Abstract: A method for predictive modeling of merchant attrition in a payment network. The method includes registering a plurality of merchants in the payment network, each merchant associated with at least one merchant acquirer; standardizing merchant registration information for the plurality of merchants to identify duplicate entries; assigning a unique merchant identification to each merchant; receiving transactional data from at least one merchant, the transactional data including at least a transaction amount and a transaction date; building a time series data set for the merchant from the transactional data; determining a merchant category for the merchant based on the primary industry group in which the merchant operates; and calculating a probability for the merchant to switch to a different acquirer based on one of a plurality of attrition models.