The article describes the levels of economic convergence and, using the example of inter-segment financial convergence, presents different models of integration of economic entities aimed at improving the efficiency of their joint business and competitiveness. It is shown that the achievement of the goals of the participants in inter-segment convergence is most responsive to the option of organizing a financial conglomerate based on the model of a financial supermarket. It is substantiated that improving the efficiency of joint business is also responsible for taking into account the impact on the integration model of its participants of the main convergence factors, as well as the premise of the similarity of activities of potential convergence participants in a number of its parameters.