This document summarizes a project on a supermarket billing system developed by students at Buddha Institute of Technology. The system allows 3 types of users - data entry operators, administrators, and bill calculation operators. It tracks product inventory and sales, applies taxes and discounts at checkout, and generates reports. The proposed system improves on existing billing systems by tracking customer purchase histories to build customer relationships and provide sales analytics and recommendations. The project uses Java Swing for the front-end, MySQL for the back-end, and has requirements of 4GB RAM, 1TB hard disk, and a Core 2 Duo processor. Data flow and screenshots of the admin and cashier interfaces are included.