US, Japan Join Forces to Calm the Yen’s Slide

Sun Sep 06 2026 07:11:22 GMT+0000 (Coordinated Universal Time)

Washington and Tokyo's coordinated action halts the yen’s breach to a 40‑year low.

In a rare joint intervention, the United States and Japan stepped in last week to stop a sharp fall in the yen, marking the first coordinated effort since 2011. The combined move involved large-scale purchases of yen in the New York and Washington markets, with Japan trading up to about $59 billion worth of dollars and the U.S. rumored to buy between $5 and 10 billion. Analysts say this signals a willingness to keep the currency stable, offset speculation and potentially curb rising borrowing costs worldwide, especially in the U.S. economy. The Forex market welcomed the intervention, easing volatility and earning praise from officials in both countries. Experts predict future joint actions may continue if volatility spikes again.

In a coordinated move, the US and Japan stepped in to support the yen

When the Japanese yen slipped past a 40‑year low against the U.S. dollar, Washington and Tokyo decided to intervene together. It was the first time the two economies have coordinated in the foreign‑exchange market since 2011, when they helped dilute the yen after the March earthquake and tsunami.

Japan’s Ministry of Finance cited the action as a way to “counter excessive volatility and disorderly movements” in the yen, while U.S. Treasury Secretary Scott Bessent said the U.S. was ready to step in if it protects American interests. Bessent’s cabinet note listed a target of buying the yen for $5‑10 billion.

Bank of Japan data point to about $59 billion worth of dollars being swapped for yen in the New York market on Thursday, followed by the joint intervention with Washington on Friday. The coordinated effort is expected to deter speculators and keep the market calm.

The yen’s weakness is largely due to Japan’s low interest rates, which now sit at 1 % compared with the U.S. Federal Reserve’s 3.5‑3.75 % range. Economic challenges such as a shrinking working‑age population, low productivity and high energy imports keep the currency vulnerable.

The joint action graded the U.S. and Japan as “intermittently in a coordinated manner for some time.” The move also signals that both governments will keep an eye on future volatility, and that the yen will continue to be a key factor for global buying costs. The dollar traded close to 157 yen after the intervention, moving away from the 40‑year high of 164 yen last month.

The coordinated move shows the strong linkage between the two economies and highlights how important currency stability is for global markets. 78.