The Payment options found on a sales order or invoice are used to set the terms or process any payment. The only Payment terms options without processing a payment is Cash or Charge. Down payments or cash payments can be processed using a variety of payment options such as Cash, Check, Credit / Debit Card, or Gift Card.
The Terms within the sales order 
 or invoice is copied from the Terms 
 tab of the customer account. Review the Customers 
 > Changing Customer Information section for instructions on changing 
 the terms within the customer account. Click on the Terms 
 tab on the upper right corner of the sales invoice dialog as shown below:

Set the proper Discount template by clicking on the right arrow button to the right of the discount field. A drop-down list will display all the discount options. If no discount is offered on these sales orders, set the entry field to (none) and ignore the second step.
After a discount template is selected, discount detail 
	 will need to be entered. For example, if the __ 
	 % paid in __ days template is chosen, the discount percentage 
	 and the number of days in which the customer is allowed to take the 
	 discount must be entered.
	
Set the terms for this sales order by completing the following two steps:
Set the Due template entry by clicking on the right arrow and selecting one of the options. If this field is set to (none), the customer will be issued an invoice with no terms. The most common terms template is Net __ days. Complete this entry by setting the days as shown in the next step.
The template may require term details such as a date or number of days. For example, if Net __ days template is selected, the exact number of days must be set to complete due date terms.
Use the Charge 
	 option if the customer has Cash 
	 terms but the payment cannot be processed at the same time as the 
	 invoice. Select the Due on Receipt 
	 or Collect on Delivery options 
	 as shown below:
	
Select the appropriate Payment 
	 option to open the payment dialog as shown below:
	Various payment methods can be used including credit cards, gift cards, 
	 ACH direct payment, and other options. Review the Customer 
	 Payments > Payment Options section for more option details 
	 including setup and configuration.
The software will set the Payment 
	 terms to Cash when a new invoice 
	 is created unless the customer's terms are set to Default 
	 as Charge. Click on the Terms 
	 tab of the customer to view or set the Default 
	 as Charge option.
	
	A payment can be applied to the sales invoice / order using one of 
	 the following three options:
A down payment can be attached to an open sales order. Review the Customer Payments > Down Payments section for more details.
An invoice can be processed as a cash invoice. Review the Customer Payments > Payment Entry Dialog section for more details.
An invoice can also be paid on account after the invoice is processed. Review the Customer Payments > Processing Customer Payments section for more details.