Two Structures Around the Home and Insurance: Small Residential Land and the Exemption Frames

"My home is worth about ¥100 million. If something were to happen to me, how much inheritance tax would my family pay?" We hear this repeatedly from people who hold a home and a family in Japan. No answer is possible without confirming the premises — but it is by no means certain that "¥100 million is taxed as it stands." Japan's inheritance tax provides two structural reliefs built around the home and life insurance.

The Home — the Small-Scale Residential Land Special Measure

The first is the small-scale residential land special measure (Article 69-4 of the Act on Special Measures Concerning Taxation). Where residential land that the decedent (or a household member) used for living is acquired by a qualifying heir, the portion up to 330㎡ may be valued at 20% of its assessed value — that is, an 80% reduction — in calculating the inheritance tax base. Even a home assessed at ¥100 million can, where the requirements are met, have its taxable valuation substantially compressed.

The qualifying acquirers carry requirements. Where the spouse acquires the property, no additional requirements of continued residence or holding are imposed. Where a relative who lived with the decedent acquires it, continued residence and holding through the filing deadline are required. For a relative who did not live with the decedent, the so-called "house-less heir" (ie-naki-ko) requirement must be met — broadly, that the acquirer has not, for a defined period, lived in a home owned by themselves or a close relative. The requirements are highly fact-specific, and confirming the facts is essential.

The measure is not limited to the home. Land used for the decedent's business qualifies for an 80% reduction up to 400㎡, and land used for a leasing business for a 50% reduction up to 200㎡. Residential-use and specified-business-use land may be combined within defined limits, but combining with leasing-use land requires an area-adjustment calculation.

The Life-Insurance and Retirement-Allowance Exemption Frames

The second is the exemption frame for life insurance proceeds and retirement allowances. Of the life insurance proceeds an heir receives, "¥5 million × the number of statutory heirs" is not included in the inheritance tax base (Article 12, Paragraph 1, Item 6 of the Inheritance Tax Act). Death retirement allowances carry the same "¥5 million × the number of statutory heirs" frame (Item 7 of the same paragraph).

Seen structurally, the same cash is treated differently depending on where it sits. Inherited as a bank deposit, the full amount enters the tax base; received by the family as life insurance proceeds, the amount within the exemption frame is excluded from it. With three statutory heirs, the ceiling is ¥15 million for insurance and ¥15 million for the retirement allowance — ¥30 million of exemption frame in total. Insurance is a means of protection and, at the same time, through this frame, an instrument that shapes the composition of the estate.

The Choices Exist Only Early

What these measures share is that each becomes an option only when the structure is put in place "while still healthy," not "after the inheritance has occurred." Who should acquire the home to satisfy the special measure's requirements? How far should the insurance exemption frame be used? The room to choose in such design widens the more time there is. The best moment for succession planning is not after the inheritance, but now — when the whole picture of the assets can still be drawn onto a single structural diagram.

This article provides general information on tax systems and does not constitute individual tax consultation. Specific filings and tax computations are handled by licensed partner tax accountants whom we introduce.