The paper discusses the risks in the bank and the associated operational problems. A simplified map of the different types of operational risks is presented. Additionally, the reasons causing risks for a bank are examined. GAP analysis is outlined as a key key instrument for analyzing the potential risks to liquidity and some important recommendations are made regarding the calculations of the remnants of client funds. Main conclusions focus on the construction of variants of different scenarios of the bank's liquidity circumstances and the determination of the vulnerability of the bank to the parameters for the "crisis".