Sir Keir Starmer has failed to rule out extending so-called “stealth taxes” – as well as the introduction of a wealth tax – as his government struggles to balance the books following his recent U-turns. The prime minister reiterated that Labour would stick to its manifesto pledge and ruled out increases to income tax, VAT and national insurance, but he did not confirm whether the government was planning to lift the freeze on income tax thresholds in 2028.Sir Keir and chancellor Rachel Reeves are seeking to find billions of pounds in savings after the government’s recent U-turns on welfare and winter fuel payments left a black hole in the nation’s finances, while a report out this week from the Office for Budget Responsibility (OBR) gave a damning verdict of the state of Britain’s “vulnerable” public finances.Asked by Conservative leader Kemi Badenoch whether he could guarantee he would keep the manifesto pledge of not increasing income tax, VAT or employee national insurance contributions, Sir Keir gave a one word answer: “Yes!”But when she asked if it is still the government’s policy to unfreeze income tax thresholds, Sir Keir said: “No prime minister is going to write the budget in advance, but we are absolutely fixed on our fiscal rules”.At the last budget, Ms Reeves promised to end the freeze on income tax thresholds after 2028. But if it were extended to the end of the parliament it could £9bn-10bn a year, according to the Institute for Fiscal Studies (IFS) think tank, as workers are dragged into higher tax bands as earnings rise. The think tank says extending the freeze would mean an additional 400,000 people would be eligible to pay income tax, while another 600,000 would be pulled into higher and additional rates by 2029-30.Pressed on the issue after PMQs, the prime minister’s spokesperson repeatedly refused to say whether the government plans to go back on the chancellor’s promise to unfreeze tax thresholds.( More