The aim of this article is to describe client relationships in online payment services. Client relationships management is the ensemble of techniques, processes, and systems that allow you to develop clients for a lifetime. One of the leading reasons why on-line payment is getting a growing number of popular is so it takes much less hard work from customers, hence providing them using a secure and smooth online payment experience is really a common interest for the payment service provider and also the merchant. Technology and human expertise are equally vital to make certain all that.