Quote Originally Posted by mygiddypant View Post
"In October 2021, the UK government's Office of Budget Responsibility calculated that Brexit would cost 4% of GDP per annum over the long term. 4% of 2021 UK GDP is the equivalent of a £32 billion cost per annum to the UK taxpayer. After rebates, the UK's EU membership fee in 2018 was £13.2 billion."

That's from Wikipedia. Will that do?
Tax doesn't fund government spending .