The topic of the final paper is controlling. The purpose of this paper is to show that controlling is one of the factors influencing the success of a company. Controlling has emerged with the development of management and its primary purpose in business is to support management. Over time, given the tasks it encompasses and the instruments it uses, controlling began to be applied in all parts of the company. It is closely connected and serves as a support in all departments of the company, and today, in addition to the information function, it also has a function in the planning, control and coordination of the company. In addition to playing an important role in internal liaison and coordination in business, controlling helps the company to communicate and coordinate with external actors and external factors that have an impact on the business of the company. Considering the numerous researches conducted related to controlling in the company and the professional literature, it is evident that companies achieve successful results in business through the application of controlling. Namely, controlling in the long run greatly contributes to the work of the company. Not only because it supports management in the realization of short-term and long-term goals of the company, but also because it helps all parts of the business to function smoothly and harmoniously, and this is what is the key to long-term successful business.