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Sustainable Finance

Measuring what matters: making impact claims credible

Measuring what matters: making impact claims credible

Impact credibility rests on clear indicators, honest baselines and transparent limitations. A practical guide to reporting impact that stakeholders can trust.

As impact investment grows, so does scrutiny of impact claims. Stakeholders increasingly ask not only what outcomes are reported, but how they were measured, over what period and with what limitations.

The building blocks of a credible claim

  • Indicator: precisely defined, so that it means the same thing to every reader.
  • Baseline: the starting position, and when it was measured.
  • Target: the intended outcome, with a date.
  • Actual result: what has been achieved as at the reporting date.
  • Evidence source: the records, surveys or verification that support it.
  • Attribution: what can reasonably be attributed to the project.
  • Limitations: the assumptions, gaps and estimation methods involved.

Never blur targets and results

The most common credibility failure is presenting projections as achievements. A simple discipline — labelling every figure as a target, in progress, achieved or independently verified — prevents it.

Impact is not a slogan. It is an intentional and measurable part of how opportunities are selected, developed and monitored.
StoneZero Insights Team

StoneZero Investment Limited — perspectives on impact investment, sustainable finance and enterprise development.

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