Opening a branch or subsidiary abroad — how is a withholding tax certificate used and how far must it be certified?

The case under review is “Opening a branch or subsidiary abroad”, so it flags what usually causes documents like this to be rejected before summarising the general practice. After certification, scan the full set before it leaves your hands. Record the reference number of each certification layer; it is the fastest way to trace status. If the receiving body confirmed its requirements by email, keep that message with the file. 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, verify the source document is still within any validity window the recipient applies, then count the number of certified sets needed before work starts, because extra sets restart the certification steps, then confirm with the receiving body whether it wants an original, a certified copy or a certified translation. What changes the timeline most here is whether the source documents are complete on day one. 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 Opening · branch · subsidiary · abroad. The specifics here are document type: Wht, and those decide which translation and certification level applies. Tax in Thailand is governed by the Revenue Code and administered by the Revenue Department under the Ministry of Finance, which is also the body that issues official tax evidence. Documents you rely on abroad should therefore be issued or certified by the Revenue Department rather than self-prepared, because receiving tax authorities check for the seal or signature of an authorised officer. Thai tax and accounting documents used abroad are normally translated in full — including seals and signatures — then the translation is certified by the Legalisation Division, Department of Consular Affairs, Ministry of Foreign Affairs, and finally legalised at the destination embassy or consulate where that country requires it. Thailand is not a party to the 1961 Apostille Convention, so no apostille is issued on Thai documents. Forms, procedures and lodgement channels change. This page explains the legal framework and the document steps in general terms; before you act, re-confirm the current form, the supporting documents and the deadline with the Revenue Department or the receiving tax authority. Cost and lead time depend on page count, target language, how many certified sets are required and the steps the receiving authority sets, so every file is quoted before work starts. Send scans of every page together with the letter or form the tax authority sent you, 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