The functions of management are in order: planning, organizing, leading, human resources management and control. The subject of research in this paper is the analysis of the planning function. The planning function is a fundamental function of management. It precedes all other functions and lays the foundation to which all other functions build. Planning aims to analyze relevant information from the past, the current situation and assess the possible development of future activities. The aim of this paper is to present the basic features of management with an emphasis on the planning function. The purpose of this paper is to establish the importance of the planning function for the overall functioning of a business organization. The theoretical concept is presented on an example from practice. The selected business entity is Kraš d.d. The most important sources of data for writing a thesis are professional books and articles in the field of management and organization. Internet sources were also used. The scientific methods used to write the final papers are: method of analysis, method of synthesis, method of classification, method of concretization, method of generalization and method of business case. The paper consists of five chapters. Along with the Introduction and Conclusion, the basic features of management and planning as functions of management are presented. The focus of the research is on the analysis of the planning function of the company Kraš d.d. Based on the research of the company, the general conclusion is that the planning function in the company is very high quality and organized. The company Kraš d.d. belongs to the category of large enterprises. Consequently, planning is extensive and requires high costs. The company Kraš d.d. recognized the importance of quality planning and continuously invests in employees so that business success is not lacking. Some of the obstacles to planning are fear of failure, crisis management, low utilization of plans, high cost of planning and more.