In a landmark decision that signals a significant shift in its decades-long ultra-loose monetary policy, the Bank of Japan has raised its key interest rate to 1%, the highest level seen since 1995. This historic move comes as the central bank grapples with persistent inflation and a weakening yen, both of which have become major concerns for the Japanese economy. The BoJ's policy board voted to enact the increase, ending a long era of negative interest rates and quantitative easing that was designed to combat deflation.

The Japanese yen has faced considerable downward pressure against major currencies like the U.S. dollar, impacting import costs and eroding purchasing power for consumers. This depreciation, coupled with global supply chain disruptions and rising energy prices, has fueled an unwelcome surge in inflation, moving Japan away from its long-sought price stability targets. The rate hike is intended to help stabilize the yen and curb inflationary pressures by making yen-denominated assets more attractive to investors and increasing borrowing costs.

This policy pivot has far-reaching implications, not just for Japan but for global financial markets. It marks a departure from the divergence in monetary policy between Japan and other major central banks, which have been raising rates for some time. The move could lead to increased volatility in currency markets and potentially affect global investment flows. Analysts will be closely watching how Japanese businesses and consumers react to higher borrowing costs and whether the BoJ's actions will be enough to achieve sustainable inflation without stifling economic growth.

With the Bank of Japan now signalling a more conventional monetary policy stance, what do you believe will be the most significant challenge for the Japanese economy in the coming year?

Original sourceCNBC