Bank of Japan Executive Director Koji Nakamura warned Monday that recent inflation spikes driven by import costs and currency shocks reflect durable structural pressures—not temporary disruptions—that demand sustained rate increases.
Speaking at a BOJ conference in May, Nakamura said supply shocks must not be dismissed as transitory because they can elevate underlying inflation and entrench long-term inflation expectations. Japan has experienced "non-linear reactions" of domestic prices to external forces, with consumer prices rising sharply in response to both import price and exchange rate shocks. Those non-linearities require direct consideration in monetary policy.
The BOJ raised its policy rate to 1 percent in June, the highest level in 31 years, and is widely expected to hike again this week. The move aligns with other global central banks confronting persistent supply-side inflation triggered by the COVID-19 pandemic, Russia's invasion of Ukraine, U.S. tariffs and Middle East conflict.
Unlike demand-driven inflation that central banks typically manage through rate adjustments, the current environment is anchored in supply constraints. Nakamura questioned whether recent disruptions have become structural rather than cyclical, potentially reinforced by income and wealth polarization, populism, geopolitical risk and climate change.
Japan faces an additional structural headwind: a shrinking labor pool that Nakamura termed a "slow-moving demographic shock." Rising wages from a tight job market, elevated import costs from a weak yen and fuel price spikes from the Middle East conflict all heighten the risk of inflation exceeding the BOJ's 2 percent target.
After ending a decade-long stimulus program in 2024, the BOJ committed to continued rate increases. Nakamura said central banks must integrate hard data with anecdotal analysis from households and firms to better gauge how inflation expectations are evolving—a more granular approach to understanding persistent price pressures.
