Cost information system plays an important role in every organization in the decision making process. An important task of management is to ensure control over operations, processes, sectors and, not ultimately, on costs. Although at the goals of an organization compete more control systems (production control, quality control etc.) cost information system is important as it monitors the results of the others. As a result, the detailed analysis of costs, calculation of production cost quantification of losses, estimating the efficiency of the work provides a solid basis for financial control. Considering the importance of cost in production units, our articles focuses on the possibility of implementing cost calculation using the ABC method in such a company. Our works consists in case study based on specific data extracted from production plan developed in 2015. By applying the ABC method in the calculation of specific products the results obtained show that the company could improve some production areas by identifying those products which contribute to losses.