Japan’s Tokyo Core Consumer Price Index (CPI) rose 2.7% year-over-year in September 2026, accelerating from a 1.8% gain in August 2026, according to data updated on 1 October 2026.
The figure, which measures price changes in Tokyo excluding fresh food, is based on a year-over-year comparison: the September reading reflects the change versus September a year earlier, while the previous 1.8% figure was a comparison of August to the same month a year before. The pickup in Tokyo core inflation suggests a strengthening price trend in Japan’s capital, often viewed as an early indicator of nationwide price dynamics.
The latest data may draw increased attention from market participants monitoring Japan’s inflation trajectory, as the faster pace in core prices could influence expectations for broader economic conditions and future policy considerations.