Principle purpose of this article is to Define and Discuss on Client Accounting Services. This article goes on to say that cloud-based software could automate transactional accounting functions thereby opening the entranceway for new profitable revenue streams. It used to get that client accounting services (CAS) were seen as low margin offerings not really worth the headaches and risk of costly blunders. As a result, many service providers focused their attention with higher margin audit, levy and internal control work. This is now changing due to the digitization of monetary data and proliferation associated with cloud computing.