Advance Payment Bonds
An advance payment, or simply an advance, is the part of a contractually due sum that is paid or received in advance for goods or services, while the balance included in the invoice will only follow the delivery. It is called a prepaid expense in accrual accounting for the entity issuing the advance.
If the client agrees to make an advance payment (sometimes referred to as a down payment) to a supplier, a bond may be required to secure the payment against default by the contractor. This is referred to as an advance payment bond.