Which documents are needed for CRS and FATCA information exchange?

The scope of this answer is “Which documents are needed for CRS and FATCA information exchange”, so it deals with the case-specific points first and the shared rules afterwards. If any requirement is still unclear, send a sample image to the receiving body before producing the full set. If the receiving body confirmed its requirements by email, keep that message with the file. Keep a copy of every source document plus the receipt or docket from each step. For documents going abroad, include international shipping time in the plan. Leave buffer time in case a translation has to be amended or a source document re-issued. Before starting, check that names are spelled identically to the passport or ID card on every page, then confirm with the receiving body whether it wants an original, a certified copy or a certified translation, then count the number of certified sets needed before work starts, because extra sets restart the certification steps. What sets this case apart is the number of certified sets and the window in which they must be used. The point to fix before starting is the real deadline, so the steps can be scheduled backwards from it. The terms that frame this page are documents · needed · FATCA · information. Automatic exchange of financial account information under the CRS operates in Thailand through the Emergency Decree on Exchange of Information to Comply with International Agreements on Taxation B.E. 2566 (2023), while the United States relationship runs on the Thailand–US Model 1 FATCA agreement. In practice your bank may ask for evidence of tax residence and a taxpayer identification number, and foreign-language evidence usually needs a certified translation. 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. ILC handles the document side: translation, certification of the translation, coordination of legalisation and booking a notarial-services attorney. ILC is not an auditor, not a tax agent and does not give tax advice; liability calculations, planning and return filing belong with a licensed CPA or tax adviser, and any assessment remains at the authority's discretion. 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.

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