Receiving a UK Civil Service pension while living in France creates a question that cannot be answered by looking only at the country that sends the payment. The decisive points are the pension scheme, the public body that financed it, the services for which it was paid, your tax residence, your nationality and the way the France–UK tax treaty removes double taxation. A former civil servant may therefore face a French tax calculation that includes the pension without France having the final right to tax the same pension as ordinary French income.

That distinction matters after Brexit. Brexit changed immigration and social-security arrangements, but it did not replace the bilateral convention signed in London on 19 June 2008. Article 19 contains a special rule for government-service pensions. Article 18 applies to many other pensions. The result can be very different for a Civil Service pension, a UK State Pension, an NHS pension or a private occupational pension.

This guide explains the legal test, the French declaration route, the evidence to retain and the remedies available when a French assessment taxes the same payment twice. It is aimed at a British reader who is resident, or believes they are resident, in France. The examples are practical, but the scheme rules and the exact payer must be checked before any return is amended or any claim is filed.

I. Is my UK Civil Service pension taxable in France after Brexit?

A. Is it really a government-service pension, or a State Pension, NHS pension or private pension?

The first mistake is to treat every UK pension as a government pension. The label “public service” used in UK pensions legislation is not, by itself, the answer under the France–UK convention. The treaty asks whether the payment is made by, or out of funds created by, the United Kingdom, a local authority or, for France, a public-law body, and whether it is paid in respect of services rendered to that body.

A pension from the UK Civil Service is the clearest example of the government-service category. A pension from a UK local authority can also fall within it. Police, fire and certain local-government schemes require a closer review of the employing or paying body. The pension statement, scheme name, administrator and historical employer should be kept together. A change of administrator does not necessarily change the legal source, but a payment made by an insurer or a commercial provider may require documents showing whose public scheme it represents.

The UK State Pension is different. HM Revenue & Customs explains in its public guidance that the State Pension is not classed as a government pension for double-tax purposes. It is normally analysed under the ordinary pension rule in Article 18, subject to the wording of the treaty and the facts of the recipient’s residence. The same guidance warns that an NHS pension is not automatically a government pension: if it is paid by CAPITA or the Paymaster General’s Office it is not classed as one for double-tax purposes, while a pension paid by a local authority may be treated differently. Read the current HMRC government-pension guidance with the payment documents rather than relying on the everyday description of the job.

A private occupational pension, a personal pension, a SIPP and most annuity arrangements usually start with Article 18 rather than Article 19. Article 18 covers “pensions and other similar remuneration paid in consideration of past employment”. Under that rule the residence state generally has the taxing right. This is why an article about a Civil Service pension cannot be copied across to a private pension or to a UK State Pension without a new analysis. For the separate National Insurance question, see our guide to voluntary National Insurance and the UK State Pension after moving to France.

French domestic law gives the tax authority a broad starting point. Article 79 of the Code général des impôts (French General Tax Code, or CGI) states:

« 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. »

The official text is available in CGI Article 79. In plain English, French domestic law normally puts pensions into the income-tax base. The treaty then allocates the taxing right and supplies the mechanism for relief. A French tax notice that starts from Article 79 is not necessarily unlawful; the problem may be that the treaty credit or exemption has not been applied afterwards.

Source and category also matter if the pension is confused with a French-source payment. Article 164 B, II of the CGI provides:

« II. Sont également considérés comme revenus de source française lorsque le débiteur des revenus a son domicile fiscal ou est établi en France : a. Les pensions et rentes viagères ; »

See the official CGI Article 164 B. That domestic-source rule concerns a pension whose debtor is established in France. It does not turn a UK Civil Service pension into a French-source pension merely because the recipient lives in France or because a French bank receives the money. Keep the payer’s identity and the scheme’s legal basis visible in the file.

The practical classification checklist is short but important:

• identify the original public employer and the scheme, not only the bank or payment administrator;
• separate the Civil Service pension from the UK State Pension, an NHS pension and any private scheme;
• check whether the payment includes a lump sum, survivor’s benefit, injury benefit or another component with a different treaty treatment;
• record the tax years, gross amounts, UK tax withheld, tax code and any HMRC correspondence; and
• ask the payer for a written description of the scheme where the pension statement uses an abbreviated name.

That evidence is not administrative decoration. The dispute may turn on whether the payment was made “in respect of services rendered” to the UK government or to a public body, and whether a part of the payment is an exempt injury or illness benefit. A pensioner who supplies only a bank statement leaves the tax authority with little material from which to identify the treaty article.

B. Does Article 19 of the France–UK tax treaty leave the pension taxable in the UK?

For a genuine UK government-service pension, Article 19(2) is the starting rule. The official English version of the 2008 UK–France Double Taxation Convention in force says in Article 18 that ordinary pensions are taxable only in the recipient’s state of residence, “Subject to the provisions of paragraph 2 of Article 19”. Article 19 is therefore an exception that must be tested before Article 18 is used.

Article 19(2) states:

“Pensions and other similar remuneration paid by, or out of funds created by, a Contracting State or a local authority thereof, or, in the case of France, a statutory body, to an individual in respect of services rendered to that State, authority or statutory body shall be taxable only in that State.”

For a British national who is resident in France and receives a qualifying UK Civil Service pension, this normally means that the pension is taxable only in the United Kingdom. The phrase “only in that State” refers to the state that paid the pension in return for the public service: the UK for a UK Civil Service pension. France remains the residence state, but the treaty can prevent France from charging ordinary income tax on the pension itself.

There is a nationality exception. The second sentence of Article 19(2) says:

“However, such pension shall be taxable only in the other Contracting State if the individual is a resident and a national of that State without being also a national of the first-mentioned State.”

Applied to a UK pension, that exception can move the taxing right to France where the recipient is resident and a French national, but is not also a UK national. A British citizen who has acquired French nationality normally remains a UK national as well, so the wording “without being also a national of the first-mentioned State” must be considered carefully. A person who has genuinely ceased to hold UK nationality may present a different case. Nationality should be proved by the relevant documents, not inferred from a residence card, a French address or the fact that a person has lived in France for many years.

Article 19(3) contains another boundary: the special public-service rules do not necessarily govern a pension paid for services rendered in the course of a business carried on by a state, local authority or public-law body. The treaty sends those payments back to Articles 15, 16, 17 and 18. That is a reminder that the employment history and the nature of the activity matter. A public employer alone does not resolve every mixed or commercial scheme.

Article 19(4) also protects particular exempt pensions. The treaty refers to French CGI Article 81 pensions and to specified UK pensions under section 641(1)(a) to (g) of the Income Tax (Earnings and Pensions) Act 2003, as well as certain armed-forces injury or illness benefits. Those payments can be exempt in France while they remain exempt in the UK. The treaty then states that Article 19(2) applies to any fraction that is not exempt in the UK. A pensioner should therefore split the components instead of claiming a blanket exemption for an entire payment.

The treaty was signed on 19 June 2008, published in France by Décret n° 2010-20 and the France–UK convention on Légifrance, and applies under its Article 31 rules. Brexit did not repeal it. The Withdrawal Agreement and residence arrangements may affect other rights, but they do not convert Article 19 into Article 18 or remove the need to analyse the payer.

French residence is itself a factual and treaty question. Under CGI Article 4 B, a person can be treated as fiscally resident in France through their home or main stay, professional activity or economic interests, subject to international treaty residence rules. The current official text provides:

« Les personnes qui satisfont à l’un au moins des critères fixés aux a à c du présent 1 ne peuvent toutefois pas être considérées comme ayant leur domicile fiscal en France lorsque, par application des conventions internationales relatives aux doubles impositions, elles ne sont pas regardées comme résidentes de France. »

This passage appears in CGI Article 4 B. The French expression domicile fiscal means tax residence. A UK resident under domestic UK rules can still be treaty-resident in France after the treaty tie-breaker is applied. Establishing the correct residence is therefore a preliminary step before Article 19 can be claimed.

Do not use the six-month or 183-day idea as a substitute for that analysis. A day count may be relevant to a particular treaty article, but a Civil Service pension is allocated under Article 19 by its public-service source, while residence and nationality determine the exception. The fact that the pensioner spends time in the UK, keeps a UK home, or travels to see family does not by itself decide the taxing right.

II. How do I declare or challenge a UK Civil Service pension in France?

A. Which French return, evidence and treaty credit prevent double taxation?

A treaty exemption does not mean “leave the pension out of every French form”. Article 24(3) of the France–UK convention sets out France’s method for eliminating double taxation. For income taxable, or taxable only, in the UK, France can take the income into account when calculating French income tax and grant a credit against the French tax corresponding to that income, subject to the treaty conditions. This is commonly described as a credit equal to the French tax, or as a form of exemption with progression. It can affect the rate applied to other French-taxable income without making the UK pension itself taxable a second time.

The wording of Article 24(3)(a) is precise:

« les revenus qui sont imposables ou ne sont imposables qu’au Royaume-Uni conformément aux dispositions de la présente Convention sont pris en compte pour le calcul de l’impôt français […] Dans ce cas, l’impôt du Royaume-Uni n’est pas déductible de ces revenus, mais le résident de France a droit […] à un crédit d’impôt imputable sur l’impôt français. »

The complete official provision appears in Article 24 of the published France–UK convention. The word crédit d’impôt means a tax credit. In this specific method, asking France simply to deduct UK tax from the pension can be the wrong request: the French computation may first include the gross income and then neutralise the French tax corresponding to it.

The 2026 official notice for form 2047 gives the practical route for a foreign pension that falls into the “credit equal to French tax” category. It says to declare the pension on form 2047, complete the relevant framework, and carry the amount to the pension line on form 2042 and to box 8TK. The current 2047-NOT notice for 2026 distinguishes public and private pensions, directs the taxpayer to lines 1AL to 1DL for the relevant foreign pensions and identifies box 8TK for the corresponding French-tax credit. Forms change, so check the notice for the tax year actually being filed and follow the online return’s current fields.

For an Article 19 Civil Service pension, the declaration should usually show four things clearly: the gross UK pension, that it is a foreign public pension, the treaty article that allocates the taxing right to the UK, and the Article 24 mechanism used in France. If you have several pensions, do not aggregate them into one unexplained figure. Put the State Pension, Civil Service pension, NHS pension and private pension into the categories supported by their documents. One category may be taxable only in France, another only in the UK and another taxable in the residence state under Article 18.

CGI Article 170 states:

« 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. »

That is the basis of CGI Article 170. Disclosure and treaty relief are separate questions. Reporting the pension does not concede that France has the final taxing right; failing to report it can make the later treaty claim harder and can generate an unexplained discrepancy between HMRC information and the French return.

Prepare an evidence pack before filing or correcting the return:

• the annual Civil Service pension statement and any scheme booklet identifying the original employer;
• payslips or payment schedules showing the gross amount and UK tax withheld;
• HMRC correspondence, tax computations and proof of the UK tax treatment for the same year;
• proof of French residence and, where relevant, a treaty residence certificate;
• nationality documents if the Article 19(2) exception could be argued;
• separate calculations for State Pension, NHS, private and public-service payments;
• the French return, form 2047, form 2042 and the assessment notice; and
• a short table matching each pension component to Article 18, Article 19 or another treaty provision.

Article 30(2) of the convention expressly allows the tax authority to request a declaration, a residence certificate and supporting evidence. The French text states that a person claiming treaty benefits must provide:

« a) une déclaration, sous la forme requise par l’administration fiscale, donnant toutes indications sur les revenus ou les gains en capital […] ; b) une attestation de l’administration fiscale de l’autre Etat contractant confirmant que le requérant est ou était […] un résident de cet autre Etat aux fins de la présente Convention ; et c) toute autre pièce justificative […] »

See Article 30(2) of the France–UK convention. A UK certificate may prove UK treaty residence, but it does not by itself prove that a particular pension is a Civil Service pension. Scheme evidence and the public-service link remain necessary.

CGI Article 158 provides the domestic calculation rules for pensions and the standard pension allowance. Its current text says that pensions and retirement payments are determined under Articles 79 to 90 and that pensions and retirement payments receive a 10% allowance subject to a statutory ceiling. The relevant provision is CGI Article 158. The allowance is a French calculation issue; it does not decide whether Article 19 assigns the taxing right to the UK. Apply the allowance only in the way permitted by the current return and treaty calculation.

Social charges need a separate check. The 2047 notice explains that foreign replacement income can be subject to CSG, CRDS and, where applicable, CASA when the taxpayer is French tax-resident, covered by a compulsory French health-insurance scheme and no international convention excludes the charge. CSG is the French general social contribution; CRDS is the contribution for the repayment of social debt; CASA is an additional contribution for autonomy. A UK S1 healthcare registration may be important for health cover, but it should not be treated automatically as a complete income-tax exemption. Ask for the legal basis of any social charge separately from the income-tax treatment.

The Conseil d’État considered the France–UK treaty credit in decision no. 435907 of 12 February 2020. It held that the relevant UK income had to be included in the UK tax base, without requiring effective tax payment. The precise passage returned by the official decision record states:

« En revanche, cette condition n’exige pas que les revenus en cause aient été soumis à une imposition effective. »

This does not mean that every pension automatically receives a French credit. It means that the evidence and the treaty condition must be analysed correctly. A UK exemption, a nil assessment, a tax-free allowance or a pension component excluded from the UK tax base can change the result. The decision is a reason to document the UK legal treatment carefully, not a reason to omit the pension from France.

B. How do I contest French tax, claim repayment and start the mutual agreement procedure?

When a French tax notice charges income tax on the full Civil Service pension without the Article 24 treatment, act before the domestic deadline. The first step is usually a written réclamation contentieuse, meaning a formal claim to the French tax administration asking for correction of the assessment. Use the secure messaging facility in the French tax account where possible, identify the tax year and notice, explain the Article 19 classification and attach the evidence pack. Keep the submission, attachments, acknowledgement and date of filing.

The procedural deadline is not the same as the treaty deadline. Article R*196-1 of the French Tax Procedures Book provides:

« Pour être recevables, les réclamations relatives aux impôts autres que les impôts directs locaux et les taxes annexes à ces impôts, doivent être présentées à l’administration au plus tard le 31 décembre de la deuxième année suivant celle […] de la mise en recouvrement du rôle ou de la notification d’un avis de mise en recouvrement. »

The full official text is Article R*196-1 of the Livre des procédures fiscales. The correct end date depends on the type of tax and the event that starts the period. Check the assessment notice and obtain a dated calculation rather than relying on a general internet deadline. If a withholding error or a particular payment event is involved, the applicable paragraph may differ.

Do not wait for a mutual agreement procedure before protecting the domestic claim. Article 26 of the treaty says that a resident can submit a case to the competent authority when measures taken by one or both states produce taxation that does not conform to the convention, independently of domestic remedies. It adds that the case must be submitted within three years of the first notification of the measure, or within six years after the end of the fiscal year or assessment period concerned.

The official French text is direct:

« Lorsqu’un résident d’un Etat contractant estime que les mesures prises par un Etat contractant ou par les deux Etats contractants entraînent ou entraîneront pour lui une imposition non conforme aux dispositions de la présente Convention, il peut, indépendamment des recours prévus par le droit interne de ces Etats, soumettre son cas à l’autorité compétente […] »

Read Article 26 of the published convention in full before preparing the request. The French procedure is a procédure amiable, meaning a mutual agreement procedure (MAP) between the competent authorities. It is not an ordinary appeal to a French court and it does not automatically suspend collection of the disputed tax.

A sound domestic claim should ask the tax office to do the arithmetic, not only to recognise the treaty in theory. Show:

• the gross pension in sterling and the euro conversion used for the relevant tax year;
• the amount already taxed or assessed in the UK, with the relevant UK basis;
• the French amount currently charged on the pension;
• the Article 19 paragraph relied on and why the payer and service history satisfy it;
• the Article 24 paragraph and the French return boxes used or omitted;
• the amount of French tax that should be neutralised or recalculated;
• the effect on other French income if the credit equal to French tax applies; and
• any request for repayment, correction of withholding, or adjustment of social charges separately.

Where the administration says that the pension is taxable in France because it is a pension, answer the source-and-treaty point. In CAA Paris decision no. 22PA00815 of 1 March 2023, the court dealt with a French public retirement pension and recorded that it was paid by a public-law person and was taxable in France under the treaty rule applicable to that case. The decision is not a UK Civil Service ruling and should not be transplanted mechanically. Its evidential lesson is useful: the public payer, the fund and the service history are central. The court’s legal statement included:

« Il résulte de l’instruction que M. A… était fonctionnaire territorial français et percevait à ce titre une pension de retraite publique versée par la caisse nationale de retraite des agents des collectivités locales (CNRACL) à raison des cotisations versées à cet organisme. »

A second illustration comes from CAA Paris decision no. 23PA02576 of 11 April 2025, a France–UK treaty case about employment income rather than a pension. The court rejected the claim because the evidence showed that the activity was actually carried on in France. Its factual passage reads:

« Il résulte de l’instruction que, même lorsqu’il séjournait à Londres, M. B… était quotidiennement en contact avec les équipes de la SA A…, situées à Paris, qui le tenaient en permanence informé et qu’il dirigeait à distance. »

This decision is not authority that a Civil Service pension is taxable in France. It demonstrates why a treaty file must prove the facts behind the legal label. For a pension, that means proving the public employer, the scheme, the service rendered and the actual allocation of each component. It also warns against arguing from a UK address, a UK bank account or the place where documents were signed.

If the French tax office rejects the claim, examine the reply and the stated reason. A refusal that says only “the pension is foreign” does not answer Article 19. A refusal that accepts Article 19 but omits Article 24 may require a calculation-focused follow-up. A refusal based on nationality requires identity documents and a clear chronology. A refusal based on the scheme requires a letter from the pension administrator or the relevant UK authority.

Consider asking for sursis de paiement, meaning a request to defer payment of the disputed amount, where the conditions are met and collection would cause immediate harm. This is not automatic and does not remove the need to lodge the formal claim. Keep the undisputed portion separate, continue paying amounts that are clearly due and obtain written advice before stopping any direct debit or tax payment.

The MAP request should be framed as a treaty case, not as a general complaint about French tax. Identify the first notification, the tax years, the pension administrator, Article 19, Article 24 and the domestic steps already taken. Attach the French notices, the French claim and response, the UK tax documents, proof of residence and nationality, and a schedule of calculations. Explain the result sought: recognition that the qualifying Civil Service pension is taxable only in the UK under Article 19(2), followed by the Article 24 treatment in France for the calculation and credit.

MAP and domestic litigation can interact. A French court may decide the domestic assessment, while the competent authorities address treaty coordination. Filing a MAP request is not a reason to abandon a French administrative claim or a court deadline. Conversely, a court judgment can affect the issues that remain available for an agreement between the authorities. The file should show every deadline and every authority contacted.

Finally, keep future years consistent. If the classification is correct, use the same treaty explanation, pension separation and evidence table each year, updating only the amounts, exchange rate, tax paid and any scheme change. If HMRC changes the tax code, the pension administrator changes, a survivor’s benefit starts or French residence changes, reopen the analysis. A prior French notice is evidence of what happened, not a permanent ruling that controls every later component.

Conclusion

A UK Civil Service pension is not treated like every other UK pension in France. Article 19 of the France–UK convention can allocate the taxing right to the UK when the payment is made for qualifying government service. Article 18 ordinarily governs other pensions, including many private pensions and the State Pension. The public payer, the service history, the pension components, residence and nationality must all be checked.

Even where France cannot finally tax the Civil Service pension as ordinary income, the amount may still have to appear in the French return and be processed under Article 24. The safe course is to declare the correct gross figure through the current form 2047 and form 2042 instructions, preserve the UK and French evidence, and show the treaty calculation. If a French assessment charges the same pension twice, lodge the domestic claim within time and consider Article 26’s mutual agreement procedure without sacrificing either deadline.

For a pensioner facing a tax notice, an unclear scheme statement or a refusal to apply the treaty, the key issue is not the word “pension” on the notice. It is the legal source of the payment and the evidence proving how the treaty applies to that payment.

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