The work is a study on the role and importance of the financial planning process in the activities of the organization. Financial planning has an impact on all aspects of the economic entity through the choice of funding objects, the direction of financial resources and contributes to the rational use of labor, material and monetary resources. This paper outlines the main theoretical provisions in the field of financial planning. Particular attention is paid to the detailed characteristics of the types of financial planning. In this scientific work, the main emphasis is placed on the possibility of using simulation modeling methods in economic research, and in particular, in the development of financial planning methodology in the organization. Simulation is the only way to study systems without real experiments.The book parses the features and advantages of simulation modeling technology in economics. The toolkit for conducting simulation modeling of economic processes is considered. The book may be useful for students, graduate students and teachers of economic and financial universities, financial managers, economists.