Soft floor at -50bp via shifted-lognormal (post-2014 regime)
| source | ECB/SNB rate-cycle observation |
| derivation | expert_judgment |
| quality | estimated |
| set | 2026-05-25 |
| last reviewed | 2026-05-25 |
| next review due | 2026-12-31 |
Allows negative rates in stress scenarios; classical lognormal models fail at zero bound.