UK households are being hit hard by what is known as the £100,000 tax trap, a situation where workers earning over £100,000 face significant tax penalties. This trap is not only financially punishing but also putting a halt on many people’s careers, as they face an overwhelming 71% tax charge. For those who breach the £100,000 threshold, the personal allowance is reduced, and they also lose access to childcare support.

According to a report by Killik & Co, which surveyed 2,000 individuals with six-figure salaries, over 20% of high earners believe this tax trap is negatively impacting their career growth. Shockingly, 10% of those surveyed have considered reducing their working hours to avoid crossing the £100,000 mark, while 17% stated they would even turn down a promotion or salary increase to avoid the trap.
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The Impact of the £100,000 Tax Trap
The gradual withdrawal of personal allowances and the loss of government-funded childcare has led many workers to reconsider career decisions. The consequences are particularly severe for families, as the financial strain caused by these tax charges often forces them into counterproductive strategies.
- Loss of personal allowance for every £2 earned over £100,000
- Higher marginal tax rate of 60% for those in this range
- Disincentive for workers to pursue career advancements or higher earnings
- Negative impact on family financial stability
- Wider economic repercussions as skilled professionals hold back from growth opportunities
How It Works
Once an individual’s income exceeds the £100,000 threshold, they begin to lose their tax-free personal allowance. This continues until the personal allowance is fully withdrawn at £125,140. The effect is a tax burden that could be up to 60% on the additional income above the threshold, due to the combined higher tax rate and the loss of personal allowance.
| Income Bracket | Personal Allowance Reduction | Marginal Tax Rate |
|---|---|---|
| £100,000 | Start losing allowance | 40% + 20% (Effective 60%) |
| £125,140 | Allowance fully withdrawn | 60% (Effective Marginal Rate) |
Conclusion: The Economic and Personal Consequences
Will Stevens from Killik & Co emphasizes that the £100,000 tax trap is not just a personal financial issue but a broader economic concern. It is causing workers to turn down promotions, reconsider pay rises, and restrict their working hours, which could have lasting negative impacts on the economy. It is essential for the government to review these tax policies to avoid discouraging professional growth and stalling the careers of capable individuals.
