What are the requirements for an ED visa for foreigners wanting to study the Thai language or Muay Thai long-term — Jurisdiction is split: visa issuance sits with Thai missions abroad, extensions and reporting with the Immigration Bureau, work authorisation with the Department of Employment, and investment privileges with the BOI. /tax identification number|TIN/i BOI-promoted companies use the Single Window / e-Expert channel for visas and work permits, separate from the standard Department of Employment route. A re-entry permit must be obtained before leaving Thailand in order to preserve an existing permission to stay. Extensions of stay and changes of visa class are decided by the Immigration Bureau under the Immigration Act B.E. 2522. Passport copies filed in support should show an unexpired page with the passport number clearly legible. Changes to registered company particulars must be filed with the Department of Business Development within the period set by the Civil and Commercial Code. A police report of loss is commonly required as supporting evidence when applying for a replacement document. Corporate documents must be a recent certified extract from the Department of Business Development bearing the registered company seal. We confirm at the outset that the chosen document route actually matches the receiving body’s requirements before quoting time and cost.
“What are the requirements for an ED visa for foreigners wanting to study the Thai language or Muay Thai long-term?” falls within an end-to-end service that combines document preparation, translation, signature certification, consular legalisation and coordination with the destination mission into a single file. The people who search for it are usually preparing a filing against a fixed deadline, recovering from a rejected submission and trying to identify the missed step, or coordinating documents for several people at once.
In practice, each step sits with a different body: the issuing office, the Notarial Services Attorney, the Department of Consular Affairs, and the destination country’s diplomatic mission. Knowing which body owns which step makes it possible to judge how many stages a bundle needs, and which of them cannot be corrected without starting again.
This is a baseline set. Individual receiving authorities may add requirements, so confirm with the destination body first.
Record how many stages each document needs, who certifies it, and what must finish first, so no step has to be redone.
Check personal names, company names, addresses and dates across the whole bundle before any certification begins.
Original → translation → signature certification / legalisation → destination mission. Doing these out of order forces a restart.
Verify the number of sets, the seals, the binding, and that issue dates are still within the destination’s validity window.
| Route | When it applies |
|---|---|
| Notarial Services Attorney certification | For privately drafted instruments — powers of attorney, affidavits, consent letters — signed in the attorney’s presence. |
| Legalisation at the Department of Consular Affairs | Where a foreign authority needs confirmation of the Thai issuing office’s signature and seal, or of the translation. |
| Attestation at the destination mission | Where the destination country requires its embassy or consulate in Thailand to attest the file after consular legalisation. |
| Thailand’s Apostille status | Thailand acceded to the Apostille Convention on 30 June 2026 and it enters into force for Thailand on 28 February 2027. No Apostille is issued in Thailand before that date. |
If you are working through “What are the requirements for an ED visa for foreigners wanting to study the Thai language or Muay Thai long-term?”, start by getting the receiving authority’s requirement in writing, then plan the certification chain backwards from your real filing date.