BoJ Rate Hike Fails to Lift Yen as Policy Outlooks Remain Unclear
The Japanese yen weakened sharply after the Bank of Japan (BoJ) raised its benchmark interest rate but stopped short of offering clear guidance on further policy tightening, prompting profit-taking and a surge in the US Dollar against the yen.
On December 12, the BoJ delivered a rate increase in line with market expectations. Instead of supporting the currency, however, the move triggered a broad sell-off in the yen. The USD/JPY pair jumped more than 1%, climbing to around 157.40, the highest in a month. The yen also fell against the euro, the pound sterling, and several other major currencies.
The 25-basis-point hike, which lifted the policy rate from 0.50% to 0.75%, had been fully priced in by investors well ahead of the decision. As a result, the announcement sparked a classic buy the rumour, sell the fact reaction, leaving the Japanese currency under renewed pressure.
Yen losses accelerated following comments from BoJ Governor Kazuo Ueda during his post-meeting press conference. Ueda refrained from providing specific guidance on the timing or pace of additional rate increases next year, a cautious stance that disappointed market participants looking for a more assertive policy signal.
A similar tone was reflected in the official statement. The central bank maintained its projection that core inflation would only approach the 2% target by the end of the 2026 to 2027 fiscal year. Although they acknowledged that real interest rates remain very low, they emphasized that further tightening would only occur if economic and inflation conditions develop as expected.
Bart Wakabayashi from State Street Tokyo assessed that the market reaction reflects doubts about the BoJ's next steps. According to him, the Japanese central bank is not yet fully confident in continuing aggressive interest rate hikes. He added that the market views the range of 1% to 1.25% as a neutral interest rate level, although achieving this seems challenging for the BoJ.
The central bank’s cautious posture ran counter to expectations among some investors for a more hawkish signal. The absence of such guidance ultimately weighed further on the yen’s outlook.