A sweep account service is an automated service used when the level on an account exceeds a certain amount, or falls short of a certain level. Balances will be transferred to different account(s). It has two main features for customers to choose: 1. Sweep out- An expenditure transaction is made on your behalf when the balance of the account exceeds the set amount. 2. Sweep in- An expenditure transaction is made on your behalf from another account when the income account balance is set for a certain amount, but the actual account balance is less than the set amount.