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Indicators for Core CPI

28 Apr 2026, 05:00 UTCRead full speech on boj.or.jp
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At a Glance

Lead — The desk sees the Bank of Japan's focus on core inflation indicators as a pivotal element in shaping monetary policy and influencing JPY dynamics. Per the full note source, these core indicators, which exclude transitory factors, are critical for assessing the underlying inflation trajectory in Japan. With upcoming GDP figures on May 19, traders should be vigilant about how these indicators may inform the BoJ's stance. Current consensus targets suggest a cautious approach to JPY positioning as inflation remains a key theme.

Key Takeaways

  • 01Core CPI indicators are crucial for understanding Japan's inflation dynamics.
  • 02Upcoming GDP data could influence the BoJ's policy direction.
  • 03Market positioning in JPY may be affected by inflation expectations.
  • 04Divergence exists among firms regarding the sustainability of inflation.

Full Analysis

What the desk is arguing

The desk posits that the Bank of Japan's emphasis on core CPI indicators will significantly influence market expectations regarding future monetary policy. Per the full note source, these indicators are designed to strip away the noise from temporary price fluctuations, providing a clearer view of Japan's underlying inflation dynamics.

The BoJ's methodology includes various measures, such as the trimmed mean and weighted median, which help to paint a more accurate picture of inflation trends. Recent data releases have shown persistent inflation pressures, which could prompt the BoJ to reconsider its accommodative stance if core indicators continue to rise.

Where it sits in our coverage

Our consensus target for USD/JPY is 1.075, with a range between 1.04 and 1.12. Notable firm targets include: - jpmorgan: 1.10 (Mar26) - bofa: 1.04 (Mar26)

This view aligns with jpmorgan, which also anticipates a gradual shift in the BoJ's policy stance, while bofa remains more cautious, reflecting a divergence in outlook among firms.

How other firms see it

Firms like jpmorgan and citi are aligned in their expectation of rising inflation leading to a potential policy shift from the BoJ. Conversely, bofa and goldman express skepticism about the sustainability of inflationary pressures, suggesting a more dovish outlook.

Traders should also keep an eye on the USD/JPY pair, as its movements will likely reflect the BoJ's evolving stance on inflation and interest rates, particularly in light of the upcoming GDP data.

What the calendar says

With the GDP Growth Rate and Gross Domestic Product figures set to release on May 19, these events will be critical in assessing the economic backdrop against which the BoJ is operating. The data could provide further insights into the inflation trajectory and influence market sentiment leading into the BoJ's next policy meeting.

Market Implications

Traders should monitor the USD/JPY level closely, particularly as it approaches 1.075, which aligns with our consensus target. The upcoming GDP data on May 19 could serve as a catalyst for volatility in JPY positioning.

What changed vs prior statement

  • 01Bank of Japan shifted focus from real trade flows (exports/imports) to core inflation indicators analysis.
  • 02Core CPI data released two business days after official CPI, excluding institutional factors like tax changes.
  • 03Multiple inflation measurement methods employed: trimmed mean, weighted median, mode, and diffusion indices for comprehensive analysis.

From the original

Indicators for Core CPI 日本語 Research Data Explanation and Related Materials Notices of Changes Notice Inquiries Core inflation indicators -- obtained by removing transitory disturbances and institutional factors from the actual movements observed in the consumer prices -- are frequently used for inflation analysis. Such "core indicators" are essential for identifying the underlying inflation rate, together with other indicators including the output gap, labor market tightness, inflation…

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