Washington and Tokyo reaffirm that the yen is too weak

Japan said Trump voiced concern over the weak yen in his summit with Prime Minister Takaichi^1,7. The currency had continued to weaken after both the Federal Reserve and the Bank of Japan raised interest rates last week⁷.

Finance Minister Satsuki Katayama then held a virtual meeting on Friday with Treasury Secretary Scott Bessent, supplementing the leaders’ discussion³. The two reaffirmed their concern about the weak yen, and Bessent said the desirability of a strong yen reflecting Japan’s fundamentals was discussed^1,2,5. Katayama said the pair reaffirmed that the yen’s undervaluation is problematic⁴.

Katayama also tied the exchange to an earlier action, saying the call reaffirmed the shared United States and Japan stance behind July’s joint intervention, and that she and Bessent would keep communicating⁶. The currency responded: the yen headed for its best day in two weeks after the jawboning⁸, and the dollar fell as oil eased and the yen rallied on the Japanese remarks⁶.

Why it matters to investors

Two finance ministries publicly agreeing that a currency is undervalued⁴ is a different signal from unilateral verbal intervention. It revives the coordination framework that produced July’s joint action⁶, which is the reference point traders use to judge how far officials are willing to go.

The link runs through rates as much as through the currency desk. Both central banks tightened last week and the yen still weakened⁷, which is the problem officials are trying to address, and uncertainty about how quickly the Bank of Japan can keep tightening has itself weighed on the currency⁸.

For dollar-based investors, the sequence puts the yen inside the American policy conversation rather than outside it, with the Treasury secretary speaking to the desirability of a stronger yen grounded in Japan’s fundamentals^1,2.

What to watch

The first item is whether the language escalates from desirability⁵ to a warning about disorderly moves, the step that historically precedes action.

The second is the Bank of Japan’s pace. The market’s doubt about how fast it can continue tightening is already cited as a drag on the yen⁸, and official statements about currency levels do not resolve that.

The third is durability. The rally came on remarks rather than on flows^6,8, so the test is whether the move survives the next session without further comment from either ministry.