There have been uncertainties to what a performance audit generates, as audit impact have an inherent causality problem. Prior studies present several factors that affect perceived audit impact, but the generalizability is low and not applicable in a Swedish context, thus this thesis contributes to the development of the existing knowledge by investigating audit impact. This thesis consists of a sample of three performance audits which are investigated through a mix methods approach with a total 23 interviews and multiple public documents, analyzed with earlier studies and theories as a benchmark. The findings indicate that audit impact is complex where several factors affect audit impact, this thesis indicated that usefulness and quality of the performance audit are the main factors that affects perceived audit impact. There are also additional effects by the performance audit that fall outside of the audit impact definition. Due to the small sample size and the fact that performance audits often are regulated by local laws one must be careful in what context these findings are solely applied in another context.