This invention includes methods for delivering account management services to multiple financial institutions that provide for customer deposit accounts without transaction but than nevertheless offer interest and receive enhanced deposit insurance. The methods apply at least one customer transaction to that customer's deposit account, and then re-allocate customer-deposited funds among the plurality of financial institutions in order that, for each customer, the risk of loss is not substantially increased, and that, for each financial institution, the amount of customer-deposited funds is not substantially decreased. Preferably, risk of loss is reduced by increasing the fraction of each customer's deposited funds covered by FDIC deposit insurance, and interest and enhanced insurance are available by innovative management of customer transactions and accounts. This invention also includes computer systems for practicing the methods and program products for accordingly configuring such computer systems.