The Bank of Japan (BOJ) appears poised to increase its benchmark interest rate by 25 basis points at its September 17-18 policy meeting. This anticipated move comes as underlying inflation in Japan nears the BOJ's 2% target, prompting Governor Kazuo Ueda to indicate a greater focus on upside price risks in policy decisions. Ueda's recent comments after a G20 meeting in North Carolina, where he emphasized a risk-management approach as inflation approaches the target, have further fueled expectations of a rate hike. He noted that economic data broadly aligns with the BOJ's July outlook, suggesting no major change in the overall policy direction.

Market participants have largely priced in this rate increase, with overnight index swaps indicating a nearly 100% probability of a quarter-point hike. US Treasury Secretary Scott Bessent has publicly advocated for the BOJ to tighten its monetary policy, having met with Governor Ueda and expressed strong support for Japan's efforts to address the yen's undervaluation. Bessent's push for the BOJ to "stop the reflation" and end its easy-money policies adds external pressure on the central bank.

The yen has seen a recent rally, breaking ¥158 to the dollar for the first time in about three weeks, partly due to increased certainty around the rate hike. This rally followed comments from US and Japanese officials and came after the yen had recently hovered near ¥160.30 to the dollar. Japan's 10-year government bond yield, which had touched a three-decade high of 3%, has also pulled back slightly to around 2.97%. The potential for further tightening beyond a single September hike will be a key focus for investors, as the BOJ navigates both domestic inflation pressures and international calls for policy adjustments.