Estate · 22 January 2026 · 7 min · Updated 30 September 2026
Do you need a Thai will?
For most British expats with Thai property, the answer is yes, and the cost of not having one falls squarely on the spouse you would have left it to.
General information, not personal financial advice.
What happens without a Thai will?
Without a Thai will, an expat’s Thai-situated assets, typically the condo, the bank account, the Thai-domiciled investments, pass under Thai intestacy rules. Thai intestacy is not hostile to foreign spouses, but it is procedurally slow and frequently requires translation, notarisation, and court applications that can take 12 to 18 months.
How a two-will set should be drafted
A Thai will and a UK will should be drafted by lawyers in their respective jurisdictions, with each will explicitly scoped to that jurisdiction’s assets and explicitly disclaiming the other. The most common drafting error is a single global will that purports to cover both UK and Thai assets, Thai courts treat such wills inconsistently and the family ends up in administrative limbo.
What it does not do
A Thai will does not solve the UK inheritance-tax exposure on your global estate. Since 6 April 2025 UK IHT has turned on long-term UK residence rather than domicile. A British expat who was UK resident for at least 10 of the 20 tax years before death is within scope on the worldwide estate, and UK-situated assets stay within scope however long you have lived in Thailand. The Thai will is necessary but not sufficient.
Sources
Senior Consultant · Business Class Asia
Richard Knight, ACSI
Associate Member of the Chartered Institute for Securities & Investment, and Vice Chair of the British Chamber of Commerce Thailand in Hua Hin. 15 years in private wealth, advising expatriates across Thailand.
About Richard →
