Wills and estate planning in Thailand

Why a Thai will for Thai assets

Thailand generally recognises foreign wills, so the problem is not validity but friction. Administering a foreign will over Thai assets means certified translations, legalisation of foreign documents, evidence of the foreign law under which the will was made, and a Thai court process that must digest all of it. That can add months and meaningful cost to an administration, during which bank accounts are frozen and property cannot be transferred. A Thai-law will, in Thai or bilingual form, naming a Thailand-based executor and covering only Thai assets, moves through the same court in a fraction of the time.

The alternative to any will is Thai intestacy, which distributes the estate by statutory classes of heir, spouse and children first, then parents, siblings and beyond. The statutory outcome is rarely what an international family would have chosen, unmarried partners receive nothing under it, and intestate administration is slower still. For anyone with a condo, Thai bank accounts, vehicles or a Thai company shareholding, the case for a local will is close to absolute.

Forms of will Thai law recognises

The Civil and Commercial Code recognises several forms. Two matter in practice; the others exist for completeness.

Witnesses and beneficiaries must be kept separate: a beneficiary, or a beneficiary's spouse, who acts as witness forfeits the gift. Executors should be named explicitly, with a substitute, and there is real value in choosing an executor who is in Thailand, speaks Thai or has professional support, and is likely to outlive you.

Probate reality

Thailand has no non-court probate for significant assets: an executor must be appointed by court order before banks will release funds or the Land Department will transfer property. The process runs through the Thai courts with a petition, a hearing at which the executor is examined, and an order typically issued some weeks after. For a clean, uncontested Thai-will estate, several months from death to full asset transfer is a realistic expectation; contested estates, foreign wills and missing documents each add time. Banks freeze accounts on notice of death, which is why couples here often keep some liquidity in each spouse's sole name and consider joint arrangements carefully, since survivorship does not operate on Thai accounts the way common-law couples expect.

Cross-border coordination

A Thai will must be drafted to sit alongside your other wills, not fight them. The classic drafting error is a revocation clause: a new home-country will that revokes all previous wills worldwide silently kills the Thai will, and vice versa. Each will should be expressly limited to its jurisdiction's assets and expressly preserve the others. Beyond drafting mechanics, the estate plan should be read as one system: Thai assets under the Thai will, offshore structures passing by their own mechanisms, home-country assets under the home will, and the whole tested against home-country estate taxes, which for UK and US connected families will usually dwarf the modest Thai inheritance tax covered in our separate briefing. Where a condo is held through an offshore company, the shares pass offshore and the Thai will may not need to touch the property at all; the structure and the wills must be designed together.

Review the set of wills after every major event: marriage, divorce, a birth, a new jurisdiction, a significant purchase or sale. An estate plan that was coherent five years ago has usually drifted.

Guardianship of minors

For families raising children in Thailand, guardianship is the part of the plan that matters more than any asset. If both parents die, a Thai court appoints a guardian, and a nomination in a will carries significant weight even though the court's decision is governed by the child's best interests. The will should nominate guardians, including a Thailand-based interim arrangement if the permanent guardians live abroad, and should be joined up with practical planning: who collects the children from school that day, who has authority and funds in the first weeks, how the children travel to guardians overseas, and how school fees and the household are paid in the interim. A testamentary structure that provides an executor with immediate liquidity for the children's care is worth more in that moment than any amount of elegant tax planning.

Beyond the will: incapacity, nominations and liquidity

A complete plan covers the situations a will does not reach. Thailand's National Health Act recognises advance directives, so a living will declining futile end-of-life intervention can be prepared and lodged with your hospital, and for families here that document belongs alongside the will. Incapacity is the harder gap: ordinary powers of attorney are of limited use once the giver loses capacity, and court-appointed guardianship of an incapacitated adult is slow, so structuring access to funds while both spouses are alive and well, through account arrangements and offshore mechanisms, is part of the estate plan rather than an afterthought.

Two further mechanics pass outside the will entirely and should be checked against it. Life insurance proceeds go to the named beneficiary directly, so nominations must be kept current, and they are often the fastest liquidity the family receives in the first weeks. And practical access matters as much as legal entitlement: an inventory of accounts, titles, policies, keys and contacts, held where the executor and the surviving spouse can actually find it, shortens the hardest months more than any drafting refinement. We keep exactly this operational map for client families, updated annually, because documents that cannot be found do not exist when they are needed.

Putting the plan in place

The work is not complicated: an inventory of Thai assets, a bilingual Thai will professionally drafted, executors and guardians chosen and told, documents stored where they will be found, and the foreign wills checked for conflicts. It takes a few weeks and it is usually finished within a family's first season in Thailand, or it is not done for a decade. Asia Global Partners coordinates the drafting with Thai counsel, holds the operational map of the estate, and, where the day comes, supports executors and guardians through the probate process itself. It is quiet work, done once and reviewed lightly each year, and it is some of the most valuable we do.

This briefing is general information, not legal, tax or investment advice. Thai rules change frequently and individual cases differ. Verify current requirements with the relevant authorities, including the Immigration Bureau, the Board of Investment, the Land Department, the Department of Business Development and the Revenue Department, and take advice on your own facts before acting.