The diffusion of impact assessment (IA) has significant implications for recruitment and training worldwide. New skills and professional cross-fertilization are increasingly required in regulatory management. The chapter outlines recent trends in the nature and organization of IA-related capacity-building programmes. It does so by considering the demand and supply sides of the IA market. The chapter concludes that resources and duration of training are key. Structuring training via modules might be an efficient way to develop context-specific solutions that integrate IA into the existing organization and bureaucratic culture of the beneficiary administration. Knowledge utilization and extrapolation approaches are presented as promising avenues in this respect. There is, therefore, margin for improving the type and quality of the training delivered. It is important that governments are fully aware of why they intend to introduce or upgrade their IA system before embarking on capacity-building scenarios – a question that regrettably sometimes is not even asked.