Lib Dems Pledge £17bn Tax Cuts Tied to EU Single Market Return

Sir Ed Davey has pledged a £17bn package of income tax cuts for millions of workers, funded entirely by the economic boost he claims would come from the UK rejoining the EU single market and customs union.

Addressing the Liberal Democrat conference in Brighton, the party leader said a Lib Dem government would raise the annual tax-free personal allowance from £12,570 to £15,000 and lift the 40p income tax threshold from £50,270 to £56,000. He claimed the plan would deliver a £680 cut for "most taxpayers."

The cuts would not take full effect until the fifth year of a Lib Dem government — potentially up to eight years away. The party would unfreeze personal allowances in year two, allowing them to rise with inflation, before introducing the larger reductions in year five, once the claimed benefits of closer EU trading had materialised.

The pledge rests on a demanding timeline. It depends on the party negotiating a closer trading arrangement with the EU within just 12 months of taking office. The Lib Dems say their "growth and defence pact" with the EU would generate an extra £27bn, based on research by consultancy Frontier Economics.

The announcement drew sustained applause from Lib Dem MPs and activists. It also positions the party directly against Reform UK, which promised at its own conference earlier this month to raise the income tax personal allowance to £15,000 within 100 days of winning power.

Sir Ed drew a sharp distinction. "The difference between us and Reform," he told delegates, is that "their tax cut is paid for through cruelty." He added: "Reform's figures show they'd pay for it by ripping £22bn of crucial support away from disabled people." Reform has estimated its narrower policy — raising the income tax threshold alone — would cost £21bn by the fifth year.

The IFS pushes back

Stuart Adam of the Institute for Fiscal Studies told BBC Verify the Lib Dem package would cost "much more" than the £17bn quoted by the party. The independent scrutiny underscores the fiscal risk at the heart of a plan whose funding depends on speculative gains from EU re-entry.

The tax freeze backdrop gives the pledge its political force. The Conservatives froze the £12,570 allowance in 2021, pulling more workers into paying income tax. Labour has so far resisted calls from trade unions and some of its own MPs to unfreeze it. Under the Lib Dem plan, the starting point for paying employee National Insurance would rise to £15,000 as well.

Explaining the 40p threshold pledge, Sir Ed argued that a growing number of workers were being pulled into a band originally designed for the wealthy. "A tax band designed for stockbrokers is now holding back teachers and nurses," he said. "That's not fair, it's not right."

A pitch to Tory heartlands

Repositioning the Lib Dems as a tax-cutting party targets voters in traditional Conservative strongholds — a strategy that delivered gains at the last election. Sir Ed attacked Tory leader Kemi Badenoch over her policy shifts on climate change and human rights law, telling the Brighton audience: "Millions of decent, moderate Conservative voters are getting her message, and they're turning away – increasingly, to us."

The speech opened with an assault on Nigel Farage. Sir Ed stopped short of calling Reform fascists, but linked the British fascists of the 1930s to "thugs, in black shirts and balaclavas" — a reference to recent protests in Dover and Portsmouth. "This is a far-right movement that is given oxygen, and heat, and fuel by politicians and parties who claim to be serious contenders to lead our country," he said.

The Lib Dem leader arrives at this conference under pressure. His party sits fourth or fifth in national opinion polls, and critics within his own ranks have demanded bolder policies.

Coalition questions unanswered

Lib Dem sources refused to say whether the income tax plan would be a condition of joining a coalition with Labour or another party, saying only that the party's aim was to maximise its MP count. Sir Ed has ruled out a coalition with Reform UK and dismissed suggestions of a deal with the Conservatives, as struck in 2010.

He also criticised Prime Minister Andy Burnham for failing to commit to rejoining the EU single market, which the Lib Dems pledge to do in their first year in government.

On artificial intelligence, Sir Ed warned that "handled badly, it concentrates more power in fewer hands than at any point in human history." He said Burnham's AI partnership with US President Donald Trump "doesn't come close to meeting the scale of this threat" and called for "a global treaty to press pause on super-intelligent AI now," proposing "a new International AI Safety Agency - like we have for nuclear - to stop anyone from developing this technology recklessly."

For business, the immediate signal is less about tax arithmetic than trade policy: the Lib Dems have now made EU single market re-entry the explicit fiscal foundation of their economic offer, with £27bn in claimed growth attached. Whether Brussels would deliver a deal within 12 months is the assumption on which the entire £17bn promise rests.