Japan and the United States step in to support the yen
Statement from Tokyo: we will not hesitate to repeat this. Japan also plans to make use of the Federal Reserve’s ‘FIMA Repo Facility’ in future
Key points
Joint intervention by the United States and Japan in the foreign exchange market to support the value of the yen. The intervention, which is very rare, was confirmed today by Tokyo. Last Friday, ‘the Japanese Ministry of Finance purchased yen in coordination with the US Treasury Department.’
This joint action was taken in accordance with the joint statement by the finance ministers of Japan and the United States issued in September 2025, with the aim of countering the excessive volatility and disorderly movements of the yen observed in recent months,” said Japanese Finance Minister Satsuki Katayama in a statement.
The Japanese Ministry of Finance is keeping a close watch on the situation and remains in close contact with its counterparts at the US Treasury. “We will not hesitate to carry out further joint interventions.”
Japan also plans to make use of the Federal Reserve’s FIMA Repo Facility (Foreign and International Monetary Authorities Repo Facility) in the future.
Yen intervention: up to 37 billion euros spent
Intervention in the yen market, costing up to 37 billion euros. Against this backdrop of rising public spending, a few days ago the Japanese authorities intervened in the foreign exchange market, buying yen and selling dollars, after the Japanese currency had slipped to its weakest level in 39 years, reaching almost 164 to the US dollar. According to estimates based on data from the Bank of Japan (BoJ), the value of the operation is thought to be between 6,000 and 7,000 billion yen, equivalent to approximately 32–37 billion euros. This is the first direct intervention since the one carried out between April and May, when Tokyo spent a record 11,700 billion yen. Once again, the move had Washington’s backing: US Treasury Secretary Scott Bessent described the yen as ‘significantly undervalued’, noting that excessive volatility ‘is not healthy’ for the markets. Against this backdrop, overnight between Thursday and Friday, the Japanese currency hit 157.80 against the dollar in around 50 minutes, before weakening again in Asian trading. Finance Minister Satsuki Katayama did not confirm the intervention but assured that the authorities were exercising “the utmost vigilance”.

