In QBO, you can set up invoice terms to apply early payment discounts to your customers/vendors.
From QBO click the clog in the top right hand Go to LISTS > ALL LISTS
When you have named your term with a percentage at the start The Order Exchange will find anything with a % marker in and apply the discount of the number directly before it.
12% Net 30 Days will apply a 12 % discount.
**PLEASE NOTE - DO NOT PUT ANY SPACES BETWEEN THE NUMBER AND THE % SYMBOL AS THIS WILL JUST BE IGNORED AND TAKEN AS 0%**