Disclaimer: This article is for informational purposes only and does not constitute legal, tax, or financial advice. Always consult qualified professionals before making decisions about your French property investments.
If your French property portfolio is worth more than €1.3 million, France wants a slice of it every year — and it doesn’t matter whether you live in Chelsea or Chamonix. The impôt sur la fortune immobilière (IFI), France’s annual wealth tax on real estate, applies to non-residents just as much as to residents, on any French property they own directly or indirectly. The good news: as a British investor, you’re only taxed on your French-located real estate, not your worldwide portfolio. The less-good news: the threshold is lower than most people realise, and a single well-located Paris apartment plus a Riviera résidence secondaire can push you over it faster than you’d expect.
Here’s everything British investors need to know about IFI for the 2026 filing season: who owes it, what counts, what doesn’t, how it’s calculated, how much it’ll cost you, and when to file.
What Is the IFI, and Why Should You Care?
The impôt sur la fortune immobilière (IFI) is France’s annual wealth tax on real estate. It replaced the older, much broader impôt de solidarité sur la fortune (ISF) in 2018 — a political trade-off in which President Macron narrowed the base to real estate only (dropping stocks, bonds, cash, art, and yachts from the taxable pool) but kept the rates broadly similar. The idea was to stop discouraging financial investment while keeping a visible symbolic tax on property wealth.
The IFI hits individuals (personnes physiques) whose net taxable real-estate patrimony exceeds €1.3 million on 1 January of the tax year — whether they are French tax residents or not. The net taxable figure is the gross value of your French real estate minus allowable debts. Once you cross that threshold, the tax is actually calculated starting from €800,000 (a quirk we’ll unpack below), using a progressive scale that runs from 0.5% up to 1.5% of the taxable slice.
Do Non-Residents Pay IFI? (Yes — But Only on French Property)
This is the single most important point for British investors, and it’s the one most people get wrong in both directions. Let’s be precise.
- If you are a French tax resident, IFI applies to your worldwide real estate — your flat in Lyon, your Yorkshire cottage, your Florida condo, the lot.
- If you are a non-resident (UK-domiciled British investor, for example), IFI applies only to French-located real estate — whether you own it directly or indirectly through shares in a property company. Your home in Surrey and your pension fund are irrelevant for IFI purposes.
There’s also a useful sweetener for British investors who relocate to France. If you transfer your tax residence to France after having lived abroad, you are — subject to conditions — taxed only on your French-located real estate for the first five years, even though you’re now a French resident. In other words, your UK cottage doesn’t enter the IFI base until year six. This is a meaningful planning opportunity if you’re considering a permanent move.
If you own your French property through a société civile immobilière (SCI) — as many British investors do — note that indirect ownership is captured too. You declare your share of the underlying French real estate at its market value. We covered the mechanics of SCI ownership in our complete guide to owning shares in a French SCI, and the formalities of setting one up in how to create a société civile in France.
The €1.3 Million Threshold: Easier to Hit Than You Think
The threshold is measured on 1 January of the tax year, net of debts, across the entire foyer fiscal (household). That last point catches people out. For IFI, the household pools the property of:
- a single person (unmarried, widowed, divorced, or separated); or
- a couple living together, regardless of marital regime — mariage, Pacs, or even concubinage notoire (publicly cohabiting).
The property of minor children whose assets you legally administer is included in your household’s base. Adult children who are fiscally attached to your income-tax return, however, are not part of your IFI household — they form their own IFI household if their personal taxable real-estate patrimony exceeds €1.3 million.
Crucially, the IFI household is not always the same as the income-tax household. Even unmarried partners in concubinage notoire must pool their property for IFI. For British investors who co-own a French property with a partner outside marriage, this means the pool counts both of your shares against the €1.3M threshold.
How fast can you hit €1.3M in French real estate? Faster than you’d think. A well-located two-bedroom in the 6th arrondissement of Paris can easily top €1.2M on its own. Add a small studio in Nice or a farmhouse in Provence, and you’re through the threshold before you’ve furnished either one. Our regional property guide has current price benchmarks for the main French markets.
What Property Is Taxable?
Broadly, every interest you hold in French real estate goes into the base — whether you live in it, let it out, or leave it empty. The official list (non-exhaustive) includes:
- Your primary residence, valued at 70% of market value thanks to a statutory 30% abatement.
- Other built properties, whether occupied personally or let out: houses, apartments, and their outbuildings (garages, parking spaces, cellars).
- Historic monuments (monuments historiques) that are privately owned.
- Property under construction on 1 January.
- Unbuilt land: terrains à bâtir, agricultural land, forests (with partial exemptions for the latter two — more on that below).
- Indirect real-estate holdings: your share of property held through any company or fund, including SCIs, SCPIs, OPCIs, and even real-estate-backed assurance-vie contracts (the so-called unités de compte immobilières).
- Real-estate assets that don’t meet the “professional asset” exemption conditions — see below.
The 30% abatement on the primary residence is one of the few generous features of IFI. If your main French home is worth €1.5M on the open market, you declare it at €1.05M. This alone can keep many households below the threshold, particularly single-home owners. But it only applies to one property per household, and only if it’s genuinely the place you habitually live.
What’s Exempt?
A handful of real-estate categories are outright exempt from IFI or benefit from generous partial exemptions.
Professional Real Estate (Biens professionnels)
Real estate that is necessary for your principal professional activity is fully exempt. The conditions are tight:
- the property must be used in an industrial, commercial, artisanal, agricultural, or liberal profession;
- the activity must be carried on by the property owner, their spouse, Pacs partner, concubin, or minor children under legal administration;
- the activity must be the taxpayer’s principal profession;
- the property must be indispensable to that activity.
Shares or stock in a company that directly holds the professional real estate are also exempt, provided the owner exercises their principal professional activity in that company.
For most British investors, this exemption won’t help — unless you run a French-based trade or consultancy from the premises. A buy-to-let investor does not, in principle, qualify, because buy-to-let is not considered a professional activity for IFI purposes unless it’s furnished, sufficiently large, and actively run as a loueur en meublé professionnel. Our LMNP guide covers the distinction between furnished lets and the (rarer, stricter) LMP regime.
Forests, Woodlands and Farmland
Forests, woodlands, and shares in groupements forestiers (forestry groupings) or groupements fonciers agricoles benefit from a 75% partial exemption, subject to holding period and management commitments. Long-term-leased farmland (biens ruraux loués à long terme) gets similar treatment. These are specialist asset classes and unlikely to be a feature of most British investors’ French holdings, but worth knowing about if you’re thinking of diversifying into groupements forestiers for estate-planning reasons.
What Debts Can You Deduct?
IFI taxes net patrimony, which means you can deduct debts linked to your taxable real estate from its gross value. Specifically, the following liabilities are deductible provided they exist on 1 January of the tax year:
- Acquisition debt on your real estate (your French mortgage, in other words).
- Debts for works of improvement, construction, reconstruction, or enlargement.
- Debts for upkeep (entretien).
- Property taxes owed on those assets (taxe foncière, for example).
- Acquisition debt on shares in property-holding companies, pro-rated to the value of the taxable real-estate assets inside that company.
For a British investor financing a French property with a euro-denominated mortgage — see our French mortgage guide for non-residents — this is straightforward: the outstanding capital on 1 January reduces your IFI base. Pure-interest-only loans and non-amortising structures get more scrutiny, particularly if used to suppress the IFI base artificially.
The 60% Cap on Deductible Debts
There’s an important anti-abuse rule for larger portfolios: if your gross taxable real estate plus taxable shares exceed €5 million, and your deductible debts exceed 60% of that gross value, then the portion of debt above the 60% threshold is only deductible at 50%. In plain English: the French taxman won’t let you leverage your way to a zero IFI base on a €10M portfolio. For smaller British portfolios this cap is rarely binding, but it’s a pinch point for high-net-worth buyers deploying heavy debt.
The Rates: A Progressive Scale
Once you’re subject to IFI, the tax is calculated on a sliced, progressive basis starting from €800,000 — not from €1.3 million. That’s the quirk we mentioned earlier. Crossing the €1.3M threshold is what makes you liable at all, but once you’re in, the calculation backfills from €800,001. Here is the full scale (barème) set out in article 977 of the code général des impôts:
| Slice of net taxable patrimony | Rate |
|---|---|
| €0 – €800,000 | 0% |
| €800,001 – €1,300,000 | 0.5% |
| €1,300,001 – €2,570,000 | 0.7% |
| €2,570,001 – €5,000,000 | 1% |
| €5,000,001 – €10,000,000 | 1.25% |
| Above €10,000,000 | 1.5% |
A Worked Example
Suppose a British couple owns a €1.8M apartment in Paris (the primary residence, so a €1.26M declared value after the 30% abatement), plus a €500,000 house in the Luberon held through an SCI. They have an outstanding French mortgage of €260,000 on the Paris flat. Their net taxable patrimony is:
€1,260,000 (Paris, post-abatement) + €500,000 (Luberon SCI share) − €260,000 (mortgage) = €1,500,000
They are over the €1.3M threshold, so IFI applies. The calculation, per the barème:
- First €800,000 × 0% = €0
- €800,001 to €1,300,000 (€500,000 slice) × 0.5% = €2,500
- €1,300,001 to €1,500,000 (€200,000 slice) × 0.7% = €1,400
- Total IFI: €3,900.
If the same couple had no mortgage, their base would be €1,760,000 and their IFI would be roughly €3,900 + (€260,000 × 0.7%) = €5,720. The debt deduction is worth almost €2,000 a year, which is why properly declaring your French mortgage matters.
The Décote: A Smoothing Mechanism at the Threshold
Without any smoothing, crossing €1.3M by €1 would suddenly cost you €2,500 of tax — a harsh cliff edge. France softens the bump with a décote (tapered discount) for taxable patrimonies between €1.3M and €1.4M. The formula is:
Décote = 17,500 − (1.25% × net taxable patrimony)
So at €1.3M, the décote is 17,500 − 16,250 = €1,250, offsetting most of the entry-level tax. At €1.4M, it’s 17,500 − 17,500 = €0 and tapers out. Above €1.4M, there’s no décote at all. The effect is to ease the transition into IFI rather than hit new entrants with a sudden full bill.
How to Reduce Your IFI
There are two principal levers for reducing your IFI bill legally, beyond proper debt deductions:
Charitable Giving
Gifts to qualifying public-interest organisations reduce your IFI by 75% of the amount donated, up to a maximum reduction of €50,000. This means giving €66,667 to an eligible charity yields a €50,000 IFI reduction — effectively, the French state pays three-quarters of your gift. Eligible recipients are typically foundations, recognised public-interest associations, and higher-education institutions. Gifts to European-based equivalents also qualify, declared on line 9NG of the 2042-IFI form.
The Plafonnement (Income Cap)
French tax residents benefit from a plafonnement that caps the combined total of their French and foreign income taxes plus IFI at 75% of worldwide income (net of professional expenses, including income exempt from income tax and amounts subject to prélèvement libératoire). It exists to stop the IFI from confiscating more than three-quarters of a taxpayer’s income in a low-earning year — the retiree-with-a-large-portfolio scenario.
Here’s the catch for British investors: Article 979-I of the CGI restricts the plafonnement to “le redevable ayant son domicile fiscal en France” — French tax residents only. If you’re UK-resident, you cannot claim it, even if your French property is your main asset and your worldwide income is modest. The only exception is the narrow “Schumacker non-resident” doctrine (EU/EEA residents whose income is 75%+ French-sourced), and post-Brexit that door is closed to UK residents. It’s one of the genuine downsides of holding French real estate as a non-resident: the IFI bill lands in full, uncapped against your UK income.
Declaring and Paying Your IFI
The IFI is declared and paid alongside your annual income tax return, not as a separate exercise. Here’s the workflow for the 2026 filing season (on your 2025-valued patrimony):
1. Which Form?
Two possibilities, depending on whether you have taxable French income:
- Form 2042-IFI (cerfa N°15798*09): used if you are also filing a standard French income-tax return (form 2042). The 2042-IFI is filed as an annex.
- Form 2042-IFI-COV (cerfa N°15864*09): used if you have no French taxable income to declare (for example, a British non-resident who owns a French holiday home but has no French-source rental income). The COV version is a simplified standalone form.
Online filing is now the default for anyone with internet access, regardless of revenu fiscal de référence. Paper filing is tolerated only if you genuinely cannot file online.
2. Where to File — Non-Residents Have a Dedicated Office
British non-residents do not file with their local Service des impôts des particuliers (SIP), because they don’t have one. Instead, they file with the dedicated non-resident tax office:
Service des impôts des particuliers non-résidents
10, rue du Centre – TSA 10 010
93 465 NOISY-LE-GRAND Cedex, France
Monaco residents file with a different specialist office in Nice. French tax residents file with their local SIP as normal.
3. Key Deadlines for IFI 2026
The deadlines depend on your filing method and your département of residence:
- Paper filing: 19 May 2026 (all filers).
- Online filing, zone 1 (départements 01 to 19, Monaco residents, and non-residents): 21 May 2026.
- Online filing, zone 2 (départements 20 to 54): 28 May 2026.
- Online filing, zone 3 (départements 55 to 976): 4 June 2026.
As a UK-based British investor with French property, you fall into zone 1 — 21 May 2026 is your deadline if you file online (which almost all non-residents can and should do, given the remote nature of their tax affairs).
4. Paying the Bill
You’ll receive a separate avis d’imposition for your IFI, distinct from your income-tax notice. Payment is typically due on or around 15 September of the tax year.
- Any IFI bill above €300 must be paid electronically — via your espace particulier on impots.gouv.fr or the app — from a SEPA-zone bank account.
- Bills of €300 or less can also be paid by TIPSEPA, cheque, cash, or card at a buraliste or approved paiement de proximité partner.
For non-residents with a UK bank account and no French account, the electronic payment requirement can be a headache. A SEPA-zone euro account — whether held with a French bank, a fintech like Wise or Revolut, or a Monaco institution — is effectively a practical necessity if your IFI bill exceeds €300. Our guide to moving GBP to EUR discusses the mechanics of holding euros as a UK resident.
The “Gérer Mes Biens Immobiliers” Service
Since 2 August 2021, impots.gouv.fr has offered a service called Gérer mes biens immobiliers (GMBI — “manage my real estate”) in your espace particulier. It lists every property registered to you in France, with characteristics (surface area, number of rooms, cadastral identifier). For British investors trying to reconcile what the French tax administration thinks they own versus what they actually own, GMBI is invaluable — it’s also how you now report occupancy status for taxe d’habitation purposes. Use it, and check that the data matches your records before declaring IFI.
The Practical Checklist for British Investors
- Value your French real estate at market value on 1 January 2026. Be realistic. The French tax authorities can challenge lowball valuations using comparable sales data from the Demande de valeur foncière (DVF) register.
- Apply the 30% abatement if one of the properties is your primary residence.
- Add your share of any SCI/SCPI/OPCI holdings at their proportional real-estate value (line 9CA on form 2042-IFI).
- Subtract outstanding French mortgage balances and any related acquisition / improvement / maintenance debts existing on 1 January.
- Apply the 60% cap on deductible debts if your gross real-estate wealth exceeds €5M.
- Check whether you exceed €1.3M net. If yes, file IFI. If no, nothing to do this year.
- Compute the IFI using the progressive barème from €800,000 onwards.
- Apply the décote if your net taxable patrimony is between €1.3M and €1.4M.
- Apply charitable-giving reductions (75% up to €50,000) if applicable.
- File online by 21 May 2026 via impots.gouv.fr (non-resident zone).
- Pay by 15 September 2026, electronically from a SEPA account for bills above €300.
Takeaway
The IFI is not usually a dealbreaker for British investors — for most people, it’s a 0.5% to 0.7% annual drag on patrimonies above €1.3M, comparable to a small management fee on the underlying asset. But it’s a recurring, highly visible cost that compounds over decades, and it’s one of the first things to factor into the acquisition arithmetic for a second home or high-end investment property in France. Forecast it into your cash-flow model from day one, hold the correct leverage to take full advantage of the debt deduction, and — if your portfolio is approaching €5M — take specialist advice on the 60% debt cap and on SCI structuring. Our step-by-step buying guide walks through the full cost stack, of which IFI is now a standing line item.
Frequently Asked Questions
Do British non-residents have to pay the French wealth tax on property (IFI)?
Yes, but only on real estate located in France — directly owned or held indirectly through a company such as an SCI. Your UK property and non-French assets are not in the IFI base for a British non-resident.
What is the IFI threshold for 2026?
€1.3 million of net taxable real-estate patrimony on 1 January 2026, measured across the entire IFI household (couple, Pacs partners, or concubins, plus minor children under legal administration).
When is the IFI filing deadline in 2026?
For non-residents filing online, the deadline is 21 May 2026. Paper filers have until 19 May 2026. Online filers in French départements 20–54 have until 28 May 2026, and 55–976 until 4 June 2026.
Is my mortgage deductible for IFI purposes?
Yes. The outstanding capital balance of a French mortgage on 1 January of the tax year is deductible from the gross value of the financed property. Debts for improvement, construction, and maintenance are also deductible. Be aware of the 60% deductibility cap if your gross real estate exceeds €5 million.
Does my primary residence count for IFI?
Yes, but with a 30% abatement on its market value. A primary residence worth €1.5M is declared at €1.05M. The abatement applies to one property only, and it must be your principal residence.
What if I move to France — do I pay IFI on my UK property?
For the first five years of French tax residence (subject to conditions), new residents are taxed only on their French-located real estate. From year six onwards, worldwide real estate enters the IFI base. This five-year window is a meaningful planning tool for anyone contemplating a permanent move from the UK to France.
Which form do I use — 2042-IFI or 2042-IFI-COV?
Use form 2042-IFI if you are also filing a standard French income-tax return (it attaches as an annex). Use form 2042-IFI-COV if you have no French taxable income — typically the case for British non-residents with only a French holiday home and no French rental income.
