BOJ lifts rates to 31-year high, triggering yen decline and market ripples

SentiSense · Published Sep 17, 2026, 11:06 PM ET · Updated Sep 28, 2026, 2:45 AM ET

The Bank of Japan raised its policy rate by 25 basis points to 1.25%, the highest since 1995, on a split 7-2 vote, citing the risk that inflation overshoots its 2% target. Coming three months after the last hike, it is the shortest gap between Japanese rate increases since 1990. The yen weakened 0.45% to 156.64 immediately after the decision and drifted to about 157.2 later in the session, while the 10-year JGB yield fell 4.9 basis points to 2.947%. The Nikkei 225 gained about 1.4% but the broader Topix edged lower. The move followed a quarter-point Federal Reserve hike and a Bank of England hold in the same week.

Japan's central bank raised its policy rate by 25 basis points to 1.25%, the highest level since 1995. The decision was split 7-2, with board members Toichiro Asada and Ayano Sato dissenting, and the BOJ said it moved because of a risk that inflation will deviate upward beyond its 2% target. Almost 90% of economists surveyed by CNBC had expected the tightening, so the hike itself was not the surprise.

The pace is. This hike landed three months after the previous one, against a six-month gap before that, and wire coverage described it as the shortest interval between Japanese rate hikes since 1990, the tightening cycle that helped burst the country's asset bubble. Normalization began in March 2024, and the BOJ is now compressing it. The move also came in a week when the Federal Reserve raised its target range by a quarter point to 3.75% to 4% in a unanimous vote, while the Bank of England held Bank Rate at 3.75% on a 6-3 split.

Market reaction was contained rather than violent. The yen traded at 156.64 immediately after the decision, weakening 0.45%, and slid further to roughly 157.2 by mid-morning, a move of about 0.85% on the day rather than the sharp break some had positioned for. The benchmark 10-year Japanese government bond yield fell 4.9 basis points to 2.947%. Equities were narrower than the headline suggests: the Nikkei 225 rose about 1.4% while the broader Topix edged lower, so the gain was concentrated in a handful of high-priced index components. Bitcoin was quoted at $77,979.54 at 8 a.m. Eastern, up about 2.4% from the prior day.

The inflation picture the BOJ is responding to is mixed, which is why two members dissented. Headline inflation ran at 1.9% in August while core slipped to 1.7% from 1.8% in July, both still under the 2% target, and Asada argued the economy may not be strong enough to justify the move. Washington has been pressing in the other direction, with Treasury Secretary Scott Bessent urging Governor Kazuo Ueda toward decisive action at this month's G20 meetings. The question for the weeks ahead is whether the compressed hiking pace continues or pauses, and whether a yen that barely moved on a 31-year-high policy rate signals that the market has already priced the cycle.