In a context of almost no formalised or systematic social impact reporting by credit unions in Ireland, the aim of this paper is to explore how credit unions in Ireland conceptualise social impact, as manifested by the views of 23 credit union managers and 11 other key informants. The extent to which Irish credit unions currently report on social activities and impact is also examined through a thematic analysis of credit union annual reports and websites. The paper also aims to examine the barriers to engagement in social impact measurement and reporting and the supports needed by credit unions to engage. The research finds that there is scope for greater understanding of the concept of social impact, how it can be measured and the importa...