Social impact in social entrepreneurship and innovation is important but can be tricky to measure. A study in Sweden interviewed experts to understand why measuring social impact matters and what challenges exist. The findings show that proving and measuring social impact is crucial to show that social initiatives are making a positive difference and to address complex social problems effectively. Challenges include difficulty in measuring impact, separating results from impact, and ensuring that social initiatives are prioritized and supported by the public sector. The study aims to clarify the concept of social impact to help improve social entrepreneurship and innovation in Sweden.