But there's no clarity on what the final decision would be," said one of the sources on the chance of a policy shift in July. Lately, however, BOJ policymakers been dropping signs that inflation is being increasingly driven by improving consumer demand. CREDIBILITY ON LINEThere is no consensus within the BOJ on how soon it should start dialing back stimulus. Proponents of early action point to the rising cost of YCC, such as market distortions caused by the BOJ's huge bond buying. "A July policy tweak would contradict the logic the BOJ had been using to justify keeping easy policy," said Naomi Muguruma, senior market economist at Mitsubishi UFJ Morgan Stanley Securities.

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Persons: Kazuo Ueda's reassurances, Ueda, Naomi Muguruma, Mitsubishi UFJ, Mitsubishi UFJ Morgan Stanley, Leika Kihara, Kim Coghill Organizations: Bank of, Mitsubishi, Mitsubishi UFJ Morgan, Mitsubishi UFJ Morgan Stanley Securities, Tokyo, Thomson Locations: TOKYO, Bank of Japan