The seminal Modigliani-Miller (1958) theorem is a cornerstone of corporate finance theory. It provides conditions under which changes in a firm's capital structure do not affect its fundamental value. A recent controversial debate around the relevancy of the Modigliani-Miller theorem regarding...

The capital structure of banks has become the focus of an extended debate among policymakers, regulators and academics. The seminal Modigliani-Miller (1958) theorem is seen as supportive of regulators' drive to require higher equity capital to banks. This raises the question on to what extent...