A future exit tax is unlikely to apply retrospectively to people whose UK tax residence has already ended. The trigger point in other systems is the change of residence, not where someone lives today.
If you are already a British expat in Thailand, the more realistic risks are ongoing UK tax exposure from UK assets you still hold and future changes to UK rules that apply to non-residents, such as non-resident capital gains tax on UK property or other possible wealth measures.
Category: UK Exit Tax
