This chapter develops the process of calculating the monetary value of social value based on the “Polyhedral Model”, which consists of six steps. In step one the process begins with the identification of the working team and the setting of the timetable. Step two involves work on the strategic and management documents of the organization, ending with the preparation of a consensus-based stakeholder map. Step three focuses on identifying the value variables perceived by stakeholders, mainly through phenomenological interviews, and ends with the preparation of the Value Variables Matrix (VVM) for the organization. Step four identifies the outputs generated by the organization for each value variable and seeks potential proxies which, after a process of fuzzy calculation, enable reference values to be identified for the respective outputs. Step five entails the quantification of the calculations as per the “Polyhedral Model”, making it possible to see the value generated for each stakeholder, the shared value and the consolidated value in numerical and graphic forms. The sixth and final step is a review of the whole process and the proposal of improvements for the next calculation cycle, which generally coincides with the next financial year.