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Mizuho Securities

July 1, 2026

Impact of Public-Private Growth Investment on Japan's Potential Growth and BOJ Policy

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The report evaluates the impact of Japan's public-private growth investment strategy on the economy's potential growth and BOJ policy. It concludes that significant long-term growth effects are unlikely to alter the BOJ's current rate-hiking trajectory.

Key Takeaways

  • 1.Public-private growth investment will take considerable time to impact potential growth rates, suggesting the BOJ should separate terminal rate hike cycles from long-run neutral rate impacts.
  • 2.The Takaichi administration views accommodative monetary conditions as a prerequisite for its growth strategy, creating political tension with BOJ rate hikes.
  • 3.Cabinet Office projections regarding 1.5%–2% long-run potential growth are viewed as overly optimistic.

Table of Contents

  • Impact of public-private growth investment on the BOJ's terminal policy rate level
  • The Takaichi administration's stance vis-à-vis BOJ rate hikes
  • Impact of public-private growth investment on the longer-run 'neutral' policy rate level
  • Cabinet Office projections need to be considered highly provisional

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