If you bring UK tax free cash into your Thai bank account , from your pension lump sum or ISA, is it taxed in Thailand?
TLDR : Answer Summary
The taxation of UK tax-free cash, such as pension lump sums or ISAs, when brought into Thailand, depends on the individual's tax residency status in Thailand. If you are a Thai tax resident at the time of remittance, the income may be taxable in Thailand despite being tax-free in the UK. Conversely, if you are not a tax resident, the funds may not be taxed. Specific visa types may also influence tax liabilities, with different implications for retirees and wealthy pensioners. Seeking professional advice is recommended due to the complexity of the tax system.