Meet the tax sleuth who’s become a neidle in the side of the great and good

Tax has rarely dominated the headlines quite like it does today. As politicians are toppled by undeclared gains, public figures scramble to explain offshore structures and talk of tax hikes ahead of this month’s Budget fuels front-page speculation, one name keeps reappearing: Dan Neidle.

The former Clifford Chance partner who helped expose Nadhim Zahawi’s multimillion-pound capital gains settlement has become Westminster’s go-to tax sleuth – and the UK’s most trusted voice on what the small print really means.

When tax stories erupt, it’s Neidle who cuts through the jargon. A former City lawyer turned think-tank founder, he has built a huge following — over 170,000 on X and 62,000 on LinkedIn – for his calm explanations of complex rules and his willingness to call out misinformation.

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With the November Budget looming – and an estimated £20-30 billion fiscal hole to fill – pressure on Chancellor Rachel Reeves is intensifying. Neidle is blunt about the choices she faces. “You can either fill it with cuts, or you can fill it with tax rises. But it’s a fantasy to pretend there’s some magic third option,” Neidle tells Jewish News. “Unless we face up to the situation, our public services, which are already cr*p, will keep getting worse,” he says.

“What we need isn’t tweaks or tinkering — it’s serious reform,” argues Neidle. “The tax code has become a ratchet that only ever gets worse. It’s now one of the least competitive in the developed world — worse than Italy or Greece — because of its sheer complexity. Unless we face up to that, our economy is going nowhere.”

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Endless leaks about possible Budget measures, he adds, are damaging. “They scare people off investing or moving house. People tell themselves they’ll ‘wait until after the Budget’. This can’t be good for growth. A roadmap would do more for confidence than any gimmick.”

Neidle founded Tax Policy Associates in 2022 as an independent, non-profit think tank to improve tax and legal policy, provide expert analysis, and inform public debate. He shot to prominence the following year when he uncovered that then-Conservative Party chairman and former Chancellor Nadhim Zahawi had underpaid millions of pounds of capital gains tax — a revelation which ultimately saw him sacked by then-prime minister Rishi Sunak. The case centred on capital gains linked to Zahawi’s offshore shareholding in polling company YouGov.

A self-confessed “tax nerd”, Neidle dug into publicly available information, explained the likely mechanics, and concluded that Zahawi had underpaid almost £4 million of capital gains tax and lied about it. Zahawi’s lawyers sent a threatening letter warning him off. Neidle published the letter, stood by his analysis, and was ultimately vindicated when Zahawi admitted to the settlement and was dismissed by Sunak.

“Someone suggested I look at Jeremy Hunt, then Rishi Sunak,” Neidle explains. “Both stood up to scrutiny. But Zahawi didn’t — and when I published my findings, he threatened to sue me. By then I had an audience I’d never anticipated. People wanted facts without spin, and I was giving them that.”

More recently, Neidle cast a critical eye over Labour’s former deputy prime minister and housing minister Angela Rayner. The controversy centred on whether Rayner should have paid capital gains tax on the 2015 sale of a former council house she declared as her main residence — a saga that eventually forced her resignation after weeks of political pressure. “What surprised me,” he says, “was how she gave a misleading impression of confidence and certainty when she hadn’t done the work to back it up. She was advised to get proper tax advice but didn’t do that.”

Neidle did not set out to become a public figure – or Britain’s unofficial tax watchdog. After joining Clifford Chance in 1998, he qualified as a tax lawyer. By 2008 he had made partner – “terrible timing,” he jokes, as it coincided with the financial crisis – and eventually became head of tax at the firm’s London office. Over a 25-year career, he advised corporates, governments, regulators, central banks and NGOs on tax and tax policy.

The pandemic forced a reassessment. “I was in a privileged position of not needing to work anymore,” he explains. “But I still wanted to do something and use my brain. I loved being a lawyer, but I also hated how tax was being covered — too many people with agendas shaping the debate. So, I thought, why not set up a think tank? I could write position papers, keep my brain active, and maybe make a small difference.”

That think tank quickly attracted attention from journalists, policymakers, businesses and individuals. To avoid potential conflicts, he undertakes no commercial work, and donates all his fees for writing and speaking to charity.

His contributions have not gone unnoticed. In 2023, he was listed by The Lawyer as one of the 100 most influential lawyers in the UK, and by International Tax Review as one of the 50 most noteworthy tax figures worldwide. His work with Tax Policy Associates that year won the Tolley’s award for “Outstanding Contribution to Taxation” and “Investigation of the Year” at the British Journalism Awards. In 2024, he received the John Stokdyk Outstanding Contribution to Accounting award.

Tax now enjoys a prominence it never used to. “You’ve got multinationals accused of avoiding billions, politicians embarrassed by their personal affairs, and a public sense that ordinary people are carrying too much of the burden,” Neidle says. “That combination has pushed tax into the headlines in a way I’ve never seen before.”

Yet he stresses that the profession remains misunderstood. “There’s this caricature of tax lawyers spending their days dreaming up innovative schemes to help people avoid tax. The reality is very different. Big corporates are far more cautious now than they were in the 1990s or 2000s. The real aggressiveness comes from smaller businesses and individuals — they’re the ones pushing boundaries.”

His prescriptions for reform are as forthright as his analysis. He argues for cutting employee National Insurance and raising income tax instead. “That would mean a tax cut for most workers, while shifting more of the burden onto landlords and retired people.” Employer NI, he says, is “just about the worst way to raise money because it hits jobs and the low-paid hardest.”

Stamp duty, he adds, should be scrapped entirely. “It stops people moving, adds to human misery and holds back the labour market. It’s an anti-growth tax.” He is also critical of recent reforms to inheritance tax, which he says leave loopholes for avoiders while penalising ordinary homeowners, small businesses and family farms. “You end up with small companies and farms broken up to pay the bill while those with slick advisers get away unhurt. That cannot be right.”

For Neidle, Britain’s problem is not that it taxes too much — Scandinavian countries raise more — but that it taxes badly. “They (Scandinavian countries) manage to raise money in a stable, rational, competitive way. We do the opposite. Our system is irrational, anti-growth, and it keeps getting worse.”

The UK has long been notorious for having one of the world’s most complex tax codes. That complexity, he warns, has opened the gates to an increasing number of unregulated operators selling questionable schemes to ordinary taxpayers.

Last month, Neidle published an investigation into the unregulated firm ‘Property118’. “They market ‘family investment companies’ to landlords as an inheritance tax magic bullet. But the structure is based on a misunderstanding of the law and will leave many clients with six-figure tax bills — not when they die, but now.

“In the old days, it was big corporates raiding the Exchequer,” he says. “Now it’s unregulated firms raiding their own clients. My role is as much about defending people from conmen as it is about policy.” That willingness to call out questionable practices has not come without risk. Neidle is currently facing an £8 million libel claim over an article he published on the Tax Policy Associates website, which he is defending. Nedile has applied to have it struck out and noted on X that he “won’t be crowdfunding it because (I) expect to win!” The case is ongoing.

So, what will we see from Rachel Reeves in the budget later this month? Neidle isn’t one for making predictions. “I tried that when I thought that employer National Insurance couldn’t go up but it did. It’s a dangerous game.” But what he can be sure of is that he is “not optimistic about the direction of travel.

“Unless politicians level with the public — that either we pay more tax, or we accept fewer services — we’re in trouble. If neither side is willing to be honest, then we’re heading for a dark place.”

taxpolicy.org.uk