Toko Sade is a grocery store which is a small shop that sells daily needs and is located in the Laweyan village so that the Laweyan people can buy their daily needs in a location that is easily accessible to the Laweyan people. An ever-increasing population means that the level of demand for basic goods will also increase. This encourages the Sade shop to need a management system that manages sales administration at the Sade shop. The system used today still uses the General Ledger system so that getting information about sales and inventory takes time. So it doesn't provide efficiency when you want to see the profits and losses of a shop in one month. The purpose of this research is to make it easier for the owner of the Sade Shop to be able to see the advantages of buying and selling transactions and losses from their business. The method in this research is the Waterfall method with the aim of facilitating the creation and evaluation of my system here. The Waterfall method itself consists of needs analysis, design, coding, testing and implementation. The development of this system uses several software, namely: PHP, MySQL, Visual Code Studio, CodeIgniter and Javascript. The results of the black box test show that the sales information system and monitoring of goods at the Sade store work well as expected. In addition, the results of the usability test show that the system obtains an average score of 68, which indicates that the system is well received by users and is in the "ok" category
