Japan Core-Core CPI YoY in 2026

Japan's core-core CPI has demonstrated a clear easing trend in the first half of 2026, with the May nationwide reading falling to 1.8%, the softest level since September 2022, and the June forecast pointing to a further dip to 1.7%. These figures establish a low baseline for the year, meaning the second half must perform significantly above the 1.9% threshold to push the annual average higher. The Bank of Japan explicitly views this drop as evidence that underlying inflation pressure is easing rather than building, suggesting the current softness is not merely a temporary anomaly but a reflection of reduced demand-driven price pressures.

While analysts anticipate a renewed upward turn starting in summer 2026 due to the pass-through of upstream goods prices (CGPI), the magnitude of this increase remains uncertain and may not be sufficient to offset the weak first-half average. Forecasts for the broader 'core CPI' (excluding only fresh food) project year-end levels of 2.8%, but the 'core-core' metric (excluding both fresh food and energy) has been more volatile and consistently lower, with the nationwide figure lagging behind the Tokyo leading gauge. The Tokyo gauge hit 1.9% in April and June, but the nationwide data remains in the 1.7%–1.8% range, indicating that the pickup may be less pronounced nationally than in the capital.

The market currently prices the 'No' outcome (annual average > 1.9%) at 86.5%, implying a high probability that inflation will breach the threshold, yet this sentiment appears to overreact to the summer pickup narrative without fully accounting for the drag of the first half. To push the annual average above 1.9%, the core-core CPI would need to sustain levels of 2.0% or higher for several consecutive months in the second half, a scenario that contradicts the BOJ's assessment of easing underlying pressure. Given the current trajectory where monthly readings hover between 1.7% and 1.9%, the most probable outcome is that the annual average settles just at or slightly below the 1.9% mark.