BOJ executive saw need for vigilance to 'non-linear' inflation spikes

Japan's central bank, the Bank of Japan (BOJ), has expressed concern over the potential for non-linear inflation spikes, according to remarks made by BOJ Executive Director Koji Nakamura at a monetary policy conference. Nakamura noted that Japan has observed non-linear reactions to external shocks, such as import price and exchange rate fluctuations, leading to sharp increases in consumer prices.

The BOJ has raised interest rates to a 31-year high of 1% in June and is set to raise them again this week, aligning with other central banks responding to mounting inflation risks. While central banks typically raise rates to cool demand-driven inflation, the recent focus is on supply-side inflation driven by factors such as the COVID-19 pandemic, Russia's invasion of Ukraine, higher U.S. tariffs, and the Middle East conflict.

Nakamura warned that persistent inflation risks could necessitate steady interest rate hikes and emphasized the need to factor in non-linear price reactions in monetary policy considerations. He highlighted the structural impact of a shrinking labor pool, which is lifting wages, as a factor that cannot be dismissed as temporary. Nakamura further stressed the importance of combining data with anecdotal analysis to capture changing household and firm behaviors and their effect on inflation expectations.