What Foreign Residents Should Do First After an Inheritance in Japan

2026年9月20日

Inheriting Property in Japan: A First-Action Guide for Foreign Residents

The most important step is to separate three questions immediately: which country’s law decides the heirs, which assets and debts belong to the estate, and whether Japan can tax what each person receives. These questions may have different answers in an international family.

Do not wait for every document before seeking help. If Japanese inheritance law applies, an heir may have only three months after learning that the inheritance has opened for them to accept it, accept it with limits, or renounce it. A Japanese inheritance tax return, when required, is generally due within ten months.

This guide is for foreign residents in Japan, people inheriting Japanese assets, and families whose heirs or property are spread across countries. It provides general information as of August 22, 2026, not a decision for an individual estate.

The essentials

The deceased person’s nationality can affect which country’s succession law applies.
Japanese inheritance tax rules separately examine the deceased person’s and recipient’s addresses, nationality, residence history, and immigration status.
An estate includes debts as well as bank deposits, real estate, investments, and other property.
Japanese land or buildings may create a registration duty even when an heir lives overseas.

TOC

Start with the law, the assets, and the tax scope

Living in Japan does not automatically make every part of an inheritance Japanese. Cross-border cases must be sorted into separate legal, administrative, and tax tracks.

1. Which law identifies the heirs?

Japan’s Act on General Rules for Application of Laws states that inheritance is governed by the deceased person’s national law. In Japanese, the deceased is often called the hisōzokunin (被相続人, decedent), while an heir is a sōzokunin (相続人, heir).

This rule matters because another country’s law may answer questions such as:

who qualifies as a spouse, child, or other heir;
the share each heir receives;
whether a particular will is effective;
whether certain relatives have protected rights; and
how debts pass to heirs.

The analysis may not end with one sentence in Japanese law. The deceased person’s home-country law may refer the issue back to Japanese law or treat real estate differently from movable assets. Family relationships recognized in one country may also require proof before a Japanese bank, court, or registry will act.

For that reason, nationality, habitual residence, marital status, and the location of each major asset should be confirmed before anyone assumes who inherits what.

2. What is actually in the estate?

Create one inventory covering property and obligations. A useful first version should include:

Japanese and overseas bank accounts;
land, houses, and condominium units;
listed shares, investment funds, bonds, and private-company interests;
vehicles, valuable personal property, and digital assets;
life insurance and retirement-related payments;
mortgages, personal loans, credit cards, unpaid taxes, and guarantees;
recent gifts that may affect Japanese inheritance tax; and
recurring expenses connected with vacant property or a business.

Do not treat a life insurance payment or jointly held account as automatically inside or outside the estate. Ownership under succession law, access under a financial institution’s rules, and treatment for Japanese tax can differ.

3. Can Japan tax the inheritance?

Japanese tax scope is not determined only by where the property is located. The National Tax Agency uses categories based on facts such as:

whether the recipient had an address in Japan when the inheritance began;
whether the recipient meets the special definition of a temporary resident;
whether the deceased was treated as a foreign decedent or non-resident;
the nationality and prior residence history of the people involved; and
whether the inherited property is in Japan or overseas.

Depending on those facts, Japan may tax worldwide inherited property or only property situated in Japan. The temporary-resident rules use technical definitions, including immigration-status and residence-history tests; “temporary” in everyday speech is not enough.

ここがポイント: The law that identifies the heirs and the law that imposes tax are separate questions. A foreign country’s succession law may govern the division while Japanese inheritance tax still applies to some or all of the property.

The first three months require the fastest decisions

The urgent question is whether the estate contains debts that an heir should not accept without investigation. Under Japan’s Civil Code, where its acceptance rules apply, an heir generally has three months from learning that succession has opened to them.

The three possible routes are commonly described as:

tanjun shōnin (単純承認, unconditional acceptance): the heir generally succeeds to the rights and obligations;
gentei shōnin (限定承認, qualified acceptance): liability is generally limited to the value received from the estate; and
sōzoku hōki (相続放棄, renunciation of inheritance): the heir does not succeed to the estate under the procedure.

Renunciation is not simply an agreement saying that another relative may take everything. It requires a filing with the competent family court when Japanese procedure applies. Qualified acceptance also has formal requirements and can become complicated when there are several heirs.

What to do before moving or spending estate property

During this period:

Secure homes, documents, keys, devices, and account information.
Identify loans, guarantees, unpaid taxes, rent, and property-management charges.
Record necessary preservation expenses and keep receipts.
Avoid selling, distributing, or using estate property for personal purposes before receiving advice.
Ask the family court promptly about an extension if the estate cannot be investigated in time.

Actions involving estate property can affect the available choices. Anyone considering renunciation or qualified acceptance should obtain Japanese legal advice before withdrawing money, disposing of belongings, or signing a division agreement.

Build a document file that works in two countries

A cross-border inheritance usually slows down at the proof stage, not at the family discussion stage. Japanese institutions need documents that establish death, family relationships, identity, addresses, and authority.

The exact list varies by court, bank, registry, nationality, and asset. Common items include:

death certificate or Japanese death record;
passport and residence-card copies;
Japanese family-register records, where they exist;
foreign birth, marriage, divorce, adoption, or family-status certificates;
certificates showing current and former addresses;
the original will and information about any probate or court process;
bank statements, securities records, title documents, and loan statements;
a family tree or heirship chart; and
powers of attorney when someone in Japan acts for an overseas heir.

Foreign public documents may need authentication or an apostille, depending on the issuing country and intended use. Japanese translations are also commonly required. Ask the receiving institution whether it needs the full document translated, who may translate it, how names should be written, and how recent the certificate must be.

Keep names consistent

A foreign name may appear in Roman letters, katakana, or kanji, and the order of family and given names may change between records. Prepare a short name-variation list linking every spelling to the same person.

This simple step can prevent repeated questions when a passport, residence record, overseas birth certificate, and bank record do not use identical formats.

How Japanese inheritance tax is screened

The first tax calculation is a threshold test, not simply a tax rate applied to the account balance. The National Tax Agency’s basic exemption is:

¥30 million + ¥6 million × the number of statutory heirs

For example:

one statutory heir: ¥36 million;
two statutory heirs: ¥42 million;
three statutory heirs: ¥48 million; and
four statutory heirs: ¥54 million.

The screening calculation begins with the gross estate and then considers matters such as eligible debts, funeral expenses, tax-exempt property, and gifts that must be added under Japanese rules. If the net taxable estate exceeds the basic exemption, filing and payment are generally required within ten months from the day after the death became known.

A simplified example

Suppose an estate has:

¥52 million in deposits and investments;
¥20 million in Japanese real estate;
¥5 million in eligible debts and funeral expenses; and
two statutory heirs.

Before considering valuation details, exemptions, credits, or gift add-backs, the rough net amount is ¥67 million. The basic exemption for two statutory heirs is ¥42 million, so the estate cannot be dismissed as “below the threshold.” A qualified tax calculation is needed.

This example does not show the final tax. Japanese inheritance tax is calculated through statutory shares and progressive rates before the amount is allocated and adjusted for each recipient. Spousal relief and other credits may reduce the final amount, but some benefits require a timely return and supporting documents.

Recent gifts can return to the calculation

The gift add-back period is changing in stages. According to the NTA’s current guidance:

for deaths through December 31, 2026, the relevant calendar-year gift period is generally the three years before death;
for deaths from January 1, 2027 through December 31, 2030, it generally begins on January 1, 2024; and
for deaths on or after January 1, 2031, it generally covers seven years before death, subject to the stated deduction for the period beyond the final three years.

Separate rules apply to property transferred under sōzokuji seisan kazei (相続時精算課税, taxation on settlement at the time of inheritance). Do not calculate the estate from the date-of-death account balances alone.

Overseas tax can create a second calculation

Another country may impose estate, inheritance, probate, capital-gains, or transfer taxes. Relief from double taxation depends on the countries, the type and location of property, the taxpayer, and any applicable treaty or domestic foreign-tax-credit rules.

Keep copies of foreign valuations, returns, assessment notices, payment receipts, and exchange-rate records. A tax professional may need them even when the Japanese return is prepared first.

Japanese real estate has its own deadline

An heir who receives land or a building in Japan must deal with registration as well as tax. Inheritance registration became mandatory on April 1, 2024, including for foreign and overseas-resident heirs.

An heir is generally required to apply within three years after learning that they inherited the real property. If property is acquired through a later estate-division agreement, another three-year period applies from learning of that acquisition. Failure without a justifiable reason can result in a civil fine of up to ¥100,000.

Older cases are included. Property inherited before April 1, 2024 but still unregistered generally must be addressed by March 31, 2027.

The 2026 rules also matter to owners who keep Japanese real estate. Mandatory registration of qualifying name or address changes began on April 1, 2026. Changes that occurred before that date generally must be registered by March 31, 2028; an unjustified failure can carry a civil fine of up to ¥50,000.

If the division is not finished

The Ministry of Justice provides a sōzokunin shinkoku tōki (相続人申告登記), described in English as a “Declaration-by-the-heir,” to help meet the initial inheritance-registration obligation in certain unresolved cases.

It does not complete the transfer based on a later division agreement and does not fully publicize the inherited rights. Once the division is concluded, the required registration reflecting that result still needs attention.

The Ministry of Justice lists a multilingual registration-information line at 0570-011289, weekdays from 9:00 to 17:00. Availability and call conditions should be checked on the official page.

A practical order for the first ten months

The safest workflow puts debt decisions first, valuation and heir confirmation next, and filing well before the deadline. The following order is a planning tool; individual cases may require different steps.

Immediately after the death becomes known

Obtain official proof of death.
Secure property and identify urgent payments.
Find wills without altering or disposing of them.
Notify relevant banks and insurers using their official procedures.
List potential heirs, nationalities, addresses, and countries involved.
Check for loans, guarantees, business liabilities, and unpaid taxes.

Before the three-month point

Confirm which country’s succession law is likely to apply.
Decide whether Japanese court procedures for acceptance or renunciation are relevant.
Seek an extension from the family court if necessary.
Avoid informal distribution while debt and ownership questions remain open.

During the asset and document stage

Obtain balances and valuations as of the date of death.
Identify Japanese and overseas property separately.
Collect evidence of debts and funeral expenses.
Review recent gifts and life-insurance payments.
Confirm translation and authentication requirements with each institution.
Check whether Japanese real-estate registration is required.

Well before the ten-month point

Determine whether a Japanese inheritance tax return is required.
Coordinate Japanese and overseas valuations.
Confirm whether reliefs or credits depend on a filed return.
Arrange funds for tax without assuming every inherited account can be accessed quickly.
File and pay by the deadline when required.

If an heir lives outside Japan, ask a Japanese tax professional whether a nōzei kanrinin (納税管理人, tax representative) must be appointed for inheritance-tax procedures.

Common mistakes that create avoidable problems

Most serious errors come from treating one deadline, one country, or one document as the whole case. Watch for these patterns:

Waiting ten months to investigate debts. The acceptance or renunciation issue can arise much earlier.
Assuming residence decides the heirs. The deceased person’s national law may govern succession.
Assuming foreign assets are outside Japanese tax. Worldwide tax exposure can apply in some residence and nationality combinations.
Counting only cash and real estate. Investments, private-company interests, insurance-related amounts, digital assets, debts, and recent gifts may matter.
Using today’s account balance. Valuation generally focuses on the date of death and asset-specific rules.
Dividing property informally before advice. Use or disposal of estate assets can have legal consequences.
Ignoring unregistered Japanese property. Registration duties apply to overseas heirs too.
Assuming a foreign certificate will be accepted as issued. Translation, authentication, or additional relationship evidence may be necessary.
Expecting a bank to identify every heir. Each institution follows its own verification process; it does not replace a legal analysis.

Which professional or office should you contact?

No single office resolves every part of an international inheritance. Use the specialist who matches the decision in front of you.

A Japanese attorney, or bengoshi (弁護士), can advise on succession disputes, applicable law, court procedures, and renunciation.
A judicial scrivener, or shihō shoshi (司法書士), commonly handles real-estate registration and related document work.
A certified public tax accountant, or zeirishi (税理士), can calculate Japanese inheritance tax and prepare the return.
The family court, or katei saibansho (家庭裁判所), handles matters such as renunciation, qualified acceptance, extensions, and estate-division proceedings under its jurisdiction.
The Legal Affairs Bureau, or Hōmukyoku (法務局), provides real-estate registration information.
The relevant tax office, or zeimusho (税務署), handles Japanese tax administration; professional advice may still be needed for an individual calculation.
An attorney or tax adviser in the other country should check local succession, probate, reporting, and tax obligations.

Ask whether the adviser regularly handles international estates involving the relevant country. A domestic-only calculation may miss a foreign filing, while an overseas probate adviser may not recognize Japan’s three-month or ten-month deadlines.

What to check next

A useful first appointment should happen before the full estate is understood. Bring a one-page timeline, a family chart, the known asset-and-debt list, and copies of the available identity and death documents.

The immediate watchpoints are concrete:

the date each potential heir learned of the death and their possible status;
any three-month decision involving acceptance or renunciation;
the deceased person’s nationality and any possible referral between legal systems;
the address, nationality, immigration status, and residence history relevant to Japanese tax scope;
the ten-month Japanese tax deadline;
the three-year registration deadline for Japanese real estate; and
overseas probate, reporting, and tax deadlines that may run at the same time.

Do not wait for a bank to release funds before building this timeline. In a cross-border estate, the calendar—not the eventual division agreement—is often the first source of risk.

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