Bank of Japan warns of rising inflation risk above 2% target

The Bank of Japan (BOJ) is waving a yellow flag, cautioning that inflation might just sprint past its 2% target. On June 19, 2026, Deputy Governor Ryozo Himino put the spotlight on this inflationary risk, echoing growing concerns that have been giving central bankers sleepless nights.

BOJ’s rate hike: A historical move

In a move that harks back to the 1990s—1995 to be precise—the BOJ raised its policy rate to 1% on June 16. The increase of 25 basis points marks the fourth rate hike since the beginning of the tightening phase in March 2024.

The BOJ’s decision was led by Deputy Governor Shinichi Uchida amidst Governor Kazuo Ueda’s medical leave, and was primarily driven by rising energy costs and a weakening yen.

Underlying causes: Energy and expectations

Crude oil prices played a central role in this inflation narrative, with rising business-to-business price pass-through from increased energy costs prompting the BOJ’s move. Climbing medium- to long-term inflation expectations have also contributed to a review of monetary accommodation policies, while the BOJ maintains its broader accommodative financial conditions.

Why investors should care

Markets are likely to feel the effects of this monetary shift. The yen could potentially strengthen against other currencies if carry trades unwind. Equity markets could also be affected, with heightened inflation concerns casting a shadow over rate-sensitive sectors.

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