Will the Yen's Slide Force the BOJ's Hand? Market Bets on BOJ Rate Hike Before October with Over 70% Probability

Bloomberg reported on Wednesday (22nd), citing informed sources, that as the Japanese yen continues to weaken, heightening inflationary pressures, officials at the Bank of Japan (BOJ) are not ruling out accelerating the pace of rate hikes, potentially sooner than most economists anticipate.

The market widely expects the BOJ to hold policy steady at its July 31st meeting. The central bank raised its benchmark interest rate to 1% last month, the highest level in 31 years. Most observers had previously expected the next hike to occur in December.

Sources indicated that while BOJ officials understand the market's perception of a roughly six-month hiking cycle, there is no preset internal roadmap. Officials remain open to acting earlier if economic and price conditions warrant.

With core inflation finally approaching the BOJ's 2% target—set over 13 years ago—officials believe it is particularly important to carefully assess the risk of further inflationary acceleration. Some officials also believe the policy mandate is gradually shifting from pushing prices higher to ensuring inflation remains stably near the target.

On Wednesday, the yen briefly strengthened to 162.69 per dollar, up from an earlier 163.13. Meanwhile, the yield on two-year Japanese government bonds rose to its highest since 1995, and five-year yields climbed to 1.995%. The yen had previously fallen to around a 40-year low, prompting the Japanese government to issue renewed warnings of possible intervention.

BOJ officials continue to emphasize that monetary policy is not aimed at targeting a specific exchange rate level, but the impact of yen depreciation on prices warrants close attention. Junpei Tanaka, Head of Japan Investment Strategy at Pictet Asset Management, said markets are increasingly concerned about expansionary fiscal policy, and foreign exchange intervention alone may have limited effectiveness in halting the yen's decline.

Following the escalation of tensions in Iran, corporate pricing behavior has shifted, with Japanese firms passing on costs to consumers more quickly—indicating inflation is becoming more entrenched. Further yen weakness could prompt additional price hikes, giving the BOJ more reason to accelerate rate increases.

Market expectations for rate hikes are now outpacing economists' forecasts. Overnight index swaps indicate a roughly 72% probability of another BOJ rate hike before October, suggesting investors are already pricing in the possibility of action before December.