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Tokyo core inflation jumps in September, bolsters case for more BOJ hikes

By Thomson Reuters Oct 1, 2026 | 6:44 PM

By Leika Kihara and Takahiko Wada

TOKYO, Oct 2 (Reuters) – Annual core inflation in Japan’s capital accelerated in September, data showed on ​Friday, highlighting mounting price pressures that ‌bolster the case for further interest rate hikes.

The data, which is considered a leading indicator of nationwide trends, will be among factors that affect the Bank of Japan’s ‌fresh ​quarterly inflation forecasts due ⁠at its next policy ⁠meeting on October 29-30.

The core consumer price index, which excludes fresh food but includes fuel costs, in Tokyo rose 2.7% in September from ​a year earlier, government data showed, accelerating from a 1.8% gain in August and ⁠exceeding a median market forecast ⁠for a 2.4% gain.

An index stripping ​away the effect of fresh food and fuel, ​which is closely watched by the BOJ as ‌a better gauge of trend inflation, rose 3.0% in September after a 2.0% gain in August.

While government fuel subsidies had kept core consumer ⁠inflation below the BOJ’s target, a recent spike in wholesale inflation has highlighted mounting price pressure from the ⁠Middle East ‌conflict, a weak yen and ⁠robust AI-related demand.

The BOJ raised interest ​rates to ‌a 31-year high last month, ​with its ⁠governor signalling the central bank has entered a new phase focused on preventing inflation from overshooting its target, opening the door to further rate hikes.

(Reporting by Leika Kihara and Takahiko Wada; Editing by ​Jacqueline Wong)