How Much Inheritance Tax Applies to Japanese Real Estate? Filing and Tax Agents for Overseas Heirs
It is increasingly common for a relative who owned property in Japan to pass away while their heirs live abroad. Living outside Japan does not make inheritance tax someone else's problem — as a general rule, if the asset itself is located in Japan, a filing obligation arises regardless of where the heir lives.
In practice, though, several points work differently from a purely domestic inheritance: how the basic exemption is calculated, the filing deadline, whether exemptions apply, and appointing a tax agent. Here is what heirs based overseas should understand.
Who owes inheritance tax, and how much?
Inheritance tax is charged on the total value of assets acquired by inheritance or bequest, after deducting the basic exemption. As a general benchmark, the exemption is calculated as ¥30 million plus ¥6 million multiplied by the number of statutory heirs. Where the total stays under that threshold, no inheritance tax is generally due.
Working out whether you are under that threshold means valuing the real estate and other assets at their assessed value for inheritance tax purposes. In practice, Japanese real estate is valued using the road-price system or the fixed-asset tax assessment.
Benchmark figures
- Basic exemption formula
- ¥30M + ¥6M × heirs
- Filing and payment deadline
- 10months
- Range of inheritance tax rates
- 10–55%
Varies with the number of statutory heirs
From the day after learning of the inheritance
Progressive, based on the amount acquired
Do heirs living abroad still have a filing obligation?
Whether you count as liable for inheritance tax turns on your own nationality and residence, and on the residence and nationality history of the deceased. Even an heir with no Japanese nationality and no address in Japan will generally still owe inheritance tax on real estate located in Japan that they acquire by inheritance.
Assuming that living overseas puts you outside the reach of the Japanese tax office can lead to delinquency tax or a penalty for failing to file. It is worth confirming, early after the inheritance opens, exactly what scope of liability applies to each heir.
The governing provisions
- Inheritance Tax Act, Article 1-3
- Defines which individuals who acquire property by inheritance or bequest are liable for inheritance tax. Nationality and residence determine the scope of taxable assets — worldwide assets, or Japan-situs assets only.
- Inheritance Tax Act, Article 2
- Sets out the scope of assets subject to inheritance tax according to which category of taxpayer applies.
- Inheritance Tax Act, Article 22
- Inherited assets are, in principle, valued at fair market value as of the date the inheritance opens. In practice, land is valued using the National Tax Agency's asset valuation notice, chiefly the road-price system.
- Inheritance Tax Act, Article 27
- The inheritance tax return must be filed within 10 months of the day after learning that the inheritance has opened.
- Inheritance Tax Act, Article 62
- An heir with no address in Japan is required to appoint a tax agent and notify the relevant tax office.
Can heirs living overseas use the small residential lot exemption?
Where certain conditions are met, the land under the deceased's home can qualify for a substantial reduction in assessed value under the small-lot exemption. The conditions are detailed — whether the acquiring heir lived with the deceased, or otherwise qualifies as a heir who has not owned their own home in Japan for a set period.
Heirs who have lived abroad for a long stretch often fail to meet these conditions and end up outside the exemption. Since eligibility can swing the assessed value — and the tax bill — considerably, it is worth mapping out each heir's residence history early and confirming eligibility individually.
Inheritance tax rate table (partial, for reference)
| Amount acquired per statutory share | Rate | Deduction |
|---|---|---|
| Up to ¥10 million | 10% | — |
| Up to ¥30 million | 15% | ¥500,000 |
| Up to ¥50 million | 20% | ¥2,000,000 |
| Up to ¥100 million | 30% | ¥7,000,000 |
| Up to ¥200 million | 40% | ¥17,000,000 |
What does a tax agent do, and what documents are needed?
An heir with no address in Japan must appoint a tax agent as the point of contact for filing and payment, and notify the relevant tax office. The role is typically filled by a relative living in Japan, or by a tax accountant engaged for the purpose.
Filing generally requires family register documents, plus documents that substitute for a residence certificate for someone living overseas — a signature certificate or residence certificate issued by a Japanese diplomatic mission, or a notarized affidavit from a local notary. These often take time to obtain, so it is worth starting the process as soon as possible after the inheritance opens.
Common oversights and how to avoid them
✕Assuming inheritance tax does not apply while living abroad, and missing the 10-month filing deadline.
→As soon as you learn of the inheritance, check whether Japan-situs assets exist and confirm your own scope of liability.
✕Dividing the estate on the assumption the small-lot exemption would apply, only to find the conditions were not met.
→Before finalizing the division, confirm each heir's residence history and exemption eligibility with a tax accountant.
✕Leaving Japan without appointing a tax agent, leaving correspondence and refund procedures stalled.
→Appoint a tax agent and notify the relevant tax office before filing the inheritance tax return.
✕Underestimating how long a signature or residence certificate takes to obtain, and scrambling near the filing deadline.
→Book an appointment at the diplomatic mission early and work backward from the required documents.
Checklist after an inheritance opens
- Confirmed the nationality and residence history of both the deceased and each heir
- Identified all Japan-situs assets, including real estate and bank deposits
- Compared the total against the basic exemption (¥30 million + ¥6 million × statutory heirs)
- Confirmed the assessed value of the real estate for inheritance tax purposes
- Checked eligibility for the small residential lot exemption
- Appointed a tax agent and notified the tax office
- Started obtaining a residence certificate, signature certificate, or equivalent document
- Engaged a tax accountant to handle the filing
Frequently asked questions
- Q. Do we still need to file if every heir lives overseas?
- A. Generally yes, if there are Japan-situs assets — a filing obligation applies even where every heir lives abroad. Each heir may need to appoint their own tax agent.
- Q. What if we cannot finish the division within the 10-month deadline?
- A. You can file and pay based on a provisional division under the statutory shares, then adjust later through a correction request or amended return. Ask a tax accountant about the details.
- Q. Could we be taxed in both Japan and our home country?
- A. That depends on your home country's inheritance or estate tax rules and any applicable tax treaty. Consult a professional familiar with both jurisdictions about relief from double taxation.
- Q. If we plan to sell the inherited property soon, is there anything besides inheritance tax to watch for?
- A. Separately from the inheritance tax filing, a sale brings in capital gains tax and withholding on non-resident sellers. It helps to confirm in advance how the acquisition cost carries over from the deceased.
The SUMIMOTO Hub app shows AI-based area pricing and an estimated assessed value for property you expect to inherit, in multiple languages, to help heirs align before decisions are made. Always confirm the actual inheritance tax calculation, filing, and exemption eligibility with a Japanese tax accountant.
Thinking about an inheritance involving Japanese property?
We will send you the SUMIMOTO Hub service brochure, covering property valuation through to introductions to qualified professionals, in multiple languages.
Free, takes about a minute