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Japan Signals Possible Yen Intervention as Currency Weakens Despite BOJ Rate Hike

Japan Signals Possible Yen Intervention as Currency Weakens Despite BOJ Rate Hike. Source: Lenny K Photography from Sydney, Australia, CC BY 2.0, via Wikimedia Commons

Japan’s top currency officials have stepped up verbal warnings against sharp movements in the yen, raising market expectations of potential government intervention after the Japanese currency weakened following the Bank of Japan’s latest policy decision. Atsushi Mimura, Japan’s vice finance minister for international affairs and the country’s top currency diplomat, said authorities are prepared to take “appropriate action” if exchange-rate moves become excessive, highlighting growing concern over the yen’s recent decline.

Speaking to reporters on Monday, Mimura said recent foreign exchange movements had been “one-sided and sharp,” adding that the government was closely monitoring market developments. His comments reinforced earlier remarks made by Finance Minister Satsuki Katayama, who said late last week that Tokyo would respond appropriately to excessive and speculative currency moves. Together, the statements underscore Japan’s heightened sensitivity to yen weakness, which raises import costs and adds pressure to households already struggling with higher living expenses.

The warnings came shortly after the Bank of Japan raised its benchmark interest rate to 0.75% from 0.5%, marking the highest borrowing costs in roughly three decades. The rate hike was widely seen as a step toward policy normalization and a move that should, in theory, support the yen by narrowing the interest rate gap between Japan and the United States.

However, the yen continued to weaken after the BOJ meeting. The U.S. dollar climbed as high as 157.67 yen on Friday, its strongest level in four weeks. Market participants appeared to focus less on the rate increase itself and more on comments from BOJ Governor Kazuo Ueda, who offered limited guidance on the timing and pace of future interest rate hikes. The lack of clear forward guidance dampened expectations for further tightening in the near term, weighing on the Japanese currency.

Japan has a long history of intervening in currency markets during periods of extreme volatility, particularly when yen weakness threatens economic stability. While officials have not confirmed any immediate plans to step into the market, the latest comments suggest Tokyo is keeping all options open as it seeks to curb excessive exchange-rate fluctuations and stabilize the yen.

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