What's at stake

Japan's short-term policy rate after the June meeting will shape the yen, JGB yields, and global carrying trades.

A large hike (50+ bps), smaller hike (25 bps), cut, or unchanged decision signals different views on inflation momentum and the BoJ's exit from decades of ultra-loose policy.

Who's in play

Governor Kazuo Ueda and the nine-member Policy Board set the official rate and choose the statement tone.

Markets — major Japanese banks, institutional investors, and foreign FX desks — plus the Ministry of Finance influence market reaction to the decision.

What drives it

Monthly core CPI, wage-growth metrics, and household spending are the main economic inputs that could justify a rate move.

BoJ staff forecasts, the Policy Board's inflation outlook, FX swings, JGB market functioning, and public remarks from board members will shift probabilities.

What to watch

The immediate signals are May and early-June CPI prints, the monthly labour cash earnings report, and any preliminary GDP updates before the meeting.

Also monitor the policy statement, minutes for dissenting votes, the governor's press conference, BoJ communications, and domestic bond-market volatility in the final trading days.