You retired to the Dordogne, or you plan to join your partner in Lyon, and one question keeps you awake: what happens to the UK State Pension once you live in France? Will the yearly increase still arrive, where is the pension taxed, and what do you do when the French tax office sends a bill that looks like double taxation? Since Brexit, these questions have become harder, because you now live in France as a third-country national, your residence rights sit under the Withdrawal Agreement or a French residence permit (titre de séjour, the card that proves your legal right to live in France), and every cross-border payment is examined more closely than before.
This guide answers the three worries in order. First, whether your State Pension keeps rising in France under the annual uprating and the triple lock (the UK rule that raises the pension each year by the highest of earnings growth, price inflation, or 2.5 per cent). Second, how France taxes the pension once you are resident here, including the 10 per cent allowance, the declaration on the foreign-income form and the main return, and the treaty rule that gives France the taxing right. Third, whether the French social charges apply to you when you hold an S1 healthcare certificate (the form by which the UK pays for your French healthcare), and how you challenge a frozen pension, a wrong tax bill, or social charges levied when you should be exempt. Throughout, every French term is explained, and every decisive legal point is tied to the exact official text, so you can act with confidence and check each claim at source.
I. Will your UK State Pension still increase in France and how do you keep it in payment?
A. Will the triple lock follow you to France or will your pension freeze?
The good news comes first. France belongs to the European Economic Area (EEA, the group of European Union countries plus Iceland, Liechtenstein and Norway), and the British government states the rule plainly on State Pension if you retire abroad: how your pension is affected: the pension is increased each year for people living in the European Economic Area (EEA), Gibraltar, Switzerland and the countries holding a social security agreement with the United Kingdom. Because you live in France, your State Pension keeps its yearly increase, including the triple-lock uplift, exactly as if you still lived in Manchester or Kent. Readers who move further afield should note the warning on the same page: outside those countries, no yearly increase is paid. A move from France to a country without such an agreement would freeze the pension at the amount payable on the date of departure, and only a return to live in the United Kingdom would bring it back up, since the pension is then restored to the current rate.
Three practical points follow from this. First, the increase is never automatic in the administrative sense: the Pension Service applies it, but only while its records show you at a French address and while you answer its checks. Tell the Pension Service before you move, give your French bank details or keep a UK account for payment, and keep every letter that confirms the new rate each April. Second, the uprating question is entirely separate from the tax question. The fact that the United Kingdom pays the increase does not mean the United Kingdom taxes it. For a person who lives in France, the pension is normally taxable only in France, as Part II explains, even though the cash continues to come from London. Third, do not confuse the State Pension with a workplace pension paid for government service. A civil service, armed forces, police, fire service or local authority pension falls under the government service article of the treaty, which keeps the taxing right with the paying State in most cases, while the ordinary State Pension and private-sector pensions fall under the pensions article, which gives the taxing right to the country where you live. If you receive both a State Pension and a former public-sector occupational pension, each one is analysed on its own, and the two can be taxed in two different countries.
One misunderstanding causes more correspondence with Newcastle than any other. Some new arrivals read that their pension will be “frozen” because Britain left the European Union. That freeze applies to pensioners in countries such as Australia or Canada, not to pensioners in France. The social security coordination between the United Kingdom and the European Union, preserved for people in scope of the Withdrawal Agreement and continued for new movers through the Trade and Cooperation Agreement protocol on social security, keeps France inside the uprating zone. If the Pension Service ever tells you that your pension has been held at its old amount, treat the letter as an administrative error to be challenged with proof of French residence, not as a consequence of Brexit. Send your French residence permit or visa, your French tax notice (avis d’impôt, the official assessment showing you are taxed in France), and a recent utility bill, and ask for the arrears of the missed increases to be restored. Keep copies of everything, because the same file will serve again if the French tax office later asks why a British pension appears on your French return.
Finally, remember that deferral still works from France. If you delay claiming the State Pension, the amount grows for each period of deferral under British rules, and the higher amount is then paid in France and taxed in France under the same treaty rule. The decision to defer is a financial calculation, not a legal one, but the legal frame matters: the extra amount is pension income, declared and taxed exactly like the basic amount, and it carries the same 10 per cent French allowance described below. Take regulated financial advice before deferring, and keep the Pension Service letter that states the deferred rate, because the French tax office may ask for the breakdown between the basic pension and the deferral increment.
B. How do you have the pension paid to France and satisfy the life certificate?
You can have the State Pension paid into a French bank account in euros or into a British account in sterling. Payment into France is made through the standard overseas payment service, and the exchange rate applied is the one used by the paying authority on the day of transfer. Keeping a British account can be convenient for direct debits on a remaining UK property or insurance, but once you are resident in France (résident fiscal, the person whose tax home is in France), the pension must be declared in France wherever it is paid. The place of payment never decides the place of taxation. Many readers keep both accounts for a transition year and then consolidate, and either choice is lawful as long as the declaration is complete.
The document that causes the most anxiety is the life certificate (certificat de vie, the form by which a foreign pension fund checks that you are still alive). The British authorities send it periodically, and payment can be suspended if it is not returned. Have it signed and stamped by your mairie (the town hall of your French commune), which performs this service routinely, and return it by the deadline shown on the form, keeping a photocopy and proof of posting. If payment stops, telephone the Pension Service first for an immediate review, then follow up in writing so the restoration is traceable. A suspension for a missing certificate is not a penalty and not a finding against you; once the certificate arrives, the arrears are released. Readers who spend part of the year in Britain should keep one consistent correspondence address and inform the Pension Service of any change, because a letter sent to an old address is the commonest cause of an avoidable suspension.
Two related files deserve the same discipline. First, your S1 healthcare certificate (the document by which the United Kingdom accepts the cost of your healthcare in France). If you draw a British State Pension and move to France, you are normally entitled to an S1 from the United Kingdom, which you register with your local caisse primaire d’assurance maladie (CPAM, the local branch of the French health insurance system). Registration puts you into the French health system without monthly French health contributions on the pension itself, and, as Part II explains, it is also the key to exemption from two French social charges. Apply for the S1 before you leave or immediately after arrival, register it promptly, and keep the CPAM attestation (the certificate confirming your registration) with your tax file. Second, your French residence file. Whether you hold a Withdrawal Agreement card or a subsequent residence permit, keep it valid and keep copies of each renewal. The Pension Service, the CPAM and the tax office each ask for it in turn, and a coherent file in which the address, the permit, the S1 and the tax notice all agree is the fastest way to close any enquiry.
A short word on currency and charges, because it affects the amount you actually live on. A pension paid into France is converted into euros, so a weak pound reduces your French purchasing power while a strong pound increases it. No legal remedy exists against the exchange rate itself, but you can reduce friction by comparing the transfer conditions of your bank with those of a regulated currency provider, by timing large transfers away from known volatility where possible, and by keeping a modest sterling buffer for fixed British outgoings. What matters legally is that you declare the euro amount actually received, using the official annual rate published by the French tax administration where a conversion rule applies, and that you keep the bank statements that prove the figures. Precision here prevents reassessment later: the tax office (service des impôts des particuliers, your local personal tax office) trusts a file whose pension figure matches the bank credits to the euro.
II. How does France tax your State Pension and how do you challenge the wrong bill?
A. Which country taxes your State Pension and how do you declare it on forms 2047 and 2042?
Once you live in France permanently, you normally become a French tax resident (domicilié fiscal, the person treated as having their tax home in France). The statute defines this in plain terms: “Sont considérées comme ayant leur domicile fiscal en France au sens de l’article 4 A : a. Les personnes qui ont en France leur foyer ou le lieu de leur séjour principal ; b. Celles qui exercent en France une activité professionnelle, salariée ou non, à moins qu’elles ne justifient que cette activité y est exercée à titre accessoire ;” as stated in article 4 B of the Tax Code (code général des impôts). In practice, a British retiree whose home, spouse and daily life are in France meets the first test from the year of arrival, even if the pension continues to be paid from London. From that point, French law brings the pension into the French taxable base, because “Les traitements, indemnités, émoluments, salaires, pensions et rentes viagères concourent à la formation du revenu global servant de base à l’impôt sur le revenu. Il en est de même des prestations de retraite servies sous forme de capital.” under article 79 of the Tax Code. The treaty then confirms that France, as the country of residence, holds the taxing right over an ordinary pension: Article 18 of the France-United Kingdom Double Taxation Convention signed in London on 19 June 2008 provides that pensions and similar remuneration paid for past employment to a resident of one State are taxable only in that State, subject to the government-service rule in Article 19(2)., published in France by Decree No 2010-20 of 7 January 2010, which published the Convention that entered into force in December 2009 The reservation for Article 19 covers government service pensions, which follow their own rule and are examined in our companion analysis of workplace and Crown pensions; the State Pension itself sits squarely under Article 18 and is taxable only in France when you live here. Readers who want the wider treaty machinery, including the mutual agreement procedure for cases where both countries claim the tax, can read our detailed guide to double tax relief between France and the United Kingdom through mutual agreement and arbitration.
French taxation of the pension is softened by a built-in allowance. The statute provides that “Les pensions et retraites font l’objet d’un abattement de 10 % qui ne peut excéder 4 439 €.” under article 158, 5, a of the Tax Code. The allowance (abattement, a flat-rate deduction applied before the tax scale) is calculated per pensioner in the household (foyer fiscal, the group of spouses and dependants taxed together), with a minimum of 454 euros, and the ceiling is revised each year with the income-tax scale. In concrete terms, a retiree whose only income is a State Pension of 12,000 euros declares 12,000 euros and is taxed on 10,800 euros after the allowance, before the progressive scale (barème, the graduated rates) is applied. A couple with two State Pensions applies the allowance to each pension separately within the household ceiling. Keep the annual pension statement (relevé annuel, the yearly summary issued by the payer) that proves the gross amount, because the allowance is computed by the tax office itself and any dispute turns on the gross figure entered on the return.
Declaration follows a fixed two-step path that first-time filers often get wrong. The law requires that “En vue de l’établissement de l’impôt sur le revenu, toute personne imposable audit impôt est tenue de souscrire et de faire parvenir à l’administration une déclaration détaillée de ses revenus et bénéfices, de ses charges de famille et des autres éléments nécessaires au calcul de l’impôt sur le revenu” under article 170 of the Tax Code. For a British pension, the first step is the foreign-income annexe: enter the State Pension in the pensions section of form 2047, the declaration of income received abroad, showing the United Kingdom as the country of origin. The second step is to carry the same amount onto the main return, form 2042, the overall income-tax return, in the pensions boxes, so that the allowance and the scale apply correctly. The impots.gouv.fr guidance on foreign income explains this carry-over mechanism and the boxes to use. Three errors recur every spring: omitting the 2047 annexe and entering the pension only on the 2042, which prompts an enquiry; converting the sterling amount at the wrong rate, when the administration publishes the rate to use; and forgetting to tick the box that identifies the income as a foreign pension, which can lead the software to deny the correct treatment. File online through your espace particulier (the personal account on impots.gouv.fr), keep the PDF of each submitted form, and check the resulting tax notice line by line when it arrives in late summer.
The year of arrival deserves special attention. If you move to France mid-year, you may be treated as non-resident for the part of the year before the move and resident afterwards, which lawyers call a split year in ordinary language though the French system handles it through the dates of arrival and the residence tests. Only the pension instalments received while resident in France fall into the French base for that year, but the whole file must be consistent: the date of arrival on the return, the address history, the residence permit and the S1 registration should all tell the same story. The year of departure works symmetrically if you return to Britain. Where both countries assert residence for the same period, the treaty tie-breaker decides, examining in turn the permanent home, the centre of vital interests, the habitual abode and nationality. That analysis is developed in our companion piece on dual residence, and it should be raised early, with evidence, rather than left for the objection stage.
B. Do French social charges apply when you hold an S1, and how do you challenge double taxation?
Beyond income tax, France levies social charges (prélèvements sociaux, the contributions that fund social protection) on pension income, principally the general social contribution (CSG, contribution sociale généralisée) and the contribution for the repayment of the social debt (CRDS, contribution pour le remboursement de la dette sociale). The rates on replacement income are significant, so the question whether they apply to your State Pension changes your net income materially. The starting rule looks broad. The Court of Cassation recalls that “sont inclus dans l’assiette de la contribution sur les revenus d’activité et de remplacement perçue au titre de la contribution sociale généralisée (CSG), pour leur montant brut, les traitements, indemnités, émoluments, salaires, allocations, pensions y compris les majorations et bonifications pour enfants, des rentes viagères autres que celles visées au 6 de l’article 158 du code général des impôts” in Cass. 2nd civ., 8 October 2020, No 19-16.078, and that “la contribution sur les revenus d’activité et de remplacement perçue au titre de la contribution pour le remboursement de la dette sociale (CRDS) est assise sur les revenus visés, notamment, à l’article L. 136-2 du code de la sécurité sociale.” The full pioneering analysis sits in article L. 136-2 of the Social Security Code (code de la sécurité sociale), read with article L. 136-6 of the same Code for income from assets. Taken alone, these texts would suggest that every French-resident pensioner pays the charges on a British pension.
The decisive limit comes from the affiliation condition. The statute states that “Il est institué une contribution sociale sur les revenus d’activité et sur les revenus de remplacement à laquelle sont assujettis : 1° Les personnes physiques qui sont à la fois considérées comme domiciliées en France pour l’établissement de l’impôt sur le revenu et à la charge, à quelque titre que ce soit, d’un régime obligatoire français d’assurance maladie” under article L. 136-1 of the Social Security Code. The two conditions are cumulative: French tax residence plus affiliation to a compulsory French health scheme (prise en charge, being covered by the French system as your competent State). A British State pensioner who holds an S1 registered in France is covered for healthcare at the expense of the United Kingdom, not of France, and for social security purposes remains attached to the British system. Such a pensioner is therefore outside the second condition and should not bear CSG and CRDS on the State Pension, though income tax remains fully due. The administrative courts apply the mirror of this reasoning when the conditions are met: where a French resident draws a foreign pension while covered by the French scheme, the charges stand, since “la convention franco-monégasque de sécurité sociale ne fait pas obstacle à ce qu’un ressortissant français résidant en France, qui a cotisé en tant que salarié à un régime de protection sociale monégasque, soit assujetti en France à la contribution sociale généralisée et à la contribution pour le remboursement de la dette sociale à raison de la pension d’origine monégasque” in CAA Marseille, 26 June 2018, No 17MA02711. The lesson is symmetrical and practical: affiliation decides. S1 holders are outside the charges; pensioners affiliated to the French universal scheme (PUMA, protection universelle maladie, the French residence-based health cover) without an S1 are inside them.
When the wrong bill arrives, the remedy depends on its nature. If the United Kingdom has continued to deduct tax at source under PAYE (pay as you earn, the British withholding system) while France taxes the same pension, claim the treaty relief in Britain first: complete the double-taxation claim form for France, attach the French tax notice once available, and ask HM Revenue and Customs for repayment with a direction for future gross payment. If the French notice charges CSG and CRDS although your S1 was registered for the whole year, file a formal objection (réclamation contentieuse, the written claim that opens the dispute) with your tax office, enclosing the S1, the CPAM registration attestation, and the British pension statements, and ask for discharge of the two charges while accepting the income-tax line. If each country claims full residence and taxes the pension without relief, the treaty provides the mutual agreement procedure, under which the two administrations negotiate your case; the Conseil d’État has clarified the architecture of the Franco-British relief in a leading opinion, holding that “Il résulte des stipulations de l’article 24 de la convention fiscale franco-britannique du 19 juin 2008, qui doivent être interprétées conformément au sens ordinaire à attribuer à leurs termes, dans leur contexte et à la lumière de leur objet et de leur but, que la condition prévue à l’alinéa (i) du a) du paragraphe 3 de cet article, tenant à ce que le résident de France soit soumis à l’impôt du Royaume-Uni à raison des revenus non mentionnés à l’alinéa (ii), pour que ces revenus lui ouvrent droit à un crédit d’impôt égal au montant de l’impôt français correspondant à ces revenus, signifie que les revenus en cause doivent être compris dans la base de ” l’impôt du Royaume-Uni ” au sens du a) du paragraphe 1 de l’article 2 de la même convention, sans que le résident de France en soit exonéré à raison de son statut ou de son activité.” in CE, opinion, 12 February 2020, No 435907, adding that “la condition prévue à l’alinéa (i) du a) du paragraphe 3 de l’article 24 de la convention doit être regardée comme satisfaite s’il est établi par le résident de France qu’il a déclaré les revenus en cause au Royaume-Uni, parce que ces revenus étaient compris dans la base de l’un des impôts énumérés au a) du 1 de l’article 2 de la convention, alors même qu’il n’aurait acquitté dans cet Etat aucun impôt à raison de ces revenus.” For State Pensions taxable only in France, this credit machinery rarely applies, but the opinion matters whenever a second income item, such as rental income or a lump sum, sits beside the pension on the same notice. In every case, respect the time limits printed on the notice, pay the sums that are not disputed where payment suspends penalties, and never let a file go past the deadline while waiting for the other country to reply.
Conclusion
Your British State Pension follows you to France and keeps its yearly increase, because France sits inside the uprating zone and the British rule preserves the triple lock here. Once you are settled, France taxes the pension as your country of residence under Article 18 of the 2008 treaty, with a 10 per cent allowance per pensioner and declaration through forms 2047 and 2042. The social charges turn on healthcare affiliation rather than on the pension itself: with a registered S1 you stand outside CSG and CRDS on the pension, while affiliation to the French scheme brings the charges into play. Keep the four documents that prove each link in the chain, namely the Pension Service rate letters, the S1 with its CPAM registration, the bank statements that match the declared figures, and every French tax notice. When an office errs, challenge the precise line that is wrong, with the exact text that governs it, and the file normally returns to order within one cycle.