This study aims at identifying the factors affecting the sustianibility of E-Banking Technologies in the dusk of Demonitisation. This article does not consider the factors of adoption but instead considers the factors affecting sustainability of these technologies in the long run. The survey has been conducted in the state of Goa from both North and South Districts via a structured online questionnaires developed over google forms. The sample size for the purpose of this study has been taken considered at 1296 respondents of Goa. Further data has been analysed using descriptive and multivariate statistical tools. Factor analysis have shown existence of two clear factor in the sustainability of E banking, further confirmatory factor analysis (CFA) is used to study sustainability related to ATM, mobile banking and Internet banking. Data has been analysed using SPSS and LISREL.