Japan and the United States Intervene Jointly to Support the Yen for the First Time Since 2011

The coordinated dollar selling followed a sharp fall in the yen against the dollar, driven by the gap between Japanese and US interest rates.

Japan and the United States confirmed a joint intervention in currency markets to support the yen, the first such coordinated action since 2011, when Group of Seven members sold yen to stop it strengthening after a major earthquake. This time the goal was the opposite, to halt the yen's decline after it fell sharply against the dollar.

Japan's finance ministry said the operation "countered excessive volatility and disorderly movements" in the currency. Bank of Japan data suggested Tokyo may have sold nearly $59 billion of dollars to buy yen when it acted alone in New York before the confirmed joint intervention. Japanese finance minister Satsuki Katayama and US Treasury Secretary Scott Bessent both said they would not hesitate to intervene again.

The yen's weakness stems from the interest-rate gap between Japan and the United States, which drives the carry trade in which investors borrow cheaply in yen to buy higher-yielding assets, and from concern about Japan's very high public debt under new Prime Minister Sanae Takaichi. Opposition figures in Tokyo, reported by Jiji Press, argued that intervention addresses only the effect and urged the government to fix the underlying causes of the weak yen rather than rely on currency operations.

The episode illustrates a recurring tension in the fiat-money system. A country can defend its currency's exchange rate or run an independent monetary policy, but when the two conflict, defending the rate requires spending reserves that a determined market can eventually exhaust.

What this means

A weak yen imports inflation into Japan through costlier energy and food, while a defended yen forces Tokyo to sell dollar reserves, which can mean selling US Treasuries and adding upward pressure to American yields. Japanese exporters lose competitiveness if the yen strengthens, and carry-trade investors face losses if the currency reverses sharply. The intervention provides temporary relief, but it does not close the interest-rate gap that is the underlying cause.

What to watch

Whether the Bank of Japan moves to raise rates, because narrowing the gap with the United States would address the yen's weakness at its source rather than through reserve spending.
The size of any further intervention disclosed in monthly data, which shows how much of its reserves Tokyo is willing to commit before the market tests its resolve again.

Observations to monitor, not financial advice.

2 sources

Synthesized from: The Hindu · Jiji Press

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