The purpose of this project was to develop a Supermarket management system for Menyenikwa Main Supermarket. The researcher collected data through interviewing the company's employees and customers/clients met at the Supermarket's main branch, and observing how the previous system was functioning from where I based myself to come up with the project report and system. Because of the nature of this study, data was further collected from secondary sources like literature review. Results from data collected indicated that the system being used was inefficient in tracking, storage and retrieval of supermarket sales and stock information which led to delays in decision making for the management. Therefore to solve the above problem I designed, implemented, tested and validated a well-functioning Supermarket management system for Menyenikwa Main Supermarket. The system developed is now able to efficiently track, store and retrieve supermarket sales against stock information in a timely and convenient fashion, thus decision making was enhanced. The research examined ways of expanding the product selling systems to improve of existing systems