SEISEI INSIGHTS — Succession
Where Is Your "Domicile"? Residency, the Gift-Tax Obligation, and the Loophole the 2017 Reform Closed
2026-07-02
"If I move my domicile overseas, is a gift of foreign-situated assets free of Japanese gift tax?" From clients weighing how to transfer wealth across generations, we hear this question repeatedly. There is a famous case in which exactly this structure was litigated — and the government lost. Here we set out what was at issue, and what the later reform changed, as a matter of structure.
The Structure of the Case
Around the year 2000, a wealth holder gave his child a very large asset in the form of an equity interest in a Dutch corporation. The recipient's domicile was, at the time, registered in Hong Kong. Under the inheritance tax law as it then stood (before the 2017 reform), liability for gift tax turned on the recipient's "domicile"; if that domicile was outside Japan, there was room to read the gift of foreign-situated assets as falling outside Japanese gift tax.
The dispute came down to a single point: was the recipient's "domicile" in Japan or in Hong Kong? The tax authority argued that the "base of his life" was in Japan and that Japan could tax the gift.
"Domicile" Means the Base of One's Life
In Japanese law, "domicile" is defined by Article 22 of the Civil Code as "the base of a person's life." It is judged not by the address on one's resident registration, but by where the substance of one's life actually lies.
The Supreme Court held, in substance, that the determination of domicile must rest on the objective facts of a person's life, and that even where the motive is to reduce a tax burden, the legal finding of domicile itself is not negated by that motive (Supreme Court, judgment of 18 February 2011). This reasoning had a profound effect on tax practice at the time.
The government lost, and the gift tax that had been assessed (reported at approximately ¥133 billion) was refunded together with refund interest (reported at a total on the order of ¥200 billion).
What the 2017 Reform Closed
In response to this ruling, the regime itself was revised. The current inheritance tax law, Article 1-4, provides that where a person who acquires property by gift — such as a person holding Japanese nationality — "had a domicile in Japan at any time within the ten years preceding the gift," worldwide property is, in principle, subject to gift tax, even if that person was living abroad at the time of the gift.
In other words, simply moving one's domicile overseas can no longer place a gift of foreign-situated assets outside Japanese taxation where the person had a domicile in Japan until recently.
The Lesson: Regimes Move
| Point in time | State of the regime |
|---|---|
| Before reform | Where the recipient's domicile was abroad, a gift of foreign assets could fall outside gift tax |
| Now | If there was a domicile in Japan within the past 10 years, a gift of foreign assets is, in principle, taxable |
It is not unusual for a structure that once worked to be closed off by later legislation. Designing an intergenerational transfer on the assumption of the tax law at a single moment leaves the premise exposed to future change. Asset transfers should be examined with residency, the location of the assets, and the tax law in force at the relevant time considered together — and planned deliberately within the year.
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.