Add a one-time Discount to any Invoice
You can add a custom discount on-demand to any new, existing, or upcoming Invoice by clicking the "Add +" button on the invoice. Note: you can use the same process to add discounts on Quotes and Jobs.
You can set whether to use a fixed rate or percentage based discount by clicking on the "$" or "%" icon in the discount field.
Note: Percentage based discounts will be proportionately applied to each line item on the invoice and the taxable subtotal for the invoice will be adjusted accordingly.
You can also choose to add any line item to the invoice and change the amount to a negative value. This is an alternative way to apply a fixed rate discount but with more description and visibility to the customer.