Quick answer
Keep the registration, move the mandate and the records. A French VAT number is built on the company's SIREN, so a change of provider does not by itself change it. What changes is who holds the mandate or the accredited representation, who files which period and who holds the evidence. The worksheet below tracks each record by period, outgoing owner, incoming owner, evidence received, open issue and agreed first filing.
What a French VAT provider handover actually transfers
A French VAT registration belongs to the foreign company. The number is FR, a two-digit key and the company's SIREN, as the identifier guide explains, which is why a change of adviser does not by itself create a new number. If the legal entity and the taxable activity stay the same and the registration is still open, the number normally continues. What moves is the authority to act: the mandate given to a filing agent, or the accredited fiscal representation for a business that must have one.
Two situations are registration questions rather than handover questions and belong in the registration guide: a different legal entity is now selling into France, or the tax office has closed the registration. Check the current position on the professional tax account before anyone promises continuity.
The table below sets out the three setups a foreign company can be in and what physically changes hands in each. The fiscal representative is required for companies established outside the EU and outside the countries listed by the order of 15 May 2013; the exempt-countries guide covers that list, so this article does not repeat it.
| Setup | Who is liable for the VAT | What moves at handover |
|---|---|---|
| Accredited fiscal representative | The representative, for the whole period of its designation. BOFiP states that it answers for the represented business's VAT obligations during that period, including operations it did not know about (BOI-TVA-DECLA-20-30-40-10, paragraph 210). | The designation itself. A non-established business can appoint only one fiscal representative for all its French operations (paragraph 70), so the outgoing designation must end and the new one start without overlap or gap. |
| Mandataire, or filing agent | The company. The mandataire acts under the responsibility of the principal, which remains the sole person liable for the tax (BOI-TVA-DECLA-20-30-40-20, paragraph 200). | The mandate. A new mandate applies from acceptance by both parties, the previous one lapses and only the new mandataire may act. The SIEE must be told by e-mail with a copy of the new mandate attached. |
| Direct filing with a new adviser | The company. | Access to the professional tax account, the EDI partner if one is used, and the working papers. No authority form changes hands, so the evidence handover is the whole job. |
Sources: DGFiP's registration routes page and its answer on appointing a new mandataire, and the two BOFiP chapters on fiscal representation and on the mandataire, all linked under official sources.
Inventory mandates and company identifiers before anything moves
Start with a list of everything that identifies the company in France and everything that lets someone act for it. Most handover disputes come from an item that nobody listed: an EDI partner still filing under the old instruction, a professional tax account created under a former employee's e-mail, or a mandate whose effective date nobody can find.
- SIREN, French VAT number and the SIEE letter that communicated them.
- The professional tax account: who created it, which e-mail address owns it and which services are activated.
- The current mandate or fiscal-representation designation, its effective date and the accreditation decision where one exists.
- The EDI partner or filing software used to transmit the CA3, and the bank account registered in the tax account for VAT payments.
- Adjacent registrations that share the same evidence: OSS, EORI, the preparation for e-reporting, and every marketplace tax setting that shows the French number.
- The filing calendar: regime (monthly, quarterly or seasonal), the deadline assigned in the tax account and the last period filed.
Reconcile the last filed period and separate filed from paid
The single most useful handover document is a period-by-period statement of what was filed, what was paid and what the tax office shows. Filed and paid are different facts. DGFiP explains that a rectifying return cancels and replaces the return for its period but does not cancel the payments already made, so a corrected period can leave a credit or a balance that only the tax account reveals.
For every period, collect the filed CA3 with its acknowledgement, the payment evidence and the tax account's view of that period. Where a credit was carried forward, follow it from line 27 of one return to line 22 of the next, as the CA3 guide describes line by line.
Balances are not corrections. A credit that the tax account confirms is a balance. A period where the outgoing provider knows the figures were wrong is a pending correction, and it needs its own row on the worksheet, its own owner and its own date.
| Fact | Evidence that proves it | Where it usually goes wrong |
|---|---|---|
| Filed | The CA3 as submitted and the acknowledgement from the tax account. | A nil period that was never filed, or a rectifying return that nobody recorded. |
| Paid | Bank evidence and the payment entry on the tax account. | A payment made against a return that was later replaced. |
| Balance | Line 27 of the last return and the tax account statement. | A credit shown on the return but not confirmed by the account. |
| Pending correction | The replacement data and a draft rectifying return. | An error everyone knows about that no one has been asked to file. |
The handover worksheet
Use one row per record and per period. The columns are deliberately operational: they force the two providers to name who holds each item, what evidence has actually changed hands and what remains open. The first row is a completed example. It is illustrative and not a client case; the dates follow the SIEE monthly calendar described in the CA3 guide.
| Record | Period | Outgoing owner | Incoming owner | Evidence received | Unresolved issue | Agreed first filing |
|---|---|---|---|---|---|---|
| Example row: CA3 return (illustrative, not a client case) | June 2026, monthly regime | Outgoing mandataire, filed 17 July 2026 | New mandataire from the July 2026 period | Filed CA3, acknowledgement and payment receipt received 4 August 2026 | Credit of EUR 1,240 carried forward on line 27, not yet checked against the tax account | July 2026 CA3, filed by the new mandataire by 19 August 2026 |
| CA3 return | Each period since registration, or at least the retention period | Provider that filed it | Provider that files the next period | Return, acknowledgement, workpapers | Missing periods, nil returns not filed | First period under the new authority |
| VAT payment | Each period with VAT due | Party that initiated it | Party that approves it from the first new period | Bank evidence, tax-account entry | Payment made against a replaced return | Payment path confirmed before the first due date |
| VAT credit or balance | Last filed period | Provider that reported it | Provider that carries it forward or claims it | Line 27 of the last return, tax-account statement | Credit not confirmed by the tax account | Carried forward on line 22, or refund requested on form 3519 |
| Pending correction | The corrected periods | Provider that identified the error | Agreed in writing: outgoing, incoming or scoped separately | Replacement data, draft rectifying return | Error known but not yet filed | Filing date of the rectifying return |
| Mandate or fiscal-representation designation | Effective dates of the old and new instruments | Outgoing provider | Incoming provider | Signed new mandate, notice to the SIEE, termination of the old one | Overlap or gap between the two dates | Filing under the new authority only after the SIEE has been notified |
| Authority correspondence | Open at handover | Provider that received it | Provider that answers it | Letters, secure-messaging threads, deadlines | A reply due during the transfer | Named owner and reply date for each open item |
Retention: the books, records and supporting documents that the tax office may examine must be kept for six years from the last entry or from the date they were drawn up (Livre des procédures fiscales, Article L102 B, version in force on the review date). Ask the outgoing provider for the complete files, not only the returns.
Allocate the transition period
The changeover period has one owner. For a mandataire, the answer follows the mandate: DGFiP states that the new mandate applies from acceptance by the parties, that the previous mandate lapses and that only the new mandataire may then act, and it asks to be informed as soon as possible by e-mail to the SIEE with the new mandate attached. Fix the acceptance date so that it falls between two filing deadlines, send that e-mail, and record which of the two providers files the return that straddles the change.
For an accredited fiscal representative the dates matter more, because liability follows the designation. BOFiP states that the representative answers for the represented business's VAT for the whole period during which its designation is valid; that a representative giving up the role must do so in writing to both the business and the tax office, with no effect before the office has been notified; and that the designation is made before the operations it covers, states its effective date and is in principle not retroactive.
In both cases, write the allocation down: the last period filed by the outgoing provider, the first period filed by the incoming one, and who handles anything that lands in between. The transfer service documents exactly these two periods before taking over.
Missing records or a deadline during the transfer
Missing records are common when the relationship with the outgoing provider has soured. Filed returns and the account position can be reconstructed from the professional tax account, and the invoices, ledgers and marketplace reports belong to the company, so rebuild from those rather than waiting for the provider. Ask for the complete files in writing all the same, and keep the request with the handover evidence.
A deadline that falls during the transfer is met on time by whoever holds the authority on that date, with the best data available. If the figures later prove wrong, a rectifying return for the same period cancels and replaces the initial return without cancelling the payments already made. When the correction reduces the VAT due, DGFiP's guidance is to recover the overpayment through a claim sent from the secure messaging of the professional tax account, not by paying less the next time.
Do not skip a period because the provider is changing. Monthly and quarterly businesses managed by the SIEE file a nil CA3 when there is nothing to declare, and a missing return is the first thing a new provider inherits.
A VAT credit or a VAT debt at the handover
A credit belongs to the company, not to the provider. It is either carried forward on the next return or claimed back. DGFiP states that a refund of a VAT credit is requested electronically on form 3519 from the professional tax account and that the electronic route applies to every business. Decide which of the two options applies before the first new return, and record on the worksheet who submits the claim and against which evidence.
A debt is a payment question first and a liability question second. Agree who pays what is already due, keep the payment evidence with the returns, and remember that under fiscal representation the representative designated for the period remains answerable for it. A debt that comes from an error is a correction, and correction work is scoped separately from the handover; where the tax office is already asking questions, the audit-support service takes that thread.
Agree the first filing and what the new engagement covers
The first filing under the new engagement is agreed in writing before any authority is transferred: the period, the deadline, who prepares, who approves and who pays. Everything before that period is handed over as complete, listed as a pending correction, or excluded.
Then define the scope of the engagement itself, because 'French VAT' can mean very different things. A filing engagement prepares and submits the CA3 from data the client approves. Fiscal representation adds the statutory role and its liability. Neither automatically covers e-reporting preparation, OSS returns, customs questions or the response to a tax audit; those are separate services with separate evidence.
| Question | Settle it as |
|---|---|
| Does the client approve every return before submission? | Yes by default. Name the approver and the cut-off before each deadline. |
| Who initiates and who approves payment? | The client approves. The provider initiates only under a written instruction. |
| Who answers the tax office? | The provider holding the mandate or designation, with the client copied on every exchange. |
| Are historic periods included? | No, unless a period is listed on the worksheet as a scoped correction. |
| Where does the evidence live after the transfer? | In one file the client controls: returns, acknowledgements, payments, mandates and correspondence. |
Five questions sellers ask before switching
The short answers below carry the caveats that matter. None of them replaces a check of the company's own tax account, because the account, not the provider, is the record the tax office works from.
| Question | Short answer | What to check |
|---|---|---|
| Can the VAT number stay the same? | Usually yes. The number is built on the company's SIREN and identifies the company, not the provider. | Same legal entity, registration still open on the tax account, same route with or without a representative. |
| What if the previous provider has missing records? | Rebuild from the professional tax account and from the company's own invoices, ledgers and marketplace reports. | Which periods are missing, and whether any of them were never filed at all. |
| Who files the changeover period? | Whoever holds the mandate or designation on the filing date, as agreed in writing. | Acceptance date of the new mandate, notice to the SIEE, no overlap or gap for a fiscal representative. |
| What if there is a VAT credit or debt? | A credit is carried forward or claimed on form 3519. A debt is paid and its origin documented. | Whether the tax account confirms the balance, and whether it stems from a correction. |
| What does the new engagement actually cover? | Only what is written: filing, representation or both, from the agreed first period. | Approval and payment rules, authority correspondence, and exclusions such as audits and historic periods. |
Escalation checklist
Five situations need a decision rather than a worksheet row. Each one has a next step that does not depend on the outgoing provider.
- The outgoing provider does not respond: send a written termination, keep proof of delivery, and notify the SIEE in the same message as the new mandate.
- The status of the number is unclear: run it through the VAT number checker, then confirm the registration on the professional tax account before filing.
- A letter from the tax office arrives mid-transfer: log its deadline on the worksheet and route it to audit support if it is a control.
- A period was never filed: treat it as a correction with its own scope, not as part of the handover.
- The company is established in the EU or in a listed country and still pays for a fiscal representative: check whether a mandataire is enough before renewing, using the exempt-countries guide.
Official sources
Last reviewed 26 September 2026. Rules and operational procedures can change, so confirm the current position for your exact products and sales flows.
- French tax authority: VAT registration routes for foreign companies
- French tax authority: how to appoint a new mandataire
- BOFiP: fiscal representative of a business not established in France (BOI-TVA-DECLA-20-30-40-10)
- BOFiP: businesses dispensed from a fiscal representative and the mandataire (BOI-TVA-DECLA-20-30-40-20)
- French tax authority: correcting a VAT return already filed
- French tax authority: requesting a VAT credit refund (form 3519)
- French tax authority: SIEE contact details
- Livre des procédures fiscales, Article L102 B: record retention
- Légifrance: General Tax Code Article 289 A, fiscal representation