Business Rules Management (BRM) is increasingly being applied in the governmental context. However, currently, many of those governmental institutions apply different BRM processes, but are expected to work together in their task of delivering products and services to citizens and companies in the Netherlands. An initiative from the Dutch government was started with the goal to investigate currently applied processes and develop a BRM reference process to promote cooperation. This paper elaborates upon the process of comparison of currently applied BRM processes and development of the BRM reference process for the Dutch government. The resulting BRM reference process consists of seven main processes with twenty sub-processes and a common vocabulary which can guide (Dutch) governmental organizations to design and implement their BRM solution as well as to achieve better cooperation due to increased commonality. In terms of future research, the emphasis should lie on more thorough validation, using quantitative research methods, but we argue that other industries should be explored as well.