Settings Window - Customers & Sales > Discount

In this window, you can set up the default early payment terms for your customers and  the early payment discounts to be calculated before taxes. You can also turn on line item discounts in sales invoices, orders, and quotes.

Select the task you want help with in this window:

Change the default early payment terms for customers

Calculate customer early payment discounts before taxes

Turn on or off line item discounts on invoices, orders, and quotes