Bank of Japan Raises Interest Rate to 31-Year High Amid Global Inflation Pressures

Japan's central bank has raised its main interest rate to a fresh 31-year high, continuing its departure from decades of ultra-low borrowing costs as the nation navigates mounting economic challenges. According to reporting by BBC News business reporter Peter Hoskins, the Bank of Japan (BOJ) increased its benchmark rate from 1% to 1.25% on Friday in a widely expected move, bringing borrowing costs to a level not observed since 1995.

The policy shift arrives as major global central banks implement rate hikes in response to surging energy prices driven by the ongoing Iran war, which have intensified inflationary pressures worldwide. Just days prior, the US Federal Reserve raised its benchmark interest rate for the first time in more than three years, while the European Central Bank also increased its borrowing costs earlier in the month.

The BOJ has steadily adjusted its monetary policy upward since 2024, when its rate stood at minus 0.1%. Friday's decision marks the sixth rate hike by the Japanese central bank over the past two and a half years as policymakers work to align rates with those of other major global economies. Tightening monetary policy typically strengthens a nation's currency by making it more attractive to currency traders.

"One of the world's last sources of ultra-cheap money is disappearing," market analyst Lale Akoner from investment company eToro told the BBC.

Japan faces a complex array of domestic and international economic hurdles, including a persistently weak yen, climbing prices, and a shrinking workforce. Official data released Friday morning ahead of the BOJ announcement indicated that core inflation eased slightly to 1.7% in August, down from 1.8% the previous month, though it remains near the central bank's targeted 2% level.

Although Japan's current inflation rate is modest by international comparison, rising consumer prices represent a novel challenge for an economy that endured roughly three decades of ultra-low inflation or persistent deflationary conditions.

Global energy markets have experienced turbulence this year as the Iran war disrupted shipping operations through the vital Strait of Hormuz. Because Japan relies heavily on energy imports from the Middle East, the country remains acutely vulnerable to such supply chain disruptions.

In addition to energy pressures, the Japanese currency has faced severe depreciation. In August, Tokyo and Washington officials confirmed a joint currency intervention to halt a rapid decline in the yen after it hit a fresh 40-year low. The coordinated market action marked the first joint intervention between the two nations since 2011, when they acted following the catastrophic earthquake and tsunami in eastern Japan. Following the August action, representatives from Japan's Ministry of Finance and US Treasury Secretary Scott Bessent stated that they were prepared to conduct further joint interventions if necessary.

Treasury Secretary Bessent has also pressured the BOJ to increase interest rates to bolster the currency, publicly urging BOJ Governor Kazuo Ueda to take corrective action.

Analysts warn that ongoing currency weakness could complicate future monetary strategy. Akoner noted that if the yen continues to trade weakly despite higher interest rates, resulting inflationary pressures might compel the BOJ to accelerate its tightening cycle faster than either markets or the Japanese government would prefer.