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Social Return on Investment

Social Return on Investment
Also known as: SROI、Social impact return on investment

A method for organizing changes experienced by stakeholders and relating monetized value to inputs. Adjust for changes that would occur without the program and others' contributions, and disclose assumptions and sensitivity. [1]

SROI impact mapping worksheet — openRead the practical guideReferences and checked sections
Difficulty
Advanced
Cost
Medium
Duration
Planning example, not a universal standard duration: 3–6 months, including stakeholder consultation, impact mapping and financial proxy research
Content updated: 2026-10-07Source checked: 2026-10-07 (includes AI cross-checking)No documented human reviewIncludes fictional examples

How it works at a glance

Select important outcomes with stakeholders, and set quantities of change and financial proxies. Consider deadweight, attribution to others, displacement, duration and drop-off to avoid overclaiming. [1]

The usual SROI ratio divides the present value of benefits by input value. Distinguish it from net SROI, which deducts inputs. The ratio is not a cash return and is unsuitable for simple rankings of analyses with different scopes or proxies. [1]

This does not mean SROI ratios are required throughout social value measurement and management. Under SVI2026 reporting standards, ratios are optional; when reported, explain sensitivity analysis, calculation assumptions and judgments, and the ratio as a range. [2]

InputsInputsActivities / outputsOutputsOutcomesOutcomesMonetary valuationFinancial proxiesSocial value÷ inputs = SROI ratioAdjustments: Adjust for deadweight, attribution, displacement, and drop-off to avoid overstating value
Use financial proxies to monetize outcomes, make the necessary adjustments, and calculate the ratio of social value to inputs.

When to use it and when it is unsuitable

When to use it

  • When nonprofits, social enterprises or cooperatives want to demonstrate their program's social value to investors, government and society for accountability
  • When quantifying social returns to inform investment decisions in impact investing or social impact bonds (SIBs)
  • When comparing proposals for public procurement or subsidies in terms of social value
  • When identifying which outcomes generate the most value for organizational learning and strategy improvement

When it is unsuitable

  • When organizational values or ethics reject monetizing social change. Qualitative approaches such as participatory evaluation or MSC are more appropriate.
  • When the basis for monetary valuation and causal adjustments cannot be shown, yet a ratio alone is to be presented as a definitive result
  • When long-term benefits matter but reasonable evidence and uncertainty assessment for duration, decay or the counterfactual are unavailable

Participants, roles, and deliverables

Participants and roles

People experiencing change, program staff, people familiar with costs and analysts. Include the necessary perspectives and do not judge consultation quality solely by participant numbers.

Main deliverables

  • Impact map listing outcomes by stakeholder
  • Evidence supporting financial proxy selection
  • Impact adjustment worksheet for deadweight, attribution, drop-off and displacement
  • SROI report fully disclosing ratios, sensitivity and assumptions

Implementation steps

  1. Define the scope and stakeholders
    Identify the program, period and area covered and all stakeholders who benefit or bear costs. Document why the most important stakeholders, beneficiaries, were selected.
  2. Develop an impact map
    Describe inputs → activities → outputs → outcomes → impact for each stakeholder. Specify whose change each outcome represents and what changed, and set indicators and targets.
  3. Collect evidence
    Collect data to establish outcome quantities, how much changed. Combine beneficiary interviews, surveys, administrative data and other sources to gather evidence of change.
  4. Select and apply financial proxies
    Investigate proxy values appropriate to the changes experienced. Explain suitability in terms of population, units, price year, area and valuation method, and avoid double counting overlapping benefits or transfers. Do not select proxies solely because they are large.
  5. Adjust impact using four elements
    Distinguish changes that would occur without the program (deadweight), others' contributions (attribution), outcomes replaced elsewhere or for others (displacement), and decay in subsequent years (drop-off). State percentages' meanings, application order, periods and evidence; do not deduct the same influence twice.
  6. Calculate present social value and the SROI ratio
    Calculate present values of period-adjusted value and inputs. Select a discount rate with its purpose and basis stated. The usual SROI ratio is value PV ÷ input PV; net SROI is (value PV − input PV) ÷ input PV. These estimate monetized value, not cash recovered or an established causal contribution rate.
  7. Analyze sensitivity and report
    Vary key financial proxies, deadweight and drop-off rates to assess SROI stability. Fully disclose valuation evidence, adjustment assumptions and sensitivity results in the SROI report.

Strengths and limitations

Strengths

  • Built-in stakeholder dialogue promotes organizational learning alongside calculation.
  • Provides a framework to make non-market social values visible, including mental health, social connections and environmental improvement.
  • Connects the perspectives of people experiencing change with costs to organize evidence of value, but resource needs depend on scope and evidence availability.
  • Impact maps serve as evaluation plans and facilitate measurement, reporting and improvement cycles.

Limitations

  • Ratios vary with proxy suitability and selection, requiring disclosure of evidence, alternatives and important unmonetized changes.
  • Without reliable secondary data, deadweight, attribution and drop-off estimates are essentially guesses.
  • Ratios depend on populations, periods, outcome coverage, valuation and adjustments, so cannot support simple rankings of different programs.
  • Careful participatory delivery requires more time and personnel costs, imposing a high burden on small and medium organizations.

Common pitfalls

  • Do not select only proxies that inflate the ratio. Show meaning for stakeholders, suitability, alternative values and sensitivity analysis.
  • Analysts developing an impact map without stakeholder input omit the most important beneficiaries' perspectives and produce a model detached from reality.
  • Do not assume 0% deadweight without evidence. Consider comparison information and stakeholders' evidence, but do not transfer estimates from other programs without checking conditions.
  • Reporting an SROI ratio alone without assumptions, adjustments or sensitivity analysis undermines credibility and cannot withstand critical scrutiny.

Conditions of use and evidence

  • Distinguish gross from net SROI, and test sensitivity to deadweight, attribution to others and proxies. [1]
  • SROI ratios are not required throughout social value measurement and management. SVI2026 distinguishes SROI reporting with a ratio from broader social impact reporting without a mandatory ratio. The organizational Reporting Standard Part B makes SROI ratio disclosure optional. When reporting a ratio, explain sensitivity analysis, calculation assumptions and judgments, and the ratio as a range. [2]
Fictional example; not actual results

Check the formula for monetizing changes within one year

A fictional illustrative example with inputs of JPY 100,000, pre-adjustment value of JPY 250,000, deadweight of 20%, attribution to others of 25%, and displacement of 0%. Discounting is omitted because values concern the same period.

ItemCalculationValue
Adjusted value250,000×0.8×0.75JPY 150,000
Gross SROI150,000/100,0001.5：1
Net SROI(150,000−100,000)/100,0000.5：1

Common errors in judgment

Common mistake

Treating 25% attribution as the organization's own contribution and multiplying directly by 25%

How to revise

Define whether the proportion concerns others or your own organization before using it in the formula.

ReasonReversing the meaning of attribution changes the calculated result.

Common mistake

Assigning a high unit value to a sense of security to inflate the ratio

How to revise

Select evidence-based proxies comparable to value experienced by stakeholders.

ReasonSetting the ratio first leads to overstatement of value.

Organize your thinking by writing

SROI impact mapping worksheet

A practical template is available to fill in and print on A4 paper.

Open worksheet

Related practical guides

What is SROI?

Related methods

Cost-Benefit AnalysisTheory of ChangeOutcome MappingLogic ModelValue for Money

References and checked sections

  1. A guide to Social Return on Investment
    Jeremy Nicholls, Eilis Lawlor, Eva Neitzert and Tim Goodspeed / The SROI Network · 2012
    Section consulted
    Stage 4: Establishing impact / 5.3 Calculating the ratio / 5.4 Sensitivity analysis
    How it relates to the text
    Distinguish gross from net SROI, and test sensitivity to deadweight, attribution to others and proxies.
    Source checked: (includes AI cross-checking)
  2. Standards for Applying the Principles of Social Value: The Complete Set
    Social Value International · 2026
    Section consulted
    Section Three p.30: SROI reports / social impact reports; Reporting Standard Part B p.33 items 8, 8.1–8.2 / Appendix 3 p.37: optional ratio disclosure, range, sensitivity and assumptions
    How it relates to the text
    SROI ratios are not required throughout social value measurement and management. SVI2026 distinguishes SROI reporting with a ratio from broader social impact reporting without a mandatory ratio. The organizational Reporting Standard Part B makes SROI ratio disclosure optional. When reporting a ratio, explain sensitivity analysis, calculation assumptions and judgments, and the ratio as a range.
    Source checked: (includes AI cross-checking)

Editorial and checking information

Content updated: Source checked: (includes AI cross-checking)No documented human reviewIncludes fictional examplesEditorial policy and scope of checkingCite this pageReport a correction

How to cite this page

EvalCompass Editorial Team. “Social Return on Investment”. EvalCompass, updated 2026-10-07. https://evalcompass.jun-nakatani.com/en/methods/sroi/
Add the date you accessed the page. Text created by this site is available under CC BY 4.0. Quotations, external materials, and bundled fonts have their own terms of use. When reusing content, credit the source, link to the license, and indicate any changes.

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Change history
  • — Checked sources for definitions and applicability conditions, and added fictional examples, reasons for judgments and examples for every worksheet field. Revised unverified claims about history and adoption. Also reviewed existing procedures and cautions, and adjusted fixed participant counts and thresholds and generalizations about institutions. Preserved field positions, types and counts while revising fixed conditions and thresholds in the forms.
  • — Added SVI2026 Reporting Standard pp.33 and 37. Clarified ratios' optional status in broader social value measurement and sensitivity, assumptions and ranges when ratios are reported. Preserved the SROI definition and formulas, 2012 guide, worksheet and examples.
  • — Correction based on independent content review (content-check-causal). Clarified SVI2026 p.30's distinction between SROI reporting and broader social impact reporting, and the scope of optional disclosures in Reporting Standard Part B.