Private group the Institute for Government has produced a report: 'Implementing Brexit: Customs'

  • Assesses the costs of the introduction of post-Brexit customs checks
  • Around 180,000 traders now operate only within the EU and face making customs declarations for the first time after Brexit
  • The government estimates an extra 200 million declarations a year will be made
  • Those declarations cost 20 to 45 pounds each
  • Putting the total additional cost at 4 billion to 9 billion pounds
  • "The scale and cost of change for many traders could be significant. Government must engage with them in detail about changes, understanding their requirements and giving them as much time to adapt as possible," the report said.

Reuters reporting, more here


Extra costs imposed on trading should be likely to reduce trade, at the margin.