Bank of Japan Intervenes in FX Market to Support Yen Amid Energy Shock

The Bank of Japan intervened in the foreign exchange market to support the yen by buying it and selling dollars during the New York session on July 31, 2026. This move comes as the yen has been experiencing a sharp decline to multi-year lows, threatening to increase households' costs due to rising import costs linked to the energy shock caused by the war in Iran.

The intervention occurred ahead of the Bank of Japan's monetary policy decision on July 30-31, with market expectations suggesting that the central bank will keep interest rates at 1%. However, there is a possibility that the Bank of Japan may signal its willingness to continue raising borrowing costs, which could further impact import costs and overall inflation.

Analysts believe that the dollar reacted to the yen's moves, slipping to above 160 yen per dollar on Friday after a week of fluctuations amidst expectations about the bank's actions. The coordination with the United States may support a weaker dollar, but it also puts pressure on further steps by the Bank of Japan to raise rates.

Tori Suehiro, a leading economist at Daiwa Securities, said that 'we needed to respond carefully to signals from the Bank of Japan, and the intervention came sooner than expected.' The markets remain vigilant about Japanese authorities' actions as the weak yen already affects import costs and living standards in the country.