Frozen Income Tax Thresholds to Pull One Million More Workers into Higher Brackets as Fiscal Drag Accelerates

The United Kingdom’s tax landscape is set for a significant shift this year as nearly one million additional citizens are projected to either begin paying income tax for the first time or transition into higher tax brackets. This migration into higher tax liabilities is not the result of a headline increase in tax rates but is instead driven by a phenomenon known as "fiscal drag," where frozen tax thresholds fail to keep pace with rising nominal wages. According to a comprehensive new analysis by the TaxPayers’ Alliance, a campaign group advocating for lower taxation, the continued freeze on personal allowances and tax bands is effectively functioning as a "stealth tax," significantly eroding the real-term value of pay increases across the country.

The data reveals a stark breakdown of the affected demographics. Approximately 500,000 individuals are forecast to become basic-rate taxpayers as their earnings exceed the frozen personal allowance. Meanwhile, 410,000 workers are expected to cross the threshold into the 40 percent higher-rate band, and a further 70,000 high earners will begin paying the 45 percent additional rate. As wages rise in response to inflation and labor market pressures, the lack of upward adjustment in tax thresholds means that the government captures a larger share of total national income without having to pass new legislation to raise rates.

The Mechanics and Growth of Fiscal Drag

Fiscal drag, often referred to as "bracket creep," occurs when tax thresholds are not indexed to inflation or wage growth. In a healthy economy, wages typically rise to maintain purchasing power against inflation. However, when the level at which a person starts paying tax—or starts paying a higher rate of tax—remains static, a pay rise that merely keeps up with the cost of living can result in a higher proportion of that person’s income being surrendered to the Treasury.

The current freeze on the personal allowance and the higher-rate threshold has been in place since the 2021/22 tax year. Originally introduced by the then-Chancellor Rishi Sunak as a temporary measure to repair public finances following the COVID-19 pandemic, the policy has been repeatedly extended. Most recently, the 2025 Budget confirmed that these thresholds would remain frozen until April 2031. This decade-long stagnation represents one of the most significant shifts in the UK’s fiscal policy in recent history.

For the 2026/27 tax year, the personal allowance in England, Wales, and Northern Ireland remains fixed at £12,570. Income earned between £12,571 and £50,270 is taxed at the basic rate of 20 percent. The higher-rate threshold begins at £50,271, where earnings up to £125,140 are taxed at 40 percent. Any income exceeding £125,140 is subject to the 45 percent additional rate. While Scotland maintains its own distinct tax bands and rates, the UK-wide personal allowance still dictates the point at which most Scottish residents begin paying tax.

A Chronology of Threshold Freezes

The trajectory of the current tax freeze highlights a persistent reliance on fiscal drag by successive administrations to bolster the national exchequer.

• March 2021: The Conservative government announced that the personal allowance and higher-rate threshold would be frozen at 2021/22 levels until April 2026.
• November 2022: Following the "mini-budget" crisis and subsequent leadership changes, Chancellor Jeremy Hunt extended the freeze by a further two years, pushing the end date to April 2028.
• April 2023: The threshold for the 45 percent additional rate was lowered from £150,000 to £125,140, pulling more high-earners into the top bracket.
• October 2024: In the first Labour Budget in 14 years, Chancellor Rachel Reeves announced that the freeze would be extended until 2031, despite previous criticisms of "stealth taxes" from various political quarters.

The Office for Budget Responsibility (OBR) has provided sobering estimates regarding the revenue generated by this policy. The OBR projects that by the time the freeze concludes in 2030/31, it will be raising more than £55 billion per year for the government. This makes it one of the single most effective revenue-raising measures in the UK’s modern fiscal history, albeit one that remains largely invisible on a monthly payslip.

Supporting Data and Revenue Distribution

The TaxPayers’ Alliance analysis underscores a shifting burden in who pays the most income tax. One of the most striking findings is that the number of additional-rate taxpayers—those earning over £125,140—has increased fivefold since the band was first introduced. Furthermore, those paying the higher and additional rates now account for a staggering 72.9 percent of all income tax revenue collected by HM Revenue and Customs (HMRC).

This concentration of the tax burden among middle and high earners has sparked debate about the long-term sustainability of the UK’s tax base. John O’Connell, chief executive of the TaxPayers’ Alliance, characterized the situation as a "trap" for ordinary workers. "Freezing thresholds lets ministers rake in billions without admitting they have raised taxes, hitting workers, pensioners, and families across the country," O’Connell stated. He argued that the policy unfairly penalizes those who work hard to secure pay raises, only to see a disproportionate amount of that increase claimed by the state.

The "60 Percent Tax Trap" and Complexities for High Earners

A particularly contentious aspect of the current system is the "tapering" of the personal allowance for those earning over £100,000. For every £2 earned above this limit, the personal allowance is reduced by £1. This creates an effective marginal tax rate of 60 percent on income between £100,000 and £125,140 (the 40 percent higher rate plus the 20 percent lost from the personal allowance).

As wage growth pushes more professionals, such as senior teachers, doctors, and mid-level managers, into this £100,000+ bracket, the "60 percent trap" is becoming a reality for a larger portion of the workforce. This phenomenon often discourages employees from taking on extra shifts, seeking promotions, or accepting bonuses, as the net financial gain is severely diminished.

Reactions and Official Responses

The political response to the extension of the tax freeze has been polarized. While the current government, led by Prime Minister Keir Starmer, has emphasized the need to fill a "black hole" in public finances and fund essential services like the NHS, critics argue the policy disproportionately affects the "squeezed middle."

Speculation regarding a potential uplift in the personal allowance was recently addressed by government figures. While some Labour voices had suggested a review of the thresholds to alleviate pressure on low earners, the administration has remained cautious. The government has stated that any changes to tax thresholds must be weighed against the broader state of public finances and the commitment to debt reduction. The decision to extend the freeze until 2031 suggests that, for the foreseeable future, the Treasury views fiscal drag as a necessary tool for fiscal consolidation.

Implications for HR and Reward Strategies

The intensifying impact of fiscal drag has significant implications for employers, Human Resources (HR) departments, and payroll teams. As more employees find themselves moving into higher tax brackets, the perceived value of salary increases may diminish, potentially leading to lower morale and increased demands for non-taxable benefits.

1. Demand for Tax-Efficient Remuneration:
Employers are likely to see an uptick in requests for salary sacrifice arrangements. By contributing a portion of their pre-tax salary into a pension scheme or utilizing schemes for electric vehicles or cycle-to-work programs, employees can reduce their "adjusted net income." This can be particularly beneficial for those hovering around the £50,270 or £100,000 thresholds, helping them avoid higher tax rates or the loss of their personal allowance.

2. Communication Challenges:
Payroll and HR teams face a growing need to educate the workforce on how the UK tax system operates. A common misconception among employees is that moving into a higher tax band means their entire income is taxed at the higher rate. Clear communication is required to explain that the 40 percent or 45 percent rates only apply to the portion of earnings above the respective thresholds.

3. Impact on Pensioners:
It is not only the active workforce that is affected. Pensioners receiving the State Pension are also being drawn into the tax net. With the "Triple Lock" ensuring that the State Pension rises significantly each year, many retirees whose total income was previously just below the £12,570 limit now find themselves becoming taxpayers for the first time, often with little understanding of how to manage these new obligations.

Broader Economic Analysis

From a broader economic perspective, the reliance on fiscal drag may have unintended consequences for consumer spending. As a higher percentage of household income is diverted to tax, discretionary spending power is reduced. In an economy heavily reliant on consumer services, a prolonged squeeze on take-home pay could dampen economic growth.

Furthermore, the UK’s tax burden is currently at its highest level since the post-World War II era. Analysts suggest that while fiscal drag is an "easy" way for governments to raise funds without the political fallout of a headline tax hike, it risks creating a "disincentive culture." If workers feel that the rewards for career progression are being swallowed by an unresponsive tax system, the long-term productivity of the UK labor market could be compromised.

As the 2031 deadline for the current freeze approaches, the debate over income tax thresholds is likely to remain a central pillar of British political and economic discourse. For now, the "million more Brits" caught in the taxman’s net serve as a testament to the quiet but powerful force of fiscal drag in shaping the nation’s financial reality.