorney's presence with an original passport or Thai ID. For a certified true copy, the original document must be produced.