{"id":2132450,"date":"2026-09-27T08:00:27","date_gmt":"2026-09-27T06:00:27","guid":{"rendered":"https:\/\/kohenavocats.fr\/2026\/09\/27\/british-owner-french-house-ifi-wealth-tax-valuation-challenge-brexit\/"},"modified":"2026-09-27T08:00:27","modified_gmt":"2026-09-27T06:00:27","slug":"british-owner-french-house-ifi-wealth-tax-valuation-challenge-brexit","status":"publish","type":"post","link":"https:\/\/kohenavocats.fr\/en\/2026\/09\/27\/british-owner-french-house-ifi-wealth-tax-valuation-challenge-brexit\/","title":{"rendered":"British Owner of a French House Worth Over \u20ac1.3 Million After Brexit: Paying IFI Wealth Tax, Valuing Your Home and SCI Shares, and Challenging the Bill"},"content":{"rendered":"

You bought the stone house in the Dordogne years ago, or you moved to France for good after Brexit and kept a flat in London, or the family SCI<\/a> holds the villa near Antibes. Then a letter arrives, or your accountant asks an awkward question: what about the IFI? The imp\u00f4t sur la fortune immobili\u00e8re<\/em>, France’s real-estate wealth tax, catches British owners on both sides of the Channel. If you live in France, it can reach your worldwide property once the total passes \u20ac1.3 million. If you still live in Britain, it reaches your French house and your shares in the family property company. And since Brexit you argue these points as a third-country national, with no European shield to hide behind. Two recent court decisions show how the fight plays out: in May 2026 the Paris civil court confirmed that non-residents holding French property through an SCI pay IFI and that their tax treaty does not save them, while in February 2025 the N\u00eemes appeal court confirmed a \u20ac5.2 million valuation because the owners could not prove their own declared figure was exaggerated. This article explains, in plain English with each French term translated, when you are liable, how the bill is calculated, what you can deduct, how to file, and how to challenge an assessment that gets it wrong.<\/p>\n

I. Are you liable to IFI on your French property after Brexit<\/h2>\n

A. You live in France: worldwide property counts and the household pays together<\/h3>\n

If your domicile fiscal<\/em> (tax home for income tax purposes) is in France, article 964 of the Code g\u00e9n\u00e9ral des imp\u00f4ts<\/em> (the French tax code) provides: \u00ab Sont soumises \u00e0 cet imp\u00f4t, lorsque la valeur de leurs actifs mentionn\u00e9s \u00e0 l’article 965 est sup\u00e9rieure \u00e0 1 300 000 \u20ac : 1\u00b0 Les personnes physiques ayant leur domicile fiscal en France, \u00e0 raison de leurs actifs mentionn\u00e9s au m\u00eame article 965 situ\u00e9s en France ou hors de France. \u00bb (CGI, art. 964<\/a>). Everything above \u20ac1.3 million counts: the French house, but also a flat you kept in Manchester or a villa in Spain, because the base for residents is worldwide. The official service-public.fr guidance, verified 6 March 2026, confirms the test in plain terms: you pay IFI when the taxable net value of your non-business property exceeds \u20ac1,300,000 at 1 January (service-public.fr, IFI: persons and property concerned<\/a>).<\/p>\n

Three household points matter for British families. First, the tax is charged per foyer fiscal<\/em> (tax household), not per person. The statute says: \u00ab Sauf dans les cas pr\u00e9vus aux a et b du 4 de l’article 6, les couples mari\u00e9s font l’objet d’une imposition commune. \u00bb (CGI, art. 964<\/a>). The same joint taxation applies to partners in a PACS (the French civil partnership) and to couples in acknowledged cohabitation. So a married couple adds both spouses’ property together before testing the \u20ac1.3 million line; two portfolios of \u20ac800,000 each are taxable jointly. If you married in England and are unsure which property regime owns the house, our guide on matrimonial regimes for British couples in France<\/a> walks through the answer. Second, property belonging to your minor children counts when you have legal administration of their assets (CGI, art. 965, 1\u00b0: CGI, art. 965<\/a>). Third, everything is assessed once a year: \u00ab Les conditions d’assujettissement sont appr\u00e9ci\u00e9es au 1er janvier de chaque ann\u00e9e. \u00bb (CGI, art. 964<\/a>). A sale completed on 15 January does not erase liability for that year; a purchase completed on 2 January does not create it.<\/p>\n

New arrivals get one soft landing. If you were not fiscally domiciled in France during the five calendar years before the year you settled, you are taxed for five years only on the property mentioned in paragraph 2 \u2014 broadly, French property \u2014 in the words of the statute, such newcomers \u00ab ne sont imposables qu’\u00e0 raison des actifs mentionn\u00e9s au 2\u00b0 \u00bb until 31 December of the fifth year after settling (CGI, art. 964<\/a>; service-public.fr<\/a>). After that window, worldwide property enters the base. If your residence position itself is disputed \u2014 France says you live here, HMRC says you live there \u2014 read our guide on the France-UK tie-breaker for dual tax residence<\/a> before you concede the worldwide base, and our walkthrough of the first French tax return<\/a> for the forms that fix your residence date.<\/p>\n

B. You still live in Britain: your French house and your SCI shares are taxable in France<\/h3>\n

Keeping your tax home in the United Kingdom does not move your French house out of the French tax net. Article 964 taxes \u00ab Les personnes physiques n’ayant pas leur domicile fiscal en France, \u00e0 raison des biens et droits immobiliers mentionn\u00e9s au 1\u00b0 de l’article 965 situ\u00e9s en France et des parts ou actions de soci\u00e9t\u00e9s ou organismes mentionn\u00e9s au 2\u00b0 du m\u00eame article 965\u00bb (CGI, art. 964<\/a>), with the shares counted only up to the slice of their value that represents those French bricks and mortar. The French administration’s own guidance for non-residents confirms the same test: net French property above \u20ac1,300,000 means IFI, subject to the applicable tax treaties (impots.gouv.fr, non-resident IFI guidance, updated 28 February 2025<\/a>). Only French property counts for you \u2014 your English home is invisible to the IFI \u2014 but every French asset counts, whether you hold it directly or through a company.<\/p>\n

Most British families hold through a SCI, the soci\u00e9t\u00e9 civile immobili\u00e8re<\/em> (a non-trading French property company, usually family-owned). The SCI does not shield the property from IFI. Article 965 brings into the base the \u00ab parts ou actions des soci\u00e9t\u00e9s et organismes \u00e9tablis en France ou hors de France \u00bb held by the taxpayer, but only \u00ab \u00e0 hauteur de la fraction de leur valeur repr\u00e9sentative de biens ou droits immobiliers d\u00e9tenus directement ou indirectement par la soci\u00e9t\u00e9 ou l’organisme \u00bb (CGI, art. 965<\/a>). In plain terms: your SCI shares count up to the slice of their value that represents French bricks and mortar. Shares in a company with a genuine industrial, commercial, craft, farming or professional activity escape only where your family holds less than 10% of the capital and voting rights \u2014 a classic family SCI holding a holiday villa never qualifies for that carve-out.<\/p>\n

The treaty argument fails too. On 5 May 2026 the Paris judicial court (9th chamber, 1st section, RG 24\/13163) rejected a claim by a Dutch-resident couple holding French property through an SCI who argued their treaty protected them. The court held that \u00ab la convention franco-n\u00e9erlandaise ne fait pas obstacle \u00e0 cette imposition \u00bb and concluded: \u00ab en l’absence de stipulation expresse contraire, la France conserve le droit d’imposer les biens immobiliers situ\u00e9s sur son territoire, notions int\u00e9grant les parts de SCI propri\u00e9taires d’immeubles, et ce m\u00eame lorsqu’ils sont d\u00e9tenus par des non-r\u00e9sidents \u00bb (TJ Paris, 5 May 2026, RG 24\/13163<\/a>). The reasoning turns on domestic law plus the absence of any contrary treaty clause, not on European Union membership, so it reads across directly to British owners: since Brexit you are third-country nationals, and no treaty exempts your French house or your SCI shares from IFI. Our companion guide on British family trusts and French tax<\/a> covers the parallel trap where a trust, rather than an SCI, holds the property.<\/p>\n

One family situation deserves its own warning: split ownership. Where a surviving parent holds the usufruit<\/em> (a lifetime right to use the property and take its income, roughly a life interest) and the children hold the nue-propri\u00e9t\u00e9<\/em> (the bare ownership underneath), article 968 provides: \u00ab Les actifs mentionn\u00e9s \u00e0 l’article 965 grev\u00e9s d’un usufruit, d’un droit d’habitation ou d’un droit d’usage accord\u00e9 \u00e0 titre personnel sont compris dans le patrimoine de l’usufruitier ou du titulaire du droit pour leur valeur en pleine propri\u00e9t\u00e9. \u00bb (CGI, art. 968<\/a>). The default is harsh: the whole full-ownership value sits in the surviving holder’s base. Only in listed cases \u2014 a surviving spouse’s statutory usufruct, a sale where the seller kept the usufruct for a stranger-buyer, a gift to a charity with reserved use \u2014 is the value split between holder and bare owners using the article 669 scale. British couples who organised a d\u00e9membrement<\/em> (split of ownership) for succession purposes must therefore re-check the IFI position: the parent who kept the usufruct may have crossed the \u20ac1.3 million line alone. Where the family tension behind the split is a second marriage, our guide on second spouses and children of a first marriage<\/a> explains the succession side.<\/p>\n

II. How the bill is built, declared and challenged<\/h2>\n

A. What your French property is really worth on 1 January, what comes off, and what rate applies<\/h3>\n

Valuation starts from a simple rule with a sharp edge. Article 973 I states: \u00ab La valeur des actifs mentionn\u00e9s \u00e0 l’article 965 est d\u00e9termin\u00e9e suivant les r\u00e8gles en vigueur en mati\u00e8re de droits de mutation par d\u00e9c\u00e8s. \u00bb (CGI, art. 973<\/a>). You value as if the property passed on death: the valeur v\u00e9nale<\/em> (open-market value) at 1 January. The N\u00eemes appeal court gave the working definition in an IFI case on 13 February 2025 (RG 23\/03035): \u00ab La valeur v\u00e9nale d’un bien est constitu\u00e9e par le prix qui pourrait en \u00eatre obtenu par le jeu de l’offre et de la demande dans un march\u00e9 r\u00e9el au jour de la mutation et elle est d\u00e9termin\u00e9e \u00e0 partir d’une comparaison tir\u00e9e de la cession de biens intrins\u00e8quement similaires. \u00bb (CA N\u00eemes, 13 February 2025, RG 23\/03035<\/a>). In that case the owners had declared land at their own figure, then tried to cut it after a development deal collapsed; the administration answered with comparable sales between September 2017 and December 2018 averaging \u20ac68.65 per square metre, and the court fixed the site at \u20ac5,219,556 for 2019 IFI, reversing the first judges. The lesson for British owners: an estate agent’s letter is not a valuation. Collect genuine comparable sales of similar properties, close in time and place, and keep them \u2014 the administration will bring its own.<\/p>\n

One relief softens the figure, but only for your main home. The same article 973 I continues: \u00ab un abattement de 30 % est effectu\u00e9 sur la valeur v\u00e9nale r\u00e9elle de l’immeuble lorsque celui-ci est occup\u00e9 \u00e0 titre de r\u00e9sidence principale par son propri\u00e9taire. \u00bb Only one property per jointly taxed household qualifies, and it must be your r\u00e9sidence principale<\/em> (the home where you actually live). A British owner living in Kent with a second home in Provence gets no 30% cut on the Proven\u00e7al house. A British resident living year-round in that house does \u2014 a \u20ac1.6 million main home enters the base at \u20ac1.12 million. Claiming the relief on the wrong property, or on business premises woven into the home, is exactly the kind of exemption claim courts throw out when the owner brings no proof: in February 2026 the Nancy judicial court dismissed an IFI taxpayer whose file contained only the extra assessments and complaint letters, holding \u00ab Ces \u00e9l\u00e9ments ne sont de nature \u00e0 \u00e9tablir ni la r\u00e9alit\u00e9, ni a fortiori la r\u00e9partition int\u00e9rieure des usages \u00bb given to the rooms (TJ Nancy, 13 February 2026, RG 23\/00802<\/a>).<\/p>\n

Debts come off next, within tight walls. Article 974 allows deduction of \u00ab les dettes, existantes au 1er janvier de l’ann\u00e9e d’imposition, contract\u00e9es par l’une des personnes mentionn\u00e9es au 1\u00b0 de l’article 965 et effectivement support\u00e9es par celle-ci, aff\u00e9rentes \u00e0 des actifs imposables \u00bb (CGI, art. 974<\/a>). Eligible debts are acquisition loans, genuine repair and maintenance costs borne by the owner, improvement, building and extension costs, and property taxes (not income tax on the rents). Three traps catch British owners. First, family and in-house loans: loans from yourself, your spouse, your PACS partner, your cohabiting partner or your minor children are never deductible, and loans from parents, other children, siblings, or from a company your family controls are deductible only if you prove normal arm’s-length terms \u2014 real deadlines, real amounts, real repayments. Second, bullet loans (in fine<\/em>, where capital repays only at the end) are not deducted at face value: each year you deduct the total minus a slice for each year elapsed, so a \u20ac600,000 twenty-year bullet loan counts only \u20ac570,000 after one year. Third, loans funding the SCI from its own shareholders are stripped out of the share valuation under article 973 II unless you prove the loan had no mainly fiscal purpose, and above \u20ac5 million of taxable property, debt exceeding 60% of the value counts only half for the excess unless you prove it was not mainly fiscal.<\/p>\n

The rate scale is short and the threshold has a cushion. Article 977 taxes the net base at 0% to \u20ac800,000, 0.50% from \u20ac800,000 to \u20ac1.3 million, 0.70% to \u20ac2.57 million, 1% to \u20ac5 million, 1.25% to \u20ac10 million and 1.50% above (CGI, art. 977<\/a>). Take a British-resident couple with a \u20ac1.5 million net base: nothing on the first \u20ac800,000, \u20ac2,500 on the next \u20ac500,000, \u20ac1,400 on the last \u20ac200,000 \u2014 a \u20ac3,900 bill. Just over the line, the d\u00e9cote<\/em> (smoothing relief) applies: \u00ab le montant de l’imp\u00f4t calcul\u00e9 selon le tarif pr\u00e9vu au tableau du 1 est r\u00e9duit d’une somme \u00e9gale \u00e0 17 500 \u20ac-1,25 % P, o\u00f9 P est la valeur nette taxable du patrimoine. \u00bb At \u20ac1.35 million that relief is worth \u20ac625. Two further reducers exist. Gifts to research bodies, recognised charities and similar organisations give a credit of \u00ab dans la limite de 50 000 \u20ac, 75 % du montant des dons en num\u00e9raire \u00bb (CGI, art. 978<\/a>). And residents of France \u2014 only them \u2014 can invoke the cap of article 979: \u00ab L’imp\u00f4t sur la fortune immobili\u00e8re du redevable ayant son domicile fiscal en France est r\u00e9duit de la diff\u00e9rence entre, d’une part, le total de cet imp\u00f4t et des imp\u00f4ts dus en France et \u00e0 l’\u00e9tranger au titre des revenus et produits de l’ann\u00e9e pr\u00e9c\u00e9dente, calcul\u00e9s avant imputation des seuls cr\u00e9dits d’imp\u00f4t repr\u00e9sentatifs d’une imposition acquitt\u00e9e \u00e0 l’\u00e9tranger et des retenues non lib\u00e9ratoires et, d’autre part, 75 % du total des revenus mondiaux nets de frais professionnels de l’ann\u00e9e pr\u00e9c\u00e9dente, apr\u00e8s d\u00e9duction des seuls d\u00e9ficits cat\u00e9goriels dont l’imputation est autoris\u00e9e par l’article 156 \u00bb (CGI, art. 979<\/a>). A British owner still resident in the UK, taxed only on French property, gets the rates and the gifts credit but never the cap \u2014 a structural reason the bill bites harder from London than from Lyon.<\/p>\n

B. How to file the return from London or Lyon and how to fight an assessment<\/h3>\n

IFI is a self-assessed tax: you declare, then the administration can check. Article 982 I requires: \u00ab Les redevables mentionnent la valeur brute et la valeur nette taxable des actifs mentionn\u00e9s \u00e0 l’article 965 sur la d\u00e9claration annuelle pr\u00e9vue \u00e0 l’article 170 \u00bb, and \u00ab Ils joignent \u00e0 cette d\u00e9claration des annexes conformes \u00e0 un mod\u00e8le \u00e9tabli par l’administration, sur lesquelles ils mentionnent et \u00e9valuent les \u00e9l\u00e9ments de ces m\u00eames actifs. \u00bb Spouses and PACS partners must sign jointly (CGI, art. 982<\/a>). In practice, residents file form 2042-IFI with the yearly income return and its annexes valuing each asset. Non-residents file the same forms to the dedicated non-residents’ tax office (the SIPNR, 10 rue du Centre, TSA 10010, 93465 Noisy-le-Grand CEDEX); if you file no French income return at all, use the standalone 2042-IFI-COV form with its annexes, and pay online once the bill exceeds \u20ac300 (impots.gouv.fr, non-resident IFI guidance<\/a>; impots.gouv.fr, form 2042-IFI<\/a>). File even when the calculation is close: the return starts the limitation clock, while silence invites an ex officio assessment built on the administration’s comparables rather than yours. British landlords already filing French rental declarations will find the rhythm familiar \u2014 see our guide on UK rental income declared in France<\/a> \u2014 and owners who also pay the local bill should keep the two taxes distinct with our guide on taxe fonci\u00e8re for British owners<\/a>.<\/p>\n

Challenges turn on proof, and the burden points both ways depending on who attacks whose figure. If you declared a value and later claim it was exaggerated, you carry the burden. The N\u00eemes court applied article R.194-1 of the tax procedure book: once the taxpayer agreed or stayed silent and then complains, \u00ab il peut obtenir la d\u00e9charge ou la r\u00e9duction de l’imposition, en d\u00e9montrant son caract\u00e8re exag\u00e9r\u00e9. \u00bb The owners there failed \u2014 \u00ab les intim\u00e9s sont d\u00e9faillants dans l’administration de la preuve qui leur incombe \u00bb \u2014 and their \u20ac7.6 million declared figure became a \u20ac5.2 million court-fixed value with costs and \u20ac3,000 under article 700 (CA N\u00eemes, 13 February 2025, RG 23\/03035<\/a>). Think twice, then, before signing a high figure to speed a mortgage or a sale: your own declaration is Exhibit One against you. If instead the administration attacks your valuation, the burden flips to them. In December 2024 the Paris appeal court (P\u00f4le 5, chamber 10, RG 22\/12469) confirmed a first-instance judgment holding \u00ab que l’administration fiscale ne rapporte pas la preuve du caract\u00e8re insuffisant des \u00e9valuations faites par Monsieur [B] des parts sociales dont il \u00e9tait propri\u00e9taire au titre de sa d\u00e9claration \u00bb, and it closed with \u00ab Confirme le jugement entrepris en toutes des dispositions \u00bb, ordering full discharge of the extra assessments and \u20ac3,000 under article 700 (CA Paris, 16 December 2024, RG 22\/12469<\/a>). That case concerned SCI shareholdings under the former solidarity tax, but the method \u2014 market value tested against comparables, insufficiency to be proved by whoever alleges it \u2014 is exactly the method article 973 I now commands for IFI.<\/p>\n

The practical file, then, has five folders. First, a valuation pack at each 1 January: comparable sales of similar properties, the notaire’s estimate, photographs and diagnostics showing defects that lower value, and the SCI accounts with the property-to-total-assets ratio for the share fraction. Second, the debt pack: loan offers, amortisation tables, proof the debt existed at 1 January and that you personally bear it, and for any family or company-linked loan, written arm’s-length terms with actual repayments. Third, the relief pack: proof you actually occupy the main home, charity receipts for the 75% credit, and for French residents the income computation behind the 75% cap. Fourth, the filing pack: returns, annexes, proof of sending to the SIPNR where relevant. Fifth, the challenge pack: the assessment, a quantified r\u00e9clamation<\/em> (formal claim to the administration) filed in time, and then, if rejected, proceedings before the judicial court \u2014 the forum that decided the Paris, Nancy, Carpentras and N\u00eemes cases above. A win can also earn moratory interest on the discharged sum, as the Carpentras court ordered a \u20ac42,045 discharge \u00ab assorti des int\u00e9r\u00eats moratoires institu\u00e9s par l’article L.208 du Livre des proc\u00e9dures fiscales \u00bb (CA N\u00eemes, 13 February 2025, RG 23\/03035<\/a>). Start the paper trail before the administration writes, answer each line of any reassessment with the article it offends, and never sign a figure you cannot defend with comparables.<\/p>\n

Conclusion<\/h2>\n

IFI follows the British owner, not the other way round. Live in France and your worldwide property counts once the household passes \u20ac1.3 million, with only a five-year window taxing French assets alone. Live in Britain and your French house plus the French-property slice of your SCI shares count, with no treaty escape \u2014 the Paris court of May 2026 said so to non-resident SCI holders in terms that apply fully to Britons. Value is market value at 1 January proved by comparables of similar properties; the 30% cut belongs only to the home you actually occupy; debts count only if they existed at 1 January, relate to taxable assets and survive the family-loan and bullet-loan traps; the scale runs 0.50% to 1.50% with a smoothing relief just above the threshold; gifts cut the bill by 75% within \u20ac50,000; and the 75%-of-income cap belongs to French residents alone. File on 2042-IFI with full annexes, to the non-residents’ office if you live in the UK, and challenge with numbers: whoever attacks a valuation must prove it, whether that is you against your own declared figure or the administration against yours. Build the five folders now and the bill becomes a calculation you control rather than a letter you fear.<\/p>\n","protected":false},"excerpt":{"rendered":"

IFI wealth tax follows British owners on both sides of the Channel: worldwide property if you live in France, French house and SCI shares if you live in Britain. 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