Thereafter, in order to enhance monetary easing while responding to developments in economic activity and prices, it introduced QQE with a Negative Interest Rate in January 2016, and QQE with Yield Curve Control in September.
Under this so-called yield curve control policy, the Bank set the target level of 10-year Japanese government bonds (JGB) yields at "around zero percent" and, in practice, such yields had been in the range of around plus and minus 0.1 percent.