Impact is the new frontier in socially responsible investing. Whilst socially responsible investment focuses primarily on companies with the best environmental, social and governance (ESG) practices, the time has come to construct funds capable of demonstrating their positive impact, and thus that fully meet their commitment to investors. With this joint guide, developed by comparing the practices of sophisticated professionals in the listed and unlisted segments, France Invest and the FIR hope to avoid succumbing to empty marketing rhetoric and impact washing. This booklet is the result of two years of common work between the two associations.