Switzerland has signed and ratified the 1979 Geneva Convention on Long-range Transboundary Air Pollution (CLRTAP) and annually submits its emission inventory. On behalf of FOEN, INFRAS has revised and updated the Informative Inventory Report (IIR) for the present submission 2015. The report documents the methodologies applied and the resulting national emissions from a large range of air pollutants for the years 1990-2013. Following the updated reporting guidelines under the convention, the structure of the report as well as methodological approaches has been revised substantially for this submission.