The Bank of Japan is widely expected to raise interest rates by 25 basis points on September 18 as policymakers confront persistent inflation and prolonged weakness in the Japanese yen.
The anticipated move would lift the BOJ benchmark interest rate to 1.25%, its highest level since 1993. It would mark the central bank’s sixth rate increase since ending its ultra-loose monetary policy in 2024 and its second hike of 2026.
Expectations for further BOJ tightening have strengthened as underlying Japanese inflation approaches the central bank’s 2% target. Higher oil and gas prices linked to the Iran conflict have intensified price pressures. Government fuel subsidies have limited the impact on consumer prices, but producer price inflation climbed to a three-and-a-half-year high in August.
Resilient wage growth has also supported the case for higher rates, suggesting Japanese companies may have greater ability to pass rising costs on to consumers.
Pressure on the yen is another major factor. Japan and the United States recently conducted an unprecedented joint currency intervention to support the Japanese currency, while U.S. Treasury Secretary Scott Bessent signaled expectations for faster BOJ tightening. USD/JPY was trading around 156 ahead of the decision.
BOJ Governor Kazuo Ueda has confirmed that policymakers will discuss rate increases at the September meeting. With a 25-basis-point hike largely priced in, investors will closely examine Ueda’s post-meeting comments for clues about the pace of future monetary policy normalization.
The BOJ must also balance inflation risks against the Japanese government's preference for supportive economic conditions. Prime Minister Sanae Takaichi has advocated looser monetary policy, while planned subsidies and tax cuts have fueled concerns about Japan’s fiscal outlook. Japanese government bond yields have meanwhile surged, with the benchmark 10-year yield reaching its highest level in more than three decades.
A hawkish BOJ outlook could strengthen the yen and push USD/JPY lower. Japanese equities could face pressure from higher borrowing costs and tighter liquidity, particularly technology stocks. The Nikkei 225 remains up about 24% in 2026 despite retreating from its June record highs.


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