Tokyo inflation firmed in August, adding fresh support to case for another BoJ rate hike as soon as September. Headline CPI rose from 1.8% to 1.9% y/y, CPI excluding fresh food increased from 1.7% to 1.8%, while Core-Core CPI excluding fresh food and energy accelerated more clearly from 1.8% to 2.0%. That underlying measure now sits directly at BoJ’s 2% target, even as seasonally adjusted monthly headline inflation slowed from 0.4% to 0.2% and ex-fresh-food CPI from 0.3% to 0.1%.
Composition still points to persistent domestic price pressure. Food prices rose 3.9% y/y, with fresh food up 5.6% and food excluding fresh items up 3.6%. Eating out increased 5.0%, while housing rose 1.9% and transport and communications 2.8%. At same time, fuel, light and water costs fell 1.6%, helping keep headline inflation below Core-Core. That divergence reinforces view that underlying inflation is firmer than headline alone suggests.
Timing is particularly important after BoJ Deputy Governor Ryozo Himino said Thursday that underlying inflation was “approaching 2 percent” and reiterated that Bank should continue raising rates in a timely manner. Tokyo Core-Core has now reached that threshold, strengthening September hike case ahead of Sept. 17–18 meeting. Softer monthly headline momentum argues against calling August an inflation breakout, but annual underlying pressure is moving in direction BoJ has been waiting for, leaving little room for a clearly dovish interpretation.
Data Summary
| Tokyo CPI Measure | Previous | Latest |
|---|---|---|
| Headline CPI y/y | 1.8% | 1.9% |
| CPI ex Fresh Food y/y | 1.7% | 1.8% |
| Core-Core CPI ex Fresh Food & Energy y/y | 1.8% | 2.0% |
| Headline CPI m/m, SA | +0.4% | +0.2% |
| CPI ex Fresh Food m/m, SA | +0.3% | +0.1% |
| Core-Core CPI m/m, SA | +0.3% | +0.3% |
| Food CPI y/y | — | 3.9% |
| Fresh Food y/y | — | 5.6% |
| Food ex Fresh Items y/y | — | 3.6% |
| Fuel, Light & Water y/y | — | -1.6% |
Key Takeaways
- Tokyo Headline CPI rose from 1.8% to 1.9% y/y in August, while CPI excluding fresh food increased from 1.7% to 1.8%.
- Core-Core CPI excluding fresh food and energy accelerated more clearly from 1.8% to 2.0%, reaching BoJ’s inflation target.
- Food remained a major source of pressure, with prices up 3.9% y/y, including fresh food at 5.6% and food excluding fresh items at 3.6%.
- Energy continued to suppress headline inflation, with fuel, light and water prices down 1.6% y/y.
- Monthly momentum was less aggressive: headline CPI slowed from 0.4% to 0.2% m/m, while ex-fresh-food CPI eased from 0.3% to 0.1%.
- Core-Core monthly inflation held at 0.3%, suggesting underlying pressure remained firm even without a fresh sequential acceleration.
- Data strengthen case for a September BoJ hike, particularly after Deputy Governor Himino said underlying inflation was “approaching 2 percent.”
- Report supports tighter policy without amounting to an outright inflation breakout.
