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Brexit – Northern Ireland Protocol: prefix ”XI” needed in your VAT number

If you are trading and make transactions under the protocol, you’ll need to:

  • put an “XI” prefix in front of your VAT number when communicating with an EU customer or supplier (your invoices will show an XI number ahead of your VAT number – for example, XI 123456789 – instead of GB)
  • complete an EC sales list when selling goods from Northern Ireland to VAT registered customers in the EU


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