There is a particular irony in the relationship between France and Monaco. The two jurisdictions are separated by little more than a few kilometres, yet for a wealthy investor they can represent very different tax environments.

For someone with significant real estate wealth, the distinction is particularly important.

France does not have a general wealth tax on all forms of personal wealth. It has the Impôt sur la Fortune Immobilière, or IFI — a tax specifically targeting real estate wealth.

For investors with substantial property portfolios, this can become an important factor in deciding where to establish tax residence.

And this is where Monaco becomes particularly interesting.

France Taxed Wealth Differently

France replaced its former wealth tax, the ISF, with the IFI in 2018.

The change was significant.

The tax base was narrowed from overall net wealth to taxable real estate assets and certain interests in entities holding real estate.

The principle, however, remained.

France continues to impose an annual wealth tax on substantial real estate holdings.

For 2026, the IFI threshold remains €1.3 million of net taxable real estate wealth.

The rates are progressive, beginning at 0.5% and rising to 1.5% for the portion of taxable wealth above €10 million.

This is not an insignificant consideration for someone whose wealth is concentrated in property.

The €1.3 Million Number Is Not the Whole Story

The €1.3 million threshold can be misleading.

It does not mean that only the value above €1.3 million is taxed.

Once a taxpayer crosses the threshold, the progressive scale applies from €800,000.

The current scale is:

€800,000 to €1.3 million — 0.5%

€1.3 million to €2.57 million — 0.7%

€2.57 million to €5 million — 1%

€5 million to €10 million — 1.25%

Above €10 million — 1.5%.

There is also a limited reduction for estates between €1.3 million and €1.4 million.

The important point for investors is therefore not simply whether they own more than €1.3 million of property.

It is how their entire property balance sheet interacts with the tax.

France Still Attracts Property Capital

This does not mean France is unattractive to property investors.

Quite the opposite.

France has some of the world’s most desirable residential and commercial real estate.

Paris, the Côte d’Azur, the Alps and other regions continue to attract international capital.

The issue is that the investment return cannot be considered independently from the tax structure.

A €10 million property portfolio producing a particular rental yield is one investment proposition.

The same portfolio held by an individual whose tax residence creates an annual wealth-tax liability is another.

The asset has not changed.

The investor’s net return has.

Leaving France Does Not Make French Property Disappear From the Tax Calculation

This is one of the most important points for international investors.

Moving out of France does not automatically eliminate French property wealth tax.

A non-resident can still be liable for IFI on French real estate.

French tax authorities specifically state that non-residents remain subject to IFI on French property and relevant property interests once the €1.3 million threshold is exceeded.

This creates an important distinction.

Moving to Monaco does not make French real estate invisible to the French tax system.

It changes the investor’s wider tax position.

That distinction matters.

The Monaco Investor Has a Different Calculation

Consider an investor with €20 million of wealth.

Suppose €10 million is held in French residential property and the remaining €10 million is held in financial assets, private equity and other investments.

The decision to live in France rather than Monaco can have a very different economic consequence.

The French system focuses specifically on the property component.

The investor therefore has to consider not simply:

Where should I live?

but:

Where should I live, and where should I hold my assets?

That is a very different question.

Monaco’s Attraction Is Not Simply “No Tax”

Monaco’s appeal is often reduced to one sentence: there is no personal income tax.

That is true for most residents, subject to the special rules applicable to French nationals under the 1963 Franco-Monegasque arrangements. Monaco’s own government states that individuals who are not covered by that arrangement generally are not liable to personal income tax in Monaco.

But the more interesting proposition is broader.

Monaco combines its tax environment with proximity to France, an established financial centre, private banking, professional services, security and a concentrated community of international wealth.

For a wealthy investor, these factors can be more important than a simple comparison of headline tax rates.

The French Investor Has an Even More Complicated Question

For a French national considering Monaco, the analysis becomes more complicated.

French nationals resident in Monaco are subject to specific provisions under the 1963 convention and are not simply treated in the same way as other Monaco residents.

French tax authorities expressly note that French nationals who are tax residents of Monaco are liable for IFI under the same conditions as French tax residents.

This is a crucial distinction.

Monaco is not a universal escape from French taxation.

Nationality, residence, source of income, asset location and the applicable treaty framework all matter.

For serious investors, these questions have to be resolved before a move is made.

The Real Difference Is Real Estate Concentration

The IFI becomes particularly relevant when wealth is concentrated in property.

This creates an interesting investment question.

Should a wealthy investor own €20 million of residential real estate?

Or should the same €20 million be divided between property, private equity, operating businesses, listed securities and other alternative assets?

The tax system is only one part of that decision.

But it can influence the answer.

This is one reason why wealth management and tax planning are increasingly becoming integrated.

The Family Office Thinks Differently

A family office does not normally look at residence in isolation.

It looks at the entire balance sheet.

Where is the family resident?

Where are the businesses?

Where is the property?

Where are the investment managers?

Where are the private equity investments?

Where are the trusts, foundations or holding companies?

Where will the next generation live?

And what happens when the family eventually sells its assets?

The IFI is therefore not merely a tax calculation.

It can become one variable in a much larger capital-allocation decision.

Real Estate Becomes More Expensive When It Is the Wrong Asset

This is perhaps the broader lesson.

Real estate is often treated as a permanent store of wealth.

But for an internationally mobile investor, the location and structure of the property can materially affect its after-tax return.

A property yielding 3% before tax is not necessarily a 3% investment.

The investor needs to consider acquisition taxes, financing, maintenance, income tax, capital gains taxation, wealth taxation and succession.

The property may still be an excellent investment.

But it needs to be analysed as an investment rather than as a lifestyle purchase.

Monaco Changes the Equation

This is where Monaco has an unusual position.

An investor can live within minutes of some of Europe’s most expensive property markets while maintaining a very different personal tax environment.

The French Riviera does not disappear.

Neither does French real estate.

What changes is the investor’s jurisdictional position.

This makes Monaco particularly interesting for entrepreneurs, family offices and investors whose wealth is large enough for annual taxation of property to become economically meaningful.

The €10 Million Investor

At €1 million of wealth, tax residence may be secondary to investment performance.

At €10 million, it becomes more relevant.

At €50 million or €100 million, it can become a central part of the investment strategy.

The larger the balance sheet, the more expensive small structural differences can become.

A difference of even 1% per year can represent €100,000 on €10 million.

Over ten years, the difference becomes substantial.

This is why wealthy investors increasingly analyse residence in the same way they analyse an investment.

But Tax Is Not Everything

There is a danger in reducing Monaco to a tax calculation.

The investor still has to live somewhere.

Family considerations matter.

Schools matter.

Healthcare matters.

Business access matters.

Travel matters.

Security matters.

Banking and investment infrastructure matter.

Succession matters.

And perhaps most importantly, the residence needs to be genuine and sustainable.

A paper residence is not a wealth-management strategy.

France Still Has an Enormous Economic Advantage

France should not be underestimated.

It has deep capital markets, excellent infrastructure, major companies, world-class universities, culture and one of Europe’s largest economies.

The issue is not whether France is a good country in which to invest.

It is.

The question is whether France is the optimal place in which every wealthy investor should also be tax resident.

That is a different proposition.

Monaco Is Competing With a System, Not Just a Tax Rate

This is what makes the Monaco model particularly interesting.

Monaco is not competing simply by saying that France has IFI.

It is competing by offering a different combination of taxation, proximity, security, wealth management and lifestyle.

Switzerland offers another combination.

Italy offers another.

The UAE offers another.

Cyprus offers another.

The international investor increasingly has a menu.

The Investment Decision Is Becoming Jurisdictional

This is the broader trend running through European wealth management.

Investors used to decide where to invest and then deal with taxation.

Increasingly, they are reversing the process.

They ask where they should live.

They then ask how that residence affects their assets.

Then they decide how the portfolio should be structured.

Residence, taxation and capital allocation are becoming interconnected.

The Monaco Investor

For an investor with significant French real estate, Monaco therefore deserves to be analysed seriously.

Not because Monaco eliminates every French tax.

It does not.

Not because moving across the border automatically changes every tax consequence.

It does not.

But because the difference between being resident in France and being genuinely resident in Monaco can materially change the economics of a large international balance sheet.

The question is no longer simply:

France or Monaco?

It is:

Where should the investor live, where should the investor invest, and how should the two decisions fit together?

That is a much more sophisticated question. And for Europe’s wealthiest investors, it is increasingly the question that matters.