Japan Fires Yen Bazooka Twice as Markets Test Tokyo’s Resolve

Japan’s Ministry of Finance appears to have conducted two separate Japan yen intervention operations in quick succession, CNBC reported Thursday, as Tokyo battles persistent pressure on its currency stemming from wide interest rate differentials with the United States.

First Strike Came During Golden Week Holiday

The first suspected operation landed on April 30, after the yen slipped past the politically sensitive 160-per-dollar threshold. That marked Tokyo’s first currency-buying move since July 2024. The yen subsequently rallied by as much as 3% on the day. A second suspected intervention then followed on Wednesday. The yen climbed from roughly 157.87 to as strong as 155.02 per dollar, a near 2% advance in a single session. Reuters estimated Japan may have deployed around 5.48 trillion yen, or approximately $35 billion, during the April 30 operation alone.

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Why the Yen Keeps Weakening

Japan’s structural challenge is straightforward. The Bank of Japan has kept borrowing costs far below those of the Federal Reserve. That gap pulls capital toward higher-yielding dollar assets and away from the yen. A softer yen is a double-edged pressure for Japan. It squeezes exporters’ competitiveness when it strengthens, but a prolonged slide raises import costs for energy, food, and raw materials that Japan depends on heavily. Authorities have repeatedly warned against what they call speculative and one-sided currency moves before acting.

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How Much Firepower Does Tokyo Actually Have?

Japan held roughly $1.16 trillion in foreign exchange reserves at the end of March. At the reported pace of roughly $34 to $35 billion per intervention, Francis Tan of Indosuez Wealth Management told CNBC that Tokyo could theoretically intervene around 32 more times. However, IMF classification rules present a harder constraint. Japan can conduct only two additional interventions through November before risking its status as a freely floating exchange rate regime. More frequent action could also attract heightened scrutiny from trading partners.

IMF Limits and US Talks Add Pressure

Japan’s top currency official, Atsushi Mimura, pushed back Thursday on the idea that IMF designations restrict how often authorities may act. Meanwhile, a meeting between US Treasury Secretary Scott Bessent and his Japanese counterpart is reportedly expected next week, with currency matters likely on the agenda. Analysts nonetheless caution that intervention without domestic monetary policy adjustment remains a temporary fix at best, burning through reserves without addressing the root cause.

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