This application provides Odoo users with the feature to calculate Universal Discount on sale and purchase order. Universal Discount can be calculated in percentage or by amount. Odoo Discount Module works on the Sale Order, Purchase Order, Customer invoice, Customer Credit Note, Vendor's bill, and Vendor's bill Refund. Earlier, while developing a discount calculation app for Odoo, we checked several Odoo discount apps. Those apps were full of glitch and less functional. Odoo invoice discount app is completely compatible with Odoo POS- Point of Sales app and can provide seamless benefits to the user.