Decline of oil prices and the negative interest rate policy in Japan
In February 2016, the Bank of Japan (BOJ), in order to reach a 2% inflation target, initiated a negative interest rate policy by increasing massive money supply through the purchase of long-term Japanese government bonds (JGBs). This policy flattened the yield curve of JGBs. Banks started to purchase government bonds less frequently, because of the negative yield for both short-term government bonds and even for long-term government bonds up to 15 years. On the other hand, a vertical investment–savings curve in the Japanese economy prevented the growth of corporate bank loans. Except for a few periods, the 2% inflation target could not be achieved. This paper examines this phenomenon, presents the reasons behind it, and offers solutions.