Direct Answer
The additional CET1 requirement is a mandatory capital buffer imposed on D-SIBs, scaled progressively across five buckets to mitigate the risk these massive institutions pose to the financial system
| State Bank of India | Bucket 4 | 0.80% |
| HDFC Bank | Bucket 2 | 0.40% |
| ICICI Bank | Bucket 1 | 0.20% |