Elon Musk just became the first man worth a trillion dollars. At least on paper. His fortune, largely tied to Tesla shares, is a testament to the power of equity in a globalised market. For Westminster, it’s a headache wrapped in a balance sheet.
The charts tell a story of exponential growth. Musk’s net worth has ballooned from $20bn in 2020 to over $300bn today. But here’s the rub for the Treasury: that wealth is mostly unrealised. It’s not taxed until he sells. And when he does, the UK might not see a penny.
Musk is a tax exile. He moved to Texas in 2020, swapping California’s high state taxes for zero. His companies – Tesla, SpaceX, Neuralink – are incorporated in the US or elsewhere. The UK’s tax net catches little of his income. Yet his rise is a symbol of something deeper.
The pressure is on Britain’s system. We have a capital gains tax rate of 20% (28% for residential property) and a top income tax rate of 45%. But the very rich can avoid both. They borrow against their shares, live on loans, and never realise gains. The Chartered Institute of Taxation estimates that unrealised gains on UK-listed shares amount to £1.2trn. No tax is paid on that.
Labour’s shadow chancellor, Rachel Reeves, has hinted at closing the loophole. A wealth tax on assets over £10m was mooted in 2019. Then the pandemic hit. Now, with public debt at 100% of GDP, the idea is back. But don’t expect a quick fix. The Treasury fears capital flight. A wealth tax in France drove the rich to Belgium. Britain’s 45% rate is already a deterrent. Adding a wealth tax could push the likes of Musk further away.
Musk’s rise also highlights the global race to the bottom. The UK has cut corporation tax to 25% from 28% in 2011. The US just passed a 15% minimum on book profits for big firms. But super-rich individuals? They play a different game. Offshore trusts, non-dom status, and share buybacks are their tools. The UK’s non-dom regime is under review but remains generous.
The political fallout is clear. The public sees billionaires paying less tax than nurses. The Resolution Foundation found that the top 0.1% pay an effective tax rate of 27%, lower than the median. That’s a powder keg. Labour is circling. Backbench Tories are uneasy. The Treasury knows something must give.
But what? A windfall tax on energy giants was easy. A wealth tax on individuals is a minefield. The valuation of assets like art or private companies is subjective. Avoidance schemes are rife. And there’s the risk of driving away the very entrepreneurs who create jobs. Musk’s presence in the UK is minimal, but his influence is not. His tweets move markets. His companies poach British talent.
For now, the prime minister is silent. The chancellor is focused on growth. But the tide is turning. The OECD is pushing for a global minimum tax on billionaires. The US is exploring a billionaire income tax. The UK cannot stay an outlier forever.
Musk’s trillion-dollar chart is a neon sign. It says: the system is broken. The question is how to fix it without breaking the economy. That’s a game of high-stakes poker, and Westminster is bluffing.
