Discounts percentage can be applied individually against the material item when creating a Quote/Sales.
Or in bulk via price levels:
Set up price levels
Bulk update price levels
Have a look at similar frequently asked questions or visit our FAQs page for more information
Can I import my quotes and have reminders set up?
When I modify the unit price on a sales order, I receive a message. What does it mean?
What happens to my inventory value in Xero?
How do I add my logo and company name to invoices and delivery notes?
Is there a plan to automate rounding for cash payments in TidyStock?