Project cost management includes all the processes needed to ensure that the project team meets all its obligations in accordance with the adopted budget. Successful work on the entire project should take into account the organizational structure and environment of the project and knowledge in the field of project implementation, standards and legal framework, as well as general knowledge of business management and interpersonal relations. The project management structure can correspond to a simple and complex list of tasks of the company whose purpose is to perform the project. In any project, cost and cost management are a very important component. In this way, the planned resources should be used as optimally as possible in order to achieve the goal without hindrance. The more detailed the project implementation plan, the greater the chance that the costs will be calculated more correctly. The cost of the entire project then arises from the sum of all the individual costs of the phase. The advantage of such an approach to implementation is that the costs for each work package can be monitored simultaneously while the project is ongoing.