Yen: BOJ September Risk Looms, USD/JPY Stays in Narrow Range – Scotiabank

USD/JPY is currently trading near 159.27692, maintaining a narrow-range consolidation pattern. Scotiabank strategists Shaun Osborne and Eric Theoret note that the pair has been relatively stable between 158.00 and the upper-159.00s recently, with the yen underperforming most G10 currencies. The bank sees resistance above 159.50 and support near 158.50, with the near-term breakout direction depending on clarity in policy catalysts.

**BoJ September Rate Hike Expectations Intensify**

The Bank of Japan's next policy meeting is scheduled for September 17-18, with market expectations for a policy rate adjustment steadily building. According to Bloomberg, analysts broadly interpret the BoJ's recent communications as its most hawkish stance to date, with Kazuo Ueda emphasizing that vigilance against upside price risks is "more necessary than ever," which nearly cements the case for a September hike. Scotiabank strategists also note that with policymakers considering a rate hike this autumn, the BoJ's outlook remains critical, with the near-term domestic risk being the second-quarter GDP data due early next week.

**Initial Contours of US-Japan Coordinated Action Emerge**

US verbal support for a stronger yen has added a new lever to Tokyo officials' defense efforts. According to Reuters, US Treasury Secretary Bessent has voiced support for a BoJ rate hike and plans to meet with BoJ Governor Ueda at the late-August G20 finance ministers' meeting. Some analysts suggest that coordinated US-Japan intervention is entering the first phase of building policy credibility; if subsequently paired with Japan pushing short-term market rates higher, USD/JPY could see a more sustained and accelerated depreciation. However, with the current US-Japan yield spread still exceeding 2.5 percentage points, a single rate hike is unlikely to reverse the long-term depreciation trend, leaving the yen's trajectory facing severe challenges.

**Asian Currency Linkage Effects Under Scrutiny**

A stronger yen would have spillover effects on other Asian currencies. Analysis from Citi and Barclays shows that the Korean won, Singapore dollar, and Thai baht stand to benefit the most, with the won viewed as the Asian currency most sensitive to yen moves. Citi strategists note that over the past year, the won, Singapore dollar, Taiwan dollar, and yen have shown the highest currency correlations, while the Indian rupee and Indonesian rupiah have the lowest. However, the Taiwan dollar has recently continued to depreciate, indicating that regional currency divergence persists.