It was confirmed as part of the Autumn Budget that the Income Tax thresholds will continue at their current levels for a further three years, extending the freeze until April 2031. This means that most tax allowances are to remain frozen for 2026-27 and beyond.

As a result, the personal allowance will stay at £12,570, while the higher rate threshold will remain at £50,270 for taxpayers across most of the UK (with different thresholds applying in Scotland). National Insurance thresholds will also remain fixed over the same period.

Keeping these thresholds unchanged means that many taxpayers will gradually pay more tax as their earnings increase over time. This effect, commonly known as fiscal drag, occurs when wages rise but tax bands do not. As incomes grow due to inflation or pay increases, a larger portion of earnings becomes taxable, and more people move into higher tax brackets.

In practical terms, the continued freeze is likely to push increasing numbers of taxpayers into the 40% higher rate band and, for some, the 45% additional rate band. Others who previously earned below the personal allowance may also begin paying Income Tax for the first time. Although tax rates themselves remain unchanged, the overall tax burden rises as more income becomes subject to tax.

Fiscal drag is influenced by several factors, including government policy on tax thresholds, inflation levels and wage growth. In periods of rising wages or high inflation, the impact of frozen thresholds becomes more pronounced. For taxpayers the impact of fiscal drag effectively operates as a stealth tax over time.