Emotional intelligence is mentioned more frequently in the business environment and is considered one of the important determinants of the work performance of managers and other employees which is ultimately reflected in the success of the company. It refers to the ability to understand and regulate personal emotions and emotions from the other people. Furthermore, emotional intelligence is associated with water who leads his team towards the achievement of goals. There are many challenges that come with the position of leader, and one of them is how to arrange a larger or smaller number of people, with different characters and different individual goals, to act as one and strive for the achievement of a common goal. Each leader chooses the way in which he will approach his team, but also, each of them strives to achieve synergy and a positive working atmosphere in his team because these are only some of the determinants that lead to success. Indeed, people depend on each other, especially if it is about achieving some demanding and diflicult goal. An individual can not achieve that alone, so he must cooperate with others. For the purposes of the work, a survey was conducted that examines the leader's emotional intelligence and team performance. Based on the obtained data, it was determined that a higher level of emotional intelligence of the leader greatly affects the overall team performance. Leaders with a higher level of emotional intelligence perform their work better, direct their team members so that each of them knows their role, responsibility and goal, communication and trust are at a higher level, as well as the working atmosphere and motivation. Also, leaders with a higher degree of emotional intelligence recognize and reward individual and team successes more easily.