Importance. The limited resources inherent not only in the Russian economy, but also in the global economic system, lead to the need to form new forms of economy and methods of managing them.Project management emerged as a response to the problem of limited resources, since its essence is to direct material, financial and labor resources to clearly defined goals within a specified timeframe. Thus, the application of the project approach in the management of an economic entity allows you to create fundamentally new types of activities, develop and implement innovative products, and implement progressive methods in production activities. However, the functioning of this management system is impossible without information support of the necessary level of detail for making effective management decisions. The development and implementation of the management accounting system provides an opportunity to create a relevant information base for the implementation of projects in accordance with the established time, resource and quality constraints. It should be noted that management accounting tools that are effective in process activities are not always able to demonstrate similar results when implementing the project approach. In this regard, the research aimed at adapting budgeting to project-oriented activities is an actual and practically significant task that can increase the competitiveness of domestic economic entities.Objectives. Justification of the relevance of budgeting as a key element of management accounting in project-oriented activities, highlighting the key features of building organizational and financial structures in process and project activities.Methods. In the process of studying budgeting as the main element of the management accounting system in project-oriented organizations, methods of logical, statistical analysis, as well as Generalscientific methods of cognition were used.Results. The article presents the organizational and financial structure of the economic subject from the point of view of process and project activities, and suggests the cash budget of the projectand current (process) production, which is necessary for the formation of an information base that allows for operational and effective management of the business entity.Conclusions and Relevance. The main task of all organizations, regardless of the volume, type of activity and form of ownership, aimed at maximizing profits, is the optimal consumption of resources, which is subject to management at the planning stage, which requires the development of an objective and flexible budgeting system that meets modern business conditions. The main purpose of management accounting is to generate information about costs in the context of the financial and organizational structure of an economic entity.