Yen Strengthens as Tokyo Core CPI Inflation Boosts BOJ Rate Hike Prospects

USD/JPY retreated to around 159.30 in early Asian trading on Friday, as Tokyo Consumer Price Index (CPI) inflation data reinforced market expectations for a Bank of Japan rate hike in September, with the yen firming against the dollar. At the time of writing, USD/JPY was trading at 159.36617, still within its recent trading range.

**Tokyo Inflation Data Strengthens Rate Hike Expectations**

As a leading indicator for nationwide inflation, the rebound in Tokyo's CPI directly boosted market bets on further monetary policy tightening by the BOJ in the near term. Market signals showed that the performance of Tokyo's core inflation data raised the likelihood of a September rate hike, consistent with the BOJ's gradual exit from ultra-loose policy. The yen found support amid heightened rate hike expectations, with USD/JPY pulling back from earlier highs.

**Yen's Trajectory Still Constrained by Multiple Factors**

Despite rate hike expectations providing short-term support for the yen, uncertainty remains over whether the yen's overall weakness can be reversed. According to market analysis, the BOJ's scope for rate hikes is relatively limited, while the US-Japan yield differential remains wide, capping the yen's sustained rebound momentum. With USD/JPY trading near 159.36617, the pair remains some distance from key psychological levels, and market sentiment leans cautious.

**Focus Shifts to Central Bank Policy Signals**

Going forward, market attention will turn to public comments from BOJ officials and subsequent economic data. If the inflation rebound trend is confirmed, rate hike expectations could further build, providing additional support for the yen; conversely, dovish signals from the central bank could prompt the yen to give back gains. According to analysis from VT Markets, Japan's inflation rebound resonates with the European Central Bank's tightening outlook, but volatility in yen crosses still needs to be assessed in conjunction with global risk sentiment.