The UK government is facing renewed calls to abolish inheritance tax amid warnings the levy risks turning Britain into a “high-tax outlier” that could deter investment and push entrepreneurs overseas.
A new report by the Institute of Economic Affairs (IEA) finds that nearly half of the 38 countries in the Organisation for Economic Co-operation and Development do not tax bequests passed to adult children, leaving the UK among a relatively small group of nations imposing comparatively high taxes on family succession.
In Britain, inheritance tax is charged at 40% on the value of an estate above £325,000, although the threshold can rise to £500,000 when a main residence is left to children.
The IEA report argues the levy acts as a “distortionary” drag on the economy, describing it as an additional burden on wealth that has already been taxed through income tax, national insurance and VAT.
Lord Frost, director general of the IEA, said: “A nation serious about growth and about giving families the freedom to build something lasting, would not levy a 40% charge on wealth that has already been taxed. Nearly half of OECD countries do not tax what parents leave their children at all. Inheritance tax raises relatively little, costs a great deal to administer, and distorts the decisions of exactly the kind of wealth creators and entrepreneurs we are desperate to attract and retain.
“A government looking to boost growth, support families and simplify the tax system for fairness and economic competitiveness should consider abolishing inheritance tax.”
The report also highlights the disproportionate complexity of the tax compared with the revenue it generates. According to the IEA, the Tolley’s handbook covering inheritance tax stretches to around 1,000 pages, despite the levy raising a fraction of the revenue generated by income tax, whose guidance runs to roughly 2,500 pages while bringing in around 37 times more money for the Treasury.
Administering inheritance tax costs the government about £66 million each year, the report notes. However, the true economic cost is likely far higher once the time spent by accountants, lawyers and financial advisers on tax planning is taken into account, alongside the economic distortions created when individuals alter savings and investment decisions to mitigate the charge.
The report argues the case for abolition is strengthened by the potential economic gains from removing what it describes as a distortion to savings and investment. Eliminating the tax, it says, could also improve Britain’s attractiveness as a destination for entrepreneurs and high-net-worth individuals seeking to live and build businesses.
Public opinion has also remained consistently hostile to the levy, with opinion polls regularly showing strong opposition to inheritance tax.
While the IEA reiterates its long-standing view that tax reductions should ultimately be funded through lower government spending, the report outlines a series of less costly reforms that it says could still deliver meaningful benefits.
One proposal would significantly increase the tax-free threshold – nil-rate band – to £2m or more. Data cited in the report shows that in 2022–23, 27,920 of the 31,500 estates that paid inheritance tax were worth less than £2m. Raising the threshold to that level would remove the vast majority of estates from the tax entirely. It would also allow the scrapping of the complex residential nil-rate band and the transferable allowance between spouses, simplifying the system while reducing the overall burden.
The paper also suggests cutting the headline rate of inheritance tax from 40% to 20%. According to the report, such a move could be broadly fiscally comparable to raising the nil-rate band to £2m, while also reducing incentives for tax avoidance.
A further recommendation focuses on simplifying the rules around lifetime gifts. Currently, gifts become exempt from inheritance tax if the donor survives for seven years. The IEA argues that shortening this period to four, three or even two years would significantly reduce the record-keeping burden on families while having only a minimal impact on government revenues.
Rory Meakin, author of the report, said: “Inheritance tax is arbitrary, complex, distortionary and drives away the entrepreneurs Britain needs. A good tax system would not have an inheritance tax and, ultimately, ours should be abolished. But even a hesitant government can reform the system now. Raising the threshold, cutting the rate, simplifying the gifting rules: any of these would be a meaningful step in the right direction.”
