BANGKOK, THAILAND – New guidance has clarified how Thailand taxes pensions from Austria and Switzerland, revealing key differences in the double taxation agreements with both countries.
Different tax treaties, different answers for retirees
Readers had repeatedly complained that coverage focused mainly on German citizens, while Austrians and Swiss in Thailand faced similar questions but often different tax outcomes. The information now made available showed that the double taxation agreements (DBA) Thailand concluded with Vienna and Bern worked differently from the one with Berlin. As a result, retirees from Austria and Switzerland needed to examine their specific treaty instead of relying on general internet rules.
The guide explained how Austrian pensions and Swiss retirement benefits were treated for tax purposes in Thailand and where the main pitfalls lay. It emphasised that checking the exact DBA provisions before relocating was more valuable than any informal rule of thumb.
The 180-day rule for Thai tax residency
Under Thai law, anyone who stayed more than 180 days in a calendar year in Thailand was considered tax resident there. From that point, foreign-source income brought into the country had to be declared in Thailand. This had officially applied since 2024, but in principle had already been valid law before, though rarely enforced strictly.
Those who stayed just below the 180‑day threshold, spending around four to five months in Thailand and the rest of the year elsewhere, were not treated as Thai taxpayers. This was legal but required careful documentation, including entry stamps, boarding passes and a simple log of days in the country. People who deliberately managed their days were advised to keep records properly from the very beginning.
Austrian pensions: clear rules with one key exception
The DBA between Austria and Thailand, in force since 2018, contained a clear rule for private pensions. All types of Austrian pensions – statutory schemes, company pensions and private retirement plans – were taxable only in the country of residence. Anyone who had moved their residence to Thailand paid tax there, and Austria no longer levied income tax on these pensions.
There was one important exception for civil service pensions and retirement pay from the Austrian public sector. Under Article 19 of the DBA, these remained taxable in Austria regardless of where the recipient lived. Former employees of the federal government, a province or a municipality with a civil service pension had to continue declaring that income in Austria, while Thailand did not tax it.
Swiss three-pillar system: three funds, three tax treatments
For Swiss retirees, the situation was more complex because their pension system was based on three pillars, and the DBA between Switzerland and Thailand did not treat all three in the same way. Occupational pensions from the second pillar (Pensionskasse) were clearly regulated: ongoing payments from this professional scheme were taxed only in the state of residence. Retirees living in Thailand therefore paid tax there, and Switzerland did not tax the periodic pension.
The situation was different for the state old-age pension (AHV) and the third-pillar (Säule 3a) products. According to the Swiss embassy in Bangkok, both were outside the scope of the DBA. AHV pensions were exempt from withholding tax in Switzerland for residents abroad, but Thailand could tax them once the money was transferred into the country. AHV benefits left on a Swiss bank account and not remitted to Thailand were not taxed there, but amounts brought into Thailand had to be declared.
Third pillar payouts: final Swiss tax and risk of double taxation
The guide highlighted the special case of third-pillar (Säule 3a) assets for Swiss citizens who left the country. Anyone who withdrew their Säule 3a balance upon departure had to pay Swiss withholding tax, with rates varying by canton. The crucial difference compared with the second pillar was that withholding tax on capital payments from the occupational pension (2nd pillar) could be reclaimed if the person was resident in Thailand, because the DBA allocated the taxing right on that capital to the country of residence.
For Säule 3a, this refund option did not exist because it fell entirely outside the DBA, meaning the Swiss withholding tax was final. People planning to take their second-pillar savings as a lump sum and then move to Thailand were advised to time the withdrawal carefully. A payout after the official change of residence could allow a refund of Swiss withholding tax on the pension fund capital, whereas no such relief was available for Säule 3a, creating a real risk of being taxed both in Switzerland and in Thailand.
Thai tax burden: high allowances, comparatively low bills
The information also detailed how much income tax was actually due in Thailand on pensions. The country applied generous allowances, including an age-related allowance of 190,000 baht for people over 65. On top of that came a basic personal allowance of 60,000 baht and a flat 100,000 baht deduction for work-related expenses, with an additional 60,000 baht if the spouse had no own income.
In total, up to 410,000 baht could therefore be earned tax-free, equivalent to roughly 10,500 to 11,000 euros at current exchange rates. As an example, a retiree transferring a monthly pension of 2,000 euros (about 76,000 baht) to Thailand would reach an annual income of around 912,000 baht. After all allowances for a married pensioner over 65, around 500,000 baht remained taxable, resulting in roughly 22,500 baht, or about 590 euros, in annual Thai income tax under the progressive tariff, significantly less than most retirees would pay on the same income in Austria or Switzerland.
Pre‑2024 savings: tax-free transfers with proper evidence
The rules distinguished clearly between ongoing income and existing savings on foreign accounts. Money held in Austrian or Swiss bank accounts that had been accumulated before 1 January 2024 could be transferred to Thailand tax-free at any later date. In practice, a December 2023 bank statement showing the balance at that time was considered sufficient proof.
Difficulties could arise if older savings and new income were mixed in the same account, because the taxpayer then had to prove which part was tax-free capital and which part was taxable income. Keeping pre‑2024 savings in a separate account and managing current pension payments through another account created the clearest documentation and helped avoid disputes with local tax advisers or the revenue authorities.
Preparation before moving: clarify pension types and seek advice
The guidance stressed that the first step for anyone planning a move was to clarify which types of pension they received and which DBA articles applied. For Austrians, this was usually straightforward, as almost all pensions except civil service benefits shifted to Thai taxation after relocation. For Swiss citizens, AHV and Säule 3a posed more complex issues that required individual analysis, ideally before changing residence.
Professional tax and visa advice in German within Thailand could help retirees understand their specific situation and organise their documents correctly. Well-prepared movers often ended up paying significantly less tax than in their home countries while gaining legal certainty if authorities later scrutinised their affairs. The trend of linking tax enforcement more closely with immigration rules was already visible in Thailand, and those with proper documentation could approach this development with greater confidence.
Editorial note and legal caveats
The article underlined that the information provided was intended as factual orientation on tax questions for retirees from Austria and Switzerland in Thailand. It did not replace individual tax advice, as DBA provisions were complex and had to be examined case by case, especially where different income types were involved. For binding assessments, readers were advised to consult certified tax advisers in Austria or Switzerland as well as specialists in Thailand.
All currency figures, with 1 euro or Swiss franc approximated at 37–38 baht, were presented as indicative values subject to exchange rate fluctuations. The overall message was that thorough planning and documentation could significantly reduce tax burdens while ensuring compliance with both Thai and European regulations.