When Japanese authorities conduct their next confirmed yen-buying foreign exchange intervention

My median prediction for the next confirmed Japanese yen-buying intervention is 26th November 2027, as depleted foreign exchange reserves and a shift toward monetary policy normalization through Bank of Japan rate hikes reduce the immediate necessity for direct market action.

After the yen plummeted to nearly 164 against the US dollar in late July 2026, Japan's Ministry of Finance (MOF) partnered with the US Treasury for a coordinated yen-buying intervention in early August 2026. Japanese Finance Minister Satsuki Katayama subsequently stated the government would "not hesitate conducting further coordinated intervention" to counter excessive volatility. With the Bank of Japan keeping policy rates unchanged, the burden of supporting the currency has largely fallen on direct market interventions.

This question resolves on the calendar date (in Tokyo time) that Japanese authorities (e.g., the Ministry of Finance or the Bank of Japan acting on its behalf) conduct a yen-buying foreign exchange intervention, provided the intervention occurs after August 8, 2026. The occurrence and specific date of the intervention must be officially confirmed by the Ministry of Finance, either through a real-time official statement or a subsequent official data release (such as the MOF's Foreign Exchange Intervention Operations records). If multiple days of intervention are confirmed, the first date counts.