Abstract-Retail Shop Billing System acts as an embedded database containing various products and its price details. This project is a windows application that acts as a user-friendly billing system. This project is developed using C#.Net as the front end and SQLite as a back-end. The SQLite database stores various product, user, cashier and bill related details. Admin visiting the windows application can add products and cashier details. The admin may view customer and transaction details. The cashier can add customer and his/her details. And also perform billing process and generate report. Retail Shop Billing System is a windows application which is implemented in C#.Net platform.