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Withholding Tax — Double Tax Agreement Override of Domestic Section 70 Rates
Thai Payer (Plaintiff) / Foreign Recipient v Revenue Department (Defendant)
Composite summary — not a single reported case. This entry distils a settled line of Thai Supreme Court (Dika / ฎีกา) authority for legal education. It is not a transcript of one reported judgment, and the heading is not a citable case number. Do not cite it as specific case law — consult a Thai-qualified lawyer for the authoritative Dika number and current application.
Facts
A Thai-resident company paid royalties, interest, dividends, technical-service fees, or management fees to a foreign recipient resident in a country with which Thailand has a Double Tax Agreement (DTA). Section 70 of the Revenue Code requires Thai withholding tax at domestic rates (commonly 15% on royalties and interest, 10% on dividends) on Thai-sourced payments to non-residents not carrying on business in Thailand. The taxpayer claimed the lower DTA rate (commonly 5%–10% depending on the DTA and the income category, and 0% on certain inter-corporate interest). The Revenue Department disputed (i) the foreign recipient's residence and beneficial-ownership status; (ii) the correct characterisation of the income (royalty vs technical service vs business profits); and (iii) the procedural conditions for relief, including the timing and form of tax-residence certificates.
Legal Issue
When and how a DTA overrides the domestic Section 70 withholding regime, what evidence the taxpayer must produce, and how the Revenue Department's anti-treaty-abuse positions apply.
Holding
The Supreme Court — Tax Division has consistently held: (i) DTAs are part of Thai law by virtue of the Royal Decree implementing each agreement and override Section 70 to the extent of any conflict — the lower DTA rate prevails; (ii) the taxpayer (whether Thai payer making the deduction or foreign recipient claiming relief) bears the practical burden of proving the foreign recipient's treaty-residence and beneficial-ownership status, ordinarily by a current tax-residence certificate from the foreign tax authority; (iii) the characterisation question is decided by reference to the DTA's own definitions (read against the OECD/UN Model Commentaries) rather than purely domestic law — technical-service fees, in particular, are often a contested middle ground; (iv) where the foreign recipient is a mere conduit or lacks beneficial ownership, treaty benefit can be denied; (v) procedural defaults (late certificates, missing forms) can be cured on appeal where the substance of entitlement is clear.
Reasoning
DTAs are bilateral international obligations implemented domestically by Royal Decree. The principle pacta sunt servanda and the Vienna Convention on the Law of Treaties inform interpretation. Beneficial-ownership and anti-conduit doctrines reflect the international consensus against treaty shopping and are reinforced by post-BEPS multilateral developments.
Significance
Affects every cross-border interest, royalty, dividend, and technical-service payment from Thailand. Routine audit topic; failure to apply correctly leads to under-withholding assessments against the Thai payer and over-payment refund claims by the foreign recipient — both expensive and slow to unwind.
Practical Takeaway
Before applying a DTA rate, obtain a current tax-residence certificate (issued in the calendar year of payment) from the foreign authority. Document beneficial ownership and the income's characterisation under the DTA. Where a treaty-rate has already been applied without certificate support, prepare evidence to defend the position on audit and consider a voluntary refund claim where over-paid.
Cited Statutes
- Revenue Code, Sections 70, 76 bis
- Royal Decrees implementing each DTA (treaty-specific)
- OECD/UN Model Tax Conventions and Commentaries (used as interpretative aids)
This entry summarises a representative line of authority from the Thai Supreme Court (ฎีกา). It is intended for general legal education only and is not a substitute for advice from a Thai-qualified lawyer. Individual Dika case numbers are being verified against primary sources; until then these entries are presented as composite doctrinal summaries.
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