Inside the EU's Wealth Tax Playbook
25 Statements Every Entrepreneur, Investor and International Family Should Understand
The European Commission commissioned a comprehensive 327-page study examining net wealth taxes, capital taxes, inheritance taxes and exit taxes.
Although prepared by an independent consortium of researchers rather than constituting legislation, the report was expressly designed to assist policymakers by reviewing existing systems, identifying lessons from around the world and examining what contributes to the successful implementation of wealth-related taxes.
Most people will never read the report.
Most entrepreneurs do not have the time.
Most investors will not even know it exists.
Yet buried within its hundreds of pages are statements that reveal the direction of contemporary thinking about wealth taxation, capital gains, inheritance, exit taxes, international cooperation and tax administration.
This publication does not attempt to summarise the entire report. Instead, it highlights twenty-five passages that, in my opinion, deserve particularly careful attention from business owners, investors and internationally mobile families.
Every quotation below is reproduced directly from the report and every page number is provided. My accompanying comments are my own observations and should not be interpreted as legal, tax or financial advice. They are intended simply to explain why I believe each passage deserves careful consideration.
Part I — The Direction of Travel
The first warning signs are not about one specific tax. They are about policy direction: stronger wealth taxation, greater international coordination and a growing focus on the very wealthy.
1. The report is designed to help policymakers implement wealth-related taxes
“...key takeaways and recommendations for the successful design and implementation of these taxes, particularly in the EU.”
Page 14
Why this matters
Many readers assume this report is merely an academic review of wealth taxation. It is more than that. One of its stated objectives is to identify recommendations and implementation principles that may assist policymakers in designing and administering wealth-related taxes. That does not mean those recommendations will become law, but it does explain why the report is relevant to anyone monitoring the future direction of tax policy.
2. Member States are being encouraged to look at underused tax bases
“This development is encouraging several Member States to consider a greater use of currently underutilised tax bases, notably stocks and transfers of wealth, as well as capital gains.”
Page 20
Why this matters
This is one of the clearest statements in the report regarding future policy direction. It indicates that some Member States are considering broader use of taxes on wealth, wealth transfers and capital gains. Whether any country acts on those discussions is a matter for its own legislative process, but the passage shows these ideas are firmly on the policy agenda.
3. The taxation of the ultra-rich is receiving greater attention
“...the effective taxation of the ultra-rich has been drawing greater attention...”
Page 20
Why this matters
The report places growing emphasis on the taxation of very wealthy individuals and notes international initiatives in this area. This signals an increasing policy focus on how wealth, rather than income alone, is taxed across jurisdictions.
4. A coordinated 2% tax on billionaire wealth is part of the international debate
“...Gabriel Zucman (2024) proposes an internationally coordinated initiative to ensure that billionaires are taxed effectively at 2% of their net wealth...”
Page 20
Why this matters
This passage reports on a proposal made in an external report commissioned by the Brazilian G20 presidency; it is not presented as an EU policy. Nevertheless, its inclusion illustrates the kinds of international ideas that are being discussed in relation to taxing very large fortunes.
5. The report examines how wealth taxes can be effectively implemented internationally
“...the report provides a comprehensive review of provisions aimed at effectively implementing wealth-based taxes, at both the national and international levels...”
Page 21
Why this matters
Tax policy is only part of the equation. This report also examines the administrative and international mechanisms that can support the implementation of wealth-related taxes. For internationally mobile families, those practical aspects may be just as important as the tax rules themselves.
6. Global and EU-wide coordination could reduce tax competition
“These voices and initiatives follow several proposals to implement wealth taxes based on a global or EU-wide coordinated approach put forward in the past decade... They also complement several national movements and proposals of the last few years advocating stronger wealth-related taxation, frequently suggesting an increase in taxes on the wealthy by (re-)introducing net wealth taxes.”
Page 20
Why this matters
The important words are “global or EU-wide coordinated approach.” Wealth taxation has traditionally been constrained by competition between jurisdictions: raise taxes too aggressively and wealthy residents or capital may move. International coordination potentially changes that equation by reducing the number of alternative jurisdictions available within a coordinated bloc.
Part II — Building the Infrastructure
The next set of passages is less about tax rates and more about the machinery needed to make wealth taxation work: broad tax bases, centralisation, third-party reporting and information exchange.
7. Temporary wealth taxes can become permanent
“Several countries introduced a wealth tax only temporarily to address budgetary challenges... sometimes, however, these taxes remained in place for a longer period than originally envisaged... or were eventually made permanent.”
Page 47
Why this matters
History shows that a tax introduced as an emergency or temporary measure does not necessarily remain temporary. For anyone evaluating long-term political risk, this is an important reminder that fiscal measures introduced during crises can become part of the permanent tax architecture.
8. One-off capital levies remain part of the policy toolkit
“One-off capital levies have been debated and proposed in a number of countries, their aim being to cover the budgetary costs of recent crises. They often feature relatively high tax rates and longer payment periods, as well as a one-off valuation of taxable wealth.”
Page 53
Why this matters
This goes beyond an annual wealth tax. A capital levy is a direct charge against accumulated wealth, historically associated with extraordinary fiscal circumstances. The report does not recommend that such a levy be imposed today, but its examination of the mechanism matters because governments facing severe fiscal pressures have repeatedly considered it.
9. Wealth taxes can reach far beyond cash and securities
“All the wealth taxes under consideration are or were, in principle, levied on broad tax bases, including financial wealth, real estate, and other wealth objects, particularly jewellery and artworks.”
Page 62
Why this matters
A genuine net wealth tax can reach considerably further than bank accounts and listed securities. Depending upon design, the taxable base may extend across property, investments and valuable personal assets. For wealthy families, the significance is the potential requirement to identify and periodically value a very broad portion of the family balance sheet.
10. Centralisation is presented as a way to protect wealth-tax revenue
“The most effective and least complex solution to protect revenue and distributional effectiveness would be full centralisation.”
Page 77
Why this matters
This recommendation arises from evidence that taxpayers can respond to differences between regional tax regimes by changing their residence. The proposed response is not greater jurisdictional competition but centralisation of taxing power, thereby reducing opportunities to move internally to a lower-tax region.
11. Third-party reporting is seen as essential
“Instead of relying solely on self-assessment and self-reporting from taxpayers, which offers ample opportunity for tax avoidance and evasion, comprehensive third-party reporting is required to mitigate wealth tax avoidance and evasion.”
Page 78
Why this matters
This is one of the report's most significant passages from a financial-privacy perspective. Effective wealth taxation is envisaged as relying not simply on what individuals report themselves, but on information independently supplied by financial institutions, government agencies and potentially other third parties.
12. Closing gaps in automatic information exchange is described as crucial
“Closing loopholes still present in their geographical range and the assets they cover appears to be a crucial prerequisite for enabling the effective implementation of net wealth taxes and capital taxes in general.”
Page 78
Why this matters
The direction is important: progressively broader automatic exchange of information, covering more jurisdictions and more categories of assets. For internationally diversified families, geographic diversification should therefore never be confused with secrecy. The report explicitly identifies gaps in international reporting coverage as obstacles to effective wealth taxation.
13. Wealth managers themselves could become part of enforcement
“Brumby and Keen (2018) suggest co-opting wealth managers in efforts to address aggressive tax planning by high net worth individuals, including by becoming whistleblowers.”
Page 78
Why this matters
This is unusually striking language. The report is citing an external proposal rather than issuing its own recommendation, but the idea being discussed is significant: professional advisers and wealth managers potentially becoming part of the tax-enforcement architecture rather than functioning solely as advisers to their clients.
Part III — The End of Financial Privacy?
This is where the report becomes particularly significant for anyone concerned with privacy, mobility and the growing technological capacity of tax authorities.
14. Tax liabilities could follow people after they emigrate
“As a countermeasure, the potential of ‘tail provisions' for taxpayers migrating abroad, such as exit taxes or a certain period after migration during which taxpayers are still liable for taxation in their former home countries, should be explored further.”
Page 79
Why this matters
This directly concerns freedom of movement. Changing tax residence would not necessarily terminate the former country's taxing claim immediately. A “tail” could allow taxation to follow an emigrant for a specified period after departure, while an exit tax could crystallise liabilities as the person leaves.
15. Artificial intelligence is explicitly identified as a tax-enforcement tool
“The potential of ongoing digitalisation of public administration and the spread of artificial intelligence should be exploited to reduce taxpayers' opportunities for wealth tax evasion.”
Page 79
Why this matters
This may be one of the most consequential sentences in the entire report. Wealth taxation becomes substantially easier to administer when governments can combine digitised financial records, asset valuations, reporting databases and AI-assisted analysis. The long-term issue is therefore not merely higher tax rates but dramatically greater state capacity to map and analyse private wealth.
16. Wealth-tax returns could eventually be pre-populated by the government
“Saez and Zucman (2019c) propose using modern information technology and having tax authorities prepopulate wealth tax returns with data on the market value of household assets, in order to reduce the possibility of tax evasion.”
Page 79
Why this matters
Consider the practical implication: the tax authority could potentially know the estimated market value of significant household assets before the taxpayer completes the return. That represents a fundamentally different information environment from traditional self-reporting.
17. Public disclosure of household wealth is cited as a compliance tool
“As the example of Norway shows, tax authorities' publication of data on household wealth and wealth tax liabilities may help reduce tax evasion.”
Page 79
Why this matters
For anyone who values financial privacy, this deserves particular attention. The report cites publication of household wealth and tax-liability information as a mechanism associated with greater compliance. That raises a very different issue from information being available privately to tax authorities: public disclosure of personal financial information.
18. Dedicated HNWI enforcement units are specifically recommended
“Tax administrations should establish dedicated units to deal with aggressive tax planning undertaken specifically by high-net-worth individuals.”
Page 79
Why this matters
HNWIs are being treated as a specialised enforcement category. Wealthy entrepreneurs and investors should expect increasingly sophisticated tax authorities with teams specifically trained to examine complex ownership structures, cross-border arrangements and sophisticated planning.
Part IV — Taxing Wealth Before It Is Realised
Perhaps the most fundamental conceptual shift in the report is the discussion of taxing asset appreciation before an asset has actually been sold.
19. Unrealised gains taxation would restrict existing planning strategies
“A recurrent tax on unrealised gains would restrict many of these strategies, and would reduce the system's vulnerability to political shifts that periodically reopen loopholes.”
Page 99
Why this matters
This is the fundamental conceptual shift behind taxing unrealised gains: tax can arise before an asset has been sold and before cash has actually been received. For founders whose companies have appreciated enormously on paper, property investors and holders of long-term growth assets, that distinction is crucial.
20. Private-business valuation is treated as a solvable design problem
“Scholars propose focusing on HNWIs, limiting accrual taxation to market-traded assets... using retrospective taxation for non-publicly traded assets... or applying formula-based valuation methods.”
Page 99
Why this matters
Private businesses are one of the obvious obstacles to taxing unrealised gains because no daily market price exists. The significance of this passage is that valuation difficulty is treated as a design problem to be solved, rather than necessarily as a reason not to impose the tax.
21. Governments have two distinct ways to tax accumulated wealth
“A recurrent net wealth tax is levied on the total wealth that an individual holds... By contrast, a recurrent tax on unrealised capital gains targets the annual change in the value of assets.”
Page 100
Why this matters
These are two fundamentally different routes to the same broad objective. One taxes the stock of accumulated wealth every year; the other taxes the annual increase in value even without a sale. A wealthy individual could therefore face policy discussions targeting either the wealth already accumulated or its future appreciation.
22. The policy question is increasingly which wealth tax to use
“A net wealth tax may be more suitable when the objective is long-term redistribution. An unrealised capital gains tax, on the other hand, may be preferable when the goal is to equalise the tax treatment of different forms of income.”
Page 101
Why this matters
The debate presented here is not simply whether accumulated wealth should face additional taxation, but which instrument is most appropriate for a particular policy objective. That is a materially different stage of the policy discussion.
Part V — Mobility, Inheritance and the Future
The final passages bring together succession, emigration and exit taxes — areas of particular importance to internationally mobile families.
23. Inheritance taxation could become a lifetime accounting system
“Full progressivity of a recipient-based inheritance tax can only be achieved if all gifts and inheritances that an individual receives during their lifetime, regardless of the donor, are subject to inheritance and gift taxation.”
Page 215
Why this matters
This concept potentially transforms inheritance taxation from a tax triggered primarily at death into a lifetime accounting system for intergenerational transfers. For wealthy families accustomed to making gifts progressively over decades, the implications could be substantial if such an approach were ever adopted.
24. Emigration may not end inheritance-tax exposure
“Tax avoidance through emigration of future donors or beneficiaries is another practice that can reduce inheritance tax revenue, but which can be tackled through appropriate tax design. In this respect, ‘tail provisions'... are important, as they can secure tax revenue by either extending tax liability for a certain time after emigration or through the application of exit taxes upon emigration.”
Page 195
Why this matters
This is particularly significant for internationally mobile families. The report explicitly discusses tax design intended to preserve inheritance-tax claims despite emigration. In other words, moving before a major intergenerational transfer need not necessarily end the previous country's taxing reach.
25. Taxpayer mobility is used as an argument for exit taxes
“If a country has a capital gains tax policy in place, it is highly possible that taxpayers would migrate to countries with lower or non-existent capital gains taxes to reduce their tax burden. This speaks in favour of complementing a capital gains tax with an exit tax policy.”
Page 299
Why this matters
For me, this is one of the most important passages in the entire report. It explicitly connects taxpayer mobility with the case for an exit tax. The logic is straightforward: if people can legally relocate to obtain a lower future tax burden, policymakers may seek to impose a tax consequence at departure.
What's The Bottom Line, Scott?
After reading all 327 pages of this report, I don't believe the biggest story is any single wealth tax, inheritance tax or exit tax.
The bigger story is the direction of travel.
History shows that governments rarely move from less information to more privacy, from broader powers to fewer powers, or from greater international cooperation to less cooperation.
Whether one agrees or disagrees with the policy direction described in this report is ultimately beside the point.
The more important question is whether successful entrepreneurs, investors and internationally mobile families are paying attention.
None of the ideas discussed in this report are, by themselves, evidence that a Europe-wide wealth tax is inevitable. Nor should this article be interpreted as legal, tax or financial advice. Rather, it is an invitation to understand the direction of the policy debate so that informed decisions can be made well before major changes occur.
Because those who understand change before it arrives are almost always in a better position than those who only react after the rules have changed.
Scott Oliver is a retired British writer and independent researcher living in Mauritius. A former Royal Marines Commando and former Wall Street investment professional, he has spent more than four decades living and working internationally across 14 countries. During that time, he worked extensively in international wealth management, cross-border asset protection, international business structuring and global residency planning.
Today, Scott's focus is no longer on managing money or providing professional advice. Instead, through MauritiusWealth.mu, he writes independent educational articles designed to help successful African business owners ask better questions, make better decisions and, when appropriate, identify the right expertise to help protect everything they have spent a lifetime building.
His articles are published solely for general educational and informational purposes and should not be regarded as legal, financial, tax, immigration, investment or other professional advice. Every business owner's circumstances are unique, and readers requiring professional assistance should always consult an appropriately qualified and licensed professional.