Thailand's 2024 remittance rule: what changed and what it means for your pension
Thailand amended its foreign income remittance rules in 2024, removing an exemption that many expats had relied on for years. Combined with the UK-Thailand DTA's pension treatment and the LTR visa exemption, the current position is more complex than most expats in Thailand appreciate. This page maps it out.
Get Treaty-Specific AdviceThe UK-Thailand DTA: scope and residency rules
The double taxation agreement between the United Kingdom and Thailand was signed 18 February 1981 and entered into force on 20 November 1981. No bilateral protocol has amended it since. The only subsequent modification is the OECD Multilateral Instrument (MLI), which Thailand signed on 9 February 2022, effective from 1 January 2023 for withholding taxes and 6 April 2023 for UK income tax and capital gains tax. It is an older treaty by OECD standards, and it covers income from employment, business profits, dividends, interest, royalties, and capital gains. It contains no dedicated pensions article and no general "other income" article.
Thailand taxes individuals on income from sources in Thailand, and on foreign-sourced income remitted to Thailand in the year it is received. The 2024 rule change modified this: from 1 January 2024, the prior-year deferral approach (under which income earned in year one but remitted in year two was exempt from Thai personal income tax) was abolished. Foreign income is now taxable on remittance to Thailand regardless of when it was earned, subject to treaty protections and specific exemptions for certain visa categories.
Thailand personal income tax applies to resident individuals at progressive rates from 5% to 35%. Tax residency is determined by physical presence of 180 days or more in Thailand in a tax year. Non-residents pay Thai tax only on Thai-sourced income.
For British expats who have been long-term residents of Thailand and were relying on the prior-year deferral approach to manage remittances tax-efficiently, the 2024 change is material. Income that was legitimate to remit tax-free under the old rules may now be taxable on remittance under the new framework, unless the DTA provides protection or a specific visa exemption applies.
UK pension income under the treaty and the 2024 rules
The UK-Thailand DTA has no pensions article and no general "other income" article. Government-service pensions (civil service, NHS, teachers, police, military, local government) are the exception: Article 19(2)(a) taxes these only in the UK, the paying state, and exempts them in Thailand. That position only shifts under Article 19(2)(b) where the recipient is both a national of and resident in Thailand, which does not apply to a UK national living there.
UK State Pension, private-sector defined-benefit pensions, and SIPP drawdown (including PCLS) have no distributive article at all. No provision in the treaty allocates taxing rights over them, so both the UK and Thailand may tax that income under their own domestic law. Under the post-2024 framework, private pension income from the UK remitted to Thailand by a Thai tax resident is treated as foreign income and is subject to Thai personal income tax on remittance, under Revenue Departmental Instructions Por. 161/2566 and Por. 162/2566 (income earned before 1 January 2024 is exempt under Por. 162).
Whether Article 23 (Elimination of Double Taxation) provides credit relief against the Thai liability for any UK tax paid on this income is genuinely unsettled. Article 23 relieves income "taxed in accordance with the Convention," and there is a reasonable argument that income no article covers falls outside the Convention altogether. There is no published Thai Revenue Department ruling on this point either way.
Thai personal income tax rates on pension income above THB 5 million per year reach 35%. For most expats drawing SIPP income in the range equivalent to GBP 50,000 to GBP 150,000 per year, the effective Thai rate would typically be in the 15% to 25% range depending on total chargeable income. This compares unfavourably with the Singapore position and, for some income structures, with the Malaysia position under the FSI exemption.
| Chargeable Income (THB) | Thai Personal Income Tax Rate |
|---|---|
| 0 to 150,000 | Exempt |
| 150,001 to 300,000 | 5% |
| 300,001 to 500,000 | 10% |
| 500,001 to 750,000 | 15% |
| 750,001 to 1,000,000 | 20% |
| 1,000,001 to 2,000,000 | 25% |
| 2,000,001 to 5,000,000 | 30% |
| Above 5,000,000 | 35% |
The Long-Term Resident visa and its tax treatment
Thailand's Long-Term Resident (LTR) visa was introduced in 2022. It targets four categories: wealthy global citizens, wealthy pensioners, work-from-Thailand professionals, and highly skilled professionals. The Wealthy Pensioner category requires documented passive income of at least USD 80,000 per year (or USD 40,000 with a health insurance policy and a Thai property purchase).
LTR visa holders receive specific income tax benefits from the Thai Revenue Department, but the benefit differs by category. Under Royal Decree No. 743 B.E. 2565 (2022), section 5, Wealthy Pensioner, Wealthy Global Citizen, and Work-from-Thailand Professional holders receive a full exemption from Thai personal income tax on qualifying foreign-sourced income remitted to Thailand. The 17% flat rate under the same Royal Decree applies only to the separate Highly-Skilled Professional category, and only to Thai-source employment income, not to foreign-sourced pension income.
The exemption for Wealthy Pensioner and the other qualifying categories is not automatic. It is claimed through an annual Thai personal income tax filing, with the procedural requirements set out in Notification of the Director-General of the Revenue Department No. 427 (1 September 2022). The precise scope of this exemption, particularly its interaction with the 2024 remittance rule change, is worth confirming with a Thai tax adviser before relying on it, as market commentary on the point has not always been consistent.
For LTR Wealthy Pensioner visa holders receiving UK SIPP income above USD 80,000 per year, the practical effect is that qualifying remittances are exempt from Thai personal income tax entirely, rather than taxed at the standard progressive rates of up to 35%. Whether the 2024 remittance changes affect the scope of this exemption is a question that requires professional assessment based on the specific income structure and any subsequent Revenue Department guidance.
The LTR visa tax position and its interaction with the 2024 remittance rule change has been subject to ongoing interpretation in Thailand. This page reflects the position as understood at the time of writing. Verify current guidance with a qualified Thai tax adviser before making remittance decisions.
Dividend, interest, and royalty rates under the UK-Thailand treaty
| Income Type | Domestic Rate | Treaty Rate | Notes |
|---|---|---|---|
| Dividends (UK source to Thai resident) | 0% (UK no WHT) | N/A | UK pays no dividend WHT |
| Interest (UK source to Thai resident) | 20% | 25% (treaty ceiling) | Domestic rate applies in this case |
| Royalties (UK source to Thai resident) | 20% | 15% (treaty) | Treaty reduces domestic rate |
| Private pension (SIPP) | 20% basic rate if no NT code | No distributive article | Both states may tax; Article 23 relief uncertain |
| Interest (Thai source to UK resident) | 15% Thai WHT | 25% (treaty ceiling, domestic lower) | Domestic 15% applies |
The UK-Thailand treaty interest rate provision is less favourable than most of the UK's modern treaties, as the ceiling rate of 25% in the treaty is above the Thai domestic withholding rate of 15%. In practice, the domestic rate applies since it is lower. British expats in Thailand receiving UK interest income should apply the UK NT (No Tax) coding for amounts exempt under the treaty, and declare the interest in Thailand subject to the standard progressive rate schedule or the LTR flat rate if applicable.
For comprehensive cross-country comparisons, see the UK-Malaysia DTA and UK-Singapore DTA pages.
The 2024 rules changed the planning picture in Thailand
If you are based in Thailand and have not reviewed your remittance and pension income position since the 2024 rule change, the analysis is overdue. A 30-minute session maps your current exposure and identifies what needs to be addressed.
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Key provisions of the UK-Thailand DTA in a format you can actually use.