International Monetary Fund's chief economist Pierre-Olivier Gourinchas spoke with Reuters.

In brief:

  • Too early for BOJ to tighten monetary policy as re-anchoring inflation expectations to its 2% target will take time
  • BOJ must stand ready to tighten monetary policy if inflation remains too elevated
  • BOJ will likely find it very difficult to tighten monetary policy while maintaining yield curve control
  • It is probably safer for BOJ to first move away from control of long-term yield, then raise short-term rate when need arises to tighten policy
Gourinchas 12 October 2022

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I'm pretty sure Bank of Japan Governor Ueda doesn't need any advice at all from the IMF.