Vladimir A. Kalugin, Vadim A. Lomazov, Lilia A. Zimakova, Valeriy M. Nikitin, Elena A. Lavrinenko, Multi-Method Approach to Making Investment Decisions, International Business Management, Volume 10,Issue 26, 2016, Pages 6004-6008, ISSN 1993-5250, ibm.2016.6004.6008, (https://makhillpublications.co/view-article.php?doi=ibm.2016.6004.6008) Abstract: DCF-methods are widely used in domestic and foreign practice of making investment decisions. Classic indicators of investment projects efficiency, such as net present value, profitability index, internal rate of return, etc. are used by DCF-methods as criteria. However, in rare cases, there will be a situation where the decision is acceptable with the positions of all considered criteria at the same time. As a rule, the various criteria will give different solutions "to accept-reject". Therefore, there is the problem of choosing one leading criteria or priority of their use. In this study, we propose to use the idea of multimethod technology which is actively developing branch of optimal control theory. At the same time, in contrast to the traditional use of multimethod technology, involving the use in the process of solving the problem not the one method but the sequence of the various optimization methods, we proposed unification on the basis of DCF-methods complementation. Each of them provides additional relevant information that will increase the efficiency of investment solutions. Keywords: Discounted cash flow-methods;performance indicators of investment projects;the net present value;profitability index;internal rate of return;discounted payback period;hierarchical model of decision-making;pairwise comparison matrix;the index and the ratio of coherence;eigenvector and eigenvalue of matrix