Top Japanese Executive Warns: Unlimited U.S. Investment Will Drain Japan's Domestic Capital
N.R. Finch
Yoshimitsu Kobayashi, chair of the Japan Productivity Center, openly questioned the sustainability of a $550 billion U.S.-bound investment fund — warning that endless capital outflows will hollow out domestic investment. He is the most senior Japanese business figure to challenge the fund so far.
Where did this $550 billion fund come from?
Last year, under tariff threats from the Trump administration, Japan was pressured into pledging a $550 billion investment fund directed at the U.S.
The fund is backed by the Japan Bank for International Cooperation (JBIC) and three major commercial banks, with guarantees from Nexi, the government export-finance agency. The money flows into U.S. infrastructure projects.
In plain terms = Japan did not choose this investment — it was extracted under the threat of tariffs.
How are the profits split — and why is the structure lopsided?
Before Japan recoups its principal, profits are split 50/50. After that, the U.S. side takes 90%.
The Trump administration holds final say over which projects receive funding — Japan supplies the capital but does not pick where it goes.
This means → Japan bears the bulk of the financial risk, yet the lion's share of returns flows to the U.S., and project selection is out of Japanese hands.
Why is Kobayashi speaking up now?
Kobayashi chairs the Japan Productivity Center, which has long identified weak domestic investment as the root cause of Japan's bottom-of-G7 labor productivity.
Japan's hourly output is just $53 (PPP-adjusted), far below the G7 average of $75. Prime Minister Sanae Takaichi has set a target of raising productivity 15% within five years.
This reflects a fundamental contradiction: Japan urgently needs capital at home to lift productivity, yet money is being funneled abroad on a massive scale.
What implicit ceiling did he set on the fund?
Kobayashi stated that JBIC and the three banks will each continue investing "to a certain extent" — roughly ¥5–10 trillion (about $31–62 billion) — but "this cannot go on indefinitely."
He hinted that U.S. political direction may shift: "It is hard to say whether the Republicans will keep following the Trump line."
In plain terms = he sees a cap on how much Japan will pay, and believes the mechanism itself may dissolve if American politics change course.
What is Japan's deeper structural problem?
Economist Richard Katz argues the real productivity drag is misallocation of capital — labor and investment should flow from underperforming sectors to growth sectors, but that mechanism has long been broken in Japan.
Two tranches of projects totaling up to $109 billion have been announced so far, covering nuclear and gas power plants. Tokyo remains under pressure to keep announcing new deals to satisfy Trump — without locking lenders into unviable projects.
This means → with the domestic reallocation mechanism still broken, locking large pools of capital overseas shrinks the room for domestic reform even further — and that is the core of Kobayashi's warning.
Content is for reference only, not financial advice.