G-SII buffer
From ACT Wiki
Bank supervision - capital adequacy - CRD IV.
The G-SII buffer is an additional capital buffer required of Global Systemically Important Institutions (G-SIIs) under the European Union's CRD IV.
For relevant institutions it is likely to be in the range of 0% to 3.5% of risk weighted assets (RWAs).
It is subject to a three-year phase in period from 2016 to 2019.