So far, business models have been investigated in the context of eCommerce focusing on economic issues but they do not consider the viewpoints of authorities embarking on public private partnerships for citizen services. This paper describes our modelling method BMeG that is dedicated to the planning of business models for eGovernment services. BMeG allows one to model options of value chains with various perspectives including advantages and disadvantages with impacts on policies. BMeG depicts the added value of potential partnerships and thus supports authorities to decide on alliances for public private partnerships or other financing models for eGovernment services.