Yen's weekly surge driven by BOJ rate hike expectations

The movement in USD/JPY, which dropped from close to 160 to below 156 within a week, signals a swift reassessment of Bank of Japan policy intentions rather than a broader trend in the US dollar. Markets now treat a September rate increase as nearly fully priced in. A more significant factor is the roughly 25% probability now assigned to a second consecutive hike as soon as October, which would represent a clear break from the BOJ's historical six-month cycle between moves. A quicker pace of BOJ tightening would also affect yen crosses more broadly, including AUD/JPY, where a narrowing interest rate differential and unwinding of yen-funded carry trades could exert downward pressure on that cross if the hawkish repricing continues.

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The yen recorded its strongest weekly performance in a month, driven by increasing market conviction in back-to-back BOJ rate hikes rather than a single increase.

Summary:

• USD/JPY dropped from near 160 to about 156 last week, marking one of the yen's largest weekly gains in months
• A Bloomberg report cited by Japanese brokerage analysts indicated the BOJ is expected to raise its policy rate by 25 basis points to 1.25% at the September meeting, reducing the likelihood of a larger 50-basis-point move
• Bank of Japan Policy Board member Hajime Takata previously noted that 2026 marks "a change in phase," suggesting the BOJ's typical six-month gap between rate increases may no longer apply and that "back-to-back rate hikes could result"
• Following Takata's remarks, the overnight index swap market priced the likelihood of a September rate hike at roughly 97%, with around a 25% probability of an additional increase as soon as October
• Analysts point out that Takata is considered one of the more hawkish Policy Board members, and his statements should not be interpreted as the BOJ leadership's unified position
• One brokerage maintains its forecast for rate increases to 1.25% in September and 1.50% in December, acknowledging a growing chance that the pace of tightening thereafter could be speedier than previously expected

The yen strengthened sharply last week, with USD/JPY falling from near 160 to around 156, as traders adjusted their expectations for not just one but potentially two BOJ rate hikes in quick succession. According to a research note from a Japanese brokerage, a Bloomberg report indicated the BOJ is likely to increase its policy rate by 25 basis points to 1.25% at its September meeting, while downplaying the possibility of a larger 50-basis-point rise.

The rally built on speculation initially sparked by BOJ Policy Board member Hajime Takata, who stated in a speech that 2026 marks "a change in phase and the beginning of a new regime," contending that the central bank's traditional practice of hiking roughly every six months may no longer suit the current environment. Takata said "back-to-back rate hikes could result" depending on circumstances, and that the BOJ should consider a wider array of options on hike size rather than defaulting to 25-basis-point increments.

After those remarks, the interest rate swap market assigned a roughly 97% probability to a September rate increase, while attaching around a 25% likelihood to an additional hike as soon as October, a genuine deviation from the BOJ's historical pattern. The yen's strengthening and a flattening of the Japanese government bond yield curve, as superlong yields declined, reflected market expectations of a BOJ moving to address a perceived position behind the curve.

Analysts caution against overinterpreting Takata's comments alone, as he is regarded as one of the more hawkish Policy Board members and his views do not necessarily represent the BOJ leadership's collective outlook. The latest reporting is viewed as consistent with a steady, rather than back-to-back, rate path in the near term, with one brokerage maintaining its forecast for hikes to 1.25% in September and 1.50% in December while now placing greater emphasis on the possibility that the pace of tightening beyond that point could prove quicker than previously anticipated.

Takata triggered yen rise.