An amount will be entered automatically in the Discount field of the Pay Bills window if, according to the terms of the purchase, a discount for prompt payment is owed to you. The amount in the Discount field can be edited. If no amount appears, you may enter an amount.
An amount entered in the field will lower the amount in the Total Owed field. The discount will be applied to the purchase only if the payment closes the purchase, that is, if amount applied is the same as the amount in the Total Owed column.