With the proliferation of the Internet and World Wide Web applications, people are increasingly interacting with government to citizen (G2C) eGovernment systems. It is therefore important to measure the success of G2C eGovernment systems from the citizen's perspective. While general information systems (IS) success models have received much attention from researchers, few studies have been conducted to assess the success of eGovernment systems. The extent to which traditional IS success models can be extended to investigating eGovernment systems success remains unclear. This study provides the first empirical test of an adaptation of DeLone and McLean's IS success model in the context of G2C eGovernment. The model consists of six dimensions: information quality, system quality, service quality, use, user satisfaction, and perceived net benefit. Structural equation modeling techniques are applied to data collected by questionnaire from 119 users of G2C eGovernment systems in Taiwan. Except for the link from system quality to use, the hypothesized relationships between the six success variables are significantly or marginally supported by the data. The findings provide several important implications for eGovernment research and practice. This paper concludes by discussing limitations of the study which should be addressed in future research. (Contains 4 figures and 5 tables.)