How must foreign documents be translated and certified?

The point raised here is “How must foreign documents be translated and certified”, so it separates what is specific to this file from the standard certification chain. Before starting, make sure document numbers, issue dates and issuing-office names match across the set, then keep a digital copy of every page, including seals and signatures, then plan the timeline so certification finishes before the real filing deadline. With a fixed filing date, count backwards from it and book each certification step in reverse. When several certification layers are required, start with the slowest one. The terms that frame this page are foreign · documents · translated · certified. The condition most often overlooked is that name spelling must match across every document in the set. Check first whether the issuing office of the source document is one the destination recognises. Keep a copy of every source document plus the receipt or docket from each step. Attach a document index to the bundle so nothing is lost during review. Once the set is complete, check it line by line against the destination's own checklist before filing. Foreign documents used in a work permit or incorporation file — degrees, experience letters, the parent company's certificate of incorporation, powers of attorney and passports — must be translated into Thai or English as the office requires and certified along the correct chain: certification in the country of origin, then embassy or Department of Consular Affairs legalisation as applicable. 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. 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 @Thainotary, call +66 094-895-8999 or email contact@thainotary.co.th.

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