Japan’s three largest banks—MUFG, Sumitomo Mitsui, and Mizuho—have collectively boosted their foreign currency liquidity buffers to $1.25 trillion as of August 9, 2026. This move is in anticipation of sudden demand for U.S. dollars amid ongoing tensions related to the conflict in Iran.

The increased liquidity buffers aim to strengthen the banks’ ability to manage foreign currency needs in a volatile geopolitical environment. The decision reflects concerns over potential disruptions in currency markets stemming from the Middle East situation.

These developments highlight the proactive measures taken by Japan’s financial institutions to safeguard stability in the region’s banking sector.

Sources