The Succession Gap and the Special Business-Succession Tax Regime: The Framework Around Japan's SMEs

"Why would a Japanese owner sell the company to a foreigner?" We hear this repeatedly from those weighing the acquisition or succession of a business in Japan. The answer is usually not "because they want to sell," but "because there is no one else to take over." Before it is any one owner's circumstance, it reflects the structural position of Japan's small and mid-sized enterprises.

The Structure Behind "No Successor"

According to estimates published by the Small and Medium Enterprise Agency, a substantial number of Japan's SMEs face an aging ownership on one side and an undecided successor on the other. When an owner reaches retirement with no one to hand the business to, the enterprise drifts toward closure even when it is profitable — and what is lost, including jobs, know-how, and customer relationships, is far from trivial. Against this backdrop, succession to a third party — including through M&A — has come to be treated, in policy and in practice, as a viable option.

The government has progressively built out support for business succession and hand-over: matching and advisory channels for third-party succession have expanded, and tax measures accompanying succession are in place. Succession or acquisition of an SME by a foreign principal is not excluded from this framework.

The "Special Measure" of the Business-Succession Tax Regime

The central mechanism in a succession is the business-succession tax regime. For a successor who acquires unlisted shares by gift or inheritance, the regime provides — subject to defined requirements — for a deferral of the gift or inheritance tax attributable to those shares.

The "special measure" in particular is designed to allow that deferral over a broader scope than the ordinary measure.

The point to note is that this special measure is time-limited. The gifts and inheritances eligible for it fall within a defined window, accompanied by procedural requirements such as filing a plan. Anyone considering succession therefore needs to keep the deadline in view and prepare on a planned, within-the-year basis. The regime is not something available "at any time"; it must be structured after confirming both the requirements and the timing.

Treat It as a Structural Question

In our experience, a succession or acquisition tends to begin with "finding a good company." Seen from the regime's side, the order of what to confirm is different.

• Can the shares in question meet the requirements of the succession tax regime? This governs whether deferral is available.
• Does the plan fit within the special measure's window? Timing shapes the outcome.
• Can the post-succession management structure keep meeting the requirements? This bears on maintaining the deferral.

The gap left by "no successor" is an opportunity for a principal — but one realized only when the regime's requirements are met. Starting from the structure of succession, rather than from a company's appeal, is the right starting point for anyone considering the succession or acquisition of a Japanese SME.

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.