Would this be a good idea?
‘Two percent minimum tax on richest households could raise £10 billion
Introducing a two per cent minimum annual tax on households with more than £100 million in wealth could raise around £10 billion in 2026, while affecting fewer than 1,000 households in the UK, suggests a report by academics at King’s College London, the Paris School of Economics and the University of California, Berkeley.’p
‘The proposed reform would require ultra-high-net-worth households with more than £100m to pay a minimum effective tax rate equivalent to 2 per cent of their total wealth, with any income taxes already paid deducted from this liability. Households already paying the equivalent of 2 per cent of their wealth in tax would pay nothing extra.
Key findings of the report include:
- £10.4 billion could be raised in 2026 – 10 times the estimated savings from cutting the 2024/25 Winter Fuel Allowance. £10.4 billion would reduce the UK's projected current budget deficit by almost one-third.
- Fewer than 1,000 households would be subject to the tax, substantially limiting administrative costs, which are estimated at less than one per cent of revenues.
- Households with more than £100 million in wealth would remain within the scope of the tax for up to ten years after ceasing UK residence to limit migratory responses - building on the principle recently introduced for the UK inheritance tax.
- This proposal fills a gap which even reforming capital gains tax and inheritance tax cannot fix. This is because the wealth of the super-rich is held in assets that can be accumulated for decades and borrowed against without ever triggering a taxable event. This proposal tackles this directly by taxing wealth itself.
- Revenues would continue to grow over time, reaching almost £18 billion annually by 2036.
- Nearly half of all revenues would come from fortunes primarily built in finance, real estate and land.
The report argues that, unlike previous wealth taxes, the proposal is deliberately targeted at only the very wealthiest households. Because of the high £100 million threshold, HMRC could concentrate compliance, valuation and enforcement resources on a very small number of taxpayers, making the policy substantially more administratively feasible than historic wealth taxes.
The authors also propose that households above the threshold would remain liable for the tax for up to ten years after leaving the UK, reducing incentives for tax-motivated migration and building on similar and recent reforms to UK inheritance tax rules.’
"Wealth taxes have too often been dismissed as politically attractive but practically impossible. This report shows that a well-designed minimum tax on the very wealthiest households is a realistic, targeted reform that would make the UK's tax system fairer while raising substantial revenues."
https://www.kcl.ac.uk/news/2-minimum-tax-on-richest-households-could-raise-10-billion-a-year