28 October 202614 min read

Overseas Property Inheritance Planning: Thailand From the UK

How to plan the inheritance of Thai property from the UK: who can inherit, wills, UK Inheritance Tax, double tax relief and the title checks to do first.

Owner reviewing Thai property inheritance documents

Inheriting or leaving overseas property is rarely governed by one set of rules.

For a UK resident holding a home or investment in Thailand, at least two legal systems and two tax authorities have a say: Thai property and succession rules decide what the heir can actually hold and how it is registered, while UK Inheritance Tax (IHT) may still reach the asset.

The sound approach is to plan before you buy, by choosing a structure your heirs can legally keep, aligning your wills, and confirming the title is clean enough to pass on at all.

This guide is written for UK buyers, retirees, investors and family offices who hold, or are about to hold, Thai property. It sets out what to check, in what order, and where specialist advice is not optional.

TL;DR

What your heirs can keep depends on the form of ownership: a condominium, land, a house, a lease or a usufruct (a registered right to use and take income from property) each behave differently on death.
Thai law allows foreigners to receive land by inheritance only in specified cases, as statutory heirs, and within Land Code limits. Do not assume your heir can simply keep what you bought.
UK IHT can apply to Thai property if you are a long-term UK resident, and Thai transfer charges may also arise. Credit for tax paid in one country against the other may be available, but only if both positions are coordinated.
Wills for each country should work together rather than contradict each other. Have the Thai side reviewed by a Thai lawyer and the UK side by a UK adviser.
A defective title cannot be fixed by a will. Verify the ownership chain before paying, not when your executors discover a problem.

Why inheritance planning starts at purchase?

Most buyers think about succession after the purchase, once the asset has a value worth protecting. In practice the key decisions are made at the moment of purchase: who is named on the title, whether the interest is freehold, leasehold or a usufruct, and whether the developer's paperwork would stand up if an heir had to prove the chain of ownership years later.

Our reviews support this. NITARYA has reviewed over 380 property decisions, and in one in three of them we found a significant issue that changed the deal.

Many of those issues, such as unclear ownership rights or missing registrations, are exactly the ones that become expensive on death, when the person who understood the transaction is no longer available to explain it.

A useful framing for a decision file is three questions:

What exactly do I own, and in what legal form?
Who can lawfully receive it, and what must they do within what time?
What tax and cost falls on the transfer, in Thailand and in the UK?

What a foreigner can own, and what that means for heirs

The form of ownership sets the ceiling on what can be inherited. The Thai government's official guide states that foreigners may receive land transfers in specified cases, including as statutory heirs, subject to the limits of the Land Code (Thailand government guide on land ownership by foreigners).

That is a narrow permission, not a general right to hold land, and it is the reason a foreigner's land purchase through a nominee or a company structure that looks like a workaround tends to create the most serious succession problems.

In broad terms:

Form of ownership	Typical buyer	Succession points to confirm
Condominium unit in the foreign quota	Individual foreign buyer	Whether the heir is eligible to hold a foreign-quota unit, and whether the building still has quota space
Land or house on land	Usually Thai nationals or special structures	Whether a foreign heir qualifies under the Land Code, and what conditions attach
Long lease	Villa buyers	Remaining term, renewal wording, and whether the lease passes to heirs
Usufruct	Retirees, villa buyers	Registration, duration and what happens on death

Condominiums are governed by their own statute, separate from the Land Code, and the foreign-ownership cap of 49% of the total unit area in a building is the first thing to check at purchase; our guide to foreign condo ownership and the 49% quota explains how.

The point for succession is that a foreign heir of a foreign-quota unit may face restrictions on holding it, so ask a Thai lawyer for the current position before you rely on a condominium as an asset to pass to a non-Thai family member.

For villas, our comparison of freehold and lease structures in Thailand covers the 30-year lease checks. A lease that appears to run for 30 years but has no enforceable renewal gives heirs a depreciating asset, which matters for valuation as well as for use.

Usufruct and what it does on death

A usufruct is sometimes used to give a buyer a right to occupy and enjoy a property for life. Because it is tied to a person and to registration, an unregistered or loosely worded usufruct is a weak foundation for any succession plan. We cover the checks in our guide to usufruct due diligence in Thailand. If your plan depends on a usufruct, confirm in writing what happens when the holder dies and who then has a right to the property.

What happens when a foreign heir inherits Thai property

When property passes by inheritance, the transfer is registered at the Land Department. Official Thai guidance gives the inheritance transfer fee for land as 2% of the property's appraised value, reduced to 0.5% for transfers between parents and descendants or between spouses (Thai government guide to fees and taxes).

The reduced rate is relevant for families planning a transfer from a parent to a child, and it is another reason to document family relationships clearly.

Two practical points follow.

The appraised value is not the price you paid. The fee is calculated on the official appraisal, which can differ from the purchase price or current market value.
Registration is a process, not an event. An heir normally needs the death certificate, proof of relationship, the title documents and, where the estate is administered through a court or an executor, the authority to act. Gathering these from abroad is slow without preparation.

Speed matters because delays attract costs and, for foreign heirs who may be required to dispose of an interest, time limits. Do not rely on a general summary for those limits. Ask your Thai lawyer for the current requirement that applies to the exact type of property and the exact nationality and status of each heir.

If your family will deal with Thai offices from the UK, arrange authority in advance. Our article on power of attorney in Thailand explains how a correctly prepared document avoids weeks of delay.

Wills: one document or two?

A UK will does not automatically dispose of Thai property in the way you expect. The country where the property sits normally decides how title passes, so a UK will that is silent on, or inconsistent with, a Thai will can produce delays or disputes.

Practitioners generally recommend coordinating cross-border wills so they do not contradict each other and so that probate is not held up (UK estate planners' guidance on separate wills for UK and overseas property). The same guidance notes that foreign countries may apply different rules to jointly held or trust-held property, which can complicate how an estate passes.

A workable approach usually has these features:

Territory-limited wills. One will covers UK assets, another covers the Thai property, each drafted to avoid revoking the other. This is a point to settle with advisers in both countries, because careless wording can revoke the earlier will.
A Thai-language will prepared by a Thai lawyer, so that Thai offices accept it, with the executor named and able to act.
Consistency on beneficiaries. If the UK will leaves everything to a trust and the Thai will leaves the unit to a child, decide deliberately which prevails and why.
Regular review after a move, marriage, divorce, birth or change in the property's ownership form.

Joint ownership deserves particular care. UK couples often assume that survivorship applies automatically. Thai rules on co-ownership of a unit or registered interest may not work the same way, so confirm the effect on the surviving spouse before you decide how to hold title.

UK Inheritance Tax and Thai property

The UK tax position changed from 6 April 2025, when IHT moved towards a residence-based test for assets outside the UK. Overseas assets can now fall within UK IHT for long-term UK residents (UK estate planners' guidance).

Official guidance describes someone as based abroad for IHT if they have lived in the UK for less than 10 years in the last 20 (GOV.UK on Inheritance Tax when someone living outside the UK dies).

A UK-resident owner who has lived here longer than that should assume the Thai property is part of the estate for UK purposes, and confirm the position with a UK tax adviser.

Two further points matter for executors.

Reporting and relief

If the deceased had a permanent home in the UK when they died but held assets outside the UK, HM Revenue and Customs (HMRC) expects the foreign assets form, IHT417, to be filed with the main Inheritance Tax account, form IHT400 (GOV.UK guidance on IHT417).

Where foreign tax has been paid on the same asset, unilateral relief may be available under UK law to credit it against the UK liability when no double taxation treaty applies (GOV.UK on Inheritance Tax double taxation relief). Because relief depends on what each country actually charged, keep the Thai receipts and assessments with the estate papers.

The 1981 UK-Thailand Double Taxation Convention, as modified by the Multilateral Instrument (an international agreement that updates tax treaties), allows income and capital gains from immovable property to be taxed in the country where the property is situated (HMRC synthesised text of the convention). That treaty is about income and gains, so do not treat it as settling the inheritance question. Ask your adviser how it interacts with relief for the death itself.

Valuation

The estate needs a value for the Thai property. HMRC and the Thai authorities do not necessarily use the same basis. Thai ministerial rules on inheritance valuation, published through the Revenue Department, use the local registration appraisal value for real estate where available, then a valuation by an approved person or organisation, and otherwise market value on the date of inheritance (Thai Ministry of Finance regulation).

For the UK return, the usual approach is a market value at the date of death, supported by an independent valuation. If you want to see how an inherited home can be priced before a sale, valuing an inherited property shows the logic of fixing a defensible figure, though the Thai appraisal and the UK market value should be kept as separate numbers in your file.

Thai and UK inheritance valuation methods compared

Where the location of an asset is itself unclear, HMRC's internal manual directs staff to specialist technical support (HMRC Inheritance Tax Manual, foreign property). It is a reminder that holding structure matters: the more layers between you and the title, the more questions an inspector can ask.

Rental income and capital gains in the meantime

Before death, the property may produce taxable rent. UK residents must report overseas rental income, and our guides on Thai property taxes and UK reporting and UK tax on foreign rental income cover that. Unreported income is an avoidable complication for executors, who will have to regularise it. If the unit is let on a short-term basis, check Airbnb rules in Thailand so that the income your heirs inherit is lawful.

Title disputes: the risk you cannot will away

Inheritance planning assumes the owner has good title. If the chain of ownership is flawed, heirs inherit the flaw. A Thai land-title dispute may involve overlapping claims, an incorrect boundary, a transfer made without the authority of every co-owner, or a document type that gives weaker rights than the buyer believed. Before paying, a buyer should ask for and verify the following:

The title deed itself, and its type, from the Land Department, to confirm the document gives full ownership rights and not a lesser claim. Thai land documents come in several grades with different legal strength.
The registered owner and the chain of transfers, compared against the seller's identity and authority to sell.
Encumbrances, such as mortgages, leases, usufructs or restrictions registered against the property.
Access and boundaries, matched against a survey, because a plot without lawful access is hard to sell or divide among heirs.
For a condominium, the building's registration, the common-property position and the foreign quota certification for the whole building.
The developer's permits and track record, because an unfinished or non-compliant project leaves heirs with an asset they cannot transfer cleanly.

The same discipline applies in other markets that UK families buy into. In India, for example, a buyer should trace the title chain back through each previous transfer, and our India property due diligence service is built around that. Whatever the country, a chain with a missing link is a problem that grows with each generation.

Our perspective

We review property for the buyer, not for the developer or the agent, and what we see in succession cases is consistent. Families rarely lose Thai property because the law was unfavourable. They lose time and value because nobody could show what the owner held, in which form, and under whose authority.

Three habits make the difference. First, treat the form of ownership as a succession decision at the point of purchase, not as a technicality for the lawyer to tidy up.

Second, assemble a decision file while the buyer is alive: title documents, registrations, permits, the developer's evidence, tax filings and the wills, kept together and understood by at least one trusted person.

Third, test the assumptions that look safest, such as "my children can simply keep it" or "the UK will covers everything", before relying on them.

Our figure that one in three reviews finds a deal-changing issue is a reminder that confident assumptions are often the ones that fail.

— Neerraj

A practical sequence for UK owners

For a buyer yet to complete:

Decide who is meant to inherit and how they are related to you.
Choose the ownership form with that answer in mind, and ask a Thai lawyer whether those heirs can lawfully hold it.
Verify the title, the developer and the permits before paying a deposit.
Instruct a Thai lawyer to prepare a Thai will and a UK adviser to align the UK will.
Ask a UK tax adviser whether you are a long-term UK resident for IHT purposes and how relief would work.
Put the file in one place and tell the executors where it is.

For an existing owner, start at step 2 and add a review of the actual title documents, because some owners discover only then that the registered form differs from what they believed they bought.

Independent review before you commit

If you are choosing, buying or restructuring a Thai property with succession in mind, our team can review the specific property and produce an evidence-based decision file covering ownership rights, the developer, permits, ongoing obligations and legal constraints, coordinated with legal, technical and market specialists. You can see how this works on our Thailand property due diligence page, or start from our before, during and after purchase reviews.

FAQ

Can my children inherit my Thai condominium if they are not Thai nationals?

Not automatically. Official Thai guidance allows foreigners to receive land in specified cases, including as statutory heirs, within the Land Code's limits, and condominiums follow their own statute with foreign-ownership rules. Ask a Thai lawyer to confirm, before you buy, whether each intended heir can hold the unit and what they must do after your death.

Do I pay UK Inheritance Tax on a property in Thailand?

Possibly. Since 6 April 2025 UK IHT has used a residence-based test, so overseas assets can fall within the charge for long-term UK residents. Relief for tax paid abroad may reduce the double charge, so a UK tax adviser should model both countries' liabilities together.

What does it cost to transfer Thai land to an heir?

Official Thai guidance gives an inheritance transfer fee of 2% of the appraised value, reduced to 0.5% between parents and descendants or between spouses. Other costs, such as legal fees, translations and any tax, depend on the case.

Do I need a separate will for Thai property?

Often yes, but it must be coordinated with your UK will so that neither revokes or contradicts the other. Practitioners recommend aligning cross-border wills to reduce probate delay. Have a Thai lawyer draft the Thai will and a UK solicitor review the combined effect.