What is the £100k income ‘cliff-edge’?
The tax-free personal allowance starts to be taken away when you hit six figures, and in England you lose access to childcare subsidies Believe it or not, there are downsides to earning more than £100,000 a year – particularly if you have small children. “It’s the ambition of many people to reach an income of £100,000, but it does come with an unexpected sting in the tail,” says Sean McCann, a…
Reaching an income of £100,000 a year might seem like a pinnacle of financial success for many people, but it comes with a hidden consequence that can be surprisingly severe, particularly for families with young children. According to chartered financial planner Sean McCann from NFU Mutual, once you earn more than £100,000, a significant portion of your income is effectively taxed at 60%, leaving you with only a small fraction of every £100 earned.
To put it simply, for every £2 you earn over the threshold, you lose £1 of the £12,570 annual tax-free personal allowance, which means that any earnings between £100,000 and £125,140 are taxed at 60%. Adding the 2% national insurance payable on top of this results in a substantial reduction in disposable income. Furthermore, the impact extends beyond just tax implications.
In England, high earners also lose access to government childcare subsidies once a parent's adjusted net income exceeds £100,000 for a tax year. This sudden loss of financial support can amount to roughly £30,000 for a family with two young children, according to investment platform AJ Bell. The loss is due to the discontinuation of three key components: tax-free childcare, free hours' childcare, and child benefit.
Tax-free childcare, which provides up to £2,000 per child annually, disappears entirely. The 30 hours of funded term-time childcare for children aged nine months to three years, as well as half of the 30 hours for children aged between three and four, are also lost. Additionally, the family's child benefit entitlement, currently £27.05 per week for the eldest or only child and £17.90 for each additional child, is entirely clawed back by the high-income child benefit charge, a tax penalty that kicks in when someone's income surpasses £60,000.
These changes represent a sharp decline in support, often referred to as a "cliff-edge" effect. An estimated 800,000 people in the UK are affected by this "cliff-edge," with official government data suggesting that between 50,500 and 99,000 children in the 2025-26 fiscal year were impacted. This sharp increase in the number of children affected highlights the significant financial challenges faced by high-income families with young children, who suddenly find themselves without crucial financial assistance once they cross the £100,000 income threshold.
Written by urgent.news from Guardian Business's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
