Brexit Is Costing the UK Up to £90 Billion a Year in Lost Tax Revenue
A recent analysis by the House of Commons Library suggests that Brexit is costing the United Kingdom as much as £90 billion a year in tax revenue, casting a long shadow over the country’s public finances and economic outlook. (The Independent)
This figure arrives at a sensitive moment for the government, as cost-of-living pressures continue and the forthcoming Budget is expected to include tax rises and spending constraints. The magnitude of the loss raises pressing questions about whether the economic consequences of leaving the European Union have been fully accounted for — and what the government must now do to repair the shortfall.
How the Losses Were Calculated
The analysis estimates that Britain’s GDP is between 6 % and 8 % smaller than it might have been had the UK remained in the EU. (The Independent) Using these productivity and growth shortfalls, the House of Commons Library projects that the resulting tax revenue foregone could reach up to £90 billion annually. That sum takes into account lower corporation tax receipts, reduced VAT and income tax from fewer jobs and investment, and weaker trade performance.
Beyond the headline number, the average Briton is estimated to be £2,700-£3,700 worse off in terms of GDP per person.
Why It Matters for Public Services and Taxes
A shortfall of this magnitude has wide-reaching consequences. For one, it places greater pressure on public services. When the Treasury receives less revenue than anticipated, budgets get tighter — meaning schools, the NHS, transport and local authorities may face even more severe constraints.
It also forces policymakers into difficult trade-offs: raise taxes, cut services or increase borrowing. The enormous hole in the public finances suggests the government’s ability to protect existing spending while delivering on new priorities is severely constrained.
In practical terms, Britons may see rising tax bills, slower public service improvements, or both.
What’s Driving the Revenue Loss?
Several inter-linked factors help explain why Brexit has eroded so much income. Firstly, leaving the EU has created non-tariff barriers and regulatory friction, increasing costs for British businesses exporting or importing goods. Less trade means fewer jobs and less taxable income.
Secondly, uncertainty and investment shifts away from the UK have weakened productivity growth — a key driver of tax revenue. If businesses invest less, hire less, or locate operations abroad, the government collects less.
Thirdly, the decline in economic dynamism means fewer opportunities for tax-yielding growth. Simply put: if the economy grows slower, tax receipts grow slower. The analysis suggests that the tax shortfall is a direct consequence of this slower growth path.
The Political and Economic Fallout
The release of this analysis comes at a sensitive time politically. The government is under intense pressure to demonstrate fiscal responsibility and economic recovery. Critics argue the findings serve as proof that the cost of Brexit has been deeply underestimated.
Some voices within politics are calling for renewed discussions with the EU — either to ease trade friction or revisit aspects of the UK’s relationship — to recover lost ground. (The Independent)
However, any moves to revive ties with the EU would provoke debate within parties and among voters who supported Brexit for sovereignty and independence reasons. The political stakes are high.
What Can Be Done?
Fixing a £90 billion annual loss isn’t straightforward, but analysts suggest several routes:
- Negotiating improved trade agreements with the EU and other partners, reducing friction and boosting exports.
- Incentivising investment in high-productivity sectors, so the UK economy becomes more dynamic and tax-yielding.
- Reforming tax-and-spend policy to target growth-driven revenue rather than relying solely on tax-increases.
- Addressing structural problems in education, skills, infrastructure and R&D, so long-term productivity can recover.
None of these are quick fixes — and all involve either fiscal risk, political compromise or both.
Final Thought
The £90 billion figure is more than just a number. It represents the scale of the challenge facing the UK as it grapples with the longer-term consequences of leaving the EU. For ordinary Britons, it means slower wage growth, higher taxes and fewer public services. For the country, it means a lost decade of opportunity.
The question now isn’t just about whether Brexit was a good idea — that debate has moved on — but whether the UK can recognise the cost, adapt quickly, and rebuild economic momentum before the hole becomes unmanageable.
