Business process outsourcing (BPO) is a fairly new field within research in Zimbabwe. Most companies are in a bid to remain competitive within the financial services industry. The study sought to investigate the impact of BPO on sustainable competitive advantage in the financial services industry. The research adopted the positivism research philosophy which resulted in a quantitative research design. The data was analyzed using IBM SPSS bivariate correlation analysis. Raosoft calculator was used to determine the sample of 148 units from the target population of 240. The findings were that business process outsourcing has a direct relationship with sustainable competitive advantage. According to the results, innovation, highly capable IT teams and cost reduction were all a result of outsourcing of IT services. Accounting outsourcing, through the study, showed that it allowed companies to have access to expertise which are not available internally. It also showed that companies can focus on their core competencies whilst they outsource processes that can be done externally. The study suggested that the factors considered for sustainable competitive advantage are directly affected or impacted by outsourcing of services and processes. The study recommended that due diligence should be taken when implementing BPO. It also recommended that cost-benefit analysis and risk assessment be carried out before deciding on whether to outsource or not.