How to add a discount in an invoice/estimate
Using the Invoicelabs invoice maker, you can add customized discounts to each item. You can apply a discount to the overall bill.
Step 1: On the invoice creation screen, click on Discount.
Step 2: Invoicelabs allows you to add two types of discount; flat and percentage. Select Discount type and Discount rate and click save.
Step 3: The selected Discount type and rate will be applied to the bill.