Goldman Sachs says BOJ could accelerate tightening beyond this week’s expected hike

Goldman Sachs's The Goldman Sachs Group, Inc. ↘ 0.26% economists say a rate hike at the Bank of Japan's meeting on September 17–18 is all but certain, and are increasingly betting the central bank will accelerate its tightening pace with a potential second move as soon as December — a scenario that carries broad implications for the yen, Japanese equities, and global bond markets already under strain.

A Hike Priced In, but the Pace Is the Real Question

Markets have largely absorbed the prospect of a 25-basis-point increase that would lift the BoJ's policy rate to around 1.25%, its highest since 1995. A Reuters poll in late August found a majority of economists expected the BoJ to move more swiftly than previously anticipated, and prediction markets have priced a September hike at above 98%.polymarkettrader+2

Goldman's note, published ahead of the meeting, frames the decision itself as secondary to the forward guidance that follows. The bank cites a cluster of forces it sees pushing inflation risk higher: elevated energy prices, robust AI-related demand, a weaker yen, and financial conditions it still considers accommodative. Goldman also points to Prime Minister Takaichi's fiscal stance, which it expects to remain loose, as an additional source of upward price pressure.investinglive

The bank had shifted its BoJ rate-hike call forward from January 2027 to September as recently as late August, and a Goldman Sachs podcast in August noted the BoJ had already "signaled its openness to a faster pace" of tightening.gurufocus+1

Broader Market Fallout

The timing of Goldman's warning coincides with a turbulent stretch for global bond markets. The 10-year U.S. Treasury yield topped 5% on Tuesday for the first time since 2007, driven by surging oil prices, expanding government debt, and heavy corporate issuance tied to AI spending. Japan's 10-year government bond yield climbed to 3.042%, a level not seen since 1996, while the 30-year JGB yield rose to 4.12%.bitget+1

Goldman argues that a faster hiking path could help ease pressure on long-end JGB yields, which it says look inconsistent with what it views as strong domestic fundamentals. But the read-through for equities is less favorable: a steeper rate trajectory would tend to strengthen the yen, weighing on exporters that dominate the Nikkei 225, which fell alongside broader Asian markets on Tuesday. The Topix lost 0.7%, while Korea's Kospi dropped more than 1.5% intraday.investments.halifax+2

What Comes Next

Reuters reported in August that BoJ officials were already considering hiking more aggressively than the roughly twice-a-year pace seen so far. Credit Agricole's Takuji Aida, an economic adviser to Prime Minister Takaichi, projected another hike by January followed by a return to roughly one increase every six months.indexbox+1

Should the BoJ deliver its expected hike this week and signal openness to moving again before year-end, attention will shift quickly to how the yen and Japanese equities absorb that recalibration — and whether the Federal Reserve's own rate decision on Wednesday compounds the pressure across global markets.staradvertiser+1