Good thing about central bank holding it is that you do not need insurance. It cannot fail. All the currency that exist exists there. It is impossible for centr

Good thing about central bank holding it is that you do not need insurance. It cannot fail. All the currency that exist exists there. It is impossible for central bank to fail to fulfil their obligations or they just print more. Bank failures comes from banks using deposits. Which can result in banks assets to be lower than deposits, say if interest rates have recently rised. Central banks should be instead fully backed. I see no reason not to have some guide rate being paid... Or in worst case taken away. ECB set the rate to negative at one point... So that might happen again. So rate they pay might end up being negative meaning they charge you...