As the impact investing industry evolves, so do its needs for a "common language" for understanding and describing impact. The GIIN is dedicated to developing IRIS — the catalog of generally-accepted performance metrics used by a majority of impact investors — together with the industry.
IRIS is managed by the Global Impact Investing Network (GIIN), a nonprofit organization dedicated to increasing the scale and effectiveness of impact investing. The GIIN offers IRIS as a free public good to support transparency, credibility, and accountability in impact measurement practices across the impact investing industry. IRIS provides added value in the following ways:
By cataloging the most useful metrics from across the industry in one place, IRIS takes the guesswork out of which performance metrics to use.
By providing a standard common language to talk about results, IRIS makes it easier to compare investments and aggregate information across a portfolio.
Learn about the history of the IRIS catalog, and meet the stakeholders that have participated in its evolution. Learn more
Browse the IRIS catalog and pick a set of metrics that makes sense for your portfolio. Learn more
A set of guidelines produced by the Impact Measurement Working Group of the Social Impact Investment Taskforce.