Ed Davey Promises £17bn Income Tax Cut Linked to EU Market Return
Ed Davey promised a £17bn income tax cut if the Liberal Democrats are elected, unveiling the plan in a speech to the party's annual conference in Brighton. The announcement was reported on 22 September 2026, and the party presents tax reduction as its central election offer. The Guardian
What the plan would do
The proposal would eventually lift the tax-free personal allowance, the amount you can earn before paying income tax, to £15,000. It would raise the threshold for the 40p higher rate by about £6,000. A smaller increase would apply to the 45p additional rate, currently paid on income above £125,000.
The timetable is long. The cuts would take effect only in the final year of a parliament, potentially as late as 2034, at an estimated cost of £17bn. In the earlier years, thresholds would rise in line with inflation, which means they would keep pace with prices rather than fall in real terms.
How it would be paid for
Davey linked the funding directly to Europe. The party says the cuts would be paid for by extra growth from rejoining the EU's single market, the shared set of trading rules, and customs union, the agreement that removes tariffs between members. It cites a report by an independent economics consultancy that calculates an EU deal could generate 0.5% growth in the first fiscal year alone.
Why Davey says it is needed
The argument about fiscal drag was central to the pitch. Fiscal drag happens when tax thresholds stay flat while wages rise, pulling more people into higher rates. Davey said that 30 years ago 2 million people paid the 40p higher rate, compared with 9 million now. The same £15,000 allowance has been pledged by Reform UK. The Liberal Democrats previously dropped a pledge to raise income tax by 1p, a commitment abandoned in September 2023, and Davey said in September 2024 that he would like to see inheritance tax reformed so the better-off pay more.
The conference speech paired tax policy with two wider commitments. Davey said the party will focus on tax cuts and Europe, according to advance briefing reported on 21 September. The Independent The party published a press release titled "Davey: Vote Liberal Democrat to cut your taxes" on 20 September 2026. Davey also proposed a global, nuclear-style non-proliferation treaty to halt development of super-intelligent AI.
The broader context here is the way fiscal policy and EU alignment are joined into one transaction. Uprating by inflation preserves thresholds in real terms through most of a parliament, while the larger cut is held to the final year. That structure limits near-term costs and places the revenue burden on a growth dividend that has yet to be negotiated, let alone realised.
Looking at what this means for party competition, the timetable and the funding claim do much of the political work. A pledge dated to the end of a future parliament puts attention on costing assumptions, particularly the first-year 0.5% growth effect tied to single market and customs union re-entry. The overlap with Reform UK on £15,000 creates a direct comparison on personal allowances, while the Liberal Democrats point to staged delivery and parallel increases to higher and additional-rate thresholds. The AI non-proliferation proposal adds an international institutional dimension, signalling interest in treaty-based governance beyond the domestic fiscal debate.
