Japan Plans Tax Deferral on Non-Core Business Divestiture Gains to Drive Corporate Restructuring

Nashnova编辑部
Published todayAbout 8 min read

Japan is weighing an indefinite deferral of roughly 30% corporate tax on proceeds from non-core divestitures, targeting the 65% of Japanese corporate capital stuck in businesses that cannot cover their cost of capital.

01

What exactly is the proposal?

If a company sells a non-core unit and reinvests the proceeds in acquisitions related to its core business within several years, roughly 30% of corporate income tax can be deferred indefinitely.
In plain terms = the government isn't cutting taxes — it's converting the tax bill into a conditional IOU. Reinvest in your core, and the bill stays on hold.
The proposal is expected to be filed as a tax-reform request by month-end; the final package will be settled with the next fiscal year's tax plan before year-end.
02

Why have Japanese companies been reluctant to divest?

A government study found that roughly 65% of invested capital across Japanese corporations sits in units that fail to earn back their cost of capital.
This means → most of the money is locked inside businesses that destroy value, offsetting the gains generated by stronger divisions.
The core bottleneck: selling triggers an immediate tax hit, making divestitures financially unattractive — so assets stay inside parent companies that are not the best operators for them.
Japan introduced spin-off tax rules in 2017 and a partial spin-off regime in 2023, yet completed divestitures remain rare. Beyond tax mechanics, Japanese corporate culture has traditionally prioritized maintaining group scale and safeguarding employment over reshaping portfolios.
03

What does the German precedent show?

In the early 2000s Germany broadly exempted corporate gains on equity disposals, effectively dismantling the dense web of cross-shareholdings among German firms.
This means → Germany proved that the tax burden is the critical lock holding cross-holdings and portfolio inertia in place — release the tax, and companies move.
Japan's proposal explicitly references the German model. The logic is the same: use a tax lever to unlock asset rotation.
04

What does this mean for the M&A market?

M&A involving Japanese companies in 2025 has already more than doubled year-on-year, hitting a record $353 billion; divestiture deals alone reached $44.7 billion.
This means → the market is already accelerating. If the reform passes, it adds another stage of thrust to a train that is already picking up speed.
Key variables remain open: how long the reinvestment window will be, what qualifies as "related to core business," and whether the package clears approval by year-end — these details will determine the policy's real leverage.

Content is for reference only, not financial advice.