Recent bureaucracy cost surveys identify the issue of high financial burdens on government authorities and businesses. These burdens are often caused by a large number of regulations. Therefore, the purpose of process bundling is to redesign Business-to-government processes in a way that eliminates redundant contacts, but still fulfils all reporting duties. The application of our bundling approach shows benefits by replacing similar reporting duties. One possibility to do so is to reuse available data on the business side for numerous duties. This research illustrates an approach for identifying opportunities for data reuse and thus to reduction of bureaucracy costs. The case study applies this approach for environmental reporting duties. After surveying reporting duties in Germany, similar reporting duties with overlaps concerning their content and process were selected. Finally, opportunities for data reuse were derived and implemented.