An enterprise business planning system includes a server to execute an enterprise planning session for a set of enterprise contributors in accordance with an enterprise model, wherein the enterprise model defines hierarchically arranged nodes and associates the enterprise contributors with the nodes. The system further comprises a web browser executing on a remote computing device of one of the enterprise contributors to communicate contribution data between the remote computing device and the server, and an inline compression module executing on the remote computing device. The inline compression module automatically compresses outbound communications from the web browser to the server, and automatically decompresses inbound communication received from the server and forwards the decompressed inbound communications to the web browser.