Studying and analyzing quality attributes is increasingly important for thosewho are constantly looking for customer satisfaction and a continuous evolution of theproducts and services offered.Cost and Performance are attributes of important qualitiesfor any application and when it comes to web services, or better, the composition ofthese services as well, since, from the planning of the services choices, one can findthe best for the composition, in the case of this work have a low cost and low responsetime (performance).This work aims to propose a way to manage financial cost andperformance through techniques that are used, in the life cycle of the composition, moreprecisely in the planning phase, for this was analyzed the techniques related to themanagement of the composition and adapted a algorithm that calculates financial costand performance. After this calculation, it is possible to know which best service to usein the composition according to the chosen attributes, thus facilitating the managementof attributes in a services composition
