This Report considers the various meanings the word "efficiency" can have, the current way Deposit Guarantee Schemes (DGS) operate, and a quantitative analysis investigating the capability of the EU Member States to handle reimbursements or preventive interventions of varying magnitude. Consequently, this Report also describes the various steps of the intervention procedure (both in case of payout and for preventive interventions), the authorities involved and their interaction, and the way DGS manage and invest available funds. Even though it has been difficult to draw general and harmonized conclusions (as each incident was distinctive), some key conclusions can be made.JRC.G.9-Econometrics and statistical support to antifrau