Story perspectives

Yen at 40-Year Low; BOJ Raises Rates, MoF Prepares Defense

6/20/2026

Summary

Japan Defends Yen

On June 19 the yen hovered at ¥161.12 per dollar, its weakest level in four decades, spurring market watch for Ministry of Finance action.
The Bank of Japan lifted its policy rate to 1.0%, the highest since 1995, without moving the yen from its low.
Analysts project the Ministry of Finance will defend ¥161.95 by deploying about ¥11.7 trillion, roughly 11-12% of reserves.

Summary

Japan Funds Yen

Japan funded its ¥11.73 trillion ($72.8 billion) yen-support operation by selling foreign securities, including U.S. Treasury bonds, drawing Washington scrutiny.
At the G7 summit in France, leaders reaffirmed exchange-rate commitments after Finance Minister Satsuki Katayama pledged action against speculation.
The war in Iran has lifted oil prices, adding imported-inflation pressure to Japan already strained by a weak yen.
Strategist Shogo Karitani warned that reduced liquidity may amplify yen moves.

Summary

Ueda Signals Hike

BOJ Governor Kazuo Ueda signaled a near-term rate hike, reigniting debate over monetary tightening.
Finance Minister Satsuki Katayama issued repeated decisive-action warnings, which analysts say strip surprise from interventions and make relief short-lived.
State Street Investment Management’s Masahiko Loo called the rate increase a “Band-Aid on a bullet wound” for the yen.
The yen rose to 156.6 on April 30 before falling quickly, fueling speculation of a hidden Golden Week intervention.

History

Historical Context

In 1998, amid Japan’s deflationary “Lost Decades,” the Ministry of Finance mobilized foreign reserves while the Bank of Japan acted to curb inflation, a move that temporarily steadied the yen, which had slipped to around ¥147 per dollar. Today’s yen weakness revives that same intervention-rate mix in the foreign-exchange market.

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Japan Defends Yen

On June 19 the yen hovered at ¥161.12 per dollar, its weakest level in four decades, spurring market watch for Ministry of Finance action.
The Bank of Japan lifted its policy rate to 1.0%, the highest since 1995, without moving the yen from its low.
Analysts project the Ministry of Finance will defend ¥161.95 by deploying about ¥11.7 trillion, roughly 11-12% of reserves.

1 / 4