While the supported e-payment methods of online shops are different from the applied e-payment methods of online consumers, a B2C e-payment mismatch problem occurs and severely affects the online sales. This paper proposes a new dynamic account payment (DAP) method to resolve the mismatch problem. The main idea of DAP is that consumer can request a temporary e-payment account, acceptable to the online shop s/he is shopping, from a third-party which has pools of accounts in most e-payment systems. In this paper, DAP method is technically designed in a framework of rules, events and agents, and is implemented in two alternative approaches. Experiments have been made for evaluating the performance of the two approaches. The experiment result signifies that DAP method is feasible and efficient