The Payment Systems Regulator (PSR) has issued policy statement PS25/1, which outlines its approach to conducting cost-benefit analyses (CBAs) for regulatory interventions in the payment systems sector. The goal is to promote better outcomes for payment system users. The PSR's CBAs adhere to common principles and best practices, with methodologies tailored to specific cases based on factors such as data availability and the nature of costs and benefits. The analysis process includes identification, qualitative and quantitative assessment, and monetisation of impacts, focusing on the overall balance of impacts rather than single-point estimates. The CBA framework is designed to ensure that regulatory decisions are based on robust, evidence-based analysis, promoting better outcomes for users.