It won't happen overnight" as the public must be convinced Japan won't fall back to deflation, Gourinchas said, adding it was "too early" for the BOJ to tighten policy.
While it was appropriate to keep interest rates ultra-low, the BOJ must keep in mind the experience of other central banks that are still struggling to tame high inflation.
So, there is a need to be vigilant and to be ready to tighten monetary policy if inflation remains too elevated."
He also said it would be "very difficult" to tighten monetary policy while maintaining YCC, due to the challenge of determining the appropriate level for two rate targets.
And then, if the need arises to tighten monetary policy, it can do so as part of the usual tightening of the policy rate," he said.
Persons:
Pierre, Olivier Gourinchas, Gourinchas, Kazuo Ueda, Leika Kihara, Sam Holmes
Organizations:
Bank of Japan, Monetary Fund's, Reuters, Thomson
Locations:
Japan, TOKYO