Social Return on Investment (SROI) is an approach to understand and manage the value of social, economic and environmental outcomes created by an activity or an organization. It is based on a set of principles that are applied within a framework. SROI seeks to include the values of people that are often excluded from markets in the same terms as used in markets, that is money, in order to give people a voice in resource allocation decisions. SROI is a framework to structure thinking and understanding. It’s a story not a number. The story should show how you understand the value created, manage it and can prove it.