The basic requirement for a quality business management is the availability of required information. Information architecture of enterprise and accounting should create unit, which allows to synchronize opportunities of the enterprise information system with the requirements of managers for management and decision. The main objective of this article is to present the accounting as an essential source for business management with emphasis on the availability of accounting information in real time. In order to meet the objective were applied basic methods of analysis, synthesis, and deduction. We used the informational sources from available domestic and foreign literature. Data of analysis are derived using the method of structured questionnaire, applied in the chosen set of enterprises (30 agri-food enterprises), and selected software products. To meet the objective of the paper we used also another methods: observation and interviews with managers in selected companies, information system providers, developers of software companies. We accomplished the analysis of current situation on the market with business information systems. After the synthesis and comparison of obtained data, we concluded the results that are presented in this paper. The outcome of our research is the fact that managers require actual, objective information with an immediate overview of important economic indicators and remote access to such information. Accounting as an integrating tool of business information system meets all the stated requirements and in combination with the latest technologies, such as open source software and cloud solutions, is an indispensable information source for business management.