Japan and U.S. Confirm Joint Currency Intervention to Support the Yen
The Facts
- Japan's Ministry of Finance confirmed on Monday, Aug. 3, that it bought yen on Friday, July 31, in coordination with the U.S. Treasury Department, in a statement from Finance Minister Satsuki Katayama.
- Katayama said the joint action was taken to counter "excessive volatility and disorderly movements" in the yen in recent months, and was carried out in accordance with a joint statement by the Japanese and U.S. finance ministers issued in September 2025.
- The yen fell to about 163.73 per dollar last Thursday — its weakest level in roughly 40 years, or since 1986 — before rebounding to about 157.57 on Friday.
- President Trump confirmed the U.S. role on Sunday while speaking to reporters aboard Air Force One, calling it a "sign of friendship" and saying the U.S. helped because it has a good relationship with Japan.
- Both governments said they would not hesitate to conduct further coordinated interventions; Bessent wrote on X that the Treasury remains in close contact with Japan's Finance Ministry and the Bank of Japan.
- The yen extended its gains on Monday, strengthening to about 155 per dollar — its highest level since early May — after rising roughly 3% over the two prior trading sessions.
- A stronger yen weighed on Japanese exporters' shares on Monday, with Toyota and Honda each falling more than 4% and Sony down 5%, while the Nikkei index dipped about 1%.
- Neither government disclosed the amount spent on the intervention; Reuters reported that Bessent was seen at a cabinet meeting with a notepad referring to buying $5 billion to $10 billion of yen.
- Officials and analysts link the yen's weakness to Japan's much lower central bank interest rates relative to other major economies, alongside investor concern over government spending and higher energy costs.
Context
When did the U.S. and Japan last intervene together in currency markets?
Accounts differ on the comparison point because the direction of past interventions differed. The BBC describes this as the first joint intervention since 2011, when the two countries acted together to weaken the yen after the earthquake and tsunami in eastern Japan BBC. CNBC frames it as the first U.S.-Japan joint operation to buy yen since 1998, with the 2011 action being a G7 effort to push the currency down CNBC. Reuters described it as the first joint intervention in 15 years Investing.com.
Why would Washington help strengthen another country's currency?
Trump said the U.S. acted as a gesture toward an ally and would derive financial benefit from the move, which he also called good for the global economy T-online.de Le Figaro.fr. Reporting points to broader stakes: the BBC says both countries want to prevent a sell-off in the yen and Japanese government bonds from affecting the global economy, including pushing up U.S. borrowing costs BBC. CNBC reports analysts have pointed to concerns over the U.S. Treasury market and Japan's financial system CNBC. Bessent has also said Japan is acting to correct what he called substantial undervaluation of the yen elEconomista.es.
Who is affected inside Japan, and is the intervention expected to work?
Japan relies on imports for energy and food, so a weak yen raises costs for businesses and consumers, and Prime Minister Sanae Takaichi has faced political pressure over spending as the currency slid Guardian. Conversely, a stronger yen cuts into exporters' earnings, and automaker and electronics shares fell on Monday Investing.com. Market commentary cautions that intervention may buy time rather than create a durable turnaround in the yen, while noting that direct U.S. participation strengthens the signal to traders Investing.com Investing.com.
Where Left and Right agree, and where they split
- Where Left and Right agree
- A joint intervention was committed with no disclosed figure and an open-ended pledge to repeat it — both framings treat that missing accounting as a real problem, not a technicality.
- Where Left and Right split
- Public money moving on stated policy versus presidential goodwill, or American capacity being pledged indefinitely to a currency Tokyo sits closest to.
How left and right read it
Neither government has disclosed what the intervention cost; the only figure in public view came from a notepad seen at a cabinet meeting, referring to $5 billion to $10 billion in yen purchases. Japan's finance minister grounded the action in a joint statement from September 2025. Trump called it a sign of friendship. Public money should move on stated policy with the sum disclosed, not on personal goodwill.
“The US has bought up yen to strengthen the currency for the first time in almost 30 years, with the moves raising questions about America's motives” — The Guardian
Japan's Finance Ministry bought yen on July 31 with the U.S. Treasury coordinating, after the currency hit a roughly 40-year low. Both governments now pledge not to hesitate to do it again — an open-ended commitment of American capacity to a currency Japan's own ministry and central bank sit closest to. The yen rebounded to 155. Japanese exporters took the hit. Whose balance sheet carries the next round?
The receipts — all 94 sources
Wire services (13)
Independent coverage (50)
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