{"id":2119538,"date":"2026-09-11T16:09:21","date_gmt":"2026-09-11T14:09:21","guid":{"rendered":"https:\/\/kohenavocats.fr\/2026\/09\/11\/british-resident-france-selling-uk-shares-cgt-form-2074-treaty-challenge-brexit\/"},"modified":"2026-09-11T16:09:21","modified_gmt":"2026-09-11T14:09:21","slug":"british-resident-france-selling-uk-shares-cgt-form-2074-treaty-challenge-brexit","status":"publish","type":"post","link":"https:\/\/kohenavocats.fr\/en\/2026\/09\/11\/british-resident-france-selling-uk-shares-cgt-form-2074-treaty-challenge-brexit\/","title":{"rendered":"British Resident in France Selling UK Shares After Brexit: How the Plus-Value Is Taxed, How to File Form 2074 and How to Challenge Double Tax"},"content":{"rendered":"<p>Selling a block of UK shares after you have moved to France is not a \u201cUK tax event that France ignores\u201d. Once you have your <em>domicile fiscal<\/em> (tax home) in France, <a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000006302200\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000006302200\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">article 4 A of the <em>code g\u00e9n\u00e9ral des imp\u00f4ts<\/em><\/a> (CGI, the French tax code) taxes you on worldwide income. Listed shares, funds, investment-trust units and most unlisted holdings are <em>valeurs mobili\u00e8res<\/em> (transferable securities). The gain on a sale for value is a <em>plus-value mobili\u00e8re<\/em> (chargeable gain on securities). It is not the same tax as UK Capital Gains Tax, it is not the same as the French tax on UK dividends, and it is not the same as the tax on selling a UK house.<\/p>\n<p>This note is for the British resident who has already moved, or is about to move, and who is staring at a contract note from a UK broker, a Form 1042-style statement, an HMRC calculation, or a French <em>avis d\u2019imp\u00f4t<\/em> (tax assessment) that has just added a line nobody explained. Three questions matter. First: does France tax the sale at all, and on what facts? Second: how is the euro gain built, and is the 31.4 per cent <em>pr\u00e9l\u00e8vement forfaitaire unique<\/em> (PFU, the flat-rate levy often called the \u201cflat tax\u201d) automatic? Third: if the United Kingdom also claims tax \u2014 in particular under the six-year clawback in the 2008 treaty \u2014 how do you declare the sale on form 2074, claim any credit, and challenge a reassessment? The article does not cover buying French property, creating a company, or the PEA (plan d\u2019\u00e9pargne en actions, a French share wrapper). Those files belong elsewhere.<\/p>\n<p>Brexit did not repeal the France\u2013United Kingdom tax treaty signed in London on 19 June 2008, published by decree no. 2010-20 of 7 January 2010, and still applied as such by the Cour administrative d\u2019appel de Paris in <a href=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000051453923\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000051453923\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">no. 23PA02576 of 11 April 2025<\/a>. Capital gains sit in article 14 of that convention, not in article 13 (which deals with royalties). The ordinary rule for listed UK shares is residence-state taxation. The dangerous paragraph is article 14(6), which keeps a UK taxing right over a person who was a UK resident at any time in the six previous tax years. That is the clause that turns a \u201csimple\u201d French PFU bill into a double-tax file. The rest of this note follows that sequence: French charge first, treaty second, declaration and challenge last.<\/p>\n<h2>I. Do I pay French tax when I sell my UK shares after moving to France?<\/h2>\n<h3>A. When does France tax a British seller, and which UK holdings fall under article 150-0 A?<\/h3>\n<p>French income tax starts with residence, not with nationality and not with the flag on the share certificate. Article 4 A is short and blunt: \u201cLes personnes qui ont en France leur domicile fiscal sont passibles de l&#8217;imp\u00f4t sur le revenu en raison de l&#8217;ensemble de leurs revenus. Celles dont le domicile fiscal est situ\u00e9 hors de France sont passibles de cet imp\u00f4t en raison de leurs seuls revenus de source fran\u00e7aise.\u201d In English: people with their tax home in France are liable to income tax on all their income; people whose tax home is outside France are liable only on French-source income. A British passport does not create a French exemption. A UK broker does not keep the gain \u201coffshore\u201d. If you are a French tax resident, a sale of Barclays, Shell, an FTSE tracker or a private UK company is inside the French net unless a specific exclusion applies.<\/p>\n<p><a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000051202565\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000051202565\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">Article 4 B of the CGI<\/a> says who has that tax home: \u201c1. Sont consid\u00e9r\u00e9es comme ayant leur domicile fiscal en France au sens de l&#8217;article 4 A : a. Les personnes qui ont en France leur foyer ou le lieu de leur s\u00e9jour principal ; b. Celles qui exercent en France une activit\u00e9 professionnelle, salari\u00e9e ou non, \u00e0 moins qu&#8217;elles ne justifient que cette activit\u00e9 y est exerc\u00e9e \u00e0 titre accessoire ;\u201d. The third head, quoted by the Conseil d\u2019\u00c9tat in <a href=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000042133685\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000042133685\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">decision no. 436570 of 16 July 2020<\/a>, is \u201cc. Celles qui ont en France le centre de leurs int\u00e9r\u00eats \u00e9conomiques.\u201d One head is enough. A couple who kept a London flat, a UK bank and a UK doctor, but whose family home, school run and weekday life are in Paris, will usually have their <em>foyer<\/em> (household) in France. A person who works in France, unless the work is accessory, is resident under 4 B 1 b. A person whose fortune, share portfolio and business decisions sit in France can be resident under 4 B 1 c even if the passport is British and the broker is in Edinburgh. Dual residence is then sorted by article 4 of the 2008 treaty (permanent home, centre of vital interests, habitual abode, nationality). That tie-breaker is a separate proof file; it is mapped in the firm\u2019s note on <a href=\"https:\/\/kohenavocats.fr\/en\/2026\/09\/03\/british-couples-france-uk-tax-residence-proof-brexit\/\">proving tax residence when a couple is split between France and the UK<\/a>.<\/p>\n<p>Once residence is French, the charging provision for securities is <a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000053543761\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000053543761\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">article 150-0 A of the CGI<\/a>, in force in the version dated 21 February 2026. Its opening sentence reads: \u201cSous r\u00e9serve des dispositions propres aux b\u00e9n\u00e9fices industriels et commerciaux, aux b\u00e9n\u00e9fices non commerciaux et aux b\u00e9n\u00e9fices agricoles ainsi que des articles 150 UB et 150 UC , les gains nets retir\u00e9s des cessions \u00e0 titre on\u00e9reux, effectu\u00e9es directement, par personne interpos\u00e9e ou par l&#8217;interm\u00e9diaire d&#8217;une fiducie, de valeurs mobili\u00e8res, de droits sociaux, de titres mentionn\u00e9s au 1\u00b0 de l&#8217;article 118 et aux 6\u00b0 et 7\u00b0 de l&#8217;article 120 , de droits portant sur ces valeurs, droits ou titres ou de titres repr\u00e9sentatifs des m\u00eames valeurs, droits ou titres, sont soumis \u00e0 l&#8217;imp\u00f4t sur le revenu.\u201d In plain terms: net gains on sales for value of transferable securities, company rights and similar titles \u2014 made directly, through an interposed person or through a fiducie \u2014 are subject to income tax, subject to the rules for trading, professional and farming profits and to articles 150 UB and 150 UC (which deal with other asset classes). The Conseil d\u2019\u00c9tat quoted the same charging sentence in <a href=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000044041319\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000044041319\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">decision no. 443914 of 13 September 2021<\/a>, published in the Recueil Lebon, in a case about a sale of US shares declared on form 2074. The court did not ask whether the company was French. It applied article 150-0 A to foreign titles held in a private portfolio.<\/p>\n<p>That is the point British clients miss. \u201cUK shares\u201d are still <em>valeurs mobili\u00e8res<\/em>. So are most unit trusts, OEICs, investment-trust shares, ETFs and the ordinary shares of a UK limited company that is not a property vehicle. What article 150-0 A does not cover, or covers only with other texts, includes: a sale of French or UK land as such (plus-value immobili\u00e8re); a trading profit if you are in fact a professional dealer; certain carried-interest and management packages; and the separate dividend line, which is income, not a disposal gain. UK dividends received as a French resident are a different treaty article and a different form; they are dealt with in the note on <a href=\"https:\/\/kohenavocats.fr\/en\/2026\/09\/10\/british-resident-france-uk-dividends-tax-treaty-credit-challenge-brexit\/\">UK dividends, the treaty credit and how to challenge double tax<\/a>. A sale of a UK house is again different: that is immovable property, taxed under article 14(1) of the treaty in the situs State, and it is mapped in the note on <a href=\"https:\/\/kohenavocats.fr\/en\/2026\/09\/11\/british-resident-france-selling-uk-house-cgt-treaty-credit-challenge-brexit\/\">selling a UK house from France<\/a>.<\/p>\n<p>Two wrappers deserve a warning, not a slogan. A UK ISA is tax-free in the United Kingdom. France does not reproduce that wrapper. Once you are a French tax resident, a disposal inside an ISA is still, for French purposes, a disposal of securities unless a specific French exemption is shown. The ISA article already on this site explains the declaration; it does not cancel article 150-0 A. A French PEA, by contrast, is a French statutory wrapper with its own exits; putting UK shares into a PEA, or winding one up after a move, is a different operational file and is not the subject of this note. Employee share schemes (unapproved options, EMI, RSUs, BSPCE on the French side) can fall partly under salaries and partly under 150-0 A. If the gain is a reward for work in France, do not assume the PFU will save you. The tax office reads the plan rules and the employment contract before it reads the broker note.<\/p>\n<p>The Conseil d\u2019\u00c9tat has also confirmed that article 4 A worldwide taxation reaches securities gains of a French resident even where a treaty is in play. In <a href=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000042133685\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000042133685\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">no. 436570 of 16 July 2020<\/a> the court recorded that the taxpayer, \u201cdomicili\u00e9 fiscalement en France au titre de l&#8217;ann\u00e9e 2013 en vertu de l&#8217;article 4 B\u201d, had been assessed to income tax and social contributions \u201c\u00e0 raison de profits sur instruments financiers \u00e0 terme, de dividendes et de gains de cession de valeurs mobili\u00e8res\u201d. The dispute then moved to the treaty tie-breaker. The method is always the same, and the Conseil d\u2019\u00c9tat restated it on 9 October 2024 in <a href=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000050329120\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000050329120\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">decision no. 472947<\/a>: the judge looks first at French law to see whether the charge is valid, and only then at whether the convention stands in the way. Brexit did not invert that order.<\/p>\n<h3>B. How is the plus-value calculated, and is the 31.4 per cent PFU automatic?<\/h3>\n<p>The gain is not \u201cwhat the broker shows in sterling\u201d. It is a euro figure built by <a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000053543011\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000053543011\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">article 150-0 D of the CGI<\/a>. The first paragraph, in the version in force since 21 February 2026, begins: \u201c1. Les gains nets mentionn\u00e9s au I de l&#8217;article 150-0 A sont constitu\u00e9s par la diff\u00e9rence entre le prix effectif de cession des titres ou droits, net des frais et taxes acquitt\u00e9s par le c\u00e9dant, et leur prix effectif d&#8217;acquisition par celui-ci diminu\u00e9, le cas \u00e9ch\u00e9ant, des r\u00e9ductions d&#8217;imp\u00f4t effectivement obtenues dans les conditions pr\u00e9vues \u00e0 l&#8217;article 199 terdecies-0 A, ou, en cas d&#8217;acquisition \u00e0 titre gratuit, leur valeur retenue pour la d\u00e9termination des droits de mutation.\u201d Sale price actually received, net of costs and taxes borne by the seller, minus acquisition price actually borne by that seller \u2014 or, if the shares were inherited or gifted, the value used for transfer duty. Nothing in that sentence says \u201cuse the UK CGT computation\u201d. HMRC\u2019s base cost, indexation (long abolished for individuals), bed-and-breakfast rules and annual exempt amount are UK domestic tools. They do not rewrite article 150-0 D.<\/p>\n<p>Currency is where British files break. The Conseil d\u2019\u00c9tat settled the method in <a href=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000044041319\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000044041319\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">no. 443914 of 13 September 2021<\/a>. The taxpayers had sold 6,880 shares in an American company for 366,972 US dollars, acquired two years earlier for 284,643 dollars. They declared a euro gain of 55,040 euros on the 2074 annex. The tax office recomputed each dollar amount at the exchange rate of its own date and arrived at 135,563 euros. The court held that the court of appeal had not erred in law: \u201cle gain net tir\u00e9 de l&#8217;op\u00e9ration en litige devait \u00eatre \u00e9tabli globalement \u00e0 hauteur de la diff\u00e9rence entre le prix de cession des titres [\u2026] converti en euros sur la base du taux de change du dollar am\u00e9ricain \u00e0 la date de cette cession, et le prix d&#8217;acquisition de ces m\u00eames titres, converti en euros sur la base du taux de change du dollar am\u00e9ricain \u00e0 la date de cette acquisition\u201d. Convert the sale proceeds at the rate on the sale date. Convert the acquisition cost at the rate on the acquisition date. Subtract. Do not convert a ready-made sterling gain at today\u2019s rate. A pound that bought the shares in 2015 is not the pound of 2026. The same arithmetic applies to sterling as to the dollar.<\/p>\n<p>Acquisition cost is equally factual. In <a href=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000036586660\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000036586660\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">decision no. 399399 of 7 February 2018<\/a> the Conseil d\u2019\u00c9tat quashed an appeal judgment that had taken as cost only the cash the taxpayer had personally paid on a subscription, without asking whether the unpaid remainder was still a genuine liability forming part of the price. The court sent the case back because the \u201cprix effectif d&#8217;acquisition\u201d is the consideration actually placed on the purchaser, not a figure of convenience. For a British seller that means: keep the 2012 contract note, the dividend-reinvestment statements, the rights-issue letters, the inherited-probate value, and the FX evidence. A missing 2014 purchase note is not cured by \u201cthe UK broker said the gain was \u00a312,000\u201d.<\/p>\n<p>Losses are ring-fenced. Article 150-0 D 11 provides: \u201cLes moins-values subies au cours d&#8217;une ann\u00e9e sont imput\u00e9es exclusivement sur les plus-values de m\u00eame nature, retenues pour leur montant brut avant application, le cas \u00e9ch\u00e9ant, des abattements mentionn\u00e9s aux 1 ter ou 1 quater du pr\u00e9sent article ou \u00e0 l&#8217;article 150-0 D ter, imposables au titre de la m\u00eame ann\u00e9e.\u201d Unused losses carry forward \u201cjusqu&#8217;\u00e0 la dixi\u00e8me inclusivement\u201d. You cannot throw a securities loss against salary, against UK rental income, or against a pension. Service-public.fr, in its English-language sheet on securities gains (F21618), states the same ten-year carry-forward and the order of imputation (current-year losses first, then the oldest carried losses). A UK loss that HMRC has already used against a UK gain still has to be rebuilt under article 150-0 D if you want it on the French return. The two computations can diverge, and they often do.<\/p>\n<p>The rate is no longer the old 19 per cent plus 15.5 per cent social package, and it is no longer the 30 per cent figure that still circulates on forums. <a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000053546896\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000053546896\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">Article 200 A of the CGI<\/a> puts the income-tax limb of the PFU at 12.8 per cent for persons fiscally domiciled in France: \u201cB. 1\u00b0 Le taux forfaitaire mentionn\u00e9 au premier alin\u00e9a du pr\u00e9sent 1 est fix\u00e9 \u00e0 12,8 %\u201d. The same article, just before that rate, records that the holding-period allowance in article 150-0 D 1 ter or 1 quater \u201cil n&#8217;est pas fait application\u201d when the flat rate applies. Social contributions sit on top. <a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000051218166\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000051218166\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">Article L. 136-6 of the social-security code<\/a> charges CSG on the patrimonial income of persons fiscally domiciled in France under article 4 B, including, at e), \u201cDes plus-values, gains en capital et profits soumis \u00e0 l&#8217;imp\u00f4t sur le revenu\u201d. <a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000054336623\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000054336623\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">Article L. 136-8 I 2\u00b0<\/a> of the same code, in the version in force, fixes that CSG rate \u201cA 10,6 % pour les contributions sociales mentionn\u00e9es aux articles L. 136-6 et L. 136-7\u201d. <a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000037949145\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000037949145\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">Article 235 ter III of the CGI<\/a> adds the solidarity levy: \u201cLe taux des pr\u00e9l\u00e8vements de solidarit\u00e9 mentionn\u00e9s au I est fix\u00e9 \u00e0 7,5 %.\u201d The tax administration\u2019s own page, updated on 17 July 2026, states the resulting PFU as a global 31.4 per cent (12.8 per cent income tax and 18.6 per cent social levies). Service-public.fr F21618 says the same 31.4 per cent. That is the figure to work from for a 2026 disposal, not a remembered 30 per cent.<\/p>\n<p>The PFU is the default. It is not a prison. Article 200 A 2 allows a global option for the progressive income-tax scale: \u201cPar d\u00e9rogation au 1, sur option expresse du contribuable, l&#8217;ensemble des revenus, gains nets, profits, plus-values et cr\u00e9ances mentionn\u00e9s \u00e0 ce m\u00eame 1 est retenu dans l&#8217;assiette du revenu net global d\u00e9fini \u00e0 l&#8217;article 158. Cette option globale est exerc\u00e9e lors du d\u00e9p\u00f4t de la d\u00e9claration pr\u00e9vue \u00e0 l&#8217;article 170, et au plus tard avant l&#8217;expiration de la date limite de d\u00e9claration.\u201d The option is all-or-nothing: dividends, interest, share gains, the lot. It can make sense if your other income is low and you still have a pre-2018 holding-period allowance. It can be expensive if you have a large UK pension in the same year. Social levies remain due on the gross gain even if you opt. Impots.gouv.fr tells you to tick box 2OP on the income-tax return. Do the two computations on paper before you tick anything. A tick that is not revoked in time is a tax choice, not a clerical slip.<\/p>\n<h2>II. What if the UK also taxes the gain, and how do I declare and challenge?<\/h2>\n<h3>A. Article 14 of the France\u2013UK treaty, the six-year clawback and the article 24 credit<\/h3>\n<p>French law can tax the gain. The treaty then decides whether the United Kingdom may tax it as well, and how France must relieve any double charge. In the 2008 convention, capital gains are article 14. Article 13 is royalties. Mixing the two numbers is a common internet error and a bad start to a claim. Article 14(1) gives the situs State the right to tax gains on immovable property. Article 14(2) extends a similar situs right to certain unlisted shares, partnership interests and trust interests that derive their value, or the greater part of their value, from immovable property in a contracting State. Article 14(3) covers movable property of a permanent establishment. Article 14(4) covers ships, aircraft and railway vehicles in international traffic. Then comes the residual rule in article 14(5): gains on the alienation of any property not caught by paragraphs 1 to 4 are taxable only in the contracting State of which the seller is a resident.<\/p>\n<p>For a French-resident seller of listed UK ordinary shares, UK tracker funds or most liquid securities, paragraph 5 is the ordinary answer: France only. That is why a clean move, with a clean break of UK residence, often produces a French PFU bill and no UK Capital Gains Tax on those shares. GOV.UK\u2019s page \u201cCapital Gains Tax: what you pay it on\u201d still lists \u201cany shares that are not in an ISA or PEP\u201d among chargeable assets for a UK taxpayer, and it treats \u201cIf you\u2019re abroad\u201d mainly through UK property and land. The treaty residual rule is stricter than a slogan and more useful than a forum post: look at article 14(5) first, then at the exceptions.<\/p>\n<p>The exception that hurts recent arrivals is article 14(6). Paragraph 5 does not stop a contracting State taxing, under its own law, a gain made by a person who is, and who has been at any time in the six preceding tax years, a resident of that State, or who is a resident of that State at any time in the tax year of the disposal. In a British mouth: if you were UK-resident in any of the six UK tax years before the sale, or you are UK-resident in the year of sale, the United Kingdom keeps a treaty right to tax the gain under its domestic rules. That is not a French invention. It is in the published 2008 text. It is why selling the entire ISA and the entire dealing account in the first two years after the removal van arrives in France is a planning decision, not a paperwork afterthought.<\/p>\n<p>Article 14(2) is the other trap, and it is easy to walk into if the \u201cshares\u201d are really a property company. Unlisted shares, parts or rights that derive their value, or the greater part of it, directly or indirectly from immovable property situated in a contracting State, are taxable in the State where that property sits. A UK limited company whose only asset is a cottage in the Dordogne, or a French SCI treated as a shareholding, can fall on the wrong side of paragraph 2. Listed shares \u201cfaisant l&#8217;objet de n\u00e9gociations r\u00e9guli\u00e8res sur un march\u00e9 r\u00e9glement\u00e9\u201d are carved out of that head. If you are selling a private company, read the balance sheet before you read the PFU rate.<\/p>\n<p>When both States tax, France does not ignore the UK bill. It applies article 24 of the same convention (elimination of double taxation). For a French resident, article 24(3)(a) keeps the UK-taxable income in the French computation where French domestic law does not exempt it from corporation tax, and it refuses a deduction of the UK tax from that income. The resident is instead entitled, within the conditions and limits of (i), (ii) and paragraph 4, to a tax credit against French tax. For most items the credit equals the French tax corresponding to the income, provided the resident is subject to UK tax on it. For a listed set of articles \u2014 including paragraphs 1, 2 and 6 of article 14 \u2014 the credit equals the tax paid in the United Kingdom, without exceeding the French tax on that income. A gain that the UK taxes under article 14(6) is therefore in the \u201ctax paid in the United Kingdom, capped by French tax\u201d basket, not in a magical exemption. The credit is claimed; it is not automatic. The Conseil d\u2019\u00c9tat, in <a href=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000050329120\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000050329120\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">no. 472947 of 9 October 2024<\/a>, recalled that a treaty \u201cne peut pas, par elle-m\u00eame, directement servir de base l\u00e9gale \u00e0 une d\u00e9cision relative \u00e0 l&#8217;imposition\u201d and that the judge must first see whether French law validly charges the tax, then whether the convention blocks it \u2014 while still giving effect to clear clauses on the method of eliminating double taxation. The Cour administrative d\u2019appel de Paris, in <a href=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000051453923\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/ceta\/id\/CETATEXT000051453923\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">no. 23PA02576 of 11 April 2025<\/a>, applied article 24 of the 2008 convention (in that case to employment income under article 15) as a live credit mechanism. The same article 24 is the one you invoke for a 14(6) share gain. Do not cite the 1968 convention; it is not the text in force for a 2026 disposal.<\/p>\n<p>Proof of the UK tax actually paid is not a screenshot of a tax-return summary. It is the HMRC calculation, the payment record, and a consistent residence position. A credit for tax that was never due, or that was later repaid, will not survive a <em>contr\u00f4le sur pi\u00e8ces<\/em> (desk audit). If HMRC did not tax the gain because you were non-resident and article 14(5) applied, there is nothing to credit: you pay the French PFU and you stop. If HMRC did tax it under the six-year clause, you pay France, you claim the article 24 credit up to the French tax on that gain, and you keep both computations. Social levies are a further argument. They are charged by L. 136-6 on French tax residents. A treaty credit built for income tax does not always wash out CSG, CRDS and the solidarity levy. That is a separate legal question, to be argued on the text of the convention\u2019s taxes covered and on the case-law, not by asserting that \u201cPFU is 31.4 per cent so the UK bill wipes it all\u201d.<\/p>\n<h3>B. Form 2074, the r\u00e9clamation deadline and how to challenge a reassessment<\/h3>\n<p>The declaration is not optional because \u201cthe UK broker already reported it to HMRC\u201d. Impots.gouv.fr describes form 2074 as the return for \u201cplus ou moins values sur cessions de valeurs mobili\u00e8res, droits sociaux, titres assimil\u00e9s\u201d, to be attached to the income-tax return. The 2026 mill\u00e9sime is online with notice 2074-NOT. Service-public.fr F21618 adds that you declare the gain with the income of the year of the sale, that a French bank will usually give you a 2561-TER summary for French accounts, and that online filing is mandatory if your main home has internet access. A UK platform will not issue a 2561-TER. You rebuild the 2074 from contract notes, FX rates and article 150-0 D. That is exactly what the taxpayers in Conseil d\u2019\u00c9tat 443914 had done \u2014 \u201cun gain net de 55 040 euros dans l&#8217;annexe n\u00b0 2074 jointe \u00e0 leur d\u00e9claration de revenu global\u201d \u2014 before the desk audit recomputed the dollars. The lesson is not \u201cavoid the 2074\u201d. It is \u201cfile it with the method the court later approved, not with a converted UK CGT figure\u201d.<\/p>\n<p>On the same return you report the foreign credit, where there is one, on the 2047 annex and the corresponding boxes of the 2042. Article 200 A itself, for foreign investment income taxed at the flat rate, states that withholding tax \u201cest imput\u00e9 sur l&#8217;imposition \u00e0 taux forfaitaire dans la limite du cr\u00e9dit d&#8217;imp\u00f4t auquel il ouvre droit, dans les conditions pr\u00e9vues par les conventions internationales.\u201d Share disposals are not always withholding situations; UK brokers rarely withhold CGT at source. The credit you need is the article 24 credit for tax paid, not a 15 per cent dividend withholding. Mixing the dividend boxes with the 2074 boxes is a classic source of a later <em>proposition de rectification<\/em> (proposed reassessment). Keep the 2074, the 2047 and the 2042 talking to each other. If the pre-filled 2042 shows nothing because the broker is in London, silence is not a filing. You add the line.<\/p>\n<p>When the assessment is wrong \u2014 wrong FX, a gain that was not a disposal, a 14(5) gain treated as if the UK had taxing rights, a refused credit, social charges on a person who argues a different social-security flag \u2014 the first remedy is a <em>r\u00e9clamation contentieuse<\/em> (formal tax claim). <a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000054553358\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000054553358\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">Article R*196-1 of the <em>livre des proc\u00e9dures fiscales<\/em><\/a> (LPF, the tax-procedure book), in the version in force from 30 July 2026, provides: \u201cPour \u00eatre recevables, les r\u00e9clamations relatives aux imp\u00f4ts autres que les imp\u00f4ts directs locaux et les taxes annexes \u00e0 ces imp\u00f4ts, doivent \u00eatre pr\u00e9sent\u00e9es \u00e0 l&#8217;administration au plus tard le 31 d\u00e9cembre de la deuxi\u00e8me ann\u00e9e suivant celle, selon le cas : a) De la mise en recouvrement du r\u00f4le ou de la notification d&#8217;un avis de mise en recouvrement ; b) Du versement de l&#8217;imp\u00f4t contest\u00e9 lorsque cet imp\u00f4t n&#8217;a pas donn\u00e9 lieu \u00e0 l&#8217;\u00e9tablissement d&#8217;un r\u00f4le ou \u00e0 la notification d&#8217;un avis de mise en recouvrement ; c) De la r\u00e9alisation de l&#8217;\u00e9v\u00e9nement qui motive la r\u00e9clamation.\u201d For a 2025 disposal assessed in 2026, the ordinary long-stop is 31 December 2028, counted from the year of the roll or of the assessment notice. Do not wait for that date. A claim filed while the facts, the contract notes and the HMRC papers are still on the same desk is a different file from a claim filed after the broker has closed the account.<\/p>\n<p>If the administration\u2019s decision on the claim does not give full satisfaction, the dispute goes to the administrative court. <a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000039807005\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000039807005\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">Article R. 421-1 of the code of administrative justice<\/a> states: \u201cLa juridiction ne peut \u00eatre saisie que par voie de recours form\u00e9 contre une d\u00e9cision, et ce, dans les deux mois \u00e0 partir de la notification ou de la publication de la d\u00e9cision attaqu\u00e9e.\u201d Two months from notification of the decision on the claim. Income tax and the social charges collected like income tax are an administrative-court matter. A British client in Paris will usually face the Direction r\u00e9gionale des finances publiques d\u2019\u00cele-de-France and, if the claim fails, the Tribunal administratif de Paris. A client in Lyon or Bordeaux files in the local tax directorate and the local administrative court. The two-month clock does not start from a telephone call with an inspector. It starts from the notified decision.<\/p>\n<p>Pay attention to the 10 per cent surcharge. <a href=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000051219475\" class=\"kohen-legifrance-popup-link\" data-kohen-legifrance-url=\"https:\/\/www.legifrance.gouv.fr\/codes\/article_lc\/LEGIARTI000051219475\" data-kohen-legifrance-title=\"Texte officiel Legifrance\" target=\"_blank\" rel=\"noopener\">Article 1730 of the CGI<\/a> provides: \u201c1. Donne lieu \u00e0 l&#8217;application d&#8217;une majoration de 10 % tout retard dans le paiement des sommes dues au titre de l&#8217;imp\u00f4t sur le revenu, des contributions sociales recouvr\u00e9es comme en mati\u00e8re d&#8217;imp\u00f4t sur le revenu [\u2026]\u201d. The surcharge applies to sums on a roll or an <em>avis de mise en recouvrement<\/em> (collection notice) that have not been paid within forty-five days of the collection date. A r\u00e9clamation can be coupled with a request to postpone payment, on conditions. Ignoring the yellow notice because \u201cthe UK already taxed me\u201d is how a 31.4 per cent debate becomes a 31.4 per cent plus 10 per cent plus late-payment interest file. If the underlying tax is later discharged, the surcharge that sat on it falls with it. If it is not, you will have paid for the delay.<\/p>\n<p>What actually wins these files is tedious and specific. For a denied credit: the treaty article (14(5) or 14(6) plus 24(3)(a)(ii)), the HMRC computation, proof of payment, and a residence analysis that does not contradict the UK return. For a bloated euro gain: the two-date FX method of Conseil d\u2019\u00c9tat 443914, Banque de France or tax-office rates, and the contract notes. For a \u201cthis was not a disposal\u201d: the legal nature of the event (conversion inside a fund, bed-and-breakfast, gift to a spouse, death). For a property-company argument: article 14(2) and the asset mix. For a person who says they were never French-resident: article 4 B and article 4 of the treaty, with calendars, leases and school certificates, not a covering letter. The tax office will not reconstruct your 2016 purchase price from memory. Neither will the court.<\/p>\n<p>A last practical point on banks. A French establishment must report French-account disposals. A UK platform is under UK reporting. The French tax office still receives financial-account information under the common reporting standard. A 2074 that omits a London dealing account because \u201cit is not a French bank\u201d is a concealment risk, not a clever reading of the form. Declare the account on 3916 as well; that form is about the existence of the foreign account, already covered on this site, and it does not replace the 2074. Two forms, two jobs.<\/p>\n<h2>Conclusion<\/h2>\n<p>A British tax resident of France who sells UK shares is, first, inside article 4 A and article 150-0 A. The gain is a euro figure under article 150-0 D, with each sterling amount converted on its own date, as the Conseil d\u2019\u00c9tat required in 443914. The default charge is the PFU: 12.8 per cent under article 200 A B 1\u00b0 plus the social contributions in L. 136-6, L. 136-8 (10.6 per cent CSG on that class) and article 235 ter (7.5 per cent solidarity), presented by the tax administration as 31.4 per cent overall. The progressive-scale option exists, is global, and is exercised on the return. Losses stay inside the securities basket for up to ten years.<\/p>\n<p>The 2008 treaty, still in force after Brexit, then sorts the United Kingdom. Article 14(5) gives ordinary listed-share gains to the residence State. Article 14(6) keeps a UK taxing right where the seller was a UK resident in any of the six previous tax years or in the year of sale. Article 14(2) can drag an unlisted property vehicle back to the situs State. Where the UK has taxed under paragraph 6, article 24(3) gives a French credit equal to the UK tax, capped by the French tax on that income. The credit is claimed on the 2047. The gain itself is declared on the 2074. A wrong assessment is attacked by a r\u00e9clamation within article R*196-1, then, if needed, before the administrative court within two months under article R. 421-1. Article 1730\u2019s 10 per cent surcharge runs on unpaid rolls. None of that is solved by a UK broker\u2019s sterling PDF, by an ISA label, or by the belief that Brexit cancelled the 2008 convention. It did not.<\/p>\n<h2>Need a quick opinion on your case.<\/h2>\n<p>A telephone consultation with a lawyer of the firm can be arranged within 48 hours to review your contract notes, your 2074, any HMRC computation and any proposed reassessment.<\/p>\n<p>Call <a href=\"tel:+33646605822\">+33 6 46 60 58 22<\/a> (Ma\u00eetre Reda Kohen). Write through the <a href=\"https:\/\/kohenavocats.fr\/formulaire-de-contact\/\">contact form<\/a>. The firm advises British residents and families from Paris and \u00cele-de-France, including files before the Direction r\u00e9gionale des finances publiques d\u2019\u00cele-de-France and the Tribunal administratif de Paris.<\/p>\n<p>Related reading: <a href=\"https:\/\/kohenavocats.fr\/en\/2026\/09\/03\/british-couples-france-uk-tax-residence-proof-brexit\/\">how to prove tax residence when a couple is split between France and the UK<\/a>; <a href=\"https:\/\/kohenavocats.fr\/en\/2026\/09\/10\/british-resident-france-uk-dividends-tax-treaty-credit-challenge-brexit\/\">UK dividends once you are a French resident<\/a>; <a href=\"https:\/\/kohenavocats.fr\/en\/2026\/09\/11\/british-resident-france-selling-uk-house-cgt-treaty-credit-challenge-brexit\/\">selling a UK house from France, the treaty credit and how to challenge double tax<\/a>; <a href=\"https:\/\/kohenavocats.fr\/en\/2026\/09\/04\/uk-isa-france-tax-resident-declare-tax-free-status-after-brexit\/\">whether a UK ISA stays tax-free after you become a French resident<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>French tax on a sale of UK shares after you move: article 150-0 A, the 31.4% PFU, form 2074, treaty article 14(6) and how to challenge double tax.<\/p>\n","protected":false},"author":251031309,"featured_media":16358,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kj_source_type":"","_kj_official_id":"","_kj_official_url":"","_kj_judilibre_id":"","_kj_jur":"","_kj_lieu":"","_kj_chambre":"","_kj_rg":"","_kj_date":"","activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":4,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"federated","footnotes":""},"categories":[80312,80314],"tags":[],"class_list":["post-2119538","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-british-desk","category-decryptage"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.2 (Yoast SEO v28.2) - 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