Thailand has more than 60 double-tax agreements, and they disagree with each other about pensions. The same ฿100,000 monthly remittance can be fully exempt for an American, fully assessable for a Briton, and somewhere in between for a German. Always check the treaty before deciding which income to remit.
Quick reference (general positions — your facts can change the answer)
| Source | General treaty position for a Thai-resident retiree |
|---|---|
| US Social Security | Taxable only in the US (Art. 20, US–Thai DTA). Thailand cannot tax it. |
| US private pensions, IRA/401(k) | Generally taxable in the residence state (Thailand) when remitted; US tax paid may be creditable. Roth treatment needs case-by-case analysis. |
| UK state & private pensions | No pension article in the 1981 UK treaty → generally assessable in Thailand when remitted. |
| UK government-service pensions | Taxable only in the UK. |
| Australian pensions & super | Generally taxable in the residence state (Thailand) when remitted; government-service pensions stay Australian-taxed. Lump-sum timing is a major planning lever. |
| German, Dutch, Nordic pensions | Varies — several treaties keep source-state taxing rights on social-security-type pensions. Genuinely case by case. |
| Canadian pensions (CPP/OAS/RRIF) | Canada generally withholds at source; Thai treatment on remittance with credit for Canadian tax. |
Two traps we fix most often: (1) UK retirees assuming "my pension is taxed in the UK so Thailand can't touch it" — usually wrong; (2) Americans remitting IRA distributions believing the Social Security rule covers them — it doesn't. Both are solvable with sequencing: remit protected or pre-2024 funds first.
How relief actually works
- Exemption: if the treaty gives your home country exclusive taxing rights (US Social Security, government-service pensions), the income is simply not assessable in Thailand — but keep evidence of what the remittance was.
- Credit: otherwise, foreign tax properly paid on the same income is typically creditable against Thai tax under the treaty — paperwork-heavy but effective. Certificates of tax paid from your home authority are the key document.
- Structural: the LTR visa exempts remitted foreign income entirely — treaty analysis becomes moot.
The interaction between treaty relief, the remittance timing rules and Thai allowances is where written advice pays for itself: the order in which you remit different income types can change the bill by hundreds of thousands of baht over a retirement.
Get a written treaty analysis for your pensions
Tell us your nationality and income sources. We map each one against the treaty and give you a remitting order. Fixed fee ฿15,000–40,000.
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