Point of sale software is the software retailer stores used in calculating and managing sales. Available in different programs, POS softwares range from basic features to advanced programs in improving business operations and efficiency. POS software, which is sometimes called retail management software, functions in data storage, tracking and recording sales. POS software and POS hardware interrelate in blowing up their functions. The POS software in convenience stores for example, cash register is used to tot up sales, computerizes tax on items, calculates the change back and manages inventory database, both stock and sold items. Because POS software varies according to the needs of an industry, choosing one is a matter of crucial decision as it is also quite high-priced. Oftentimes referred as retail management software, the POS software major element is the inventory management. Inventory management is the state of cross checking inventory records to actual inventory level. Inventory management is perhaps the prime of point of sale system; without such, companies would have been facing a lot of headaches in tracking sales and checking inventories. In POS system, items are simply scanned and recorded. Theft incidences and inside jobs, too, place no room in the system. Retail management is best pictured in those large-scale companies than those small-sized businesses. Small-sized businesses have lesser items and employers to control, unlike large scale companies that are more huge and complex, putting them more prone to mistakes and errors. As far as employees’ role is concerned, there must be a clear job description among workers. For example, in convenience stores with POS software system, cashiers who deal with point of sale must not reconcile any inventory management tasks.