rather than point to lots of publications, I will point you to the Treasury report on the EU budget, which contains the figures for the UK contribution.
https://www.gov.uk/government/uploa...83344/EU_finances_2015_final_web_09122015.pdf
Each EU member pays a contribution to the budget. The way it's worked out is complex but based on GDP, population, tax take etc. if you've ever filled in a self assessment tax form you'll get the picture. This generates a figure for each year to be paid.
There is a table showing the UK contributions (p17). The figure that the UK would have to pay is the top line which would equate to about £350 million a week.
However, the UK has a rebate. Again the calculation is complex but the important thing to understand is that the rebate is applied before any money is sent to the EU. Rebate sounds like you pay money then get some back (like "cash back" on a purchase), which is probably where the misconception comes from. A better name would be discount. So the UK does not pay the top line figure to the EU, it would if we didn't have the rebate/discount, we only pay the top figure less the rebate (second line). The proof of this is buried in the annex here (p33).
A.10.4 The effect of the rebate is to reduce the amount of the UK's monthly GNI based payments to the EU budget. It does not involve any transfer of money from the Commission or any other member states to the Exchequer
Note the bit about no money changing hands.
So the honest answer to how much we send to the EU every week is closer to £250 million a week. If someone asked "what did you pay for that coat?" when you just bought a coat that was £350 full price but used a discount card to get £100 off, "£350" would not be an accurate answer even though the coat would have cost £350. The honest answer would be "£250".
Of course what the UK pays is not the same as what it would save if it left as the EU pays some money back. This is the third line and equates to £175 million a week.
Of course all of the above numbers are big, but they need to be compared to the UK government overall spend. After all a £350 coat may be a lot for you or me but to Mark Zuckerberg or a Russian oligarch, it's pocket change.
The UK Government spends (in round numbers), £14,000 million a week. In that context even the £350 million a week figure is only 2.5% and the £175million we would save is just over 1%.
To put other things in context, the UK spends about:
- £3,000 million a week on pensions
- £2,000 million a week on Healthcare (mainly NHS)
- £1,500 million a week on Education
- £860 million a week on defence
- £175 million a week on the EU
(see
http://www.ukpublicspending.co.uk/total_spending_2015UKbn for figures)