The central bank also said it would offer to buy unlimited amounts of 10-year Japanese government bonds (JGB) at 0.25% every business day, repeating the guidance on market operations it made in April.

As widely expected, the central bank kept unchanged its short-term interest rate target at -0.1% and a pledge to guide the 10-year government bond yield around 0%. The decision was made by a 8-1 vote.

(Reporting by Leika Kihara, Tetsushi Kajimoto, Daniel Leussink and Kantaro Komiya; Editing by Chang-Ran Kim)