We identify the effects of negative interest rate policies on bank behavior using difference-in differences identification and data on all Swiss banks. First, we find that going negative can interrupt not only the pass-through from policy to deposit rates, but also that to mortgage rates....

The paper analyzes the experience with unconventional measures to cope with the Zero Lower Bound. It argues that forward guidance and quantitative easing are the natural extension of optimal monetary policy within the New Keynesian Framework, facing a Lower Bound. Unconventional policy had...