Concepts and methods of Lean Management are established in the production environment. The administrative areas are just beginning this journey - Lean Office and thus Lean Thinking are making their way in. Lean Reporting is a key component in this context. In addition to the fundamentals and methods of Lean Reporting, practical scenarios for implementation are presented. Usable potentials and solutions for realizing a modern and efficient reporting system are the result. Lean Reporting is therefore a topic that addresses not only the fields of Controlling and Finance but also Information Technology and Management.