What Is Japan's Inheritance Tax?
Japan's inheritance tax (souzokuzei, 相続税) is levied on individuals who acquire assets through inheritance or bequest from a deceased person. Governed by the Inheritance Tax Act (相続税法, Act No. 73 of 1950), Japan uses an acquisition-based taxation system — each heir is taxed based on the value of assets they actually receive. However, the calculation method is unique: the total estate value is first reduced by the basic deduction, then hypothetically divided according to statutory shares to determine the total tax, which is then allocated proportionally to each heir based on their actual acquisition.
Japan's inheritance tax is among the highest in the world, with a maximum marginal rate of 55%. Understanding the rates, deductions, and filing requirements is essential for anyone inheriting assets in Japan — whether resident or non-resident.
Inheritance Tax Rates: 8 Progressive Brackets
Under Article 16 of the Inheritance Tax Act, Japan applies the following progressive tax rates to the portion of the estate each statutory heir would receive under the statutory share:
| Taxable Amount per Statutory Share | Tax Rate | Deduction |
|---|---|---|
| Up to ¥10,000,000 | 10% | ¥0 |
| ¥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 |
How to Calculate: Step-by-Step
- Determine the total taxable estate — add up all assets (real estate, financial assets, life insurance proceeds above the exemption, etc.) and subtract debts, funeral expenses, and the basic deduction
- Divide by statutory shares — hypothetically allocate the net estate according to each heir's statutory share (e.g., spouse gets 1/2, each child gets 1/4 if there are two children)
- Apply the tax rate table to each hypothetical share to calculate the total inheritance tax
- Allocate the total tax to each heir based on their actual share of the estate
- Apply individual credits (spouse deduction, minor deduction, disability deduction, etc.)
Practical Example
Estate: ¥200,000,000 (after debts) Heirs: Spouse + 2 children (3 legal heirs)
- Basic deduction: ¥30,000,000 + ¥6,000,000 × 3 = ¥48,000,000
- Taxable estate: ¥200,000,000 − ¥48,000,000 = ¥152,000,000
- Spouse's statutory share (1/2): ¥76,000,000 → tax: ¥76,000,000 × 30% − ¥7,000,000 = ¥15,800,000
- Each child's statutory share (1/4): ¥38,000,000 → tax: ¥38,000,000 × 20% − ¥2,000,000 = ¥5,600,000 each
- Total inheritance tax: ¥15,800,000 + ¥5,600,000 + ¥5,600,000 = ¥27,000,000
If the spouse takes exactly their legal share, the spouse deduction reduces their portion to ¥0, and the two children each pay ¥6,750,000 (proportional allocation of the remaining tax).
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Try for free →Basic Deduction (基礎控除)
Under Article 15 of the Inheritance Tax Act, the basic deduction is calculated as:
> ¥30,000,000 + ¥6,000,000 × number of legal heirs
If the total taxable estate falls below this threshold, no inheritance tax return is required.
| Number of Legal Heirs | Basic Deduction |
|---|---|
| 1 | ¥36,000,000 |
| 2 | ¥42,000,000 |
| 3 | ¥48,000,000 |
| 4 | ¥54,000,000 |
| 5 | ¥60,000,000 |
Important Rules for Counting Legal Heirs
- Persons who renounced inheritance are still counted as legal heirs for the purpose of calculating the basic deduction (Art. 15(2))
- Adopted children are capped: if there are biological children, only 1 adopted child counts; if no biological children, up to 2 adopted children count (Art. 15(2))
Key Deductions and Exemptions
1. Spouse Deduction (配偶者の税額軽減)
Under Article 19-2 of the Inheritance Tax Act, the surviving spouse is exempt from inheritance tax on assets up to the greater of:
- ¥160,000,000, or
- The spouse's statutory share of the estate
This means that if a spouse inherits exactly their legal share (typically 1/2 when there are children), their inheritance tax is always zero — regardless of the total estate size. This is one of the most powerful tax benefits in the Japanese system.
Requirements: - The tax return must be filed within the filing deadline (even if no tax is owed) - The estate must be divided by the filing deadline (or a "prospective division notice" must be submitted) - Only legally married spouses qualify (common-law partners do not)
2. Minor Deduction (未成年者控除)
Under Article 19-3, heirs under age 18 receive a tax credit of:
> ¥100,000 × (18 − age at the time of inheritance)
Example: A 10-year-old heir receives a credit of ¥100,000 × 8 = ¥800,000.
3. Disability Deduction (障害者控除)
Under Article 19-4, heirs with disabilities receive the following credits:
| Category | Credit Amount |
|---|---|
| General disability | ¥100,000 × (85 − age at inheritance) |
| Severe disability (特別障害者) | ¥200,000 × (85 − age at inheritance) |
Example: A 40-year-old heir with severe disability receives ¥200,000 × 45 = ¥9,000,000 in tax credit.
4. Small Residential Land Exemption (小規模宅地等の特例)
Under Article 69-4 of the Act on Special Measures Concerning Taxation (租税特別措置法), this is one of the most impactful exemptions available. It reduces the taxable value of certain land used for the decedent's residence or business:
| Type of Land | Maximum Area | Reduction Rate |
|---|---|---|
| Primary residence (特定居住用宅地) | 330 m² | 80% reduction |
| Business-use land (特定事業用宅地) | 400 m² | 80% reduction |
| Rental business land (貸付事業用宅地) | 200 m² | 50% reduction |
Example: A residential property valued at ¥100,000,000 would be assessed at only ¥20,000,000 after the 80% reduction — potentially saving tens of millions of yen in inheritance tax.
Eligibility requirements: - The heir must continue to reside in / hold the property until the filing deadline - For non-resident heirs: special "家なき子" (homeless child) provisions may apply if the heir has not owned a home in Japan for the past 3 years - This exemption requires filing a tax return even if no tax is owed after the reduction
5. Life Insurance Exemption (生命保険金の非課税枠)
Under Article 12(1)(v) of the Inheritance Tax Act, death insurance proceeds received by legal heirs are tax-exempt up to:
> ¥5,000,000 × number of legal heirs
| Number of Legal Heirs | Tax-Free Life Insurance |
|---|---|
| 1 | ¥5,000,000 |
| 2 | ¥10,000,000 |
| 3 | ¥15,000,000 |
| 4 | ¥20,000,000 |
A separate identical exemption exists for death retirement benefits (死亡退職金) under Article 12(1)(vi): ¥5,000,000 × number of legal heirs.
Filing Deadline: 10 Months from Death
Under Article 27 of the Inheritance Tax Act, the inheritance tax return must be filed within 10 months from the date the heir learned of the death of the decedent. The return is filed with the tax office that has jurisdiction over the decedent's last domicile.
Penalties for Late Filing
| Penalty | Rate |
|---|---|
| Failure-to-file surcharge (無申告加算税) | 15–20% (5% if voluntary) |
| Delinquency tax (延滞税) | 7.3–14.6% per annum |
| Heavy penalty for concealment (重加算税) | 35–40% |
Payment Options
- Lump sum payment at the time of filing (default)
- Installment payment (延納): available for up to 20 years with collateral, if the tax exceeds ¥100,000 and cash payment is difficult
- Payment in kind (物納): permitted when installment payment is also impractical; real estate and securities can be used
Renunciation of Inheritance (相続放棄)
Under Article 915 of the Civil Code, an heir may renounce their inheritance by filing a declaration with the family court within 3 months from the date they learned of the inheritance (the "deliberation period", 熟慮期間).
Key points: - Renunciation is all-or-nothing — you cannot selectively reject debts while keeping assets - Once accepted by the court, renunciation is irrevocable - The 3-month period can be extended by court petition in exceptional circumstances - Renunciation is frequently used when the decedent's debts exceed their assets
Non-Resident Taxation: The 10-Year Rule
Japan's inheritance tax has broad jurisdictional reach. Under Articles 1-3 and 2 of the Inheritance Tax Act, the scope of taxation depends on the domicile and nationality of both the decedent and the heir.
Taxation Categories
| Category | Who | Taxable Scope |
|---|---|---|
| Unlimited taxpayer (resident) | Heir domiciled in Japan | Worldwide assets |
| Unlimited taxpayer (non-resident) | Japanese national heir who lived in Japan within the past 10 years | Worldwide assets |
| Limited taxpayer (resident) | Foreign national heir domiciled in Japan on a temporary visa, inheriting from a temporary resident decedent | Japan-sited assets only |
| Limited taxpayer (non-resident) | Heir with no Japan domicile in past 10 years AND decedent with no Japan domicile in past 10 years | Japan-sited assets only |
The Critical 10-Year Rule
If you are a Japanese national living abroad, you remain subject to Japan's inheritance tax on your worldwide assets as long as you (or the decedent) had a domicile in Japan at any point within the past 10 years (Art. 1-3(1)).
This means: - A Japanese citizen who moved abroad 5 years ago and inherits from a parent in Japan → taxed on worldwide assets (including overseas bank accounts, foreign real estate, etc.) - A Japanese citizen who has lived abroad continuously for 10+ years, inheriting from a parent who also left Japan 10+ years ago → taxed only on Japan-sited assets - A foreign national who has never lived in Japan, inheriting Japan-based assets → taxed only on Japan-sited assets
This rule was specifically designed to prevent international tax avoidance through short-term emigration.
Japan-Sited Assets (国内財産)
Assets considered "sited in Japan" for inheritance tax purposes include: - Real estate located in Japan - Deposits in Japanese bank accounts - Securities of Japanese corporations - Business assets of a Japanese business - Claims against persons domiciled in Japan
Double Taxation Relief
Under Article 20-2 of the Inheritance Tax Act, if inheritance tax (or equivalent) has been paid in a foreign country on assets also subject to Japanese inheritance tax, a foreign tax credit is available to prevent double taxation. Japan also has inheritance/estate tax treaties with several countries (including the United States).
Estate Planning Strategies
Lifetime Gifting (生前贈与)
Under the annual gift tax exclusion (Art. 21-5), each person can receive up to ¥1,100,000 per year gift-tax-free from any single donor. However, gifts made within 7 years before death are added back to the taxable estate (gradually extended from 3 years to 7 years for gifts made from 2024 onward).
Settlement-at-Inheritance Taxation (相続時精算課税制度)
Under Article 21-9, parents/grandparents aged 60+ can gift up to a cumulative ¥25,000,000 to children/grandchildren aged 18+ without gift tax. These gifts are added back to the estate at inheritance. From 2024 onward, an additional ¥1,100,000 annual exclusion applies within this system.
Life Insurance Planning
Purchasing life insurance up to the tax-free threshold (¥5,000,000 × heirs) converts cash (fully taxable) into insurance proceeds (partially exempt) — a straightforward and widely used strategy.
Summary and Practical Advice
Japan's inheritance tax system combines high marginal rates (up to 55%) with generous deductions and exemptions. The key principles to remember:
- Calculate the basic deduction first — many estates fall below the threshold and require no filing
- The spouse deduction is extremely powerful — up to ¥160,000,000 or the legal share
- The small residential land exemption can save tens of millions of yen — but requires continued residence/ownership and timely filing
- File within 10 months — most deductions and exemptions require on-time filing as a condition
- Renunciation must be decided within 3 months — don't delay if debts are a concern
- Non-resident Japanese nationals beware — the 10-year rule means worldwide assets may be taxed
- Seek professional advice early — the interaction of multiple deductions, property valuations, and international tax rules makes inheritance tax one of the most complex areas of Japanese taxation
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*Houritsu no Mikata Editorial Team | Published April 29, 2026*
