The UK’s child benefit tax system is facing renewed pressure for reform, with leading tax advisers warning that the current rules create inconsistent outcomes and unfairly penalise some families based on how income is distributed between parents.
Blick Rothenberg has called for the High-Income Child Benefit Charge (HICBC) to be abolished and replaced with a simpler system, arguing that the decade-old mechanism no longer reflects modern household finances.
Nimesh Shah, chief executive of Blick Rothenberg, said the charge had produced “inconsistent and unfair outcomes” since its introduction and urged the government to replace it with a system based on a clearer assessment of family circumstances.
The current rules withdraw child benefit when one parent’s income exceeds £60,000, with the benefit fully removed once that individual earns £80,000 or more. However, the calculation is based on individual income rather than total household earnings.
That means two parents earning £59,000 each, with a combined household income of £118,000, can continue receiving child benefit, while a single earner on £65,000 may face a repayment requirement.
Critics argue that this creates a tax system that treats households with similar financial circumstances differently depending on how income is split.
“The charge is based on individual income, not household income,” Shah said, highlighting what he described as a fundamental weakness in the design of the policy.
The complexity of the system has also attracted criticism. The charge relies on adjusted net income calculations and can apply even where the person responsible for paying the charge is not the parent receiving the benefit.
Under the current mechanism, families repay 1 per cent of their child benefit for every £200 earned above the £60,000 threshold, creating a gradual withdrawal process but also adding administrative burdens for affected households.
Tax advisers argue that the government should consider replacing the system entirely with either a household-based means test or a new tax allowance linked to parents of children under 18, tapered for higher earners.
Shah suggested a potential alternative would be an enhanced personal allowance for parents, gradually reduced once income reaches higher levels.
The debate comes after the government previously adjusted the thresholds in 2024, when the former Chancellor Jeremy Hunt increased the starting point from £50,000 to £60,000 and raised the full withdrawal level from £60,000 to £80,000.
The changes reduced the number of families affected and reversed some of the impact of years of fiscal drag, where frozen thresholds gradually pulled more households into the tax system.
However, advisers argue that simply changing thresholds does not address the underlying issue.
“If the government does seek to address HICBC it must avoid taking the easy way out of readjusting the thresholds,” Shah said, arguing that the structure of the system itself requires reform.
For ministers, the challenge is balancing fairness with the cost of supporting families at a time when public finances remain under pressure.
Child benefit reform has long been politically sensitive because any major redesign could create winners and losers among millions of households.
But with growing scrutiny over the complexity of Britain’s tax system, pressure is increasing for a solution that better reflects modern family incomes rather than relying on a decade-old income threshold model.
The question facing the government is whether it chooses another adjustment to the existing system — or uses the opportunity to redesign how child support is delivered altogether.
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