Regulatory impact analysis (RIA) is the systematic, structured, evidence-based analysis of the prospective impacts of a proposed policy measure against possible alternatives. This report takes stock of current RIA developments and discusses potential opportunities and challenges of the implementation of RIA in the Information and Communications Technology (ICT) sector. Several examples of application of RIA in the ICT sector are illustrated, and a check-list for regulators are presented at the end of this report, with the aim to providing advice to ICT regulators on how tosuccessfully use the RIA tool in their daily regulatory decisions. The report also examines how regulatory impact assessments (RIA) can make a difference in shaping sound policy and decision-making processes and regulation in the ICT sector.