Let's Break it down
A growing number of UK households earning six-figure incomes are now facing an effective tax rate as high as 71 percent, according to personal finance experts and official projections. The phenomenon, described as a “tax trap”, primarily affects those earning around £100,000, as a combination of income tax,
National Insurance, and the withdrawal of key benefits penalise incremental increases in earnings. Recent HM Revenue & Customs (HMRC) forecasts reveal that this financial pinch is set to intensify, with nearly two million individuals projected to be affected during the 2026–27 tax year a number that has risen sharply in recent years.
The trend highlights the impact of recent government policy decisions, both current and past, as inflation and frozen thresholds push more earners into higher tax brackets without corresponding increases in real income.
Tax Trap for High Earners
The effective 71 percent tax rate is not a formal tax band, but rather the combined effect of tax and benefit rules that suddenly reduce take-home pay once salaries cross the £100,000 threshold.
Experts warn that these measures mean many individuals are financially better off earning just under £100,000 than exceeding the threshold, due to the disproportionate loss in net income caused by benefit clawbacks and higher taxes. Personal finance analysts highlight that the incremental tax bill dramatically increases at this threshold, effectively penalising professional advancement and overtime work.
“Thanks to successive policy changes…it no longer pays to earn £100,000,” warned one financial commentator, referencing the cumulative effect of policies introduced by both Labour and Conservative governments.
Personal Allowance Reduction
A central factor behind the steep effective tax rate is the tapering of the personal allowance. The tax-free personal allowance currently set at £12,570—is steadily withdrawn for every £2 of adjusted net income above £100,000.
By the time a salary reaches £125,140, the allowance is lost entirely. This results in individuals paying not only the higher rate of income tax but also losing an extra 20 percent of their earnings in this range, plus National Insurance contributions.
Calculations by HMRC confirm that for earnings between £100,000 and £125,140, every additional pound is taxed at a marginal rate of 62 percent.
Impact on Childcare Benefits
In addition to taxed income, high earners see other government support withdrawn. For families with children, eligibility for tax-free childcare and other financial assistance is removed once the household’s income surpasses £100,000.
This can leave households with significantly higher nursery and childcare costs which may absorb the marginal value of any extra income earned above the threshold. Parents report sometimes becoming financially better off only when their earnings exceed £145,000, as only then does net income recover from the loss of personal allowance and childcare benefits.
The withdrawal of these benefits adds a further burden on dual-income families in particular, compounding the overall impact of the tax trap.
Rising Number Caught in the Tax Trap
HMRC's own statistics indicate that the number of taxpayers caught by the £100,000 threshold effect has risen sharply as wage growth and inflation outpace increases in the personal allowance. For 2026–27, around two million individuals are projected to enter this narrow and punitive band up from 1.2 million just five years prior.
The increase is primarily attributed to the government’s decision to freeze tax allowances and thresholds during a period of high inflation, resulting in more earners being subject to higher tax rates even when the rise in gross income fails to keep pace with the rising cost of living.
Fiscal Drag and “HENRYs”
The phenomenon, labelled by some as a form of “fiscal drag”, has contributed to the emergence of so-called “HENRYs” high earners, not rich yet. Experts such as Olly Cheng, Senior Financial Planning Director at Rathbones, note that “earning £100,000 once felt like financial freedom, but today it often comes with a hidden tax sting.
” Cheng further commented that frozen thresholds and inflation are pushing more people into higher tax bands, diminishing their disposable income and making it harder to accumulate wealth. The increased tax burden is leaving many professional households feeling financially squeezed, despite their relatively high salaries.
Final Summary
The sharp rise in households facing an effective tax rate of up to 71 percent in the UK highlights the effect of overlapping tax thresholds, allowance tapering and benefit withdrawal. With millions now caught in the tax trap due to frozen thresholds and rising wages, financial experts warn of growing disparities for those earning around £100,000, once seen as a benchmark for financial stability.
The situation underscores calls for policy review and reform to prevent further erosion of take-home pay amongst key professional earners. For those seeking to better understand the implications for personal finance, tools such as the Pie app can offer clarity around salary and taxation scenarios.
