Available in Sage 50 Premium Accounting and higher.
Add a Standard Discount to a Customer Record
Before you can perform this task
                                                
                                                    
                                            
                                            Make sure that Calculate Line Item Discounts On Invoices, Orders, and Invoices is selected.
                                                 To add a standard discount to 
 a customer's sales quotes, orders, and invoices:
                                            - In the Home window, click the Customers and Sales tab, and click the Customers icon.
 - Double-click on the customer name to open their record.
 - Click the Options tab.
 - In the Standard Discount box, type in a number.
 - On the File menu, click Save.
 - Close the window.