Japan Inheritance Tax for Foreign Nationals: What Overseas Owners Must Know

Japan's inheritance tax (相続税) is one of the highest in the world, with rates reaching 55% on large estates. For foreign nationals who own Japanese real estate — or whose family members do — understanding how Japanese inheritance tax works is essential. Getting it wrong can result in a tax bill that exceeds the value of the assets inherited.

Who Is Subject to Japanese Inheritance Tax?

Whether you are subject to Japanese inheritance tax depends on two factors: the location of the assets and the domicile of the deceased and the heirs.

Japanese Property Is Always Taxed in Japan

If you inherit real estate located in Japan, that property is always subject to Japanese inheritance tax — regardless of where you live or what nationality you hold. This rule has been in place since at least 2018, when Japan closed the overseas trust loophole that had allowed some high-net-worth families to structure around it.

This means: even if you are a foreign national living outside Japan and have never set foot there, inheriting a Japanese property triggers a Japanese inheritance tax filing obligation.

Overseas Assets

Whether overseas assets (bank accounts, securities, foreign real estate) are subject to Japanese inheritance tax depends on whether the deceased was domiciled in Japan. For most overseas property owners who have lived abroad for many years, this is unlikely to apply — but the rules are complex enough to warrant professional advice in any specific case.

How the Tax Is Calculated

Step 1: Basic Exemption (基礎控除)

The first amount subtracted from the taxable estate is the basic exemption:

Basic Exemption = ¥30,000,000 + (¥6,000,000 × Number of statutory heirs)

For example, if the deceased left one property worth ¥50,000,000 and has two heirs (a spouse and one child), the basic exemption is ¥30,000,000 + (¥6,000,000 × 2) = ¥42,000,000. Only the remaining ¥8,000,000 is taxable.

Step 2: Tax Rates

Taxable Amount per Heir	Tax Rate	Deduction
Up to ¥10,000,000	10%	—
¥10,000,001 – ¥30,000,000	15%	¥500,000
¥30,000,001 – ¥50,000,000	20%	¥2,000,000
¥50,000,001 – ¥100,000,000	30%	¥7,000,000
¥100,000,001 – ¥200,000,000	40%	¥17,000,000
¥200,000,001 – ¥300,000,000	45%	¥27,000,000
¥300,000,001 – ¥600,000,000	50%	¥42,000,000
Over ¥600,000,000	55%	¥72,000,000

Key Deductions and Exemptions

Spouse exemption (配偶者控除) — A surviving spouse pays no inheritance tax on amounts up to ¥160,000,000 or their legal share of the estate, whichever is greater. This is one of the most significant tax benefits in Japanese inheritance law.
Minor child deduction — Minor heirs receive a deduction of ¥100,000 per year until age 18.
Residential land small business exemption (小規模宅地等の特例) — The assessed value of certain residential or business land used by the deceased can be reduced by up to 80% for inheritance tax purposes. Eligibility rules are complex but the benefit can be enormous for urban property owners.

How Is the Property Valued?

Japanese inheritance tax uses a specific valuation method called 路線価 (rosenka) — the assessed value per square meter of road frontage. This value is typically 60–80% of market value, which provides some natural cushion. However, for properties in prime locations (central Tokyo, for example), even the rosenka-based value can be very high.

Buildings are valued separately based on the 固定資産税評価額 (fixed asset assessed value) — typically 50–70% of replacement cost for older structures.

Filing Deadlines: 10 Months

The Japanese inheritance tax return must be filed and the tax paid within 10 months from the date of the deceased's death. This deadline applies even if the estate has not been fully divided among heirs, and even if you are still in the process of gathering documents.

Missing this deadline triggers late payment surcharges. Extensions are possible but must be applied for in advance.

Practical Steps When a Family Member Passes Away

Determine what Japanese assets exist — property, bank accounts, securities, business interests
Identify all statutory heirs — under Japanese law, the order of inheritance is: spouse, children, parents, siblings. Even distant heirs may have rights.
Appoint a tax representative — if heirs live abroad, a Japanese tax representative (納税管理人) is required to receive tax notices and act on behalf of non-resident heirs
Obtain a Japanese tax accountant (税理士) — inheritance tax returns are highly complex and almost always require professional preparation
Gather valuation documents — rosenka maps, fixed asset tax notices, registration documents
File the return and pay within 10 months

Double Taxation: Can You Claim a Credit?

Japan has inheritance tax treaties with only a handful of countries — notably the United States, United Kingdom, and France. Under these treaties, tax paid in Japan may be credited against inheritance or estate tax owed in your home country.

For countries without a treaty, double taxation is a real risk: the same inherited property may be taxed in both Japan and your home country. The rules differ significantly by jurisdiction. Always seek advice from a professional familiar with both countries' tax systems.

Planning Ahead

If you own Japanese property and are concerned about inheritance tax exposure for your heirs, there are legitimate planning strategies available — including lifetime gifting (生前贈与), life insurance (which has separate inheritance tax treatment), and trust structures. These must be implemented while you are alive and must comply with Japanese law.

How Japan YES Can Help

Japan YES Property Management can connect you with qualified Japanese tax accountants (税理士) who specialize in international inheritance cases, and can serve as your tax representative throughout the estate administration process. We receive and translate all official correspondence, coordinate with your advisors, and ensure nothing falls through the cracks during what is always a difficult time.