Credit allocation, capital requirements and output

We show how banks excessive risk-taking, stemming from informational asymmetries in loan markets, can lead to an excessive output loss when a recession starts. Risk-based capital requirements can alleviate the output loss by reducing excessive risk-taking in normal times. Model simulations suggest that the differentiation of risk-weights in the Basel framework might be further increased in order to take full advantage of the allocational effects of capital requirements. Our analysis also provides a new rationale for the countercyclical elements of capital requirements.