Modern technology has significantly improved the quality of life for humans. However, with the increase in technology usage, there has been a rise in the number of people visiting shopping malls. As a result, the billing process has become more time-consuming, and customers often have to wait in long queues to get their goods billed. To address this issue, we propose the development of a smart shopping cart system that uses RFID and Arduino to keep track of purchased products and generate bills automatically. The main objective of this paper is to reduce the time consumed in the billing process. Our On-go billing Cart with an Automatic Billing System will use an EM-18 RFID Module and Arduino.