SEISEI INSIGHTS — Succession

The Small-Scale Land Special Rule: Cutting Home-Land Valuation by Up to 80%

2026-06-17

"My home sits on highly valued land — I worry whether the inheritance tax can be paid." We hear this concern repeatedly from clients whose wealth is concentrated in real estate. Japan's inheritance tax contains a mechanism that sharply reduces the assessed value of land the deceased lived on or used for business: the "special rule for small-scale residential and business land" under Article 69-4 of the Act on Special Measures Concerning Taxation.

Three Categories, Three Reduction Rates

The rule sets, by use of the land, the proportion of value brought into the taxable estate (i.e., the portion remaining after reduction) and a size limit.

Category	Size limit	Portion included in taxable value	Effective reduction
Residential land (the home)	330㎡	20%	80% off
Business-use land	400㎡	20%	80% off
Leased (rental) land	200㎡	50%	50% off

Note that leased land is reduced only by 50%, unlike the 80% for home and business land. If home land assessed at ¥100 million qualifies as residential land, for example, the taxable value can be compressed to ¥20 million.

Relation to the Basic Deduction

The reduced value is then read against the basic deduction for the estate, which is "¥30 million + ¥6 million × number of statutory heirs" (Inheritance Tax Act, Art. 15). With three statutory heirs the basic deduction is ¥48 million; where the taxable value in the example has already fallen to ¥20 million, no taxable estate may arise absent other significant assets.

"Who Inherits" Changes the Outcome

The rule is not unconditional. For residential land, the relative who acquires it must, in principle, continue to hold and live on the land from the start of inheritance through the filing deadline (Act on Special Measures Concerning Taxation, Art. 69-4(3)(ii)). Selling the inherited home land before the filing deadline forfeits the relief.

A spouse, by contrast, enjoys a special exception and may apply the rule regardless of continued residence or holding. In addition, where the deceased left neither spouse nor a co-residing heir, a relative who had not lived in a home owned by themselves (and related parties) for a set period may qualify — the so-called "homeless child" requirement, which sits within the same item. That requirement has been framed to exclude cases where the dwelling lived in is owned by the relative's spouse or a specially related corporation, so that a merely formal transfer of ownership does not satisfy it.

Treat It as a Structure

Assessed value, use, and who inherits — these three combine to determine the outcome. What we can offer in general terms ends at the framework of the rule; whether it applies in a given case depends on the specifics. Mapping the area and assessed value of home, business, and rental land, together with the successor, onto a single diagram is the starting point for thinking about an estate that includes real property.

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.

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