Working under a Long Term Resident (LTR) visa — what should you know about notarial signature certification?

The subject of this page is “Working under a Long Term Resident (LTR) visa”, so it covers both the requirements attached to this document set and the order the steps must follow. Check first whether the issuing office of the source document is one the destination recognises. The condition most often overlooked is that name spelling must match across every document in the set. The terms that frame this page are Working · under · Long · Term. With a fixed filing date, count backwards from it and book each certification step in reverse. Leave buffer time in case a translation has to be amended or a source document re-issued. Before starting, count the number of certified sets needed before work starts, because extra sets restart the certification steps, then verify the source document is still within any validity window the recipient applies, then check that names are spelled identically to the passport or ID card on every page. The next step is confirming the filing channel and the copy or file format required. Keep a copy of every source document plus the receipt or docket from each step. High-resolution photos of seals and signatures help when the destination asks for re-verification. Powers of attorney and declarations intended for use abroad are usually signed before a Notarial Services Attorney registered with the Lawyers Council of Thailand, then passed to the Department of Consular Affairs and the destination embassy for further legalisation. Thailand deposited its instrument of accession to the Apostille Convention on 30 June 2026, but the Convention is not yet in force for Thailand, so embassy and Department of Consular Affairs legalisation remains the working route. ILC handles the document side only — certified translation, notarial signature certification and legalisation runs at the Department of Consular Affairs or an embassy. ILC is not the deciding authority and cannot guarantee an approval. Cost and lead time depend on page count, language pair and the certification steps the receiving authority requires, so every file is quoted before work starts. Send the checklist you were given, the applicant's nationality and the office you will file with via LINE @NAATI, call +66 80-557-8887 or email ilc@thainotary.co.th.

ปรึกษาฟรี — LINE @NAATI · โทร 080-5578887 · อีเมล ilc@thainotary.co.th