Optional models for the contributions to the explicit deposit insurance system

The explicit deposit insurance is considered as an acquisition by a bank of a put option. The paper discusses approaches to determining the optimal amount of insurance premiums using option pricing models. The authors describe the classical Merton model based on the Black-Scholes option pricing model, as well as its subsequent modifications that allow to consider the strategic behavior of the bank and the insurer. The paper shows that the limitations of option models can be explained by the lack of information about the value of bank assets, the quality of credit policy and loan portfolio monitoring, and the macroeconomic situation. The use of market share price to determine the volatility of bank assets value also does not allow option models to be widely used in the practice of differential insurance premiums implementation.