Currently, all organizations face financial difficulties in conducting their business, regardless of the type of such activity, size, image of the company and the qualifications of its managers and employees. Today, the domestic economic situation is changing rapidly under the influence of environmental factors and is developing unpredictably. Therefore, financial controlling is designed to penetrate the enterprise management system. Inefficient controlling is the main cause of the company's financial crisis. The article considers the essence and tasks of financial controlling system as a component of enterprise financial management, highlights the historical perspective of controlling as a science and the reasons for implementing financial controlling in domestic enterprises, summarizes the approaches of economists to the concept of "financial controlling", and formed concepts for the system financial controlling at enterprises, the functions, principles and components of financial controlling are characterized, the peculiarities of the tasks of strategic and operational financial controlling are given. The authors substantiate the need to implement a system of financial controlling in domestic enterprises to increase the efficiency of their activities based on the use of modern methodology and approaches to early detection and response to problem situations. The problems that arise in the enterprise during the organization and use of the financial controlling system are described. The effect of the controlling system on the financial security of the enterprise, as well as its advantages are studied. The main means of improving the company's financial controlling system include: reducing time and effort to process information and make management decisions, accuracy and availability of data, application of innovative technologies and methods, strategic planning, creating a separate financial controlling department at the company with skilled workers. The main factors that make it difficult to understand the concept of "financial controlling system" are studied.