You will need to provide your IOSS registration number in the ‘Importers Reference Number’ field at the time of lodgement or label generation. We will then transmit this number for customs processing and VAT collection and processing via the European Union (EU) IOSS system.
Your IOSS number is 12 digits long, starting with IM followed by 10 numbers (e.g. IM1234567891). Please ensure you enter the number correctly. We do not validate the data, and the EU IOSS system will only recognise IOSS numbers that are in the correct format.