For many years enterprises have complained about their response burden in reporting to National Agencies, and it is necessary to find ways to reduce this burden. This is complicated, because in a modern society there is a need for even more reports and statistics. However, almost all data reporting from enterprises may be retrieved from existing data within the companies (Norwegian ELMER report 2001). For some areas it is easy to automate the reporting process. In other areas it is more complex because data exists in a variety of computer systems, and the systems are different in different enterprises. The Norwegian Government have financed a National system named Altinn for electronic reporting and communication between National Agencies and enterprises, and this system has functionality that makes it possible to combine traditional Web questionnaires with automated reporting. The Altinn system has been in production since 2003, and experiences from this are used in this chapter to demonstrate that enterprises prefer automatic reporting if this is an option. In this chapter the authors describe functionalities for combined reporting and how it reduces the response burden.