The study explores the adoption of an electronic government (e-government) system called online PAN card registration system (OPCRS) in context of India. The study validates the extended decomposed theory of planned behaviour (DTPB) to understand the impact of some of its factors on the citizen’s intention to adopt this system. The proposed research model is validated using the data collected from 377 respondents from six selected cities covering all different locations of India. The data is analysed using AMOS 22.0. The empirical findings of the proposed research model indicated the significant relationships of all proposed hypotheses. The study also provides its limitations, future research directions, and implications for theory and practice toward the end.