"Buy a ¥1 billion apartment just before you die." This was the inheritance tax strategy spreading among Japan's wealthy. When a 94-year-old borrowed ¥1 billion to purchase real estate and filed inheritance tax as "zero yen," Japan's Supreme Court ruled it violated "tax burden fairness." Now, the National Tax Agency is seriously cracking down on an estimated ¥50 billion in tax avoidance.

Does Wealth Really Disappear After Three Generations?

"Wealth disappears after three generations of inheritance." A phrase that symbolizes the severity of Japan's inheritance tax. Former Prime Minister Kakuei Tanaka's famous estate in Mejiro was largely surrendered as tax payment, later becoming a public park.

But what's the reality? The main reason Japan's wealthy lose their fortunes isn't inheritance tax. It's family disputes. In fact, the wealthy have been using "every trick in the book" to avoid inheritance taxes.

The "Valuation Magic" of Real Estate

Why does real estate enable tax avoidance? The mechanism lies in the gap between valuations.

Under Japan's inheritance tax system, real estate is valued primarily using "road price method" for land and "fixed asset tax valuation" for buildings. These valuations are set lower than actual market prices.

For rental properties, values drop even further due to "tenant rights" and "rental restrictions." Paradoxically, the more tenants you have, the lower your inheritance tax valuation becomes.

The "Last-Minute Purchase at Age 94" Supreme Court Case

The National Tax Agency's November 2025 document "Issues Surrounding Property Valuation" highlights a landmark case that reached the Supreme Court.

Mr. A, who passed away at 94, borrowed approximately ¥1 billion about three years before his death. He used this to purchase a rental apartment building in Suginami Ward and a condominium in Kawasaki City for a combined ¥1.38 billion. At inheritance, these properties were reported at the statutory valuation of approximately ¥330 million.

Furthermore, by deducting the ¥1 billion loan balance as debt, the inheritance tax was filed as "zero yen."

The 2022 Supreme Court ruling condemned this practice as "contrary to fair tax burden" and upheld the tax authority's reassessment.

Massive Tax Savings Cases Emerge

The NTA documents reveal other shocking examples.

One wealthy individual borrowed ¥2.2 billion to purchase a rental building in Chiyoda Ward for ¥2.1 billion. Through inheritance, what should have been ¥1.23 billion in inheritance tax was reduced to ¥440 million, a "savings" of approximately ¥790 million.

In another case, a property purchased for ¥2.1 billion was reported at a statutory valuation of ¥420 million, reducing tax burden by approximately ¥790 million. The gap ratio exceeded four times the market price.

From Tower Mansions to Whole Buildings

The once-famous "tower mansion tax avoidance" scheme faced new valuation rules in 2024, raising valuations from roughly 40% to 60% of market price.

However, the NTA notes that "schemes utilizing rental properties, particularly whole-building rental apartments that fall outside the new regulations, continue to be observed." When tower mansion loopholes closed, the wealthy simply moved to the next "escape route."

Real estate fractional ownership products have also been flagged. These financial products that divide commercial buildings into small investment units have been used for tax avoidance through valuation gaps.

"5-Year Rule" Coming in 2026 Tax Reform

The government is set to address this issue comprehensively in the 2026 tax reform.

The key change targets rental properties acquired within 5 years before inheritance, valuing them at 80% of a figure based on acquisition price (adjusted for land-price movements) rather than the statutory road price. Applying to inheritances from January 1, 2027, it effectively ends "last-minute purchase" tax strategies.

While the NTA has applied individual assessments under General Rule 6 of Basic Property Valuation Guidelines for "clearly inappropriate" cases (only 27 cases, 13 real estate and 14 stocks, from 2016 to 2024), clear institutional rules will now apply.

Are Financial Institutions Complicit?

Behind this issue lurk financial institutions. The NTA points out that "successors who purchased rental properties through introductions from real estate companies and financial institutions for borrowing and sales now struggle with loan repayments."

Cases exist where people purchased expensive properties as advised for tax purposes, only to face deteriorating occupancy rates after inheritance, struggling even to pay property taxes.

The responsibility of financial institutions and consultants who sell "tax avoidance schemes" to the wealthy deserves scrutiny.

Wealth Redistribution vs. Economic Vitality

Inheritance tax is a crucial tool for wealth redistribution. If "excessive tax avoidance" through real estate continues, the system's fairness erodes.

However, real estate purchases for inheritance tax planning have driven capital into real estate markets, fueling development and construction. How regulatory tightening will affect real estate markets remains uncertain.

In Japan, scrutiny of wealthy tax avoidance is intense. Criticism that "only the rich benefit" is persistent, and many welcome the regulatory tightening. Yet voices argue "how you use earned money is your freedom" and "legal tax planning is a right."

What discussions exist in your country about wealthy tax strategies? Is using real estate for inheritance tax planning common? Share your thoughts in the comments!

References