Economic and occasion calendar in Asia – Australian inflation knowledge, BoJ Opinions.

BOJ Summary of Opinions vs. Minutes: what’s the difference

The Bank of Japan publishes two separate accounts of each monetary policy meeting, and they serve very different purposes.

The Summary of Opinions is the fast release. It comes out roughly one to two weeks after the meeting concludes and captures the range of individual views expressed by board members during the deliberations, presented as anonymised, attributed-to-no-one quotes or paraphrased positions. Think of it as the highlights reel: you get a sense of where the nine-member board’s thinking clustered, where there was dissent or hesitation, and what conditions members were watching. It does not reveal who said what, and it is deliberately compressed. For markets, it is the first official window into the texture of internal debate, which is why it tends to move JPY and JGB yields on release.

The Minutes are the deep read. They land roughly eight weeks after the meeting, well after the following meeting has already taken place. They provide a much fuller narrative of the discussion: the economic assessments the board considered, the arguments made for and against policy options, and the reasoning behind the final vote. Attribution remains collective rather than individual, but the level of procedural and analytical detail is substantially greater.

In practical terms: traders and journalists lean on the Summary of Opinions for near-term signals because the Minutes arrive too late to be actionable for that meeting cycle. The Minutes matter more for understanding the board’s evolving analytical framework and for building a picture of how thinking shifted between meetings.