Controlling as a professional support to company's management has a very important role in business. Apart from it enabling adaptation to internal and external changes, it ensures the company a certain position on the market if it is carried out well. With the growing importance of marketing in business, expansion of market and winning a well-deserved market share, a need to introduce the concept of controlling in marketing departments is growing. In tourism, competition is constantly present, therefore a thoughtful approach to planning, management, control and information process is needed. Marketing managers are exposed to increasingly complex tasks within their departments, and the introduction of the concept of control enables a clearer understanding of goals, strategies and results. The company Uniline d.o.o. provides services of travel agencies and tour operators, and expanding to global markets provided them a leading market position in the region and a significant market share within the hospitality industry. A lot of knowledge, business passion, vision and enthusiasm are woven into the development and success of Uniline, especially through the controlling's role in the company. The purpose is to define the concept of controlling and its role within the marketing department. Controlling provides marketing and other departments with a measurable component and thus enables results-oriented management and control.