Thai Probate for a Japanese Citizen: Estate Settlement Across Two Legal Systems

Every Thai Account Freezes Immediately

When Thai financial institutions receive official notification of a depositor's death, they freeze all accounts — savings, fixed deposits, joint accounts, and online banking access. ATM cards stop working, automatic debits halt, and any power of attorney previously granted by the deceased terminates instantly under both Thai and Japanese civil law.

Joint accounts do not automatically transfer to the surviving co-holder. Thai banks freeze the entire balance until a court order is presented, regardless of the joint account agreement's terms.

This freeze is not optional or negotiable. The bank requires a formal court appointment of an Estate Administrator before any funds are released.

Appointing an Estate Administrator Through Thai Courts

Foreign-issued probate grants and foreign executors are not automatically recognized in Thailand. To access frozen accounts or transfer real estate, the family must petition the Thai Court of First Instance to appoint a local Estate Administrator.

The process works in stages:

Retain a bilingual Thai attorney to draft and file the petition. The attorney needs certified, translated, and legalized copies of the deceased's Japanese Koseki Tohon (family register transcript) proving the relationship between the petitioner and the deceased.

Prepare the relationship documents. The Koseki Tohon must be obtained from the deceased's municipal office in Japan, translated into Thai or English, certified by the Japanese Ministry of Foreign Affairs, and legalized by the Royal Thai Embassy in Tokyo or the Consulate-General in Osaka.

File the petition. The attorney submits the petition, supporting documents, and heir consent forms to the court. If all heirs agree on the appointment, a hearing is scheduled.

Attend the hearing. The petitioner or their legal representative testifies — in person or via a court-approved web conference link. The court issues an official Appointment Order.

From filing to appointment order, the process typically takes four to six months when all heirs agree. If disputes arise among heirs, contested litigation can extend the timeline to 18 months or more.

What the Estate Administrator Can Do

Once appointed by the court, the administrator can:

• Liquidate frozen bank accounts at Thai institutions
• Pay outstanding local debts (medical bills, utilities, rent)
• Transfer remaining funds to Japanese heirs
• Manage or sell real estate holdings

Cross-border fund transfers must comply with Bank of Thailand foreign exchange regulations. The administrator typically works with the bank's international transfer department to document the legal basis for the outbound remittance.

The Real Estate Complication

Under Section 93 of the Thai Land Code, foreign nationals generally cannot own land in Thailand. Thai law treats condominium ownership differently from land, and the foreign-ownership quota and title status must be checked for the specific unit.

When a Japanese heir inherits Thai land, the Land Department requires the heir to sell or dispose of the property within a specified timeframe, typically up to one year. Condominium units are subject to separate foreign-ownership and title rules, and their transfer still requires the court-appointed Estate Administrator to execute the documentation.

Hospital Bills Can Hold the Body

Thai hospitals may hold remains when outstanding medical bills exist. If the deceased incurred significant medical costs before death — common in medical tourism cases or extended hospitalizations — the hospital may retain the body until the bills are settled.

The Estate Administrator appointment takes months, so families often need to pay these bills out of pocket first and reclaim the amount from the estate later. Travel insurance rescuer expenses may cover some hospital costs, but only if the insurer was notified promptly and pre-approved the expenses.

Dual Tax Exposure

Under the Japanese Inheritance Tax Law, if the deceased maintained a registered address in Japan at any point within the 10 years preceding death, their global estate — including Thai bank balances, property, and investments — is subject to Japanese inheritance tax. The Thai estate settlement does not release the family from this obligation; Japanese inheritance-tax rules can apply to qualifying overseas assets.

The family should consult a Japanese tax advisor alongside the Thai attorney to avoid double taxation and understand available treaty credits.

The Japanese Dies in Thailand — Family Emergency Guide includes Thai probate timelines, a court petition document checklist, and cross-border estate settlement workflows that track both the Thai and Japanese sides of the process simultaneously.