Reform UK promised to increase the tax-free personal allowance to £15,000 if it wins the next general election. ^[1] Reform estimates that 2.9 million people would stop paying income tax altogether under the new policy. ^[2] Reform estimates the policy would cost £17.7bn in the first year and rise to £21bn by the fifth year. ^[3] Reform UK plans to raise the tax-free personal allowance from £12,570 to £15,000 in their first budget within the first hundred days of a Reform government. ^[4]