Pro-Europe campaigners and tourists during the regular anti-Brexit 'rejoin the EU' protest at the junction of Parliament Street and Parliament Square in Westminster, on 18th June 2025, in Westminster, London, England.

Brexit is costing the UK up to £90 billion a year in lost tax revenue, new analysis has revealed.

The Treasury missed out on £250 million a day in 2025, according to research published by the House of Commons library.

A recent study by US think-tank the National Bureau of Economic Research found that the British economy is between 6% and 8% smaller than it would have been had Brexit not happened.

According to the House of Commons library, that resulted in between £65bn and £90bn less tax being paid to the government in 2024/25.

It also found that the average Brit is between £2,700 and £3,700 worse off as a result of the UK’s decision to leave the EU.

The research was carried out on behalf of the

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