The main purpose of this study is to examine how customer retention is affected by the factors of customer retention. A structured questionnaire was distributed to banking customers based on demographics (gender, age, marital status, education, occupation and, income level) in National Capital Territory. Data was successfully collected from 500 respondents who have either saving account or current account or both. Respondents’ opinion on 20 items related to customer retention was obtained. Factors of customer retention were categorised into four main groups i.e. tangible, reliability, responsiveness and assurance & empathy Factors. Further multiple-regression analysis was used to measure the factors of customer retention and their impact on customers’ retention decision. After multiple-regression it was found that ‘Within Timeframe Service Delivery’, ‘Sincere Efforts in Solving Customer Problems’ and ‘Accepting & Resolving Faults’ are the most important factors which affect customers’ retention intention.