The FT has a fairly useful guide to the economics of Brexit, looking at three different scenarios:

  1. Booming Britain
  2. Troubled Transition
  3. Disastrous decision

The FT’s overall verdict:

FT verdict
With clear and easily specified economic risks in the short and medium- term, Brexit does not easily pass any cost-benefit analysis. But supporters of the EU should be wary of making overconfident claims, since trade is only one driver of growth and prosperity.