Data released by HM Revenue and Customs (HMRC) reveals that the wealthiest 10% of UK workers—those earning at least £72,500 per year—now account for 58.4% of all income tax receipts. This marks a significant increase from 50.3% at the turn of the millennium, highlighting a growing reliance on high earners to fund public spending.
During the current financial year, the Labour government anticipates collecting £202 billion in income tax from this group, a rise of £156 billion compared to 1999-2000. The average taxpayer within the top decile now pays approximately £50,000 annually in income tax, up from £17,000 26 years ago, according to official figures.
Rising Tax Burden on High Earners
The increasing concentration of income tax payments among the top 10% reflects both rising incomes and fiscal drag, as thresholds have not kept pace with earnings growth. HMRC's projections show that this trend is accelerating, with the top 1% also contributing a larger share. While the government argues that the system remains progressive, critics contend that the burden has become unsustainable.
Experts warn that further tax rises could trigger negative economic consequences. Robert Salter, a director at advisory firm Blick Rothenberg, highlighted the deteriorating balance between contributions and benefits. "With tax, people have to think there is a balance between what they are paying and what they're getting. And I think that balance isn't right at the minute,” he said. “There has been a lot of squeezing of the upper middle classes in the last few years and eventually those people will say enough is enough."
Counterproductive Policy Concerns
Mike Warburton, former tax director at Grant Thornton, echoed these sentiments, cautioning that policymakers risk reaching a tipping point. "It may be politically expedient to raise more tax from the highest earners. However, we have reached the point where this is likely to be counterproductive, with the negative impact on motivation and investment together with top earners leaving the country," he explained.
The warnings come amid ongoing debate over tax policy in the run-up to the next general election. Incoming Prime Minister Andy Burnham has previously advocated for targeted tax cuts for lower-income workers, proposing a new 10p income tax band for those earning below the current basic rate threshold. Currently, 20% is charged on incomes between £12,571 and £50,270, but the exact scope of a new band remains unspecified.
Political Proposals and Future Outlook
In a September interview with The Telegraph, Burnham also stated there was “definitely a case” to increase the additional rate of income tax to 50p, up from the current 45p. Such a move would further squeeze the top 10%, potentially accelerating the exodus of highly skilled workers and entrepreneurs that experts have warned about.
The data underscores the delicate balancing act facing policymakers: ensuring sufficient revenue for public services without discouraging productivity and investment. With the top decile already bearing the majority of income tax receipts, any additional changes could have disproportionate effects on tax revenues and economic behaviour. Meanwhile, ordinary taxpayers may question the fairness of a system that sees a small group contributing nearly 60% of all income tax, while many others pay little or no income tax.
As the political debate intensifies, the decisions made in the coming months will shape the UK's fiscal landscape for years to come. The question remains how far the top earners can be stretched before the tax base itself begins to shrink.
