Key facts
- The Japanese yen weakened past 160 per dollar for the first time since late July.
- Federal Reserve Chair Kevin Warsh indicated a willingness to raise interest rates.
- Japan has spent approximately $96 billion on currency interventions in 2026.
- The interest rate gap between the U.S. and Japan is a primary driver of yen weakness.
- A coordinated intervention between Japan and the U.S. occurred around July 31 and August 1.
The Japanese yen weakened past 160 per dollar on Friday, a level not seen since a joint currency intervention by Japan and the U.S. in late July. This decline was fueled by expectations of further interest rate hikes from the Federal Reserve, following comments from Fed Chair Kevin Warsh. The widening interest rate differential between the U.S. and Japan continues to put downward pressure on the yen as global investors seek higher returns on dollar-denominated assets.
Japan has undertaken aggressive measures to defend its currency, spending an estimated $96 billion on interventions in 2026. This includes a record single-month intervention of 11.7 trillion yen (approximately $73 billion) in April-May and a subsequent operation on July 30 estimated at around $53 billion. A single-day intervention on April 30 alone exceeded 6.2 trillion yen, or about $40 billion.
A coordinated intervention between Japan and the U.S. occurred around July 31 and August 1, the first such joint operation in decades. Despite these efforts, the yen has recently tested levels near 164 per dollar, suggesting that the intervention ceiling is gradually being pushed higher.
A weaker yen benefits Japanese exporters like Toyota and Sony by inflating their reported profits when foreign earnings are translated back into yen. However, it also increases the cost of imports, such as oil and natural gas, which are priced in dollars, thereby contributing to inflation and straining household budgets. The Bank of Japan's monetary policy stance is seen as a critical variable; a move towards higher interest rates could stabilize the yen, while maintaining loose policy may necessitate further large-scale interventions.