Social Return on Investment

Social Return on Investment
Name	Social Return on Investment
Abbreviation	SROI
Type	Evaluation framework
Introduced	2000s
Related	Cost–benefit analysis, Impact evaluation, Social impact bonds

Social Return on Investment Social Return on Investment is a framework for measuring value created by interventions that affect social, environmental, and economic outcomes. It translates changes from programs and projects into monetary terms to compare benefits and costs and to inform decisions by funders, policymakers, and practitioners. The approach has been adopted by NGOs, development banks, philanthropic foundations, and public agencies for accountability, strategy, and financial innovation.

Overview

SROI synthesizes ideas from Cost–benefit analysis, Program evaluation, Social impact bonds, Triple bottom line (TBL), and Impact investing to create a monetary estimate of social value. Early methodological development drew on work by the New Economics Foundation, Office for National Statistics (UK), and practitioners associated with The King’s Fund and Nesta. Adoption has spread through networks such as the World Bank, United Nations Development Programme, Organisation for Economic Co-operation and Development, and large foundations including the Bill & Melinda Gates Foundation and the Ford Foundation.

Methodology

Standard SROI follows steps similar to Logic model and Theory of change approaches: stakeholder mapping, outcome identification, evidence gathering, valuing outcomes, establishing attribution and deadweight, and calculating benefit–cost ratios. Practitioners draw on techniques from Cost–benefit analysis, Randomized controlled trial, Difference-in-differences, and Contribution analysis. Valuation often employs proxies from markets such as Willingness to pay studies, shadow pricing methods used by the National Institute for Health and Care Excellence (NICE), and external value sets produced by organizations like Social Value UK and the Global Impact Investing Network. Adjustments for factors like discounting reference standards from the Intergovernmental Panel on Climate Change and treasury guidance such as the UK Treasury Green Book.

Applications and Sectors

SROI has been used across sectors by entities including the United Nations, International Monetary Fund, European Investment Bank, and national agencies like the Department for International Development and USAID. In health, researchers align SROI with frameworks from World Health Organization and Centers for Disease Control and Prevention; in education, with standards from the Institute of Education Sciences and the Carnegie Corporation of New York; in environment, with methodologies from the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services and Convention on Biological Diversity. Philanthropic applications feature in portfolios of the Gates Foundation, Rockefeller Foundation, and Open Society Foundations; corporate social responsibility use appears in reports by Unilever, Microsoft, and Google.

Criticisms and Limitations

Critiques of SROI are voiced by academics and institutions including scholars affiliated with Harvard University, London School of Economics, Massachusetts Institute of Technology, and commentators at The Economist and Financial Times. Common objections highlight subjectivity in selecting proxies, risk of double-counting, sensitivity to discount rates promoted by Stern Review debates, and problems translating qualitative outcomes into monetary units—a concern shared with Cost–benefit analysis critics. Methodological limits include difficulties with long-term attribution in contexts studied by International Labour Organization and United Nations Educational, Scientific and Cultural Organization, and legal or ethical issues noted by litigators in cases involving International Criminal Court precedents.

Measurement Standards and Tools

Standards and guidance bodies include Social Value International, Social Value UK, Global Reporting Initiative, and the International Organization for Standardization which inform measurement choices alongside institutional investors such as BlackRock and European Bank for Reconstruction and Development. Tools and platforms that support SROI calculations integrate data practices from Microsoft Excel, statistical packages like R (programming language) and Stata, and data visualization systems from Tableau Software. Complementary standards include the Sustainability Accounting Standards Board, Task Force on Climate-related Financial Disclosures, and outcome metrics from the Global Impact Investing Network's IRIS+.

Case Studies and Evidence

Notable case studies and evaluations using SROI methods have been published by the World Bank, OECD, Nesta, Big Lottery Fund, and research centers at University of Oxford, University of Cambridge, and London School of Economics. Examples include analyses of social enterprises supported by Ashoka, homelessness interventions funded by the Joseph Rowntree Foundation, and health programs evaluated by International Rescue Committee and Médecins Sans Frontières. Outcome reports by municipal actors such as Greater London Authority and national pilots by the UK Cabinet Office and Government of Canada illustrate mixed results: some studies report high benefit–cost ratios while systematic reviews by teams at Cochrane Collaboration and RAND Corporation underscore variability driven by methodological choices.

Category:Evaluation methods