This research studies the use of Internet of Things (IoT) in the design of an Inventory Management System for Omni-Channel Retailing by learning the factors in the use and its benefits or outcomes taken from one of the Technology Adoption Model which is Technology-Organization-Environment. Despite the stagnation of the retail sector all over the world, we have witnessed the steady growth of the Philippine retail industry. With the continued growth of retail in our region, the popularity of e-commerce affects the future of the retail industry in the Philippines, which means that businesses must adopt a digital strategy. To identify factors that predict the use of IoT in the design of an Inventory Management system for an Omni-channel retailing in a sample of individuals in management position, a binary logistic regression analysis was conducted, simultaneously including Organizational, Technological and Environmental context into the model. Retail companies who are gearing towards an omni-channel retailing should review the Organizational context as it greatly affects the decision to use IoT based on the result of the test. Also, Customer preference is the top to be associated by the management to influence their reason to use IoT. Most customers nowadays expect stores to provide an ease in shopping experience. We have seen customers who have changed their shopping behavior from the traditional brick and mortar but also in digital. Working both offline and online strategy should be considered to have a unique customer-centric service delivery.