What Brexit actually changed for French VAT
On 1 January 2021, the United Kingdom left the European Union VAT area and, for a few weeks, French tax lawyers told clients to appoint a representative. Within months, the Direction Générale des Finances Publiques issued a note clarifying that the United Kingdom was a country with sufficient mutual assistance for VAT recovery, which is the test that switches off the Article 289 A CGI representative requirement. The base agreement relied on is the cooperation and recovery assistance framework that survived the Withdrawal Agreement. The practical consequence for a UK-established business is that, in most cases, it registers for French VAT directly, signs its own French returns, and carries its own joint liability. No representative. No guarantee deposit. No monthly markup on a filing fee.
Three carve-outs that still catch UK companies
Three narrow situations still require a VAT representative even for a UK company. First, when the UK entity is a branch of a non-EU parent and the French authority considers that the UK branch has no autonomous legal existence separate from that parent; in that case the parent jurisdiction is the relevant one, and if the parent sits in a country without mutual assistance, a representative is required. Second, when the UK entity is in fact a letterbox structure without genuine UK substance; the French tax office has quietly started reclassifying these, and the representative requirement follows. Third, when the operation involves a specific regime where French rules impose a representative regardless of reciprocity, for instance certain distance-selling arrangements or tax-warehouse flows; these are niche but real.
Registering directly with the French tax office
Direct registration for a UK company is handled by the Service des Impôts des Entreprises Étrangères (SIEE) in Noisy-le-Grand, the dedicated office for non-resident businesses. The dossier asks for the UK Certificate of Good Standing, the UK VAT registration certificate, a French translation of the statutes, a brief description of the French operations, and bank details for refunds. The turnaround is typically four to six weeks; the French VAT number arrives as an individual SIRET plus a standard FR prefix. The SIEE then becomes the direct point of contact. A UK company that expects to run monthly returns should budget for a dedicated bilingual accountant, either in-house or through a UK firm with a French desk, rather than assume the returns can be filed alongside the HMRC VAT3 cycle as an afterthought.
Choosing to appoint a representative anyway
Some UK companies appoint a French representative even though they are not required to. This is a legitimate commercial choice and the legal effect is different from the mandatory regime: the appointment is a tax agent mandate, a mandataire, without joint liability by default. The agent files on the company behalf, the company signs, and the liability stays with the UK entity. Fees are typically lower than the mandatory regime, because the risk profile is lower, and the onboarding is lighter. Groups that carry French operations inside a wider European footprint often prefer this setup, because it keeps a single point of contact across jurisdictions without the French Treasury reaching the agent personally.
Worked example
A Manchester-based B2B software reseller signs a €1.8 million annual contract with a French customer in 2026, delivering digital licences and on-site training. Because the customer is a business, the main flow runs on the reverse charge and no French output VAT is due on the licences. The on-site training, invoiced from the UK to the French customer, follows the general B2B rule and is also reverse-charged. Net French VAT position: zero or nearly so, no obligation to register. The Manchester firm signs nothing, files nothing in France, and the mutual-assistance reciprocity becomes irrelevant. Now change the facts: the same company opens a French warehouse to ship B2C licence keys on USB sticks. Goods shipped from France to French consumers generate French output VAT, the company must register directly with the SIEE, and it files monthly. Still no representative required. Finally, add that the Manchester firm is a UK branch of a Delaware parent; the branch has three staff and no independent balance sheet. In that case, the French tax office may look through to Delaware, and a representative is required after all.
Pitfall to avoid
The most frequent pitfall is assuming Brexit ended direct registration for UK companies. It did not. A UK VAT team that inherited the 2020 playbook from a continental group sometimes still appoints a representative by reflex and pays a monthly fee it does not owe. The fix is a five-minute call with the SIEE quoting the DGFiP note on UK reciprocity. On the other side of the same pitfall, do not assume direct registration means the French filing is easy: the French monthly return format and due date are not the HMRC quarterly rhythm, and missing one month has immediate consequences.
Pro tip
If you sit on the edge of the carve-outs, for instance a UK branch of a US parent, ask the French tax office for a written ruling, a rescrit, before you start trading. The rescrit process is free, the answer binds the French tax office, and having the paper in the file is worth far more than a legal opinion. The process takes two to three months, which is time you can use to prepare the ledger either way. A rescrit on the reciprocity carve-out for your specific structure is, in my experience, the single most useful document a non-EU-linked UK company can hold in its French VAT file.
Key takeaways
- UK reciprocity with France switches off Article 289 A CGI for most UK-established businesses.
- Three carve-outs remain: branch of a non-EU parent, letterbox UK entity, specific regimes like tax warehousing.
- Direct registration runs through the SIEE in Noisy-le-Grand; turnaround four to six weeks.
- Voluntary appointment of a representative is a mandataire without joint liability by default.
- When in doubt, file a rescrit with the French tax office; the written ruling binds them.
Frequently asked questions
Did Brexit force UK companies to appoint a French VAT fiscal representative?
Briefly, yes, during the transition grey zone in early 2021, and then no. France formally recognised the United Kingdom as a country with sufficient mutual assistance for VAT recovery, and the Direction Générale des Finances Publiques confirmed this in a note that switched off the representative requirement for most UK-established businesses.
Can a UK company still voluntarily appoint a representative?
Yes. Appointing a representative is optional for a UK company and some choose to, typically groups that prefer to outsource the filings, or smaller firms that do not want their in-house team to learn the French monthly return. The legal difference is that joint liability is not imposed: the representative becomes an ordinary tax agent, a mandataire, when appointed voluntarily.
What about Northern Ireland goods flows under the Windsor Framework?
The Windsor Framework keeps Northern Ireland inside the EU VAT zone for goods, not for services. A Northern Irish entity handling intra-EU goods movements is treated as EU for that flow and as UK for services. If the French activity is purely a service flow, the UK reciprocity regime applies; if the goods flow runs through Belfast, the EU rules apply instead.
Does the reciprocity exception cover Crown Dependencies like Jersey or the Isle of Man?
No. Jersey, Guernsey and the Isle of Man are not part of the United Kingdom for tax-treaty purposes and are treated as third countries without the relevant agreement. A company established in one of those jurisdictions and trading into France will normally need a French VAT fiscal representative.