Japan’s Monetary Policy Has Reached Its Limit

 | Oct 02, 2016 02:44AM ET

Economic Commentary

On 21 September, the Bank of Japan (BoJ) decided to augment its existing “Quantitative and Qualitative Monetary Easing” policy with a new one called “Yield Curve Control”. Central banks have traditionally conducted monetary policy by controlling short-term interest rates, reducing them when the economy is stuttering and increasing them when the economy is over-heating. The new BoJ policy represents an innovation as it aims to control long-term interest rates in addition to short-term rates. Despite the innovative move, the policy is unlikely to provide a significant boost to the Japanese economy or lift its nose-diving inflation rate. For that, fiscal policy could be a more potent tool.

The BoJ took four measures in its meeting on 21 September. First, it decided to keep the short-term policy rate unchanged at -0.1%. Second, it promised to keep 10-year bond yields at around the current level of 0%. Third, it will continue purchasing about 80 trillion yen of Japanese government bonds per year, which it judges to be sufficient to keep long-term rates at zero. Fourth, it promised to continue its purchases until core inflation overshoots the 2% target for a sustainable period of time.

Why did the BoJact in such an unorthodox way? Recent data from Japan have shown activity slowing. Real GDP growth was only 0.7% in the second quarter. More importantly, deflation has set in again with core inflation touching -0.5% in July. Surveys of inflation expectations suggest that the downward trend in prices is likely to continue. The latest figures show that 27% of Japanese households expect prices not to rise compared with 18% a year earlier. Furthermore, attempts by the BoJ to stimulate the economy by introducing negative interest rates have backfired. Negative rates have hurt commercial banks’ profitability and made them more reluctant to lend.This has been an important factor behind the recent weakening of data.

Japan core inflation (excluding fresh food) (year-on-year % change)