In the modern economy, the ability to make effective use of information is one of the most important factors affecting efficient management of an organization. It often determines organization’s competitive advantage. Accounting system, providingmulti-sectionaldata used for implementation of all management functions, is a crucial part of the information system of the company. This article shows the importance of accounting as an important source of information used in small and medium-sized enterprises management. On the basis of the author’s own studies, level of use of information generated by the accounting in small and medium-sized enterprises was assessed. Identification of barriers in use of such information was made.