Notarising Corporate Documents in Thailand for Cross-Border Transactions
8 min read · Updated 2026-08-10
In short
Prove three things: the company exists, the signatory is authorised, and the signature is genuine. That means a current DBD affidavit, a properly minuted resolution, and a notarial certificate for the director's signature — all legalised together as one bundle.
Corporate files fail for a different reason than personal ones. The documents are usually well drafted, but the pack does not close the loop between the company record and the human being signing. Foreign banks and registrars check that link first.
Start with a current company affidavit
The Department of Business Development extract shows registered capital, objectives, directors and the signing-authority clause. Order a recent copy; counterparties frequently reject an extract older than a few months.
Match the resolution to the signing clause
If the affidavit requires two directors signing jointly with the seal, a resolution signed by one director will not authorise the transaction, no matter how it is certified. Read the clause before drafting.
Certificate of incumbency and specimen signatures
Many offshore banks want a separate statement of who currently holds office, with specimen signatures certified by the attorney. Prepare it alongside the resolution so both carry the same date and identity references.
Legalise the pack as a unit
Send the whole bundle through the Department of Consular Affairs and any required embassy together, so the dates and reference numbers stay coherent. A resolution legalised two months after the affidavit invites questions.
Plan for parallel jurisdictions
Group transactions often need the same pack accepted in several countries at once, each with its own rules on age and format. Identify the strictest destination and build to that standard, then reuse.
Frequently asked questions
Can a director sign remotely from abroad?
The signature has to be witnessed where it is made, so a director outside Thailand normally notarises locally and legalises in that country. The Thai-side pack then travels separately and both are combined at the counterparty.
Do documents need to be in English?
Thai official records are issued in Thai. A certified English translation is normally attached and legalised together with the original.
Can your team handle the whole process for me?
Yes. Our practitioners review the file before submission, deal with the Thai authorities and the destination embassy on your behalf, and report back at each stage. Message LINE @Thainotary or call 094-895-8999 with a photo of what you already hold and the destination country, and we will map the correct chain for your case.
What should I prepare before the first consultation?
A scan or clear photo of every document you already have, the destination country and receiving authority, and the date you need the file ready. From that we can list the missing items, the correct order of certification, and an approximate window before any work starts.
Would you rather we handled it?
Our practitioners review the file, deal with the authorities and report at each stage. Call 094-895-8999 or message LINE @Thainotary.