The main objective of this paper was to determine the possibility of introducing controlling function in company Aquaestil plus d.o.o. The lack of quality and timely information to make even better business decisions in the company is a problem of this paper. The subject of the research was to present the company information system and the possibility of introducing controlling function. To this end, the activities of controlling and its instruments have been defined. The information linkage of controlling functions with other functions within the enterprise is described. An analysis of the business information system of the company was carried out and analyzed the possibilities of introducing the co-operation function in company Aquaestil plus d.o.o. A desk research was conducted to search the literature and to form a theoretical-practical framework in which basic concepts were explained and the influence and importance of controlling within the enterprise was demonstrated. For primary research, the usual business analysis tools were used: PESTEL analysis, stakeholder analysis, selected financial data for the past two years, management analysis, SWOT analysis and TOWS matrix. The sources of information were business databases, internal documentation and a deep interview with the company owner and five head of department. Based on all the research conducted, it is proposed to upgrade the Business Information System that will support special controlling functions to provide a faster and more accurate flow of information. That would result in better decision making, optimization and correction of current production processes and achievement of even more successful business results. In addition to the initial assistance of consultants, it is imperative to permanently hire the right Pearson with the necessary qualities, knowledge and ability of controller to educate employees and reduce resistance to changes.