Switching French CPA in 2026: full procedure & resignation letter

This guide is written for expats and foreign founders by a French CPA, an English-speaking accountant in Paris, with practical focus on accounting in France, French corporate tax, business setup in France and French payroll.

Pricing creep, rotating contacts, late filings, no advisory, errors discovered at year-end: switching your French chartered accountant is a right, not infidelity. It's a healthy and frequent decision — an estimated 8 to 12% of French business owners switch firms each year.

Yet many founders postpone the move out of fear of notice periods, file retention, or transition fees. This guide, written by Samuel HAYOT, an English-speaking French CPA in Paris 8th, gives you the exact procedure, deadlines, documents to recover, costs to anticipate and a ready-to-send letter template.

Practical tool: our free resignation letter generator produces your personalised letter in 2 minutes, ready to print and send by registered post.

Field observation: most founders wait 18-24 months too long. The hidden cost (poor advice, missed optimisations, delays) far exceeds transition fees.

Before any letter is sent, open your lettre de mission (engagement letter, mandatory under article 18 of decree n° 2007-1387). It states:

• Contract duration (usually annual, tacitly renewed)
• Notice period for termination — typically 1 to 3 months
• Anniversary date or termination window
• Handover modalities at end of mission
• Outstanding fees (pro rata or flat balance)

Implication: if the notice period is 3 months and you target a switch on 1 January, your letter must be sent by 30 September at the latest.

No engagement letter? You're in grey territory — a firm without a signed lettre de mission is itself in breach of professional ethics. You can terminate without notice and report it to the Ordre.

Never resign before signing with a new firm. A blank period exposes you to:

• Missed VAT returns (5-10% penalty + interest)
• Late DSN payroll filings (€50 per employee per month)
• Delayed year-end close (€1,500 fine + director's liability)

Points to confirm with the incoming firm#

• Capacity to take over the file at no cost (negotiate at quote stage)
• Take-over of at least 2 closed financial years for historical context
• Named, single point of contact
• Modern collaborative tool (Pennylane, Tiime, Cegid Loop)
• Pre-signature availability to validate the migration plan

See: How to choose your CPA in Paris in 2026 | How much does a French CPA cost

Mandatory content#

1. Company details: name, legal form, share capital, SIREN, RCS, registered office
2. Outgoing firm's details: name, address, attention of the signing CPA
3. Reference to date and number of the engagement letter
4. Subject: termination of the engagement letter
5. Effective date (e.g. 31 December 2026)
6. Notice period applied
7. Explicit handover request: FEC, balance, journals, software backups, vouchers, portal access
8. Date and signature of the legal representative

Form#

• Registered post with acknowledgment of receipt (LRAR), paper or electronic
• Factual, courteous tone — no motive required
• One page maximum

Time-saver: our free resignation letter generator produces your personalised letter in 2 minutes, with notice automatically calculated and FEC checklist pre-populated.

Express template (to personalise)#

Subject: Termination of the engagement letter dated [date]

Dear Sir or Madam,

I hereby notify you of the termination of the engagement letter signed on [date] between [company name, SIREN] and your firm, effective on [effective date], complying with the [X] month notice period contractually agreed.

Pursuant to articles 21 and 165 of the French CPA Code of Ethics, please hand over by the effective date:

• the standardised FEC (accounting entries file) for each open year;
• the general and auxiliary trial balances at the date of termination;
• the general ledger, journals and supporting vouchers in your possession;
• software backups;
• portal access codes (tax, social) where applicable.

Please coordinate handover with my new firm [name], whose details are: [contact details].

Yours sincerely.

The Code of Ethics (articles 21 and 165) is unambiguous: full handover, no retention, even in case of unpaid fees. Reasonable timeframe: 30 days after the effective date.

Exhaustive checklist#

If retention occurs — 3 levers#

1. Formal demand by registered post citing articles 21 and 165, 15-day deadline.
2. Refer to the regional council of the Ordre (CROEC) — disciplinary procedure is fast and dissuasive.
3. Reconstruction by the new firm (bank statements + invoices + filings) — €500–€2,000, generally recoverable on the outgoing firm's PI insurance.

Across 100 transitions handled by our firm in 2024-2025, fewer than 3 required referral to the Ordre. The vast majority of handovers happen within 30 days.

30-day timeline#

Mandatory consistency audit#

The new firm should validate: opening/closing balance reconciliation, suspense account clearance (471, 472, 47…), letter-matching of customer/supplier accounts, full bank reconciliation, VAT declared vs accounted, justified provisions.

Access to transfer#

impots.gouv.fr pro space, net-entreprises.fr (DSN, DUE), URSSAF employer account, court registry (accounts filing), payroll software, bank (if prior delegation).

Direct fees#

Hidden fees#

• Pro-rata fees of outgoing firm to effective date
• Setup fees (rare but existing)
• ~30 days of reduced productivity on your side during ramp-up

Hayot Expertise — free take-over#

For any file transmitted in standardised FEC format and onboarded under a Hayot Expertise engagement letter, we cover the take-over at no cost: file import, consistency audit, first annual review on the house.

1. Resigning before signing a new firm → legal vacuum, filing penalties.
2. Forgetting the notice period → switch postponed an entire year.
3. Justifying motives in the letter → unnecessary tension, possible handover blockage.
4. Not requesting the FEC explicitly → only PDF exports are sent (insufficient).
5. Paying outstanding fees as ransom for the file → retention is forbidden; pay what is due but never bow to a hostage tactic.
6. Skipping the consistency audit → you inherit hidden errors.
7. Switching during the tax campaign (March-May) → risky during accounts filing.

Companies with a statutory auditor (CAC)#

Switching the CPA does not affect the CAC's mandate but inform them: they will appreciate the transition and may request reconciliation for the next certification. Don't confuse: the CAC is appointed by general meeting for 6 years; the CPA operates under a terminable engagement letter.

Switching close to year-end#

If close is in less than 3 months, two options: (1) let the outgoing firm finalise the tax bundle then switch post-close (recommended); (2) hand over to the new firm — feasible but with elevated take-over fees (€1,500-3,000).

Switching with an open dispute#

Switch first, contest later. Keep all written exchanges. Try Ordre's mediation before any civil litigation — free and usually effective.

Our Paris 8th firm has supported over 80 firm transitions in 2024-2025. Our commitments:

• ✅ Free file take-over via standardised FEC
• ✅ Pre-filled resignation letter
• ✅ Switch guaranteed in < 30 days
• ✅ Consistency audit (balance + VAT + payroll) included
• ✅ First annual review on the house
• ✅ Transparent packages from €89/month excl. VAT (see pricing)

Request your free switch audit — answer within 24 hours, costed transition plan.

• French CPA Code of Ethics — articles 21 and 165
• Decree n° 2007-1387 — mandatory engagement letter
• Ordre des Experts-Comptables
• OEC directory
• BOFiP — FEC retention obligation

Want to switch but need help structuring the migration? Contact Hayot Expertise — we handle the entire procedure for you.

See also: Free resignation letter generator | How to choose your French CPA | How much does a French CPA cost