SEISEI INSIGHTS — Family Wealth
Earn, Hold, Pass On, Leave: Japan's Four Tax Moments Across the Wealth Lifecycle
2026-06-19
"I've finally found my footing in Japan — now I just build quietly." We hear this often from foreign entrepreneurs and professionals living here. Yet when you lay Japan's tax system out as a single map, a pattern emerges: each stage of building wealth has its own tax waiting. When you earn as an individual, when you earn through a company, when you pass wealth to the next generation, and when you leave Japan. This article sets out the framework for each of these four moments as a matter of structure.
Four Moments, Four Taxes
| Moment | Tax | Statutory basis | Rate framework |
|---|---|---|---|
| Earning as an individual | Income tax | Income Tax Act, Art. 89 | Progressive, up to 45% (≈55% with 10% resident tax) |
| Earning through a company | Corporate tax | Corporation Tax Act, Art. 66 | 23.2% basic; 19% on first ¥8M for SMEs |
| Passing to the next generation | Inheritance tax | Inheritance Tax Act, Art. 16 | Progressive, up to 55% |
| Leaving Japan | Exit tax | Income Tax Act, Art. 60-2 | Unrealized gains taxed as a "deemed sale" |
The First Moment: Progressive Tax on Personal Income
Article 89 of the Income Tax Act sets out a bracketed progressive structure, dividing taxable income into bands and applying a rate to each. The top rate is 45%, on the portion exceeding ¥40 million. Add resident tax (a standard 10%) and the marginal rate in the upper band effectively approaches 55%. The more income accumulates, the smaller the take-home share of each additional yen earned.
The Second Moment: Income Earned Through a Company
The same business income is taxed under a different structure when a company is the earning entity. Article 66(1) of the Corporation Tax Act sets the basic rate for ordinary corporations at 23.2%, and Article 66(2) applies 19% to the first ¥8 million of income for SMEs with stated capital of ¥100 million or less. Separately, a time-limited relief measure (under special taxation measures) applies 15% to that first ¥8 million for certain SMEs — note that this is not part of Article 66 itself. The gap between an individual's progressive structure and a corporation's flat structure is the starting point of the "incorporation" question. One caveat: profits retained inside the company become subject to income tax again when the individual draws them out.
The Third Moment: Transfer Across Generations
Article 16 of the Inheritance Tax Act provides the rate table for computing total inheritance tax, applying progressive rates from 10% up to 55% (on the portion above ¥600 million) by band of acquired value. Wealth formed after income tax is taxed once more on transfer to the next generation — a two-stage structure.
The Fourth Moment: When You Leave Japan
Easily overlooked is the exit tax under Article 60-2 of the Income Tax Act. Where a resident holds securities and similar assets totaling at least a set threshold (¥100 million) and has had a domicile in Japan for more than 5 years within the 10 years before departure, leaving Japan is treated as a "deemed sale" of those assets at the time of departure. In other words, unrealized gains on assets you have not sold become taxable on the mere fact of leaving. Income from the deemed sale is subject to separate self-assessed taxation, at the same rate as gains on shares (15% at the national level). Article 137-2 of the Income Tax Act permits deferral of this tax until five years from the date of departure, provided requirements such as appointing a tax agent are met (security must be posted).
Treat It as a Structure
These four taxes do not exist in isolation; each corresponds to a stage of the wealth lifecycle — earn, hold, pass on, leave. What matters is knowing which moment you are in and which one comes next. Mapping your residency category, the type and location of your assets, and your anticipated future moves onto a single structural diagram is the starting point of long-term wealth design. Because some regimes carry annual deadlines, the relevant steps should be planned 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.