• USD/JPY advances to a one-month high, surpassing the key 160.00 level.
• The US Dollar remains supported as markets await the Fed’s policy decision.
• Japanese authorities maintain intervention threats in response to persistent JPY weakness.

USD/JPY trades higher on Wednesday around 160.25, up 0.40% on the day and reaching a one-month high, close to the March 30 peak at 160.46. The pair is now approaching a highly sensitive level for Japanese authorities, with 160.00 widely seen as a red line that could trigger intervention in the foreign exchange market.

The upward move is primarily supported by the resilience of the US Dollar (USD), as markets remain cautious ahead of the Federal Reserve (Fed) monetary policy decision. Investors broadly expect a status quo on interest rates within the 3.5%-3.75% range, keeping the Greenback firm against its major peers. Attention now turns to Chair Jerome Powell’s communication, as his remarks could shape interest rate expectations in an environment marked by geopolitical tensions and elevated energy prices.

Political uncertainty surrounding the Fed leadership transition is adding another layer of caution. With Jerome Powell’s term set to expire in May, the potential appointment of Kevin Warsh is fueling speculation, though it has not yet altered expectations of a prolonged restrictive monetary stance.

On the Japanese side, the Bank of Japan (BoJ) recently left its policy rate unchanged while reaffirming its commitment to gradual monetary tightening. However, the impact on the Japanese Yen (JPY) remains limited due to the still-wide rate differential with the United States, which continues to favor carry trade strategies, weighing on the Japanese currency.

Meanwhile, Japanese authorities are stepping up their vigilance. Finance Minister Katsunobu Kato recently warned of possible decisive action against speculative moves, suggesting that coordinated intervention could be considered if volatility intensifies. This stance is helping to partially cap USD/JPY gains while maintaining underlying tension around the 160.00 level.

OCBC analysts also highlight this intervention risk, noting that any sustained move above 160.00 could prompt action from the Ministry of Finance to stabilize the currency, especially as rising energy prices and JPY weakness continue to weigh on the Japanese economy.