The degree of risk taking by a bank is related to the size of the gross subsidy that has been extended to the bank by the safety net. This subsidy can be calculated by applying a technique that models deposit insurance as a put option on the bank's assets

"This paper examines the implications of bank activity and short-term funding strategies for bank risk and returns using an international sample of 1,334 banks in 101 countries leading up to the 2007 financial crisis. Expansion into non-interest income generating activities such as trading...

It is difficult to design and implement an effective safety net for banks, because overgenerous protection of banks may introduce a risk-enhancing moral hazard and destabilize the very system it is meant to protect. The safety net that policymakers design must provide the right mix of market and...