Labour’s Income Tax Pledges Explained

UK Government Faces Scrutiny Over Potential Income Tax Threshold Freeze Extension

The UK government is under mounting pressure as speculation grows over possible changes to income tax thresholds in the upcoming Budget. Conservative leader Kemi Badenoch has accused Labour of preparing to break manifesto promises if Chancellor Rachel Reeves extends the current freeze on income tax thresholds.

During Prime Minister’s Questions on Wednesday, Badenoch directly challenged Prime Minister Sir Keir Starmer to “confirm today that he will not break another promise by freezing income tax thresholds.” The confrontation follows weeks of media speculation about potential income tax measures in the Budget, including earlier reports that the Chancellor was considering raising headline income tax rates—a plan reportedly now abandoned.

The controversy centers on how to interpret Labour’s 2024 election manifesto pledge, which stated: “Labour will not increase taxes on working people, which is why we will not increase National Insurance, the basic, higher, or additional rates of Income Tax, or VAT.” The wording has been subject to intense scrutiny, particularly after the government increased employers’ national insurance contributions in the 2024 budget—a move Labour defended as not affecting “working people.”

While the manifesto commitment specifically mentions income tax “rates,” it makes no explicit reference to thresholds—the income levels at which different tax rates apply. This distinction has become the focal point of the current debate.

The personal tax thresholds have remained largely frozen since April 2022, a policy introduced by the previous Conservative government and currently set to end in April 2028. Reports now suggest Reeves may extend these freezes for an additional two years.

A freeze on tax thresholds creates what economists call “fiscal drag”—as wages rise with inflation, more people are pulled into higher tax brackets without their real income increasing. The effect functions as a stealth tax increase, generating additional revenue for the Treasury without changing the headline tax rates.

What makes the current situation particularly problematic for the government is Reeves’ own statements from her 2024 budget speech. She previously declared: “I have come to the conclusion that extending the threshold freeze would hurt working people. It would take more money out of their payslips. I am keeping every single promise on tax that I made in our manifesto, so there will be no extension of the freeze in income tax and national insurance thresholds beyond the decisions made by the previous government.”

This statement, repeatedly cited by opposition figures including Badenoch, appears to link the threshold freezes directly to Labour’s manifesto commitments, creating a potential contradiction if the government now chooses to extend them.

Even more concerning for the government are reports suggesting thresholds might be lowered rather than merely frozen. Though these reports have been downplayed by the Treasury, such a move would face even greater scrutiny, as it would effectively increase tax burdens on many citizens without changing the headline rates.

When approached by Full Fact, the UK’s largest fact-checking charity, the Labour Party did not clarify whether they believe extending threshold freezes would breach their manifesto commitments. Meanwhile, a Treasury spokesperson declined to comment on “speculation around changes to tax outside of fiscal events,” adding that the Chancellor “will deliver a Budget that takes the fair choices to build strong foundations to secure Britain’s future.”

The Budget is expected to be delivered next week, with the government’s decisions on income tax thresholds likely to have significant political ramifications, potentially affecting millions of taxpayers across the UK.