Since 1 January 2021, British citizens have been third-country nationals in the European Union. For the tens of thousands of Britons who own a second home in France, or who divide the year between the two countries, one rule now shapes every journey: no more than 90 days in any 180-day period across the whole Schengen area without a visa or residence permit. Two new European border systems make that rule harder to bend than ever. The Entry/Exit System, whose progressive deployment began in October 2025, records biometric data and every entry, exit and refusal. The European Travel Information and Authorisation System will soon require most visa-exempt travellers, including Britons, to hold a pre-travel authorisation. Overstaying is no longer a stamp a busy officer might miss. It is a computer record that can trigger a refusal of entry, an obligation to leave France and a ban on returning. This article explains how the 90/180-day calculation really works, what EES and ETIAS change for British travellers, which French long-stay routes exist when 90 days are not enough, and how to challenge a refusal of entry or a removal order before the French courts.

I. How long can a British citizen stay in France without a French residence permit after Brexit

British travellers often assume that owning a house in France, paying French property tax or spending decades holidaying in the same village gives them a right to stay. It does not. Since the end of the Brexit transition period, the only question that matters at the French border is the one the Border Guard puts to every third-country national: on what basis are you entering, and for how long. The answer sits in a combination of the Schengen Borders Code, the French Code de l’entrée et du séjour des étrangers et du droit d’asile (the CESEDA, the French code governing entry, stay and asylum) and the British government’s own travel advice, which mirrors the French position.

A. Counting your 90 days in any 180-day period across the whole Schengen area

The starting point is simple, and the British government states it in plain terms on its France entry requirements page: British travellers can stay visa-free for up to 90 days in any 180-day period. That sentence covers tourist trips, visits to family or friends, business meetings, cultural or sporting events and short-term study. It is the visa-free short stay, and it is the only route most British second-home owners use.

Three features of the rule catch travellers out. First, the 180-day window rolls. It is not a calendar semester. Every single day you spend inside the Schengen area, you must look backwards over the previous 180 days and count your days of presence. If the total reaches 90, you must leave. A week in Spain at Easter, a fortnight in Italy in June and two months in the Dordogne over summer all draw on the same pot, because the limit applies to the Schengen area as a whole, not to France alone. The gov.uk guidance warns expressly: Visits to Schengen countries in the 180 days before you travel count towards your 90 days.

Second, days count once started. The day you arrive and the day you leave each count as a full day of presence, even for a brief crossing. Travellers who nip across the Swiss border for lunch, or who route home through Amsterdam, sometimes discover that each movement consumed Schengen days they had earmarked for later. Keep every boarding pass, ferry ticket and booking confirmation until you are safely outside the area, because if the computer record is wrong, the paper trail is your correction.

Third, some days do not count at all. Time spent in France under a French residence permit or long-stay visa is outside the short-stay calculation. Again gov.uk confirms the principle: If you are in France with a residence permit or long-stay visa, that stay does not count towards your 90-day visa-free limit for the Schengen area. The same logic protects holders of a Withdrawal Agreement residence document, the WARP card (the carte de séjour created for Britons already resident before 2021): presence in the issuing state under that card is lawful residence, not a visa-free visit. But the exemption only works if you can prove it at the border, which means carrying the physical card and, for recent permits, checking that its expiry date has not passed unnoticed.

French domestic law frames the same boundary from the other side. Article L312-1 of the CESEDA provides that “Tout étranger souhaitant entrer en France en vue d’y séjourner pour une durée n’excédant pas trois mois” must apply for a short-stay visa under the Schengen rules (CESEDA, art. L312-1, in force on 3 October 2026). In practice Britons are visa-exempt for the short stay, so no consulate visit is needed, but the reference to Article 6 of Regulation 2016/399 matters: that is the Schengen Borders Code provision listing the five entry conditions every third-country national must satisfy, including a valid travel document, justification of the purpose of stay, sufficient means of subsistence and no alert in the Schengen Information System. Meeting the 90-day arithmetic is necessary but not sufficient. At French border control, gov.uk notes that at French border control travellers may be asked to show proof of travel insurance covering emergency costs, proof of sufficient money for the stay, proof of accommodation and a return or onward ticket. A British passport gets you to the booth. It does not get you through it automatically.

Passport validity itself has become a refusal ground of its own since Brexit. France applies the Schengen rule strictly: your passport must have a date of issue less than ten years before arrival, and an expiry date at least three months after your planned departure from the Schengen area. The old British practice of carrying up to nine months of unexpired validity into a renewed passport means some passports show more than ten years from issue to expiry. Those documents are invalid for Schengen entry even though they remain valid for the rest of the world. Check both dates before every trip, not just the expiry date.

When 90 days are structurally insufficient, because you live in France half the year or you are retiring to your French house, the lawful answer is a long-stay visa followed by a residence permit, applied for before you travel. Article L411-1 of the CESEDA states the principle without ambiguity: “tout étranger âgé de plus de dix-huit ans qui souhaite séjourner en France pour une durée supérieure à trois mois doit être titulaire de l’un des documents de séjour suivants” (CESEDA, art. L411-1, in force on 3 October 2026), and the list that follows opens with the long-stay visa. The next article tightens the sequence: “la première délivrance d’une carte de séjour temporaire ou d’une carte de séjour pluriannuelle est subordonnée à la production par l’étranger du visa de long séjour” (CESEDA, art. L412-1, in force on 3 October 2026). You cannot arrive visa-free and convert yourself into a resident at the prefecture. For retired Britons the standard route is the long-stay visitor visa, the visa de long séjour visiteur, which requires proof of stable and sufficient resources, comprehensive private health insurance for the first year and a signed undertaking not to work in France. It is applied for at the French consulate in London through France-Visas, then validated online after arrival so that it acts as a one-year residence permit, renewable at the prefecture. Start the application at least three months before the intended move, because consular appointments, translated bank statements and insurance certificates take longer than anyone expects, and a refusal for incomplete means must be cured from the United Kingdom, not from the Dordogne.

B. Fingerprints at the border and authorisation before you fly: what EES and ETIAS change

Until recently, enforcement of the 90-day rule depended heavily on passport stamps, and stamps get missed, smudged or misread. That era is ending. The Entry/Exit System, created by Regulation 2017/2226, replaces stamping for short-stay third-country nationals with a central European database holding biographical data, fingerprints, a facial image and a complete log of entries, exits and refusals of entry. The French administration explains on its dedicated EES information page that Travellers who have not crossed an external Schengen border since EES went live on 12 October 2025 undergo first-time enrolment on arrival in France. Every British visa-free visit to France now feeds that file, including at the juxtaposed controls at St Pancras, Folkestone and Dover, where French border police operate on British soil.

For British travellers the practical consequences are threefold. First, the border crossing takes longer, especially the first time your biometrics are enrolled. Build the extra hour into connections at Gare du Nord and into school-holiday ferry bookings. Second, the 90-day count becomes automatic and shared. An overstay recorded at a Greek airport is visible to the officer who meets you at Lyon. Excuses based on a missing stamp no longer work, in either direction: if the system shows no exit record for your last trip, you may be treated as an overstayer on your next arrival and questioned accordingly, which is why keeping your own exit evidence matters more than ever. Third, EES data feeds refusal and removal decisions. An officer who sees a previous overstay or refusal in the file has a documented basis for a fresh refusal of entry, and the prefecture that later examines an OQTF file, the obligation de quitter le territoire français, the formal order to leave French territory, will rely on the same log.

The second new system, ETIAS, the European Travel Information and Authorisation System created by Regulation 2018/1240, adds a pre-travel layer. Once fully operational, nationals of visa-exempt countries, expressly including the United Kingdom, must obtain an electronic travel authorisation before boarding, similar in concept to the American ESTA. The authorisation involves an online form, a small fee, automated security screening and, for most applicants, approval within minutes or hours, valid for three years or until the passport expires. It is not a visa and it does not guarantee entry, but travelling without it once the obligation applies means being denied boarding by the carrier. One exemption matters enormously to long-settled Britons, published on the European Union ETIAS information site: UK nationals and family members who are beneficiaries of the Withdrawal Agreement and hold a Withdrawal Agreement residence document in the uniform format are exempt from ETIAS authorisation. If you hold a WARP card, keep it valid and carry it; it is your ETIAS substitute. If you arrived after 2020 and live in France under an ordinary carte de séjour, you remain subject to ETIAS for travel to other Schengen states but your French residence right itself is untouched. Readers who also hold an Irish or French passport are outside ETIAS entirely when travelling on that European document, which is one more reason to sort out dual nationality paperwork before booking.

Neither system changes the substantive right to 90 visa-free days. What they change is proof and memory. The border now remembers everything, so the traveller must too: a simple spreadsheet of entries and exits, a folder of tickets and a printed ETIAS approval alongside the passport turn a stressful questioning into a two-minute check. Families should diarise each member separately, because children with their own passports accumulate their own records, and a teenager’s school exchange in Germany consumes the same family pot of Schengen days as the parents’ winter in Provence.

II. What happens when France says you overstayed, and how to challenge the decision

An overstay finding can surface at three moments: at the border on arrival, when entry is refused; during a document check inside France, when the prefecture orders you to leave; or months later, when a residence application or a fresh visa request is examined and the computer shows an unexplained excess. Each route has its own decision, its own judge and its own deadline, and confusing them is the most common way of losing a winnable case. The Court of Appeal of Paris made exactly this point in an April 2025 ruling on border detention, rejecting counsel’s attempt to import arguments about an old removal order into a refusal-of-entry case: the court held that counsel had “entretient une confusion entre les contentieux”, mixing the removal dispute, already decided, with the entry-refusal dispute then before the court (CA Paris, 2 April 2025, RG 25/01755). Removal litigation and entry-refusal litigation are separate disputes. Identify which one you are in before writing a single line of challenge.

A. Refusal of entry at the border, the OQTF order and the ban on returning

At the border, an officer who considers that you do not satisfy the entry conditions issues a written, reasoned refusal of entry, the refus d’entrée. The Paris court recalls the framework: “Ce refus d’entrée résulte d’une décision écrite et motivée prise par le chef du service de la police chargé du contrôle aux frontières. La contestation de cette décision ressort de la compétence du juge administratif.” (CA Paris, 2 April 2025, RG 25/01755) If return travel can be arranged at once, you are put back on the departing carrier, unless you ask for a full day to consider your position, the jour franc protection in Article L333-2. Otherwise you are held in a waiting zone, the zone d’attente, while the administration organises return. That detention is supervised by the ordinary courts: the measure “peut être autorisé, par le magistrat du siège du tribunal judiciaire statuant sur l’exercice effectif des droits reconnus à l’étranger, pour une durée qui ne peut être supérieure à huit jours” (CA Paris, 2 April 2025, RG 25/01755). Ask for the interpreter, the telephone call, the doctor and the lawyer from the first hour, because the liberty judge reviews whether your rights were effective, not whether the border police were polite.

Inside France, the central instrument is the OQTF, the obligation de quitter le territoire français. Article L611-1 of the CESEDA lists six situations, and overstayers fall squarely within the second paragraph, which targets the foreigner who, “n’étant pas soumis à l’obligation du visa, entré en France plus de trois mois auparavant”, remained without a residence document (CESEDA, art. L611-1, in force on 3 October 2026). Visa-exempt Britons who stay on past their lawful short stay are the textbook case of that paragraph. The same article covers neighbouring situations: entry without proof of lawful arrival, refusal or withdrawal of a residence permit, and presence constituting a threat to public order.

The OQTF normally comes with a voluntary departure period: the foreigner under such an order “dispose d’un délai de départ volontaire de trente jours à compter de la notification de cette décision” (CESEDA, art. L612-1, in force on 3 October 2026). During those thirty days you are expected to organise departure yourself, and the administration may extend the period for personal circumstances. But the prefect can withhold any voluntary period at all: “l’autorité administrative peut refuser d’accorder un délai de départ volontaire” in defined cases (CESEDA, art. L612-2, in force on 3 October 2026), including threats to public order, manifestly unfounded or fraudulent residence applications and a risk of evading removal. An OQTF without voluntary departure is enforceable much faster and is frequently paired with house arrest, the assignation à résidence, while removal is arranged. A separate decision often travels with the OQTF: the interdiction de retour sur le territoire français, the IRTF, the ban on returning to France, which can block lawful re-entry for a fixed period even with a fresh passport. Treat every envelope from the prefecture as urgent. Deadlines run from notification, and some run in days, not months.

The British government warning on its France travel advice page understates nothing: If you overstay the 90-day visa-free limit, you may be banned from entering Schengen countries for up to 3 years. That Schengen-wide dimension is what turns a pleasant winter too long in the Var into a problem for the whole family’s European travel. A French return ban is entered in the Schengen Information System and is visible to German, Dutch and Spanish border officers. Conversely, an entry ban issued by another Schengen state can produce a French refusal of entry at your next arrival. Think of the overstay as a European record, not a French misunderstanding.

Second-home ownership changes none of this analysis. French courts have never treated property ownership as a residence right, and prefectures routinely point out that the applicant can manage the house from abroad, let it lawfully within planning and tax rules, or sell it. Arguments that do carry weight concern personal and family ties in France, the best interests of children in French schools, serious medical treatment that cannot be interrupted, and documented attempts to regularise stay through the proper consular route. Gather that evidence before the prefect decides, because the OQTF must show that the administration examined your personal situation. A file with school certificates, medical attestations, tax notices, proof of health cover and the consulate appointment for a long-stay visa reads very differently from a file with only an overstay computation.

B. Challenging the order before the administrative court and rebuilding a lawful stay

Every OQTF states the court and the deadline on its final page. Read that page first and calendar it the same day. The statute provides that removal orders and their attached stay, departure-time and return-ban decisions “peuvent être contestées devant le tribunal administratif” (CESEDA, art. L614-1, in force on 3 October 2026). In practice the deadlines are brutally short: fifteen days from notification for many OQTFs with a voluntary departure period, and as little as forty-eight hours for OQTFs without departure time or notified at the border, with correspondingly fast judgments. The Administrative Court of Appeal of Paris illustrates the timetable discipline in a 2025 overstay judgment, recalling that “Le tribunal administratif statue dans un délai de trois mois à compter de sa saisine” for the ordinary thirty-day route (CAA Paris, 3 July 2025, No. 24PA01174). File late and the court will not reach the merits. File in time and the standard OQTF with a departure period is suspensive in effect while the judge decides, which is precisely why the deadline matters more than the eloquence of the pleading.

The same Paris judgment is a useful lesson in where overstay challenges are actually won and lost. The applicant attacked the OQTF for defective reasoning, error of law, failure to examine his personal situation and manifest error of assessment, and attacked the country-of-destination decision as a knock-on illegality. The court’s pivotal holding was procedural: the first judge had swapped the legal basis of the removal order from one sub-paragraph of Article L611-1 to another without sending the case to the full collegial bench, because challenges on that footing fall within “la compétence exclusive de la formation collégiale du tribunal” (CAA Paris, 3 July 2025, No. 24PA01174). The first judgment was therefore irregular. The lesson for British overstayers is not to memorise bench-composition rules but to plead procedure alongside substance: defective statement of reasons, wrong legal basis for the OQTF, absence of a genuine examination of personal circumstances, and disproportionality. Prefectures handling high volumes sometimes notify an OQTF grounded on expired-visa wording for a visa-exempt Briton, or on no-residence-document wording without addressing a pending long-stay application. Those mismatches are challengeable, and a Lyon line of cases shows courts annulling OQTFs paired with house arrest and return bans where the file cannot sustain them (CAA Lyon, 15 November 2023, No. 22LY03032).

Interim relief exists but must be requested correctly. Against an OQTF with a thirty-day departure period, the timely annulment action itself normally holds removal while the court decides. Against an OQTF without departure time, or a refusal of entry with placement in a waiting zone, ask the administrative judge for interim suspension, the référé-suspension, within the forty-eight-hour window, and ask the liberty judge separately to end waiting-zone detention if rights were breached. Always challenge each attached decision expressly: the refusal of stay, the OQTF itself, the refusal of a voluntary departure period, the country of destination and the return ban each need their own conclusions, because a judge who annuls the OQTF but leaves the return ban standing has left the travel ban in place.

If you are already beyond your 90 days when you read this, gov.uk gives the single most useful instruction: If you cannot return to the UK before your visa-free limit expires, contact the nearest local prefecture in France. In Paris that means the prefecture de police; elsewhere, the prefecture of your department. Attend with your passport, proof of entry date, evidence of the reason you cannot travel, proof of resources, health cover and accommodation, and ask in writing for either a short extension of admission or guidance on the applicable residence route. Keep a copy of everything stamped. Then leave as soon as you lawfully can if no extension is granted, because voluntary departure within the thirty-day period avoids forced enforcement and weakens any later return ban.

Rebuilding afterwards means returning to the consular route with a clean file. Apply from the United Kingdom for the correct long-stay visa, visitor for retirement or family life, passeport talent or salaried routes for workers, student for study, disclosing the overstay honestly rather than hoping the EES log will be overlooked. Consuls see the same system the border sees. A candid explanation with evidence of the one-off cause, medical emergency, cancelled ferry, bereavement, plus proof that departure eventually complied with the OQTF, fares far better than silence discovered at the counter. Once the long-stay visa is issued and validated, the 90-day arithmetic ceases to govern your French life, though it continues to cap your tourist travel in other Schengen states beyond the Franco-British shuttling, within the limits the visa itself sets.

Readers who divide each year between Britain and France and hold a Withdrawal Agreement card will recognise the same reflexes discussed in our earlier guide to renewing the Withdrawal Agreement residence card and challenging a refusal or removal order: calendar every deadline from notification, keep every ticket and stamp, challenge each attached decision separately and never confuse entry-refusal litigation with removal litigation. The border computer now does the counting. The traveller’s job is to give the judge something lawful to count.

Conclusion

The 90/180-day rule is no longer a stamps-and-luck arrangement. It is a rolling arithmetic enforced by a European database that logs every British entry, exit and refusal, soon paired with a pre-travel authorisation that carriers will check before boarding. Most British visits fit comfortably within 90 days, provided the whole Schengen itinerary is counted and passports satisfy the ten-year issue and three-month expiry conditions. Longer French lives need a long-stay visa obtained from the consulate before travel, then a residence permit from the prefecture, because French law requires a documented stay beyond three months and forbids inventing residence from inside a visa-free visit. An overstay finding brings a written refusal or an OQTF with, usually, thirty days to depart voluntarily, sometimes no departure time at all, and potentially a ban on returning that other Schengen states can see. Each of those decisions can be challenged before the administrative judge, but only within days, only with separate conclusions against each attached measure, and only on grounds the file supports. Count your days before the computer does, carry the evidence of every crossing, and when the arithmetic no longer fits your life in France, switch early to the long-stay route rather than stretching the short stay until it breaks.