Japan Core Inflation Slows to 2% in January, Clouding BOJ Rate Hike Outlook

Japan’s annual core consumer inflation slowed to 2.0% in January, marking its weakest pace in two years and adding complexity to the Bank of Japan’s next interest rate decision. The latest government data showed that the core consumer price index (CPI), which excludes volatile fresh food prices, rose 2.0% year-on-year, down from a 2.4% increase in December and in line with market expectations.

The moderation in Japan’s inflation rate suggests easing cost-push pressures that had previously driven consumer prices higher. Analysts note that the slowdown largely reflects base effects from last year’s sharp price increases. The data aligns with the Bank of Japan’s forecast that core inflation would temporarily dip below its 2% inflation target before stabilizing.

A separate inflation gauge closely monitored by the BOJ, which excludes both fresh food and energy prices to better capture demand-driven inflation, climbed 2.6% in January. Although still above the central bank’s target, this measure eased from December’s 2.9% rise and marked the slowest annual increase since February 2025. The decline indicates that underlying price momentum may be softening, potentially influencing the BOJ’s monetary policy stance.

The Bank of Japan ended its decade-long ultra-loose monetary stimulus in 2024 and has since gradually tightened policy. In December, the central bank raised its key interest rate to 0.75%, signaling confidence that Japan was making sustained progress toward achieving stable 2% inflation.

However, the recent cooling in Japan’s core CPI could complicate the timing of further rate hikes. According to a Reuters poll, a majority of economists expect the BOJ to increase its benchmark interest rate to 1% by the end of June. Investors will closely monitor upcoming inflation data and economic indicators to gauge whether the central bank proceeds with additional tightening in the coming months.