Purpose-This study aims to identify and examine the most important factors that could predict the Saudi customer's continued intention towards adoption of mobile banking. Design/methodology/approach-The proposed conceptual model was based on the Technology Acceptance Model (TAM) and Task-Technology Fit (TTF) model. This is also expanded by considering two additional factors: perceived privacy and perceived security. By using a self-administered questionnaire, the data was collected from a convenience sample of Saudi banking customers from different parts of Saudi Arabia. Findings-The main results based on structural equation modelling analyses supported the impact of perceived privacy, perceived security, perceived usefulness, and task-technology fit on the customers' continued intention to use mobile banking. Research limitations/implications-The moderation influence of the demographic factors (i.e. age, gender, income level, educational level) was not tested. The data was also collected using a self-report questionnaire; however, it would be more accurate to utilise more statistics from the bank database about the users of m-banking. Originality/value-This study represents a worthy attempt to test such novel technology (mbanking) in the KSA where there is a scarcity of literature. A considerable theoretical contribution was also made by integrating the TTF model with the TAM in addition to consider privacy and security in one single model. Moreover, considering both perceived privacy and security in the current model creates an accurate picture about the adoption of mbanking especially as there are a limited number of m-banking studies that have considered privacy and security alongside the TTF model and TAM in the same model.