Electronic government, or e-Government, is the use of information and communication technology in the public sector. As a research field, it is characterized as multi-disciplinary with heritage from both the information systems and public administration fields. This diverse background may be beneficial, but it may also result in a fragmented theoretical base and conceptual vagueness. This paper applies decision theory to e-Government to tie a number of theoretical and practical concepts together. In particular, five concepts from decision theory (i.e. objectives, stakeholder inclusion, weighting and resource allocation, risk analysis, and outcomes assessment) are compared with counterparts in e-Government. The findings have both theoretical and practical implications. First, they add to and unite e-Government theory. Second, practical methods for operationalizing the theoretical concepts are proposed. This operationalization includes using a holistic approach to e-participation throughout decision processes.