IFI Explained for Americans: France's Real Estate Wealth Tax and the 5-Year Grace Period

If you are moving to France with a meaningful amount of property behind you, the IFI is the tax most likely to catch you off guard. The IFI (impot sur la fortune immobiliere) is France's real estate wealth tax: you become liable when the net taxable value of your property exceeds 1.3 million euros on 1 January, and once you cross that line the tax runs on a progressive scale up to 1.5 percent a year. The detail that changes everything for a new arrival is timing. For your first five years as a French tax resident, only your French property counts, and your home, rental, or vacation place in the United States stays out of the calculation. Understanding that window, and the official IFI rules that surround it, is what separates a smooth move from an expensive surprise. This article is for informational purposes only and does not constitute tax or legal advice. Tax rules are complex and change frequently: consult a qualified cross-border tax professional before making any filing or planning decisions.

Who owes the IFI, and on which properties

Whether the IFI touches you at all depends on two things: your tax residence on 1 January, and where your real estate sits. French tax residents owe the IFI on their worldwide real estate, while people whose tax home is outside France owe it only on property located in France. New arrivals get a distinct treatment for a limited period. Here is how the three situations compare:

Two points matter before we go deeper. First, nationality is irrelevant. A US citizen is treated the same as anyone else: what counts is tax residence and the location of the property, not the color of the passport. Second, the 1.3 million euro figure is a net number, measured after deducting eligible debts tied to the property. In our experience, this is where the first misunderstanding happens, because Americans tend to picture a threshold on the sticker value of what they own rather than on the value net of an outstanding mortgage.

What the IFI actually taxes, and what it leaves alone

The IFI is narrower than most newcomers assume, and that narrowness is usually good news. It replaced the older wealth tax (the ISF) in 2018, and the key change was the base: where the ISF taxed almost everything, the IFI covers only real estate. In practical terms, that means your apartment, house, land, and rental property are in, along with the real estate portion of shares you hold in property companies such as an SCI or an SCPI. Financial investments, cash, business assets used in your profession, art, and cars are all outside the tax base.

For an American arriving with a diversified portfolio, that distinction is worth reading twice. Your brokerage account, your retirement savings, and your US equities do not feed into the IFI at all. Only bricks and land do. This is one reason many wealthy movers end up thinking carefully about the mix between property and financial assets, and it connects directly to the separate question of where Americans can actually hold investments in France once they arrive.

A few features of the base are worth knowing because they change the number:

• Your main home gets a 30 percent reduction. The principal residence is valued at its market price on 1 January, then reduced by 30 percent, provided it is not held through a management company. For a household near the threshold, that single abatement can be the difference between owing the IFI and staying under it.

• Debt reduces the base. Loans used to buy, build, repair, or improve a taxable property are deductible from its value. An outstanding French mortgage on the property you just bought lowers the net figure the IFI is measured against.

• Property held through a company still counts. Owning through an SCI does not remove the real estate from the IFI; the shares are taxed on the fraction that represents property. The company is a holding structure, not a shield.

The five-year grace period most Americans have never heard of

This is the part of the IFI that rewards planning, and the part almost no one mentions before a move. France's tax code, in Article 964, gives people who move to France after living abroad a temporary exemption on their foreign real estate. If you were not a French tax resident during the five calendar years before the year you settle in France, you are taxed only on your French property, and your property abroad stays out of the calculation. The exemption is set out in the tax administration's own guidance on who is liable and which property counts and detailed further in the tax code's Article 964 commentary.

Here is how the clock actually runs:

1. You confirm you were not a French tax resident in the five calendar years before the year you establish domicile in France.

2. From the year you move, only your French real estate is assessed for the IFI. Your US home, your rental abroad, and any other foreign property are excluded.

3. That treatment continues every year until 31 December of the fifth year after the year you settle in France.

4. From the following year, if you are still a French tax resident, your worldwide real estate comes into the base under the normal rules.

A concrete illustration makes the timing clear. Someone who becomes a French tax resident in 2026 is taxed only on French property, then keeps that limited exposure through the IFI due for each year up to and including 2031, and moves to worldwide taxation from 2032. The rule applies whatever the reason for the move, whether professional relocation or retirement, and it is not lost by a temporary trip back abroad during the five years.

The practical consequence is large for anyone holding significant US property. During the window, only your French holdings are measured against the 1.3 million euro threshold, so a US home worth well over that figure has no IFI effect while you are inside the five years. What we see most often is that Americans discover this rule after the move rather than before, when it is too late to sequence a sale, a purchase, or a change in how a property is held. If you would rather map the timing precisely against the year you plan to establish residence, a first-year tax orientation call is the fastest way to line it up, and it pairs naturally with the broader work of deciding how to prepare your US finances before the move.

How the IFI is calculated: the threshold, the scale, and the 800,000 euro twist

The most counterintuitive feature of the IFI is that the entry threshold and the point where the tax starts biting are two different numbers. You become liable only when your net taxable real estate exceeds 1.3 million euros on 1 January. But once you are liable, the tax is calculated from 800,000 euros upward. In other words, crossing 1.3 million euros pulls the band between 800,000 and 1.3 million euros into the calculation as well. The scale, unchanged for years and declared each year on the 2042-IFI annex to your income tax return, works like this:

To see it in practice, take a net taxable estate of 2 million euros. The first 800,000 euros are taxed at 0 percent, the band from 800,000 to 1.3 million euros at 0.5 percent, and the band from 1.3 million to 2 million euros at 0.7 percent. That produces roughly 7,400 euros before any adjustment, an effective rate well under half a percent on the whole estate. The progressive structure means the headline top rate rarely reflects what a typical household actually pays.

Two adjustments soften the edges. A decote (a smoothing mechanism) applies to estates between 1.3 million and 1.4 million euros to prevent a brutal jump right at the threshold; it is calculated as 17,500 euros minus 1.25 percent of the net taxable value, so an estate of 1.35 million euros sees a reduction of 625 euros. Separately, for residents, the IFI added to income tax and social levies is capped at 75 percent of income, which protects households that are property-rich but income-light. In our experience, the 800,000 euro starting point is the single most common surprise: people who expected the tax to apply only to the slice above 1.3 million euros are caught out when the calculation reaches back to 800,000.

Where trusts and holding companies fit, and the 1.5 percent trap

For Americans, this is the section that quietly matters most, because the structures that are ordinary in US estate planning behave very differently under French tax law. A trust is not a screen for the IFI. Where real estate is held in a trust, French law generally treats the person who set it up as still owning the property for IFI purposes, valued at its market price on 1 January. The trust wrapper does not make the property disappear from the base.

There is a sharper edge behind that rule. If taxable real estate placed in a trust is not properly declared, France can apply a separate annual levy of 1.5 percent on the value of that property under Article 990 J of the tax code, a rate set at the top of the IFI scale. The tax administration's guidance on trusts and the IFI frames this levy as a backstop against non-declaration, and it substitutes for the IFI rather than stacking on top of it. The point for a newcomer is simple: a structure that works cleanly in the United States can create a French reporting obligation you did not anticipate, and these questions sit alongside your US FATCA and FBAR duties rather than replacing them.

Holding companies deserve the same caution. An SCI is a common and often sensible way to own French property, but its shares are counted for the IFI on their real estate component, and the same shares are central to French succession planning too. If you are weighing how to own and eventually pass on French property, it is worth reading how an SCI fits into French inheritance before you commit to a structure purely for tax reasons. What we see most often is Americans assuming that ownership through a company or a trust removes the property from the wealth tax entirely. It does not.

What the 2026 budget did and did not change

The IFI generated a lot of political noise during the 2026 budget process, and it is worth being precise about where things landed, because the headlines and the final law diverged. During the parliamentary debates in late 2025, the National Assembly voted in first reading to transform the IFI into a broader "tax on unproductive wealth," which would have reached beyond real estate to assets such as gold, crypto, luxury vehicles, yachts, and art, while the separate proposal for a minimum tax on very large fortunes (the so-called Zucman tax) was rejected. The Senate then adopted a different version of its own.

None of that survived into the law that actually applies. The version of the unproductive-wealth tax debated in first readings was not retained in the final 2026 finance law, so the classic IFI (real estate only, entry threshold at 1.3 million euros, progressive scale to 1.5 percent) remains what is in force for property held on 1 January 2026. Because this area has been reopened in successive budgets, treat the current rules as stable for now but not permanent, and verify the state of play before making an irreversible decision. If a reform returns in a future budget, the base, and not just the rate, is what could change.

Where Americans get stuck with the IFI

The IFI trips up newcomers in a handful of predictable ways, and most of them come from applying a US mental model to a French rule.

• Miscounting the five-year clock. The window runs to 31 December of the fifth year after you settle, not five years to the day from your arrival. In our experience, people who try to time a US property sale around the exemption often misjudge the last eligible year by twelve months.

• Forgetting that liability starts at 800,000 euros. As above, crossing 1.3 million euros brings the 800,000 to 1.3 million band into the calculation. Budgeting only for the slice above 1.3 million euros understates the bill.

• Over-valuing or under-valuing property. The IFI is self-declared on market value at 1 January. Under-valuing invites a later correction; over-valuing quietly overpays. What we see most often is an owner who plugs in a purchase price from years ago rather than a defensible current value.

• Overlooking deductible debt. An outstanding acquisition or renovation loan reduces the net base, yet plenty of new residents declare gross value and pay more than they owe.

• Assuming a trust or SCI removes the property. Both are counted. Treating either as a wealth-tax shield is the assumption that causes the most avoidable trouble.

Your IFI readiness check before you move

You can do a great deal of this preparation yourself, well before your first French tax return. Run through the following:

• Establish the year you will become a French tax resident, and confirm you were not French tax resident in the five preceding calendar years, so you know whether the exemption applies.

• List your real estate on both sides of the Atlantic with a defensible current market value for each.

• Separate French property from foreign property, since only the French side counts during the five-year window.

• Note any outstanding loans tied to those properties, because they reduce the net base.

• Flag anything held through a trust, an SCI, or an SCPI, and treat those as questions to resolve rather than settled facts.

• Check whether your net French real estate is anywhere near 1.3 million euros, and remember the 30 percent reduction on a main home before you conclude you are over the line.

• Diarize your fifth-year deadline (31 December of the fifth year after you settle) so the shift to worldwide taxation never arrives as a surprise.

When you can handle the IFI yourself, and when a consulting call earns its fee

If you are clearly under the threshold, or your only property is a single French home comfortably below 1.3 million euros after the 30 percent reduction, the IFI is mostly a matter of declaring correctly and moving on. The rules above are enough to do that with confidence.

The calculus changes when timing and structure are in play. If you hold substantial US property and want to sequence a sale or purchase around the five-year window, if any real estate sits in a trust or a company, or if your worldwide holdings will clearly exceed the threshold once the exemption ends, the decisions are worth getting right the first time. Working out the exact year your foreign property becomes taxable, valuing holdings defensibly, and deciding how to own French real estate can move the number materially, and mistakes here are expensive and slow to unwind. A first-year tax orientation call exists for exactly this: mapping your IFI exposure against your move date and your property mix, so you act on a plan rather than discover the rules on your first French return.

FAQ

Do I have to pay the IFI if I only own property in the United States?

It depends entirely on your French tax residence. A US citizen who is not a French tax resident owes the IFI only on real estate located in France, and only if that French property has a net value above 1.3 million euros, so US-only property owned by a non-resident is not taxed. Once you become a French tax resident, the five-year exemption keeps your US property out of the base until 31 December of the fifth year after you settle. From the following year, if you remain resident, your worldwide real estate, including your US home, comes into scope under the normal rules, subject to any relief provided by the France-US tax treaty, which is a point to confirm with a cross-border adviser.

Does buying a home in France automatically mean I owe the IFI?

No. Owning French property is only relevant if the net taxable value of your real estate crosses 1.3 million euros on 1 January. A single home below that figure, especially after the 30 percent reduction that applies to a main residence and after deducting any outstanding mortgage, does not create an IFI liability at all. The tax is aimed at larger real estate holdings, not at the fact of owning a home. If you are planning a purchase, it is worth understanding the wider costs of buying property in France as an American, of which the IFI is only one, and only above the threshold.

How exactly does the five-year exemption work for a new arrival?

France's tax code, in Article 964, exempts your foreign real estate from the IFI if you were not a French tax resident in the five calendar years before the year you move. During that period you are taxed only on your French property. The treatment runs until 31 December of the fifth year after the year you establish domicile in France, so someone settling in 2026 keeps the limited exposure through the IFI due up to and including 2031, then moves to worldwide taxation from 2032. It applies whatever the reason for the move, and a short trip abroad during the five years does not break it.

Is there professional help to plan around the IFI before I move?

Yes, and for anyone whose exposure turns on timing or structure it is usually worth it. The genuinely useful help is not filling in a form; it is deciding when to move, what to sell or keep, and how to hold French property, all before your first French tax return locks the picture in. A first-year tax orientation call is built for that, walking through your residence date, your worldwide real estate, and any trust or SCI holdings, and turning the rules above into a plan specific to your situation. You can absolutely handle a simple case yourself using this guide; the value of a call rises with the size and complexity of what you own.

Conclusion

The IFI is only a bad surprise if you meet it after the move. Understood in advance, it is a manageable and often narrow tax: it touches only real estate, it starts above 1.3 million euros of net property, and for your first five years in France it ignores everything you own abroad. The five-year window is the lever, and it is most valuable to the people who plan around it before they arrive.