I. How is French furnished rental income taxed for a British owner after Brexit?

A. Does France tax the rent, and when does a furnished letting become BIC?

The property is the starting point. Article 6 of the 2008 UK–France double-taxation convention in force states that income from immovable property situated in a contracting state may be taxed in that state, and expressly applies the rule to income from letting. The convention was published in France by Decree no. 2010-20 and the treaty of 19 June 2008. A French property therefore remains within France’s taxing jurisdiction even when the owner is British, the rent is paid into a UK account and the letting agent is based in London.

For a British owner who is not French tax resident, Article 164 B of the French Tax Code identifies French-source income. Its first category includes the words « Les revenus d’immeubles sis en France ou de droits relatifs à ces immeubles ». In English, income from buildings situated in France, or rights relating to those buildings, is French-source income. A non-resident cannot turn a French letting into foreign income merely by receiving the rent abroad.

Residence changes the wider reporting picture. Article 4 B of the French Tax Code treats as fiscally domiciled in France people who have their home or principal place of stay there, who carry on their main professional activity there or whose economic interests are centred there, subject to an applicable treaty residence result. The statutory wording begins « Les personnes qui ont en France leur foyer ou le lieu de leur séjour principal ». A British owner who has recently moved to France should establish the residence date and keep evidence of the household, days spent in each country, work, family and financial centre. The certificate and correspondence process is separate from the tax classification of the rent; our article on obtaining a French residence certificate for HMRC can be used for that issue.

French domestic law then asks whether the accommodation is furnished. Article 35, I, 5 bis of the French Tax Code classifies as BIC the people who give furnished residential premises for direct or indirect letting. The operative words are « Personnes qui donnent en location directe ou indirecte des locaux d’habitation meublés ». BIC is a French tax category, not a statement that the owner has incorporated a business in France. A private landlord can be a loueur en meublé non professionnel (LMNP), meaning non-professional furnished landlord, while still having to register the activity and file the relevant professional-income forms.

Furniture must support normal occupation, and the length and service level of the letting matter. A furnished tenancy used as a tenant’s main home is not analysed in the same way as a succession of nightly bookings. A platform’s label, the English expression “holiday let” or the fact that the owner lives in Britain does not settle the French category. Prepare the inventory, tenancy terms, advertising, booking calendar, cleaning and service invoices, and the actual use of the premises. Those documents can decide whether the activity is long-term furnished letting, a furnished tourist letting or something that needs a different analysis.

Short-term tourist use brings a second layer of law beyond tax. In its decision no. 19-13.191 of 18 February 2021, the Third Civil Division of the Cour de cassation examined repeated short rentals of a Paris dwelling. The verified passage states that repeated letting for less than a year to passing occupants who do not make the premises their main home « constitue un changement d’usage d’un local destiné à l’habitation et, par conséquent, est soumis à autorisation préalable ». That is an authorisation rule, not a tax exemption. A British owner must check the municipality before relying on a tourist-letting business model.

The registration rule is also enforceable. In decision no. 23-13.567 of 27 June 2024, the Cour de cassation confirmed that, subject to the residence-principale exception, a person offering a tourist furnished property must have made the prior declaration to the mayor. The verified wording is « toute personne qui offre à la location un meublé de tourisme, que celui-ci soit classé ou non au sens du code susvisé, doit en avoir préalablement fait la déclaration auprès du maire de la commune où est situé le meublé ». In practice, keep the declaration number, municipal authorisation, registration receipt and correspondence with the mairie, which is the town hall.

The treaty does not erase these domestic obligations. It allocates taxing rights between France and the UK; it does not decide whether a flat may be used for repeated tourist stays, whether a declaration was required or whether the rent is BIC. If the UK also taxes the income because you remain UK resident, Article 24 of the convention supplies the double-tax mechanism. The country of residence and the country where the property is located may both appear in the calculation, but the same amount must not be treated as if it were two unrelated businesses.

B. Should you choose micro-BIC or the régime réel, and what other charges follow?

The principal choice is between the flat-rate micro-BIC regime and the actual regime. The current text of Article 50-0 of the French Tax Code, in force from 1 July 2026, sets the micro thresholds and allowances. For the general category covering ordinary furnished letting, the text gives a limit of €83,600 and a 50% allowance; it gives a separate €15,000 limit and 30% allowance for non-classified tourist furnished accommodation. The statute says, for the general category, « 83 600 € s’il s’agit d’autres entreprises » and provides that the result is the turnover reduced by the relevant allowance.

Year matching is essential. The French administration’s page on furnished lettings and its page on tax regimes still show the figures applicable to 2025 income, including €77,700 for ordinary furnished letting and €15,000 for non-classified tourist furnished accommodation. Those figures are used for a 2025-income return filed during the 2026 campaign. The current statute applies its own threshold to the relevant income year. Write the year at the top of the calculation, then check the statutory text and the administration’s form for that year rather than carrying last year’s threshold forward.

Under micro-BIC, you normally report the gross receipts, including charges paid by the tenant, and the administration applies the fixed allowance. You do not deduct the agent’s commission, furniture replacement, mortgage interest or repairs a second time. The official answer on including charges confirms that the amount declared includes rent and relevant tenant charges. Your ledger must therefore distinguish the gross amount received from the net amount that reached your bank account.

The régime réel can be preferable where actual costs are high, particularly when there is significant interest, qualifying repair work, insurance, management cost or accounting depreciation. It requires a result declaration, generally Form 2031, and an accounting file. The official guidance explains that actual charges must be incurred in the activity’s interest, supported by sufficient evidence and recorded in the correct accounting period. Depreciation can be deducted only within the statutory limits; it cannot be used as a shortcut to manufacture an unrestricted deficit. The comparison should be made on a year-specific French calculation, not by translating a UK property schedule line by line.

The administration also states that a property held in indivision cannot use the micro regime and must be declared under the real regime. Indivision means that two or more people own the property directly in undivided shares. That point matters for British couples, siblings and estates: the ownership document, the beneficial shares and the rent-allocation agreement should be reconciled before a return is filed. A platform statement naming one person as host does not prove that person is the sole French taxpayer.

LMNP and professional furnished landlord status are distinct from the micro-versus-real choice. The current administrative explanation uses two cumulative tests for professional status: annual receipts above €23,000 and receipts exceeding the household’s other income in the relevant categories. The test is made at household level and applies to the furnished lettings together. A British owner should not describe the activity as “professional” simply because it has a SIRET number, and should not describe it as “private” merely because there is one flat.

Case law shows why gross receipts, net BIC and professional status must not be collapsed. In Cour de cassation, Commercial, Financial and Economic Division, decision no. 22-17.612 of 20 December 2023, the court considered the professional furnished-letting test in an ISF context. After checking the complete decision through Judilibre, the relevant passage refers to « le bénéfice industriel et commercial net annuel dégagé par cette activité ». The decision concerns the former wealth-tax provision and should not be copied mechanically into today’s income-tax computation. It is, however, a useful warning that the legal question may require net BIC rather than an agent’s gross-receipts total.

Social charges are a separate calculation. Article L. 136-6 of the Social Security Code covers income from property and BIC within the contribution on income from assets. Its opening rule says « Les personnes physiques fiscalement domiciliées en France au sens de l’article 4 B du code général des impôts sont assujetties à une contribution sur les revenus du patrimoine ». The current impots.gouv.fr guidance states 18.6% for furnished letting on the net amount, while also explaining that a person affiliated to the health-insurance system of the European Economic Area, the United Kingdom or Switzerland and not covered by a compulsory French system is not liable for CSG and CRDS on property income, although the solidarity levy may remain due.

That exemption is evidence-driven. A British passport, a private health policy, an S1, National Insurance contributions or a French residence card does not by itself identify the applicable social-security legislation for the rental period. Obtain the official affiliation evidence, identify whether a French compulsory scheme covered you, separate CSG and CRDS from the solidarity levy, and check the box used for the particular income year. If the administration has charged the full amount, the claim should identify the exact period and the legal basis for the requested correction.

Finally, check the cotisation foncière des entreprises (CFE), a local business tax. The furnished-letting guidance states that an owner generally must file the initial Form 1447-C-SD by 31 December of the first year of the activity, with exceptions for certain occasional or personal-home situations. Article 1647 D of the French Tax Code also deals with the minimum CFE base. For an overseas taxpayer carrying on a property rental activity in France, it places the minimum at the location of the French property with the highest rental value. The text refers to « Les redevables situés à l’étranger qui réalisent une activité de location ou de vente portant sur un ou plusieurs immeubles situés en France ».

The current statute provides an exemption from the minimum contribution where turnover or receipts do not exceed €5,000, but local rules, the nature of the activity and other exemptions must still be checked. CFE is not the same as income tax, taxe foncière or taxe d’habitation. Keep the CFE notice, the 1447-C filing, the property address and the municipal calculation in a separate file. A furnished-rental tax return can be correct while the CFE declaration is missing.

II. Which forms, deadlines and remedies should a British furnished landlord use?

A. How do you file in France and report the same property in the UK?

Build the filing calendar around the property’s French income year and your UK residence status. France normally works on a calendar year. The UK tax year runs from 6 April to the following 5 April. A British owner who lives in the UK may have to report French rent as foreign property income on the UK return. A British owner who is resident in France may still need to deal with HMRC if the residence rules, a prior UK period or another UK connection keeps a UK filing obligation alive. The GOV.UK guide to foreign income says that UK residents normally pay UK tax on foreign income and that overseas property rent is taxed through the normal rules.

On the French side, start with the activity registration and the right income form. A furnished activity normally requires a declaration through the formalities portal so that a SIRET number can be issued and the chosen tax regime recorded. The first-year CFE declaration is separate. The annual income return will normally involve Form 2042-C-PRO for LMNP income, with Form 2031 and its schedules if the real regime applies. The exact boxes change with the year and with the professional or non-professional classification. Do not use the boxes for French unfurnished property simply because the English tenancy agreement calls the house a “let”.

Where the income is foreign for the person filing in France, Form 2047 may also be relevant, but a French property rented by its owner is not foreign-source income merely because the owner is British. A UK-resident owner may need Form 2047 to declare foreign income in the French return only if France treats that person as resident or another French reporting rule applies. The source rule, residence rule and form instruction must be read together. The form cannot change Article 164 B or Article 4 B.

On the UK side, the official Self Assessment Foreign (SA106) page says that the supplementary pages record foreign income and gains and can be used to claim foreign tax credit relief. If you remain UK resident and France has taxed the French rent, preserve the French assessment and proof of payment for the UK claim. If the French result is reduced by the micro-BIC allowance, the UK foreign-income computation may still use different UK rules. A French tax credit is generally limited by the UK domestic rules and the treaty method; it is not automatically the full amount shown on a French notice.

Article 24 of the UK–France convention deals with elimination of double taxation. For a UK resident who is taxed in France on French property income, the UK-side mechanism generally requires a foreign-tax-credit analysis. For a French resident, the treaty may leave income taxable in France because the property is there, while another item of UK income can follow a different rule. The convention is not a general “Brexit exemption”. It is a map of which state may tax and how the second charge is relieved.

Keep currency conversion transparent. A UK agent may report sterling receipts, commission and expenses by UK tax year, while the French return needs euros and a calendar-year total. Record the date and amount in pounds, the conversion rate used, the euro result and the source of the rate. Keep the bank statement and agent statement together. If the rent was paid into a joint account, identify the beneficial owner and the agreed share rather than dividing it casually by two.

A useful reconciliation table should contain, for each property:

• the legal owner and percentage share;
• the furnished or tourist-letting classification and the dates of each tenancy;
• gross rent and tenant charges, with GBP and euro figures;
• French micro-BIC allowance or actual charges, depreciation and any carried-forward amount;
• French income tax, social charges and CFE, each on its own line;
• UK property income, UK deductions and any tax withheld; and
• the treaty article, foreign-tax credit or other relief claimed in each country.

Do not make a UK annual statement look like a French declaration. A UK mortgage-interest restriction, a French depreciation limitation, an exchange-rate difference or a year-end receipt can legitimately produce different taxable profits. The evidence should explain the bridge rather than conceal the difference. If a platform pays a net amount, obtain the gross-receipts and commission breakdown. If the property was empty, record the reason and the dates. If a family member used it, document whether the use was free, discounted or charged at market rent.

Keep the registration, inventory, booking records, tenancy, bank statements, invoices, mortgage documents, insurance, UK return, French return, tax notices, treaty calculation, CFE papers and social-security evidence for the period required by the relevant administration. The file should be readable by someone who did not prepare it. That is particularly important where the owner changes from UK to French residence between two rental years.

B. How can you challenge a wrong BIC classification, social-charge bill or French assessment?

Start by identifying the exact error. A French notice can be wrong because the administration used gross receipts instead of the French net result, applied the wrong micro threshold, treated a long-term letting as a non-classified tourist letting, ignored an indivision, rejected an actual expense, assessed the wrong ownership share, duplicated a treaty amount, imposed CSG and CRDS despite qualifying UK affiliation, or treated a CFE issue as income tax. Each error requires a different calculation. A general statement that “the property is British-owned” is not a substitute for the relevant evidence.

If the letting was short-term, check municipal compliance before challenging the tax. The Cour de cassation’s decision no. 19-13.191 makes clear that repeated short rentals can amount to a change of use requiring prior authorisation. Decision no. 23-13.567 confirms the prior declaration rule for a tourist furnished property. A tax correction and a municipal enforcement action can exist side by side. Proving that the tax return used the correct BIC box does not prove that the municipal registration was completed.

If the administration sends a proposition de rectification, meaning a formal tax-adjustment proposal, check the reasoning and the response deadline. Article L. 57 of the Book of Tax Procedures states that the proposal must be reasoned so that the taxpayer can make observations or accept it. The verified text begins « L’administration adresse au contribuable une proposition de rectification qui doit être motivée de manière à lui permettre de formuler ses observations ou de faire connaître son acceptation ». A response should address each reason, attach the replacement calculation and explain the legal source of every figure. Silence can leave the administration’s reasoning unchallenged.

If the problem is an issued income-tax assessment, make a formal réclamation contentieuse, meaning a tax claim asking the administration to correct or discharge the assessment. Put the notice at the front; identify the tax, year, property and amount; state whether the claim concerns BIC, social charges, treaty relief, CFE or another tax; and attach the documents proving the requested correction. Send it through the secure messaging service or to the competent office and keep the acknowledgement. An informal message to a call centre may not preserve the same evidential position.

Article R*196-1 of the Book of Tax Procedures, in force from 30 July 2026, gives the general time rule for claims concerning taxes other than direct local taxes and their ancillary taxes. It says « 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 », subject to the event and payment rules set out in the rest of the article. This article must not be applied blindly to CFE or another local tax; check the specific notice and limitation rule. The date on the assessment and the date of payment should be recorded immediately.

A treaty argument should identify both sides of the analysis. First, name the domestic French rule that creates the assessment: Article 35 for furnished BIC, Article 50-0 for micro-BIC, Article L. 136-6 for social contributions or Article 1647 D for the CFE minimum. Second, name the treaty article that allocates income or gives relief. Article 6 of the UK–France convention addresses property income; Article 24 addresses double taxation. A treaty does not by itself erase a domestic tax, and a domestic form does not by itself override the treaty. The claim should show the calculation after both rules have been applied.

For a social-charge claim, separate the components. The current French guidance distinguishes the 18.6% furnished-letting rate from the CSG and CRDS exemption available where the owner is affiliated to the UK, EEA or Swiss health system and is not covered by a compulsory French scheme. Attach the affiliation certificate, the dates of coverage, the French assessment and a calculation that leaves any solidarity levy in place if required. A private policy or an S1 without a clear statutory affiliation trail may lead to a request for further evidence.

For a micro-BIC or réel dispute, attach the gross-receipts ledger, the inventory, the lease or bookings, the registration, the 2031 accounts if applicable, the invoices and the depreciation schedule. If the issue is a threshold, show all furnished lettings in the household and state the income year. If the issue is a joint property, attach the title and ownership percentages. If the issue is tourist use, attach the municipal declaration and authorisation. If the issue is a UK credit, attach the UK return, HMRC computation, proof of tax and the treaty worksheet.

Escalate promptly if the claim is rejected or collection continues. The administrative-court route, a request for a stay of payment or an application concerning a municipal authorisation has its own conditions and deadlines. Keep the original notice, the claim, the acknowledgement, the administration’s decision, all evidence and a short chronology. The fact that the owner is abroad can create service and language difficulties, so nominate a reliable correspondence address and monitor the secure mailbox rather than relying on a paper letter being forwarded from France.

The practical checklist before filing or challenging is short:

• classify the letting as ordinary furnished, tourist furnished or another activity;
• confirm French or UK residence for the relevant period;
• select the correct year-specific micro-BIC or réel regime;
• separate income tax, social charges, CFE and municipal compliance;
• reconcile gross receipts, actual deductions, depreciation and ownership shares;
• apply Article 6 and Article 24 of the treaty to the correct income; and
• calendar the French and UK filing or claim deadlines before sending the forms.

Conclusion

For a British owner, furnished rent from a French property is a French legal and tax issue before it is a Brexit issue. France taxes income connected with property situated in France, classifies furnished residential letting as BIC and requires the owner to choose the correct regime for the relevant year. The UK may also require a return if the owner remains UK resident. The treaty coordinates those claims; it does not replace French registration, municipal compliance, CFE, social-charge or evidence rules.

The safest sequence is to identify the owner and residence dates, prove how the property is used, register the activity, choose micro-BIC or the real regime from the current year’s figures, reconcile gross and net amounts, file in each country that has a taxing or reporting right and calculate treaty relief separately. If a notice is wrong, challenge the classification or calculation with the domestic article and treaty article together, respect the special deadline for the tax concerned and retain proof of every submission.

Need a quick opinion on your case

We can arrange a telephone consultation within 48 hours with a lawyer from the firm.

Bring the letting agreement or booking statements, French tax notice, UK computation, ownership evidence and social-security documents so the immediate issue can be identified.

Call +33 6 46 60 58 22 or use the contact form for Maître Reda Kohen’s firm.