BOJ’s Sato Signals Cautious Support for Gradual Rate Hikes Despite September Dissent

Bank of Japan Policy Board member Ayano Sato adopted a notably less dovish tone than her September dissent suggested, stating in a Kyodo News interview on October 5 that she supports continued gradual tightening. Sato, one of two board members who opposed last month’s rate increase to 1.25%, emphasized, “I support the policy of adjusting (the key rate) gradually,” adding that higher rates “can contribute to achieving sustainable economic growth.” Her remarks indicate that the September disagreement centered on timing rather than opposition to further normalization.

This distinction holds added political weight because Sato joined the BOJ board in June after being appointed by Prime Minister Sanae Takaichi, who has voiced caution regarding higher interest rates. Sato stressed that the BOJ must make policy decisions independently, while ultimately ensuring monetary policy aligns with the government’s expansionary fiscal stance. Explaining her dissent, she noted that private consumption momentum “has not been that strong,” arguing that future rate decisions should be guided by trends in household spending and income. The underlying message is not resistance to higher rates, but rather a preference for a slower pace until domestic demand appears more resilient.

Sato also outlined a more balanced risk profile. She acknowledged that inflation risks have risen due to Middle East instability and higher crude oil prices, but cautioned that a sudden downturn in AI-related demand could cause the outlook to “shift sharply toward pessimism.” Similarly, a worsening Middle East conflict could cool the economy and dampen inflation. For markets, the crucial takeaway is that even a newly appointed board member aligned with the dovish wing is not rejecting further hikes. The debate is increasingly focused on “how quickly the BOJ should tighten,” rather than whether normalization should continue at all.

Key Takeaways

• Sato’s September dissent was about timing, not direction. She continues to support gradually raising the policy rate.
• She stated that higher rates “can contribute to achieving sustainable economic growth,” rendering her stance less dovish than the dissent alone implied.
• The signal carries added significance because Sato was appointed under Prime Minister Sanae Takaichi, whose administration has adopted a more cautious approach to rate hikes.
• Sato nevertheless emphasized BOJ policy independence, while asserting that monetary policy should ultimately coexist with the government’s expansionary fiscal stance.
• Her primary concern remains weak private consumption, which she described as “has not been that strong.”
• Future rate increases should therefore be contingent on consumption and income trends, rather than a predetermined schedule.
• Sato acknowledged elevated upside inflation risks from Middle East instability and higher crude oil prices.
• However, she also highlighted downside risks, warning that AI-related demand could weaken abruptly and the outlook could “shift sharply toward pessimism.”
• Broadly, the BOJ debate is shifting toward how quickly to normalize, rather than whether normalization should continue at all.

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