This project aims to develop a sustainability reporting standard with the smaller companies in mind, but comparable with established international standards. The complex transformation from a linear to a circular economy will be an important element addressed in the standard. The standard will be used by professional accountants to help their clients to measure their circularity and document this in their sustainability reports. Why is a standard crucial for the transition to a circular and green economy, you might wonder? Read more about that and other related topics in the background section.