Every autumn, foreign owners of French holiday flats and country houses receive the same envelope or the same online notice, and every autumn a large number of them misunderstand it. Since 1 January 2023, the taxe d’habitation (housing tax) on a main home has been abolished for every taxpayer, yet the taxe d’habitation sur les résidences secondaires (second-home housing tax, universally shortened to THRS) remains fully due. The 2026 bills are being issued now: online notices appear in personal accounts on impots.gouv.fr from late September, paper notices follow between 5 and 16 November for taxpayers who are not on monthly direct debit, and between 19 and 26 November for those who are, with payment due before 15 December 2026 and direct-debit collection on 28 December for those who chose payment at the deadline, according to the finance ministry’s official guidance. For a non-resident owner, the bill often carries an unpleasant extra line: the municipal surcharge of 5 to 60 percent voted by a growing number of communes in tight housing zones. This guide explains, for a foreign owner, what exactly is taxed and in whose name, how the surcharge works and who can obtain relief from it, and how to pay on time and challenge an error without losing the strict deadlines. Each proposition below is anchored to the statute and to published rulings of the Conseil d’Etat, all linked to the official text, so that an owner in London, New York, or Dubai can verify every point with her own advisers. Readers who want the wider 2026 tax picture for non-resident owners can also consult our 2026 French property tax guide for non-resident owners before reading on.
Three mechanisms dominate the subject, and each has a French name the owner will meet on the notice and in every exchange with the tax office. The redevable (taxpayer) rule decides in whose name the bill is issued, by reference to the facts existing on 1 January of the tax year. The majoration (surcharge) is the optional 5 to 60 percent increase that a municipal council may vote on its share of the tax in designated tight zones. The reclamation (administrative claim) is the compulsory first step of any challenge, subject to a cut-off date of 31 December of the year following the tax year. The practical thesis of this article is simple. First, check immediately who is named on the bill and how the property’s occupation is recorded, because a wrong classification on 1 January produces a wrong bill for the whole year. Second, identify whether a municipal surcharge applies and whether one of the three statutory cases for relief from that surcharge covers your situation. Third, pay by the deadline even while challenging, and file the claim in the correct form and within the correct period, because French tax procedure forgives almost no missed date. A buyer considering a French purchase who wants to understand how these recurring taxes fit into the acquisition itself can review our Paris real estate law practice guide for foreign buyers alongside this article.
I. What Is Taxed, in Whose Name, and Why the Bill May Carry a Surcharge
A. The taxpayer, the furnished dwelling, and the decisive date of 1 January
French second-home tax starts from a wide definition. “I. – La taxe d’habitation sur les résidences secondaires est due pour tous les locaux meublés conformément à leur destination d’habitation autre qu’à titre principal, y compris lorsqu’ils sont imposables à la cotisation foncière des entreprises.” (Article 1407 of the General Tax Code) In plain terms, the tax is due on all furnished premises used as dwellings other than as a main home, even where the same premises are subject to business rates. The net is therefore cast very wide: a furnished flat kept for holidays, a pied-a-terre used a few weeks a year, and the immediate outbuildings such as a private garage all fall inside. Certain narrow exclusions exist, for example premises for the temporary shelter of persons in difficulty, school and university accommodation, and, under conditions, classified tourist lodgings in designated rural revitalisation zones, but the ordinary foreign-owned second home is squarely within the charge.
The bill must then be issued in the right name, and the statute designates the right person by actual use, not by bare ownership. “I. – La taxe est établie au nom des personnes qui ont, à quelque titre que ce soit, la disposition ou la jouissance des locaux imposables.” (Article 1408 of the General Tax Code) In plain terms, the tax is assessed in the name of the persons who have, on any basis whatsoever, the disposal or the use and enjoyment of the taxable premises. The Conseil d’Etat has drawn the operational consequence for rented property: the administration must assess the tax on each dwelling in the name of the person who has its actual use and enjoyment, and only failing that, in the name of the person who merely has disposal of it. “l’administration doit établir la taxe afférente à chaque habitation au nom de la personne qui en a la jouissance effective et, à défaut seulement, au nom de la personne qui en a la disposition” (Conseil d’Etat, 3rd chamber, 17 April 2026, No. 504693). In plain terms, jouissance effective (actual use and enjoyment) comes first, and mere legal disposal comes second. That hierarchy decided a case directly useful to owners in the Paris region: an owner in Chailly-en-Biere, in Seine-et-Marne, had been assessed on a ground-floor flat whose former tenants had kept the keys after the lease was judicially terminated, and the court held that where the circumstances of the termination and the retained keys prevented the owner, despite any steps he could reasonably have taken, from recovering actual disposal and enjoyment of the flat, he could not be treated as having recovered it, and the assessment had to be reduced accordingly. A foreign owner whose tenant left without returning the keys, or whose flat stands empty between two lets while a dispute continues, should therefore examine the named taxpayer line before anything else. Being the owner on the land registry does not automatically make you the person liable for the housing tax.
Everything is then frozen at a single date. “La taxe foncière sur les propriétés bâties, la taxe foncière sur les propriétés non bâties et la taxe d’habitation sur les résidences secondaires sont établies pour l’année entière d’après les faits existants au 1er janvier de l’année de l’imposition.” (Article 1415 of the General Tax Code) In plain terms, the tax is assessed for the whole year on the basis of the facts existing on 1 January of the tax year. A sale completed in March, a tenant who moved in during February, or furniture removed in April changes nothing for that year’s bill. Only the situation on New Year’s Day counts, which is why the declaration of the property’s occupation status in the owner’s online property account matters so much: an entry left as a second home when the flat had become the owner’s main home, or left as occupied when it stood empty, produces a bill built on the wrong 1 January photograph.
The furnished character of the dwelling is assessed with a severity that surprises many foreign owners, and a 2019 ruling remains the reference. “un immeuble doit être assujetti à la taxe d’habitation, si, d’une part, il contient des meubles affectés à l’habitation au 1er janvier de l’année d’imposition et si, d’autre part, cet ameublement permet un tel usage” (Conseil d’Etat, 3rd chamber, 10 May 2019, No. 411898). In plain terms, a building is subject to the tax where it contains furniture intended for dwelling on 1 January and that furnishing allows such use. The court added that the level of furnishing may be basic, that the premises must be viewed as a whole without ignoring unfurnished rooms that form part of the dwelling and remain at the taxpayer’s disposal, and that ongoing renovation works do not exclude liability where water and electricity connections and some sleeping furniture allow actual habitation. A half-renovated farmhouse with a camp bed and a working bathroom is therefore not safely outside the tax. Conversely, a genuinely empty, unfurnished property is outside the housing tax altogether, though it may fall under the separate annual tax on vacant dwellings, which is a different charge with different rules.
For mixed households, the newest ruling settles a frequent error of the administration. “La résidence principale, au sens de ces dispositions, s’apprécie au regard de la situation de chaque contribuable” (Conseil d’Etat, 9th-10th chambers combined, 7 July 2026, No. 506653). In plain terms, each taxpayer’s main home is assessed individually, even for spouses taxed jointly for income tax purposes. The same decision holds that the address shown on the joint income-tax return is only one piece of evidence among others, and that it cannot be presumed to be the main home for housing-tax purposes unless the taxpayer proves otherwise: “il ne saurait être présumé que cette adresse est, sauf preuve contraire apportée par le contribuable, celle de sa résidence principale pour l’établissement de la taxe d’habitation”. In plain terms, no presumption attaches to the income-tax address; the tax judge decides on the whole file. The taxpayer in that Lyon case lost because the court, weighing her passport, vehicle registration, chequebook, payslips, and insurance endorsements against the joint return address, found as a matter of sovereign fact appraisal that the Lyon flat was not her main home. The lesson for internationally mobile families is twofold: a couple may genuinely have two different main homes for this tax, but the spouse claiming the French flat as her residence principale (main home) must build a consistent documentary record of actual occupation, since the joint return address alone proves nothing.
Two civil-law foundations complete the picture for foreign families. “La propriété est le droit de jouir et disposer des choses de la manière la plus absolue, pourvu qu’on n’en fasse pas un usage prohibé par les lois ou par les règlements.” (Article 544 of the Civil Code) In plain terms, ownership is the right to use and dispose of things as absolutely as possible within the law, which includes keeping a second home for personal enjoyment while paying the taxes the law attaches to it. And where the second home is held jointly by siblings or former spouses, “Nul ne peut être contraint à demeurer dans l’indivision et le partage peut toujours être provoqué, à moins qu’il n’y ait été sursis par jugement ou convention.” (Article 815 of the Civil Code) In plain terms, no one can be forced to remain in joint ownership and partition can always be sought, a reminder that a disputed family second home generating an annual bill nobody wants to pay can be exited through partition rather than endured indefinitely.
B. The 5 to 60 percent surcharge, the extended tight zones, and the three cases for relief
The line that most often shocks foreign owners is the municipal surcharge. “Dans les communes mentionnées au B du I de l’article 1406 bis, le conseil municipal peut, par une délibération prise dans les conditions prévues à l’article 1639 A bis, majorer d’un pourcentage compris entre 5 % et 60 % la part lui revenant de la cotisation de taxe d’habitation sur les résidences secondaires due au titre des logements meublés.” (Article 1407 ter of the General Tax Code) In plain terms, in the listed communes the municipal council may, by formal deliberation, increase by 5 to 60 percent its share of the second-home housing tax due on furnished dwellings. Two consequences follow. First, the surcharge is local and optional: it exists only where the council actually voted it, so two neighbouring communes can bill very different totals for identical flats. Second, second homes receive none of the rebates that once softened the main-home tax, and the surcharge is computed on the valeur locative (rental value) base after the commune’s rate, which is why the increase feels disproportionate on high-value Paris and coastal property.
The geography of the surcharge was massively extended by the 2023 finance law and its implementing decree, and that extension has now survived the highest judicial review. The annual tax on vacant dwellings, which designates the eligible communes, applies in municipalities belonging to a continuous urban area of more than 50,000 inhabitants with a marked housing imbalance, and, since the reform, also in other communes with “un déséquilibre marqué entre l’offre et la demande de logements entraînant des difficultés sérieuses d’accès au logement sur l’ensemble du parc résidentiel existant” (Article 232 of the General Tax Code). In plain terms, a marked imbalance between housing supply and demand causing serious difficulty of access to housing across the existing residential stock, shown notably by high rents, high prices of older dwellings, or a high proportion of non-main homes. The decree of 25 August 2023 then listed the additional communes, and mountain-resort second-home owners challenged it all the way to the Conseil d’Etat, arguing unequal treatment of tourist communes and the inclusion of small villages. The court first refused to send their priority constitutional challenge to the Constitutional Council, holding that the legislature had relied on objective and rational criteria linked to its purpose and had imposed no excessive burden in view of contributive capacity, then rejected the whole application: “La requête de la Fédération des associations de résidents des stations de montagne et autres est rejetée.” (Conseil d’Etat, 8th-3rd chambers combined, 21 December 2023, No. 488601) In plain terms, the mountain owners’ application is dismissed, and the extended map stands. For a foreign owner, the practical effect is that a chalet, a coastal apartment, or a Paris flat can all sit inside the surcharge geography, and the constitutional argument against that geography has already been tried and lost.
The statute itself provides the only reliable exits from the surcharge, in three narrow cases. “Sur réclamation présentée dans le délai prévu à l’article R. * 196-2 du livre des procédures fiscales et dans les formes prévues par ce même livre, bénéficient d’un dégrèvement de la majoration” (Article 1407 ter of the General Tax Code). In plain terms, on a claim filed within the time limit and in the forms of the tax-procedure code, the surcharge is remitted in three situations: first, the dwelling near the place where the taxpayer works, for persons forced by their occupation to live somewhere other than their main home; second, the dwelling that was the main home before the taxpayer moved durably into a care institution covered by the statute; third, any person who, for a cause beyond her will, cannot use the dwelling as a main home. Each case must be proven, each requires the formal claim described in Part II, and the relief covers the surcharge only, never the base tax. A foreign executive posted to Paris who keeps her family home abroad, or an owner whose flat is uninhabitable because of a proven disaster or administrative prohibition, fits the letter of the first and third cases. A flat simply kept empty for convenience, or undergoing ordinary elective renovation, does not.
Paris and the Ile-de-France region deserve a dedicated paragraph, because most foreign-owned second homes in France sit there and the local enforcement environment is specific. Paris belongs to the designated tight zones, the capital’s council has voted the maximum permitted increase, and most inner-suburb communes with strained rental markets have followed with substantial rates, so an owner in the 7th arrondissement or in Boulogne-Billancourt should expect the surcharge line as the norm rather than the exception. The competent administrative court for Paris assessments is the Paris administrative court, while the Seine-et-Marne and outer-suburb files, like the Chailly-en-Biere case above, go to the Melun court, and Paris dockets move slowly enough that a well-documented initial claim usually settles the matter without a judge. Two Paris-specific traps recur every year. The first is the Gerer mes biens immobiliers (Manage my properties) declaration on impots.gouv.fr, in which every owner must state for each property whether it is a main home, a second home, or vacant, and, where occupied by someone else, identify that occupant with name, date, and place of birth; an absent or inaccurate declaration exposes the owner to a fine of 150 euros per premises and, more importantly, locks in the wrong 1 January photograph for the bill. The second is the furnished-tourist angle: from the 2027 tax year, any commune may exempt classified tourist lodgings and guest rooms by deliberation voted before 1 October 2026, with the 2026 exemption confined to designated rural revitalisation zones on declaration form 1205-GD filed before 1 March, so a Paris owner who lets a flat as a furnished tourist accommodation should verify the commune’s vote rather than assume an exemption. None of these local features changes the national rules explained above; they determine how much those rules cost in the capital.
II. Paying on Time and Challenging Errors Without Losing the Deadlines
A. The autumn calendar, the payment, and the correction of the occupation record
The 2026 timetable is fixed and short. Online avis d’imposition (tax notices) are posted to personal accounts on impots.gouv.fr from late September, paper notices are mailed between 5 and 16 November to taxpayers who do not pay by monthly direct debit and between 19 and 26 November to those who do, payment must reach the Treasury before 15 December 2026, and collection for those who chose payment at the deadline occurs on 28 December, as the finance ministry’s official guidance states. A non-resident owner should therefore log into the personal account now rather than wait for the post, verify the address the office holds, and check that any bank details for direct debit remain valid, because a notice sent to an old French address that the owner no longer occupies is still legally notified. Paying the amount shown does not waive the right to challenge it afterwards; on the contrary, paying first and claiming back is the standard protective route, since late-payment penalties of 10 percent accrue automatically while an unpaid challenge runs its course, and only a granted claim refunds them.
Before any formal challenge, the owner should correct the occupation record, because many October surprises come from the file rather than from the law. The online property account allows the owner to amend the declared occupation of each premises, and a correction supported by evidence, such as a lease signed before 1 January showing a tenant in place, a bailiff’s report of vacancy, or utility records proving continuous occupation as a main home, can resolve the simplest errors without litigation. The characteristic foreign-owner mistakes are well known to practitioners: a flat bought during the year and still recorded under the seller’s occupation status; a departure from France recorded for income tax but never mirrored in the property account, so that the former main home is billed as a second home with the surcharge; a tenant who left in December but whose departure was never declared, so the owner is billed where the tenant should have been; and a property entered as furnished where every stick of furniture had been removed before New Year’s Day. Each of these is a question of the 1 January facts, and each is won or lost on documents dated around that date, not on explanations offered in October. Gather the lease, the inventory of furniture, the energy and water consumption statements spanning December and January, the insurance policy describing the occupation, and any correspondence with the managing agent, before writing a single line of the claim.
B. The formal claim, the second chance, and the proof that convinces the judge
Any challenge must begin with a reclamation (administrative claim) to the tax office, and the cut-off is absolute. “Pour être recevables, les réclamations relatives aux impôts directs locaux et aux taxes annexes doivent être présentées à l’administration des impôts au plus tard le 31 décembre de l’année suivant celle, selon le cas” (Article R*196-2 of the Tax Procedure Code). In plain terms, claims on local direct taxes must reach the tax administration no later than 31 December of the year following the triggering event, which for a billed tax is the collection of the assessment roll. For the 2026 bill, that means 31 December 2027, and for the 2025 bill still open today, 31 December 2026, only weeks away. The claim is filed online through the secure messaging of the personal account or by letter to the tax centre shown on the notice, must identify the tax, the year, and the premises, must state the grounds in law and fact, and should attach the documentary bundle in copy, keeping the originals. An owner who discovers in this October’s mail that the 2025 bill was also wrong should therefore treat this autumn as the last call for 2025 as well as the first call for 2026.
Two procedural safeguards from the April 2026 ruling deserve emphasis, because they save claims that owners and even some advisers consider dead. First, an earlier rejected claim does not bar a fresh one: “aucune irrecevabilité tirée de ce qu’une réclamation antérieure dirigée contre la même imposition aurait déjà été rejetée par l’administration ne peut être opposée à une nouvelle réclamation formée dans ce délai” (Conseil d’Etat, 3rd chamber, 17 April 2026, No. 504693). In plain terms, no inadmissibility based on a previous claim against the same assessment being already rejected can be raised against a new claim filed within the time limit. An owner whose quick informal email was answered with a refusal in January can still file a complete, documented claim in November, and the office must examine it on the merits. Second, administrative silence is not a defeat. Where the office keeps silent on the claim for six months, the owner may take the dispute to the administrative court, and the two-month court time limit cannot run against the owner until a reasoned express rejection, stating the available appeals and their time limits, has been duly notified. In practice, this means sending the claim early, diarising the six-month date, and filing the court application promptly after it expires if no answer arrives, rather than waiting indefinitely for a response that may never come.
The substance of the winning file follows directly from the rulings in Part I, and the July 2026 decision supplies the method. Because no presumption attaches to the income-tax address, the judge weighs the whole file, and the owner must therefore out-document the administration: dated proof of actual presence in the French flat across the year, such as travel records, medical and school certificates, local subscriptions, and consistent consumption data, where main-home status is claimed; the terminated lease, the court order recording termination, and evidence of the steps taken to recover the keys and re-let, where the owner alleges loss of actual enjoyment, following the Chailly-en-Biere pattern; photographs and inventories proving the absence of habitable furnishing on 1 January, where vacancy is alleged, while remembering the court’s warning that basic furnishing suffices and that renovation alone does not exclude liability; and, for the surcharge specifically, the employment contract and posting letter, the care-institution admission papers, or the expert report proving uninhabitability, matching one of the three statutory relief cases to the letter. Conversely, the files that fail are predictable: bare assertions without dates, documents from March offered to prove January, a claim that the flat is a main home while the joint return, the children’s schooling, and the medical records all point abroad, or a constitutional attack on the surcharge map that the December 2023 ruling has already closed. The administrative judge decides on evidence, not on equity, and the Conseil d’Etat’s recent case law rewards the owner who arrives with a dated, coherent, and complete bundle.
Conclusion
The October 2026 second-home tax bill holds no mystery once its three layers are separated. The base tax follows the furnished dwelling and the person with actual enjoyment on 1 January, with each spouse’s main home assessed individually and with basic furnishing enough to trigger liability even mid-renovation. The municipal surcharge of 5 to 60 percent applies only where the council voted it inside the extended tight zones, a geography the Conseil d’Etat upheld in December 2023, and its only reliable exits are the three statutory relief cases claimed in the proper form and time. The challenge follows a strict but forgiving procedure: a reasoned claim by 31 December of the following year, a second claim still receivable after an earlier refusal, and access to the court after six months of administrative silence. For the foreign owner, the autumn routine is therefore a short checklist: open the online account now, verify the named taxpayer and the recorded occupation, identify any surcharge line and test the three relief cases, pay by 15 December, and file the documented claim within the year-end limits for every year still open. Performed once a year with the January-dated documents kept in a single file, that routine converts an alarming envelope into a manageable compliance step, and it preserves every remedy the recent case law has confirmed.