The appropriate level of bank capital and, more generally, a bank's capacity to absorb losses, has been at the core of the post-crisis policy debate. This paper contributes to the debate by focusing on how much capital would have been needed to avoid imposing losses on bank creditors or...

We find that capital in the range of 15–23 percent of risk-weighted assets would have been sufficient to absorb losses in the vast majority of historic banking crises in advanced economies. Further capital increases would have had only marginal effects on preventing additional crises....