Bank of Japan raises rates to 31-year high, signals further hikes

Japan’s central bank just did something it hasn’t done since Bill Clinton was in the White House and Windows 95 was cutting-edge technology: it pushed interest rates to 1.25%.

The Bank of Japan raised its benchmark policy rate by 25 basis points on September 18, marking the highest level since April 1995. The decision passed with a 7-2 vote, and Governor Kazuo Ueda made clear this might not be the last stop on the tightening express.

What happened and why it matters

The rate hike, decided at the conclusion of a two-day policy board meeting, represents the BOJ’s sixth increase over a roughly 2.5-year normalization campaign that began when it exited negative interest rates back in March 2024. The previous hike brought rates to 1% in June 2026, making this the first move in three months.

Two board members weren’t on board. Toichiro Asada and Ayano Sato voted against the increase, arguing that neither inflation acceleration nor economic growth warranted another turn of the screw.

Governor Ueda framed the decision as preemptive rather than reactive, indicating that additional rate increases could follow if price pressures continue to intensify, though he also signaled that future decisions would be made carefully with an eye on economic risks.

Market reaction: yen down, stocks up

Markets responded in a pattern that might seem counterintuitive at first glance. The yen weakened to approximately 157 per dollar after the announcement, rather than strengthening as you might expect from a rate hike.

Japanese equities, meanwhile, liked what they heard. The Nikkei 225 climbed about 1.9% following the decision.

The yen’s persistent weakness has been a headache for Japanese policymakers well beyond the rate decision itself. Between July and August 2026, the BOJ engaged in approximately $96 billion worth of yen-buying market interventions to prop up the currency.

The bigger picture

Rising energy costs, partly driven by Middle East conflicts, have pushed Japanese inflation higher. A weak yen has amplified those imported price pressures. And wage growth has finally started to materialize through evolving wage-price dynamics.

The 2% inflation target that the BOJ spent years trying to reach from below is now a ceiling it’s worried about breaching from above.

The BOJ’s massive yen interventions came amid significant global influences, including public comments from the US Treasury Secretary about currency dynamics.

What to watch from here

The two dissenters on the policy board deserve ongoing attention. A 7-2 vote is still a comfortable majority, but it signals that the internal debate about the pace of tightening is real.

Despite six rate hikes over 2.5 years, the currency is still trading at levels weak enough to justify nearly $100 billion in intervention spending over a two-month period.

For global investors, the BOJ’s normalization has implications that extend well beyond Tokyo. Japan has been the world’s largest creditor nation, and Japanese institutional investors hold enormous portfolios of foreign bonds. As domestic rates rise, the incentive to repatriate capital grows.