Japan Curbs Real Estate Inheritance Tax Schemes — FY2026 Reform: Rental Properties Acquired Within 5 Years & Mini-Lot Products Shift to Market Valuation (Effective January 2027)

Japan's FY2026 (Reiwa 8) tax reform introduces rules targeting a widely-used inheritance tax reduction strategy involving rental real estate. Under the new rules, rental properties acquired within 5 years before the decedent's death will be valued at market price rather than the lower assessed value (路線価 / road price). Real estate mini-lot investment products (不動産小口化商品) will also shift to market valuation regardless of acquisition date. The changes apply to assets inherited or gifted on or after January 1, 2027.

The Strategy Being Targeted

The following pattern of inheritance tax reduction has been widely used:

• Borrow heavily to purchase rental real estate (apartment buildings, condominiums, etc.)
• Real estate is assessed for inheritance tax using the assessed value (路線価), which is typically 70–80% of market value — already a discount
• The loan balance is deducted as a liability, further reducing the taxable estate
• Net result: holding the same value in cash would create a far larger inheritance tax bill

The National Tax Agency addressed "tower condominium tax avoidance" via a 2022 administrative notice, but the FY2026 reform tackles the broader category of rental real estate at the statutory level.

The New Rules in Detail

Understanding the "Within 5 Years" Rule

• For inheritances occurring on or after January 1, 2027: rental real estate acquired on or after January 1, 2022 may fall within the 5-year window and be subject to market valuation.
• Rental real estate held for more than 5 years before death continues to be assessed at the standard road-price method — the change does not apply retroactively in that sense.
• "Acquired for consideration" (i.e., by purchase) is the trigger. Real estate inherited or gifted to the decedent is expected to be out of scope (details to be clarified by Cabinet Order and administrative guidance).

What This Means for Estate Planning in 2026

The new rules apply to inheritances from January 1, 2027 onward. Estates where death occurs on or before December 31, 2026 are assessed under the existing rules. However, since the timing of death cannot be planned, the practical takeaway is to review your estate plan now:

• If you were considering taking on debt to purchase rental property primarily for inheritance tax reduction, the expected benefit will be significantly reduced from 2027 onward.
• If you hold or are considering purchasing real estate mini-lot products as an estate planning tool, the tax benefit is effectively eliminated — reconsider with updated assumptions.
• Rental property already held for more than 5 years remains assessable under the road-price method and is not affected by this change.

How Sakura Central Legal Office Can Help

We assist with overall estate planning, will drafting (holographic and notarised), and inheritance procedure support. Where tax analysis is required, we can refer you to a coordinating tax professional. Free initial consultation available.