Bank of Japan (BoJ) board member Hajime Tamura has injected a strong hawkish signal into the central bank’s policy outlook, placing Japan’s neutral interest rate at around 2% and explicitly calling for rate hikes toward that level. The remarks, delivered first in a speech to business leaders in Okayama and later reinforced in an interview, represent one of the most concrete numerical targets yet from a BoJ policymaker.
Tamura’s 2% estimate stands well above current market pricing, which anticipates a much slower normalization path. Japan’s policy rate is currently just 0.25%, implying that, in Tamura’s view, the central bank has up to 175 basis points of tightening room before policy becomes even neutral. He warned that inflation risks are tilted to the upside and could overshoot the BoJ’s 2% target if rates stay too low for too long, undermining the bank’s credibility and potentially fueling speculative bubbles.
The neutral rate — known as r* — is a theoretical concept that cannot be directly observed. Tamura’s explicit figure suggests internal debate within the nine‑member board is intensifying. While Governor Kazuo Ueda has stressed a data‑dependent approach, Tamura’s comments may shift market expectations for earlier and faster rate moves, with the next policy meeting scheduled for June 13–14, 2025.
For global investors, a more aggressive BoJ tightening cycle could strengthen the yen, lift Japanese government bond yields, and alter the dynamics of yen‑funded carry trades, with potential ripple effects across risk assets, including cryptocurrencies.
