For generations, Britain has understood the value of attracting wealthy people.
London became one of the world’s great financial centres partly because international capital was welcomed, international businesses were encouraged to establish themselves in Britain, and wealthy individuals from around the world were prepared to make the UK their home.
But the relationship between Britain and private wealth is changing.
The question is no longer whether the UK is a high-tax country.
The more interesting question is whether Britain is becoming a less attractive place for internationally mobile wealth.
Wealth Is Mobile
Most taxpayers cannot choose where they live based primarily on taxation.
A wealthy individual can.
This does not mean that a person will move simply because another country has a lower tax rate. Family, business interests, education, language, lifestyle and existing investments all matter.
But once wealth becomes sufficiently substantial, taxation becomes one factor in a much larger decision.
And increasingly, that decision is being made internationally.
The wealthy are not necessarily asking:
“Which country has the lowest taxes?”
They are asking:
“Which jurisdiction offers the best combination of tax, stability, lifestyle, investment opportunities and access to markets?”
That is a very different question.
Britain’s Historic Advantage
Britain’s historic advantage was never simply low taxation.
It was the combination of the City of London, the English legal system, deep capital markets, a sophisticated professional-services industry, political stability and an internationally connected economy.
The UK could therefore impose relatively significant taxes without necessarily losing its position as a destination for international wealth.
The system also historically provided an important incentive for internationally mobile individuals through the non-domiciled regime.
In broad terms, a UK resident who was not UK domiciled could, subject to the detailed rules, use the remittance basis so that certain foreign income and gains were taxed differently from income and gains arising in the UK.
But the regime had already been significantly restricted.
From 6 April 2017, the UK introduced deemed-domicile rules under which individuals who had been UK resident for at least 15 of the previous 20 tax years could become deemed UK domiciled for tax purposes.
The message was becoming clearer:
Long-term residence in Britain increasingly meant long-term exposure to the British tax system.
The Problem Is Not One Tax
The debate about whether Britain is hostile to wealth often focuses on individual tax rates.
That misses the bigger picture.
A wealthy individual does not look at income tax in isolation.
They look at income tax.
Capital gains tax.
Dividend taxation.
Inheritance tax.
Property taxes.
Stamp duty.
Trust taxation.
The treatment of offshore assets.
The cost of compliance.
And increasingly, the predictability of the rules.
It is the combined effect that matters.
In 2022, the UK’s inheritance tax rate remained 40%, with a £325,000 nil-rate band and a residence nil-rate band of up to £175,000 subject to the relevant conditions.
Capital gains were generally taxed at 10% or 20% for individuals, with higher rates applying to residential property and certain other gains.
None of these figures, taken individually, makes Britain an uncompetitive jurisdiction.
The issue is the accumulation of them.
Then There Is Uncertainty
For wealthy individuals, certainty can be almost as important as the tax rate itself.
An investor making a ten-year investment decision does not simply ask what the tax rate is today.
They ask what the tax regime is likely to look like in five or ten years.
This is particularly important when governments repeatedly signal that the taxation of wealth, offshore structures, property and internationally mobile individuals is under review.
This is particularly important when governments repeatedly signal that the taxation of wealth, offshore structures, property and internationally mobile individuals is under review.
For an investor making a ten-year decision, the question is therefore not simply what the tax regime looks like today. It is whether the direction of policy provides sufficient confidence that the rules will remain predictable tomorrow.
Again, none of these changes is individually revolutionary.
But wealthy individuals do not experience taxation as a series of isolated announcements.
They experience it as a cumulative environment.
London Is Different
There is an important counterargument.
London remains London.
It has few genuine global competitors in terms of financial services, private equity, investment banking, legal services, wealth management, education and international connectivity.
A wealthy entrepreneur may therefore be prepared to pay more tax in exchange for access to the opportunities London provides.
This is why predicting a mass departure of wealthy individuals from Britain is too simplistic.
People do not move their lives as easily as they move money.
The question is therefore not whether everyone will leave.
It is whether enough people at the margin will choose somewhere else.
That is where the economic consequences begin.
The Marginal Investor Matters
The UK does not need to lose every wealthy individual for the policy to have an economic effect.
If a family office that might previously have established itself in London chooses Geneva instead, that is capital lost.
If an entrepreneur chooses Dubai rather than London as the base for a new international business, that matters.
If a private equity executive chooses Monaco, Switzerland or another European jurisdiction as a residence while continuing to invest in Britain, the UK may still retain the investment — but not necessarily the individual, the consumption, the professional-services revenue or the future capital.
This distinction is important.
Capital can remain invested in Britain while the people controlling that capital move elsewhere.
The New Competition
Britain is no longer competing only with other major European economies.
It is competing with jurisdictions that have deliberately positioned themselves around mobile wealth.
Monaco offers proximity to Europe and a distinctive personal-tax environment.
Switzerland offers political stability, sophisticated wealth management and a long-established private-banking infrastructure.
The UAE has developed itself into a major international centre for entrepreneurs, investors and family offices.
Italy, Portugal, Greece, Cyprus and Malta have all, in different ways, attempted to attract internationally mobile individuals through combinations of tax incentives, residence programmes, investment opportunities and lifestyle.
The competition is therefore becoming broader.
The wealthy individual can increasingly separate **where they live** from **where they invest**.
This Is Not an Argument for Zero Tax
There is an important distinction between being tax competitive and being tax-free.
Successful countries need tax revenue.
Wealthy individuals benefit from functioning courts, infrastructure, education systems, financial markets and political stability.
The argument is not that wealthy people should pay no tax.
The argument is that governments need to recognise that mobile wealth has choices.
A tax system can extract more from existing taxpayers.
But at some point the question becomes whether the additional revenue is worth the behavioural response it creates.
That is the difficult policy calculation.
The Real Asset Is Confidence
Britain’s greatest competitive advantage may not have been its tax system at all.
It was confidence.
Confidence that London would remain an international financial centre.
Confidence that contracts would be respected.
Confidence that capital could move freely.
Confidence that the legal system would function.
And confidence that the rules would not change dramatically every few years.
Tax policy can therefore damage competitiveness in two ways.
First, through the actual amount of tax paid.
Second, through the perception that the direction of travel is against private capital.
The second can be harder to measure.
It may also be more important.
Where Does This Leave Britain?
Britain is not about to become irrelevant to global wealth.
London’s financial infrastructure is too deep, its professional-services industry too sophisticated and its international position too established.
But that should not be confused with immunity.
Wealth is increasingly international.
Families can live in one country, hold companies in another, invest through a third and maintain businesses across several jurisdictions.
The countries that understand this will compete for that capital.
The countries that assume historical advantages are permanent may eventually discover that they are not.
Britain therefore faces a strategic choice.
It can treat wealthy individuals primarily as a source of additional tax revenue.
Or it can treat internationally mobile wealth as an economic asset that must be attracted, retained and competed for.
Those two approaches are not necessarily mutually exclusive.
But they produce very different outcomes.
The Question Britain Should Be Asking
The important question is not whether Britain is currently the highest-tax jurisdiction in Europe.
It isn’t.
Nor is the question whether every wealthy person will leave.
They won’t.
The real question is whether Britain is becoming incrementally less attractive at the margin.
If the answer is yes, the consequences may not appear immediately.
They may appear in where the next entrepreneur establishes residence.
Where the next family office opens.
Where the next investment company is headquartered.
Where the next generation of wealthy families chooses to educate their children.
And where the next £100 million of capital is managed.
For a country that has spent centuries building itself into one of the world’s great centres of capital, that is a question worth taking seriously.