The package of quantitative easing announced today by the new regime at the Bank of Japan is one of the largest monetary injections ever announced by the central bank of a major developed economy. The only rival for that crown is the emergency easing in monetary policy which took place in most economies in late 2008. But today’s BoJ action has not been driven by any short-term emergency. It represents a deliberate change in philosophy, and a complete abandonment of everything that the Bank of Japan has said about monetary policy in the past two decades. Those who believe in quantitative easing certainly have their experiment, writ large in Tokyo.
In effect the new governor, Haruhiko Kuroda, has imported into Japan the whole of the Federal Reserve’s post-Lehman balance sheet strategy, and he will implement it in under two years, instead of the five years or more taken by the Fed. The doubling in the Japanese monetary base over a period of 21 months is in itself remarkable. Taken together with the extension of the duration of bonds purchased from less than 3 years to an average of 7 years, the injection becomes of historic proportions.
The new strategy brings, for the first time, a real prospect of breaking the deflationary psyche which has plagued Japan for so long. But it also brings risks that the strategy might work too well, with inflation expectations unhinging the bond market. Mr Kuroda is trying to pull off a difficult trick, which is “to drastically change the expectations of markets and economic entities”, and to do so in a very particular way.