You bought a holiday flat in Nice, a stone cottage in the Dordogne or a family house in Brittany years ago, you still live in Britain, and every spring a French tax form seems to ask for more. Since Brexit you are a third-country national in France, and one question keeps coming back from British owners: do I owe the French real-estate wealth tax, the impôt sur la fortune immobilière, known as IFI, on a home I only occupy a few weeks a year, how is it calculated, and what can I do if the bill looks wrong? The short answer is that IFI does not depend on nationality or on how often you stay. It depends on your tax domicile (domicile fiscal, the country whose tax residence rules claim you), on the net value of your French property rights on 1 January, and on a threshold of 1,300,000 euros. Below that figure you owe nothing and, as the French tax administration confirms in its English-language guidance for non-residents, only owners above that figure must file a return the following year. Above it, a progressive scale applies from the first euro of the first band, debts can be deducted under strict conditions, and the 2008 Franco-British double tax treaty (convention fiscale, the bilateral treaty that allocates taxing rights) offers no credit mechanism for this particular tax. This guide explains, for a British reader, who is liable after Brexit, what enters the taxable base, how to file and pay from the United Kingdom, and how to challenge an incorrect assessment before the French courts, with the exact statutory wording in each case.

I. Do you owe IFI on your French second home when you live in Britain?

A. Who counts as liable, and where the 2008 treaty leaves you

The starting point is Article 964 of the French General Tax Code (Code général des impôts, usually shortened to CGI, the main French tax statute). It creates “un impôt annuel sur les actifs immobiliers désigné sous le nom d’impôt sur la fortune immobilière”, an annual tax on real-estate assets called the real-estate wealth tax. Liability then splits in two. French tax residents are taxed on worldwide qualifying assets, while non-residents are taxed only on French assets: “2° Les personnes physiques n’ayant pas leur domicile fiscal en France, à raison des biens et droits immobiliers mentionnés au 1° de l’article 965 situés en France et des parts ou actions de sociétés ou organismes mentionnés au 2° du même article 965 , à hauteur de la fraction de leur valeur représentative de ces mêmes biens et droits immobiliers.” In plain English, if your tax home (domicile fiscal) is in Britain, France can still tax you, but only on real property and real-property rights situated in France, plus shares to the extent that their value represents French real estate. Your house in Kent, your London flat and your British savings are invisible to IFI. Your cottage in the Dordogne is not. The assessment date is fixed by the same article: “Les conditions d’assujettissement sont appréciées au 1er janvier de chaque année.” Everything is photographed on 1 January: sell on 2 January and you remain liable for the whole year; buy on 2 January and liability starts the following year.

Three household points follow directly from the statute and the administration’s published doctrine (doctrine administrative, the tax authority’s official interpretation gathered in the BOFiP, the online Bulletin officiel des finances publiques). First, the 1,300,000 euro threshold applies to the household’s net taxable French property, not to each owner separately: married couples are taxed jointly except in the separation cases listed at Article 6 of the Code, and the same joint taxation applies to civil partners under a PACS (pacte civil de solidarité, the French registered partnership) and to couples in established cohabitation. Two British co-owners of a 2,000,000 euro Provençal villa who are married therefore face one IFI bill, not two half-thresholds. Second, the property of minor children counts when the parents hold legal administration of it, which matters for families who put a French flat partly in a child’s name. Third, the tax authority confirms that the charge for non-domiciled persons starts from ownership on 1 January of taxable property as defined by Article 965 but limited to French buildings and rights, with assets taken in the composition and value established on the first day of the tax year. A valuation dispute is therefore always argued at 1 January values, never at sale or probate values from another date.

Brexit did not rewrite any of this, but it removed the European safety nets around it. Before 2021 a British owner was an EU citizen with EU-portable health cover, EU passporting for advisers and, above all, the psychological comfort of being inside the single market. For IFI none of that ever mattered, because IFI has always applied to third-country owners: Americans, Australians and now Britons are treated exactly like any other non-resident. What Brexit did change is the background. British owners now need visas for long stays, hold a separate residence status, and deal with a French administration that classifies them as non-EU. That classification feeds small practical frictions, from opening the online tax account to getting documents accepted, which part II addresses. It does not change the tax base.

The treaty question deserves a careful answer because British owners often assume the 2008 Franco-British double tax convention protects them. Its official title, published by the British government, covers the avoidance of double taxation and the prevention of fiscal evasion with respect to taxes on income and on capital gains. Article 2, headed taxes covered, then lists for the United Kingdom Income Tax, Corporation Tax and Capital Gains Tax, and for France income tax, corporation tax, the social contribution on corporation tax, payroll tax and the two social contributions, CSG and CRDS. No wealth tax appears on either list. The consequence is direct and must be stated plainly: the treaty’s machinery for eliminating double taxation, including its tax-credit article, operates only within the taxes it covers, so there is no treaty procedure for crediting French IFI against a British tax, and no treaty ceiling on the French charge. France taxes under its domestic statute, and the treaty does not second-guess it. This is also why currency or timing mismatches have nowhere to go: IFI simply sits outside the convention.

Case law confirms how seriously French courts take the treaty-versus-statute boundary for non-residents’ French-property wealth taxation. Under the former wealth tax that IFI replaced, the commercial chamber of the Court of Cassation (Cour de cassation, France’s supreme court for civil and tax penalty matters) dismissed a taxpayer’s appeal, labelled rejet, in a dispute between a Russia-domiciled individual and the tax administration over shares whose value reflected French real estate held through intermediate companies: Court of Cassation, commercial, financial and economic chamber, 6 May 2026, appeal No K 24-22.185, decision No 211 F-B, published in the Court’s Bulletin (ECLI:FR:CCASS:2026:CO00211). The Court restated the old Articles 885 A, 885 D and 750 ter of the Code, under which non-domiciled persons were taxable on property situated in France and indirect holdings through companies were attributed to the individual, and it interpreted the allocation provisions of the applicable bilateral convention strictly against domestic-law shortcuts. The ISF (impôt de solidarité sur la fortune, the former all-asset wealth tax abolished with effect from 2018) is gone, but the method survives into IFI: treaties prevail over domestic law, they are read literally, and holding French bricks through one or two companies does not make them disappear. For a British owner this is a warning with a precise shape. Owning through a British company, an SCI (société civile immobilière, the French family property company) or a chain of the two changes the calculation mechanics, examined below, but it does not change the principle that France taxes the underlying French land and buildings.

One final scope point helps British families who moved recently. New arrivals who transfer their tax domicile to France after at least five calendar years domiciled abroad are taxed for the first five years only on property situated in France, as the public service portal service-public.fr confirms: new arrivals who transfer their tax domicile to France after at least five calendar years domiciled abroad are taxed for five years only on property and real-estate rights situated in France. The mirror matters too. A British reader who left France for Britain and kept a French flat becomes, from the departure year, a non-resident taxable only on that flat, while worldwide assets drop out. Readers wrestling with the residence boundary itself, the mid-year move, the tie-breaker and the first French return will find that neighbouring question treated in depth in the companion guide on moving mid-year and tax residence, which pairs naturally with this one. Where the family vehicle is a trust rather than direct ownership, the dedicated analysis of British family trusts and IFI declaration completes the picture, because the administration taxes trusts through their own specific paragraphs: a non-domiciled individual is likewise taxed on French buildings and rights held through special holding arrangements such as trusts, fiducies (the French statutory fiduciary arrangement), unit-linked life assurance, and leasing structures. Direct ownership, the subject of this article, is simpler, and it is to its valuation that we now turn.

B. What goes into the taxable base, and what reduces it

The base (assiette, the taxable base) is defined by Article 965: “L’assiette de l’impôt sur la fortune immobilière est constituée par la valeur nette au 1er janvier de l’année : 1° De l’ensemble des biens et droits immobiliers appartenant aux personnes mentionnées à l’article 964 ainsi qu’à leurs enfants mineurs, lorsqu’elles ont l’administration légale des biens de ceux-ci”. Net value means market value minus qualifying debts, and the rest of the article extends the base to shares in companies and bodies, French or foreign, “à hauteur de la fraction de leur valeur représentative de biens ou droits immobiliers détenus directement ou indirectement”, to the extent their value represents directly or indirectly held taxable real estate. Three consequences follow for British owners. First, a London-owned French flat held through an English limited company or a French SCI is caught through the share fraction, with a statutory coefficient comparing the real market value of the taxable buildings to total company assets. Second, operating companies in which the household holds less than 10 percent of capital and voting rights are disregarded, so a small portfolio of shares in a French trading company does not drag its business premises into your IFI. Third, property used in the operating business of the company that holds it is carved out. The administration’s doctrine adds the practical detail for opaque structures: a non-domiciled person is caught on French buildings held through entities without legal personality and through co-ownership property companies, and on shares whether the issuing entity sits in France or abroad. Good faith can protect a taxpayer who genuinely could not obtain the data to compute an indirect fraction, but that shelter evaporates where the household controls the company or reserves its use, which is exactly the position of most British family SCIs holding a single holiday home.

Valuation is where British second-home owners most often overpay or underpay. The rule sits in Article 973: assets are valued under the death-duty rules, and then comes the famous reduction: “un abattement de 30 % est effectué sur la valeur vénale réelle de l’immeuble lorsque celui-ci est occupé à titre de résidence principale par son propriétaire. En cas d’imposition commune, un seul immeuble est susceptible de bénéficier de l’abattement précité.” A 30 percent reduction applies to the real market value of a building occupied as the owner’s main home, one building only per jointly taxed household. The negative inference is the whole point for our readers: a secondary residence, by definition not the main home, gets no 30 percent reduction. The British-owned holiday flat in Antibes is therefore declared at full open-market value on 1 January, supported by comparable sales, while the same flat, were it the owner’s principal residence, would enter the base at 70 percent. Listed securities, where a sale of shares is needed to compute a fraction, go in at the last known price or the thirty-day average. Usufruct and bare-ownership splits (usufruit and nue-propriété, the French divided-ownership pair where one person enjoys the property and another owns its future) follow the death-duty scale, and furnished letting changes nothing about valuation, though it changes the income-tax story told in the companion guide for British landlords letting a French flat while back in Britain.

Debts are the second lever, and the statute is generous but fussy. Article 974 allows deduction of “les dettes, existantes au 1er janvier de l’année d’imposition, contractées par l’une des personnes mentionnées au 1° de l’article 965 et effectivement supportées par celle-ci, afférentes à des actifs imposables”, debts existing on 1 January, taken on by a household member and genuinely borne by that person, relating to taxable assets, in proportion to their taxable fraction. Five families of expenditure qualify: acquisition costs; repair and maintenance genuinely borne by the owner; improvement, construction, reconstruction and enlargement; property taxes other than those normally on the occupier, excluding taxes on the income the property generates; and acquisition costs of the taxable shares themselves, pro rata. For British owners the workhorse is the acquisition mortgage on the French flat, plus any improvement loan for the new roof or extension. Three traps surround it. Debts must still exist on 1 January, so a loan repaid in December vanishes from the calculation. They must be genuinely borne by the household member claiming them, so a loan taken out by one spouse but serviced by the other invites enquiry. And loans without a capital-repayment term, the interest-only and in-fine (in fine, repayable in one bullet at maturity) loans popular with British buyers, follow a special amortisation: the statute spreads them straight-line over the loan’s life, so each year the deductible amount shrinks by one year’s slice, and the administration polices loans taken out from the taxpayer, from relatives or between controlled companies with anti-avoidance paragraphs that add back debt contracted to acquire an asset from a person the household controls. Keep the mortgage offer, the 1 January statement and the proof of payment together; they are the three documents every IFI file needs.

The scale itself, set by Article 977, is progressive but starts below the threshold, a design that surprises every British reader. The bands run: up to 800,000 euros, nil; 800,001 to 1,300,000, 0.50 percent; 1,300,001 to 2,570,000, 0.70 percent; 2,570,001 to 5,000,000, 1 percent; 5,000,001 to 10,000,000, 1.25 percent; above 10,000,000, 1.50 percent. Because liability only bites above 1,300,000, the lower band functions as the entry slice of every bill. A smoothing reduction (décote, a tapering relief) softens the cliff edge: “Pour les redevables dont le patrimoine imposable a une valeur nette taxable égale ou supérieure à 1 300 000 € et inférieure à 1 400 000 €, le montant de l’impôt calculé selon le tarif prévu au tableau du 1 est réduit d’une somme égale à 17 500 €-1,25 % P, où P est la valeur nette taxable du patrimoine.” Take a concrete British case. A couple owns a Paris flat worth 1,450,000 euros on 1 January with 250,000 euros of acquisition mortgage outstanding, hence a net base of 1,200,000 euros: below threshold, no IFI, no return on that ground. Repay nothing and watch Paris prices lift the flat to 1,650,000 with 200,000 of loan left: net 1,450,000, above threshold, no smoothing, so the bill is 500,000 at 0.50 percent (2,500 euros) plus 150,000 at 0.70 percent (1,050 euros), totalling 3,550 euros. At a net 1,350,000 the same arithmetic gives 500,000 at 0.50 percent (2,500) plus 50,000 at 0.70 percent (350), or 2,850 before the smoothing reduction of 17,500 minus 1.25 percent of 1,350,000 (16,875), leaving 625 euros payable. Readers should verify each figure against their own 1 January statements, because valuation and loan amortisation move every line, but the mechanics never change: full market value for a second home, qualifying debts off, scale on, smoothing near the threshold.

Two reliefs deserve a clear negative answer so British owners stop hoping for them. The business-asset shelter (exonération des biens professionnels) covers property genuinely used in the owner’s trade or company office, not a holiday home lent to the family each August. The capping mechanism (plafonnement, the ceiling that caps IFI plus prior-year income taxes at 75 percent of income) is reserved by Article 979 to taxpayers domiciled in France: “L’impôt sur la fortune immobilière du redevable ayant son domicile fiscal en France est réduit de la différence entre, d’une part”, followed by “le total de cet impôt et des impôts dus en France et à l’étranger au titre des revenus et produits de l’année précédente, calculés avant imputation des seuls crédits d’impôt représentatifs d’une imposition acquittée à l’étranger et des retenues non libératoires et”, set against “75 % du total des revenus mondiaux nets de frais professionnels de l’année précédente, après déduction des seuls déficits catégoriels dont l’imputation est autorisée par l’article 156”, with the income side also counting exempt income and flat-taxed products. A British resident with a French second home cannot claim it. The point was litigated to the top of the administrative courts in the transition to pay-as-you-earn: on 31 March 2021 the Council of State (Conseil d’État, the supreme administrative court), eighth and third chambers sitting together, upheld the administration’s reading that only income tax actually paid counts for the ceiling, after stripping out the transitional modernisation credit, in three decisions including No 440543. The reasoning is technical, but the practical message for our readers fits in one line: the ceiling is a residents’ remedy, and non-residents must get the base right instead, which is exactly what the filing process demands.

II. How do you declare, pay and dispute IFI from the United Kingdom?

A. Filing and paying from abroad, with Paris and Ile-de-France specifics

The filing duty sits in Article 982: “Les redevables mentionnent la valeur brute et la valeur nette taxable des actifs mentionnés à l’article 965 sur la déclaration annuelle prévue à l’article 170”, supported by administration-model annexes in which each asset is itemised and valued. Gross and net taxable values go on the annual income return, with administration-model annexes itemising and valuing each asset. For a British owner with French-source income, typically rent, that means the IFI annexes ride with return No 2042 after ticking the IFI box, using pre-filled form 2042-IFI-K or blank 2042-IFI. For an owner with no French income to declare, the route the tax administration’s international desk describes is the standalone set: form 2042-IFI, or pre-filled 2042-IFI-SK, attached to return 2042-IFI-COV after ticking box 9GN. Spouses file together, the return is signed jointly, and the valuation annexes must show, asset by asset, the gross figure, the deductible debts and the net retained. The administration’s English-language guidance for non-residents confirms the same personal scope for non-residents: liability covers French properties and property rights, plus shares in companies or bodies wherever established, for the fraction of their value representing French property. Practical consequence: a British owner who believes the threshold is missed should still keep the full computation each year, because crossing it in year N+1 triggers a return in year N+2, and the figures that prove the crossing are the 1 January values already discussed.

Deadlines follow the income-tax calendar, with the non-resident twist that paper filing dates differ by zone and online filing is pushed hard. Non-residents file with the non-resident tax office (Service des impôts des particuliers non-résidents, the SIPNR based near Paris, which handles taxpayers domiciled abroad) and pay by the dates on the assessment notice (avis d’imposition, the formal tax bill). From London the robust routine is: create or revive the impots.gouv.fr personal account early, using the French property address and the tax number (numéro fiscal, the thirteen-digit identifier) from any prior French assessment; file online where possible, since paper returns posted from Britain miss statutory dates with depressing regularity; and diary the 1 January photograph separately from the filing deadline, because the two dates answer different questions. Couples should check whose account carries the joint IFI annexes, and anyone who bought mid-year should remember that the first IFI photograph is the next 1 January, while rental income for the part-year goes on the income return immediately. Where a British owner also lets the property, the rental declaration analysed in the companion guide on letting a French flat from Britain runs on its own track and its own forms, but the market value used for IFI and the rent declared for income tax must tell a consistent story about the same flat.

Paris and the Ile-de-France (Ile-de-France, the administrative region around Paris) deserve their own paragraph because that is where British second-home values most often cross the threshold, and where valuation evidence is both abundant and treacherous. A Paris flat is valued at its 1 January open-market value with comparable sales from the same arrondissement (arrondissement, the municipal district) and, for Haussmann stock, the same street segment, adjusted for floor, lift, light and works. Notaire (notaire, the public officer who authenticates French conveyances) price databases, the Paris chamber’s quarterly indices and two or three genuinely comparable recent sales make a file; an estate agent’s breezy letter does not. Three regional specifics matter. First, service charges and renovation provisions (provisions pour travaux, the advance calls that Paris copropriétés, the co-ownership syndicates, levy for facades and lifts) are not deductible debts for IFI, even when they run to tens of thousands, because they are not acquisition, improvement or property-tax debts within Article 974. Second, usufruct arrangements where British parents kept the use of a Paris flat while giving the bare ownership to children must be valued on each head with the death-duty scale at 1 January ages, a calculation the main-home reduction never softens since the parents’ main home is in Britain. Third, the SIPNR’s correspondence is in French and its payment references must be reproduced exactly; a payment that cannot be matched to the right assessment draws penalties while the owner believes the bill is settled. None of this requires living in France. It requires a folder, kept in English if you like but referencing the French labels, with the deed, the 1 January loan statement, the comparables and the prior notice, refreshed every January.

Payment itself is straightforward once the notice exists: transfer to the stated reference, from a French or British account, by the printed date. What trips British owners is everything around it. Exchange-rate movements between 1 January and payment change nothing, because the base is frozen in euros on 1 January. Selling the flat during the year changes nothing for that year’s IFI, for the same reason, though it opens the capital-gains file analysed in the companion guide on selling after leaving France, whose exemption windows and treaty tail work on entirely different statutes. Inheriting or receiving the flat mid-year changes the next photograph, not the current one. And where the flat sits in an SCI, the company must supply the fraction computation so the shareholders can each declare their slice; a British family that never asks its SCI manager for the 1 January fraction letter will file blind. The golden habit is an annual one-page reconciliation in January: gross value per asset, debts per asset, net per asset, household total against 1,300,000, filed or kept with the evidence. Ten minutes with a spreadsheet beats ten months of correspondence.

B. Putting a wrong bill right: penalties, deadlines and the claim that works

Start with the cost of silence, because the statute prices it precisely. Article 1728 of the Code punishes late or missing returns: “Le défaut de production dans les délais prescrits d’une déclaration ou d’un acte comportant l’indication d’éléments à retenir pour l’assiette ou la liquidation de l’impôt entraîne l’application, sur le montant des droits mis à la charge du contribuable ou résultant de la déclaration ou de l’acte déposé tardivement, d’une majoration de : a. 10 % en l’absence de mise en demeure ou en cas de dépôt de la déclaration ou de l’acte dans les trente jours suivant la réception d’une mise en demeure d’avoir à le produire dans ce délai ; b. 40 % lorsque la déclaration ou l’acte n’a pas été déposé dans les trente jours suivant la réception d’une mise en demeure d’avoir à le produire dans ce délai”. Ten percent without a formal demand, or with filing inside thirty days of it; forty percent beyond. Under-declaration of value draws its own penalties and interest on top, and the administration has six years to reassess omitted assets, which for a Paris flat bought quietly through a foreign company is a long shadow. The lesson is not to fear filing but to file carefully: a declared value with documented comparables can be debated, while an undeclared flat cannot.

The five errors British owners actually make map neatly onto the articles above, and each has a fix. First, declaring the London home or worldwide savings: non-residents owe only on French real estate and its share fractions, so delete every British asset from the computation and say so expressly in the annexes. Second, claiming the 30 percent reduction on a holiday home: it belongs only to a main home occupied as such, so remove it and, if the facts genuinely support it, document occupation instead of asserting it. Third, deducting the wrong debts: consumer loans, the British mortgage on the Kent house, provision calls from the syndic (syndic, the managing agent of the co-ownership) and future works are not deductible; only qualifying 1 January debts genuinely borne by the household member, with the in-fine amortisation applied, survive. Fourth, valuing at the wrong date: probate values, purchase prices from 2019 and sale prices from July are all irrelevant next to 1 January market value. Fifth, forgetting jointly held assets and children’s assets under legal administration, or double-counting an SCI flat once as a building and once as shares: reconcile the fraction letter with the direct-asset list. Each correction follows the same discipline: recompute gross, recompute qualifying debts, recompute net, compare to 1,300,000, and keep the paper.

Where the notice has already arrived and it is wrong, the remedy is the contentious claim (réclamation contentieuse, the formal written challenge to the tax office), and its deadline is statutory and strict. Article R*196-1 of the Tax Procedures Book (Livre des procédures fiscales, the procedural code) provides: “Pour être recevables, les réclamations relatives aux impôts autres que les impôts directs locaux et les taxes annexes à ces impôts, doivent être présentées à l’administration au plus tard le 31 décembre de la deuxième année suivant celle, selon le cas : a) De la mise en recouvrement du rôle ou de la notification d’un avis de mise en recouvrement ; b) Du versement de l’impôt contesté lorsque cet impôt n’a pas donné lieu à l’établissement d’un rôle ou à la notification d’un avis de mise en recouvrement”. For IFI, which is assessed by way of a roll and notice, the practical deadline is 31 December of the second year after the notice: a notice received in 2026 is challenged by 31 December 2028. The claim goes to the office that issued the assessment, states the tax, year, amount contested and grounds, attaches the evidence, and, from Britain, is best sent through the online messaging system with proof of dispatch plus registered post. A claim does not suspend collection by itself, so pay first where cash allows and claim restitution, or request a stay expressly; an unpaid disputed bill meanwhile accrues late-payment interest that a victory wipes but a defeat confirms. If the administration rejects expressly or stays silent for six months, the owner has two further months to seize the administrative court (tribunal administratif, the first-instance court for tax disputes), starting with the Montreuil court for non-residents’ direct-tax litigation, with appeal to the administrative court of appeal and, on points of law, to the Council of State. The 2021 ceiling litigation shows that court’s method: it reads the statute literally, compares only taxes actually paid, and refuses to rewrite transitional fairness into the text. Draft the claim the same way, article by article, figure by figure.

Two neighbouring taxes must not be confused with IFI in the claim, because each has its own procedure and its own article, and mixing them loses cases. The housing-tax surcharge on second homes (taxe d’habitation sur les résidences secondaires, with the municipal majoration that some councils voted up to 60 percent) is a local tax on occupation, not a wealth tax, and it is challenged as a local tax; the companion analysis of the 60 percent surcharge on British second homes walks through that separate fight. Rental income and capital gains on sale are income taxes inside the 2008 treaty’s scope, with credit machinery in both directions, unlike IFI. And where the dispute is really about residence itself, the tie-breaker analysis for owners claimed by both countries decides which return is even the right one. A clean IFI claim therefore opens by conceding what is not disputed, British residence, French ownership, 1 January values, and narrows to the precise line in contest: a comparable rejected, a loan disallowed, a fraction miscomputed, a threshold missed by euros. Administrators settle narrow claims far more readily than manifestos, and judges prefer them too.

Conclusion

A British owner living in Britain owes IFI when the household’s net French real-estate rights exceed 1,300,000 euros on 1 January, however many nights are spent in the property and however the purchase was financed in sterling. The charge falls only on French land, buildings and their share equivalents, never on British assets; the holiday home is valued at full market value with no 30 percent reduction; qualifying acquisition and improvement debts existing on 1 January reduce the base within Article 974’s closed list; the progressive scale runs from 800,000 euros with a smoothing band to 1,400,000; and the 2008 treaty, confined to income and gains taxes, gives no credit against this one. From the United Kingdom the discipline is annual and undramatic: photograph every value each January, keep the loan statements and comparables, file the 2042-IFI annexes through the non-resident office, and pay to the printed reference. When the notice is wrong, the path is equally mapped: correct the five classic errors, lodge the contentious claim by 31 December of the second year after the notice, and take a reasoned refusal to the administrative court article by article. Wealth tax on a French second home rewards the organised owner and punishes the hopeful one, and the files that win are built in January, not in December.