The article links the EU taxonomy for sustainable activities to the issue of accounting in and by organisations. Generally, when one discusses the consequences of EU regulation, reference is made to, for example, reporting requirements. In this contribution, however, the question is raised about what it takes to construct accounting information necessary to report in line with the new regulation. The purpose of the paper is to deepen our understanding of accounting aspects related to the taxonomy. The article is empirical and written within an ongoing research project on the EU Taxonomy. A tentative conclusion is that the taxonomy, apart from implying obvious reporting requirements, implies the construction of accounting data that are highly discretionary and ‘created’ in dialogue with external stakeholders.