Mexico has made significant progress in expanding the capabilities of e-government services available for citizens. According to the 2012 UN e-government report, Mexico ranks 28th among the 179 UN member states, and 3rd in Latin America in terms of overall development of online services. However, to date, little is known about the demand side of online services. This paper investigates the factors that influence the adoption of online services in Mexico. Kumar et al. model is used to support the hypotheses proposed in this paper. An online survey was used to collect data on citizens' perceptions about e-government. The results will be analyzed using multiple regression analysis.