Work authorisation linked to a SMART Visa — what should you know about Foreign Business Act restrictions?

The case under review is “Work authorisation linked to a SMART Visa”, so it separates what is specific to this file from the standard certification chain. Plan the schedule with room for at least one review cycle at the receiving office. Public holidays and embassy closures move certification queues more than most people expect. 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. A key variable is the filing channel (in person, agent or online), which sets the copy format to prepare. The common failure in this group of cases is a translation that does not match the certification type required. The terms that frame this page are Work · authorisation · linked · SMART. If any requirement is still unclear, send a sample image to the receiving body before producing the full set. High-resolution photos of seals and signatures help when the destination asks for re-verification. If the receiving body confirmed its requirements by email, keep that message with the file. Business activity by foreigners is restricted by the Foreign Business Act B.E. 2542 (1999), which sorts activities into Lists 1, 2 and 3; a Foreign Business Licence or Foreign Business Certificate from the DBD is required where the Act applies, while US nationals may instead certify under the Treaty of Amity. Companies are registered with the Department of Business Development (DBD), Ministry of Commerce: a private limited company is formed under the Civil and Commercial Code and a public limited company under the Public Limited Companies Act B.E. 2535 (1992), with a memorandum of association, articles and a shareholder list among the incorporation papers. 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