Aska Outdoor is a business that sells sports and outdoor equipment in the Tangerang area. The transaction recording system at Aska Outdoor currently still uses manual recording in books which often causes various problems in managing purchase transaction data, sales transactions and inventory of goods such as inventory data which is often inaccurate, service becomes slow, goods are sold online through marketplace is only items with a lot of stock, the possibility of loss will not be caught immediately, and sometimes there is an accumulation of stock. To solve this problem, it is necessary to create a web-based point of sale (POS) information application that can improve and simplify the performance of employees at Aska Outdoor stores so that they can produce reports that are faster, more precise and accurate. The system design stages that will be proposed are using UML diagrams. The application is made using the PHP programming language and using the MySQL database. With the creation of "Designing a Web-Based Point Of Sale (POS) Information System at Aska Outdoor Tangerang Stores" it is hoped that it can assist sales admins (cashiers and online marketing) and warehouse admins in managing inventory data properly such as goods data, purchase transaction data, sales transaction data , supplier data, and customer data. Meanwhile, leaders can find out and get information about purchase transactions, sales transactions, and inventory of goods in the form of reports quickly, precisely and accurately.