Assessing the management of the investment potential of international financial corporations is an important research problem, since it helps to substantiate the significance of decisions made, which increases the efficiency of international corporations in general. One of the main indicators that evaluate the quality of enterprise management is operational efficiency. The effectiveness of the enterprise means the ability of the enterprise to ensure the constant production of material (information, social, etc., depending on the segment of the enterprise) goods, in any given situation. This article touches upon the issue of assessing the effectiveness of managing the investment potential of an enterprise. The general approach to the methodology is based on a model of making a personal decision based on synthesis, while a personal decision is being the basis of any activity, regardless of the sphere of management. The article uses a methodology for assessing the effectiveness, based on the construction of a complex system. The methodology is also stipulated by: firstly, the basic laws of the subject area (basic physical, social and technical laws), and secondly, the ultimate goal of the system development. This approach is based on the system integration of the basic processes for managing the investment potential of the enterprise and represents a solution to the inverse management problem. This synthesis-based approach ensures the achievement of the goal of management. Within the process of development of the approach to assessing the effectiveness of managing the investment potential of an enterprise, a synthesis-based mathematical model was developed.