A vote in favour of Brexit would save Britain £350 million a week currently sent to the EU that might otherwise be spent elsewhere - such as the NHS - according to former London Mayor Boris Johnson and Labour MP Gisela Stuart.
It would be £350 million a week if it weren’t for the rebate, or discount, on what the UK has to pay.
The EU also spends some of the money we pay in - around £85 million a week - in the UK.
All sides agree that the economic impact of leaving the EU - good or bad - are far greater than the amount saved on the membership fee.
Below is a breakdown of Britain's yearly EU membership fee
Campaigners for remaining in and leaving the EU have clashed in a fiery debate on ITV.
On a night of fierce debate between Remain and Leave campaigners during the ITV referendum debate, which of the claims actually stacked up?
Analysis of ITV's EU referendum debate.