100k Tax Trap Statistics UK: 763,000 Workers Hit by 60% Tax as Numbers Double

Britain’s £100,000 tax trap is catching more workers than ever, with new figures showing that the number facing an effective 60% marginal Income Tax rate has more than doubled in five years.

According to HMRC figures obtained through a Freedom of Information request, an estimated 763,000 taxpayers fell into the £100,000 to £125,140 income band in 2025/26, compared with approximately 376,000 in 2020/21.

That represents an increase of almost 103%, raising concerns about frozen tax thresholds, salary progression and the financial pressures affecting higher-earning households.

The issue has attracted renewed attention in October 2026 as financial experts question whether the tax system is discouraging people from accepting promotions, working additional hours or increasing their earnings.

Although £100,000 remains a substantial annual income, the threshold has not increased since April 2010, meaning wage inflation has brought a growing number of professionals within its reach.

UK £100k Tax Trap Statistics Reveal Sharp Rise in Affected Workers

The latest estimates highlight how rapidly the tax trap has expanded as earnings increase while the underlying threshold remains unchanged.

Figures published on 12 October 2026 show that approximately 387,000 additional taxpayers entered the affected income band between 2020/21 and 2025/26.

An estimated 78,000 more people were caught between 2024/25 and 2025/26 alone.

The 2025/26 figure is an estimate from HMRC information obtained through a Freedom of Information request. The 60% rate applies to the affected portion of income in England, Wales and Northern Ireland, not the taxpayer’s entire salary.

The increase reflects a broader phenomenon known as fiscal drag, where rising earnings push taxpayers into higher effective tax brackets without the government necessarily increasing headline tax rates.

The Financial Times has also highlighted the growing population caught in the trap, citing a figure of approximately 727,000 in its October reporting. These estimates should be identified by their reporting periods and methodology rather than treated as directly interchangeable.

Meanwhile, HMRC’s wider income statistics published in July 2026 project approximately 2.06 million Income Tax payers with total annual income of £100,000 or more in 2026/27.

That is substantially more than the number specifically caught in the personal allowance tapering band, because it includes people earning over £125,140.

Another important figure is the projected 1.19 million taxpayers earning between £100,000 and £150,000 in 2026/27, compared with 878,000 in 2023/24.

These figures are not contradictory. They cover different income ranges and tax years, making it essential to distinguish between all six-figure earners and those experiencing the 60% marginal rate.

Why Are Workers Paying 60% Tax on Earnings Above £100,000?

The unusual tax burden comes from the gradual withdrawal of the Personal Allowance.

For the 2026/27 tax year, most UK taxpayers receive a standard tax-free Personal Allowance of £12,570.

However, once adjusted net income exceeds £100,000, that allowance begins falling by £1 for every additional £2 earned.

Someone earning £110,000, for example, loses £5,000 of their allowance, leaving just £7,570 tax-free.

This creates an effective 60% marginal Income Tax rate because additional earnings are taxed at 40%, while the withdrawal of the allowance creates a further 20% tax effect.

For employees paying National Insurance at 2% above the upper earnings limit, the combined marginal deduction reaches 62%.

The difference can be significant when somebody receives a salary increase.

Illustrative figures for employees in England, Wales and Northern Ireland whose additional earnings fall entirely between £100,000 and £125,140. They exclude pension contributions, student loan repayments and other deductions.

A £10,000 salary increase within this range could therefore leave an employee with only £3,800 in additional annual take-home pay.

For Scottish taxpayers, the position is different. Scotland’s 45% advanced Income Tax rate, combined with the Personal Allowance withdrawal, can produce a 67.5% marginal Income Tax rate on relevant employment earnings, rising to 69.5% including employee National Insurance.

Workers repaying student loans may face further deductions.

The size of the tax bill also depends on adjusted net income rather than salary alone. Bonuses, taxable benefits and other income can be relevant, while qualifying pension contributions and Gift Aid donations can reduce adjusted net income.

This makes accurate payroll information particularly important. Employees experiencing unexpected deductions may need to check whether their tax code is correct before assuming an increase in deductions is solely attributable to the tax trap.

Frozen Thresholds Have Changed the Meaning of a £100,000 Salary

The £100,000 threshold was introduced in April 2010 as part of changes intended to increase taxation on higher incomes.

More than 16 years later, it remains at precisely the same level.

During that period, inflation, wage growth and changes in employment markets have substantially altered how far a six-figure income stretches.

Nimesh Shah, chief executive of accountancy firm Blick Rothenberg, described the latest figures as “fiscal drag at its worst”, pointing to the growing number of workers entering the tax trap without necessarily experiencing comparable improvements in their financial circumstances.

He estimated that the original £100,000 threshold would be around £155,000 if adjusted for inflation.

Different inflation calculations can produce different equivalent figures, but the underlying concern remains the same: a threshold intended to target high earners in 2010 now affects a much larger share of taxpayers.

The standard Personal Allowance and basic-rate threshold have also been frozen since April 2021, with the current policy extending those freezes until April 2031.

HMRC’s projections for 2026/27 indicate that approximately 7.7 million people will pay higher-rate Income Tax and 1.29 million will fall into the additional-rate category.

While these populations are considerably wider than the £100,000 trap itself, their growth provides further evidence of the impact of frozen thresholds on the UK tax system.

For employees, the effect can be especially noticeable when annual salary reviews, overtime or performance bonuses take their adjusted net income beyond £100,000.

Parents Face an Even Steeper Financial Cliff Edge

The £100,000 threshold creates another financial problem for families with young children.

Under existing rules, parents can lose eligibility for Tax-Free Childcare when either parent expects adjusted net income above £100,000.

The scheme provides government contributions worth up to £2,000 annually per eligible child, rising to £4,000 for an eligible disabled child.

In England, the same income threshold also affects eligibility for the 30 hours of funded childcare offered to qualifying working parents with children aged between nine months and school age.

Consequently, exceeding £100,000 can affect both a parent’s tax bill and their childcare support.

Unlike the gradual withdrawal of the Personal Allowance, these childcare income limits operate as a cliff edge.

Consider a parent earning £99,000 who receives a £2,000 salary increase.

Their adjusted net income could rise to £101,000, assuming no relevant deductions or reliefs.

Although their salary has increased, the loss of childcare eligibility may create additional annual costs substantially exceeding the increase in take-home pay.

The precise amount depends on the child’s age, the childcare provider’s charges, the family’s existing entitlement and the timing of eligibility reassessments.

Three- and four-year-olds in England can still qualify for the universal 15-hour early education entitlement, even where their parents do not qualify for the working-parent entitlement.

Nevertheless, the additional costs can be considerable for households relying heavily on nursery provision.

This also exposes an imbalance between household structures. Two parents each earning £99,000 may meet the upper-income condition, whereas a household with one parent earning £101,000 and the other earning substantially less may not.

The policy has consequently attracted criticism for potentially discouraging additional working hours and career progression, particularly among parents with substantial childcare responsibilities.

Could the Tax Trap Be Holding Back UK Economic Growth?

Financial advisers and economists have raised concerns about the wider consequences of the £100,000 threshold.

The central argument is that employees facing unusually high deductions may be less willing to take on additional responsibilities if the financial reward is limited.

Some professionals may instead reduce working hours, decline overtime, negotiate pension contributions or reconsider promotions.

These choices can have consequences beyond individual finances.

For businesses, fewer employees pursuing senior positions could create difficulties in recruitment and leadership development.

Employers may also find it harder to structure pay packages that reward performance without unexpectedly pushing employees into the personal allowance taper.

The situation is particularly relevant to professional occupations where earnings can fluctuate around six figures, including financial services, technology, medicine, legal services and senior management.

However, it is important to distinguish concerns about incentives from proven economic effects.

The rise in taxpayer numbers does not, by itself, establish how many promotions have been rejected or how much economic output has been lost.

Quantifying those effects would require further evidence about workers’ decisions, employer behaviour and the extent to which pension contributions or reduced hours are directly attributable to the threshold.

The Treasury has defended the reduction of the Personal Allowance for higher earners on the grounds that tax support should be targeted and public services require funding.

Reforming the threshold would therefore involve balancing potential improvements in work incentives against the reduction in government revenue.

Pension Contributions Are Becoming Central to Tax Planning

As the number of affected workers increases, pension contributions are receiving greater attention as a potential way to manage adjusted net income.

For example, someone with £110,000 in annual adjusted net income before a qualifying pension contribution could potentially reduce that figure to £100,000 by making a £10,000 gross pension contribution.

This could restore the full Personal Allowance and, depending on their circumstances, preserve eligibility for childcare support.

However, the outcome depends on the pension arrangement, available annual allowance, other taxable income and the taxpayer’s wider circumstances.

The tax treatment of salary sacrifice arrangements is also an important consideration, particularly when planning future earnings and employer pension benefits.

Employees considering these options can review the different approaches to reducing taxable income for higher earners before making financial decisions.

Some taxpayers may also need to reclaim additional higher-rate pension tax relief. Where too much tax has already been paid, understanding whether HMRC owes a tax rebate can help clarify the appropriate process.

Pension contributions should not automatically be treated as a solution for every household. Reducing accessible income can create cash-flow pressures, while pension investments generally remain inaccessible until the applicable minimum pension age.

Will the Government Change the £100k Tax Trap?

Renewed political attention has placed the future of the £100,000 threshold under scrutiny.

The Conservative opposition has proposed addressing the childcare cliff edge, arguing that the existing arrangements can penalise parents who increase their earnings.

Meanwhile, calls for wider reform of the Personal Allowance taper have intensified following the publication of the latest taxpayer figures.

Potential policy changes could include increasing the £100,000 threshold, introducing a gradual withdrawal of childcare support or changing the rate at which the Personal Allowance disappears.

Each option would have a different fiscal cost and distributional effect, with some changes benefiting relatively high-income households more than others.

As of 13 October 2026, the existing £100,000 Personal Allowance taper remains in place. Taxpayers should therefore plan around the current rules rather than anticipated reform.

The latest statistics underline why the issue is becoming increasingly difficult for policymakers to ignore.

An estimated 763,000 people were caught in the narrow 60% tax band in 2025/26, while HMRC expects more than two million taxpayers to earn six-figure incomes in 2026/27.

For the government, the question is how to maintain revenue while creating a tax system that does not unduly discourage additional work.

For employees approaching £100,000, the immediate concern is considerably simpler: whether their next pay rise will deliver the financial improvement they expect.