France's Voluntary Tax Compliance Review (ECF): 2026 Guide

Quick answer. The ECF (Examen de Conformité Fiscale) is a voluntary tax compliance review created by decree no. 2021-25 of January 13, 2021. An authorized provider — typically a chartered accountant registered with the French Order — audits 10 standardized tax points defined by the ministerial order of January 13, 2021, then files an audit report (compte rendu de mission, or CRM) electronically with the DGFiP. Validated points carry an enforceable good-faith presumption under article L. 80 B 9° of the French Tax Procedures Code (LPF). Observed cost in 2026: €1,500 to €3,500 (excl. VAT) for a standard French SME.

The ECF is neither new nor experimental. The mechanism has applied to financial years closed from December 31, 2020 onwards, and it now sits in the DGFiP's catalogue of standardized professional services. Three factors are driving renewed interest in 2026:

• the progressive rollout of mandatory e-invoicing in France (mandatory reception from September 1, 2026) requires VAT and FEC reliability;
• budget pressure on the French state is increasing targeted audits on Forms 2065 and 2031, especially in the Paris region;
• buyers and investors now expect a documented tax file during M&A due diligence or fundraising.

The audit report (CRM) sent with the annual corporate tax return is traced in the DGFiP's information system. Based on observations from our practice, having a recent ECF noticeably reduces the probability of a targeted audit on the points covered. It is not immunity — it is a documented compliance signal.

The ECF is a limited-assurance contractual engagement carried out by an authorized provider — chartered accountant (expert-comptable), statutory auditor (commissaire aux comptes), tax lawyer, AGA or OGA (approved management associations). The mission is governed by three founding texts:

• Decree no. 2021-25 of January 13, 2021 creating the mechanism;
• Ministerial order of January 13, 2021 setting the standardized 10-point audit path;
• Articles L. 80 B 9° and L. 80 A of the French Tax Procedures Code (LPF), governing the formal position of the tax administration.

The review covers exactly 10 standardized points. The provider applies a normed procedure for each point (equivalent to the professional standard NEP applicable to limited-assurance engagements), draws a conclusion on each, and issues a CRM. The CRM is electronically filed with the DGFiP via a dedicated module, together with the annual corporate tax return.

What the ECF is#

• A targeted review of structural tax points set by regulation.
• A contractual engagement framed by a signed mission letter and a fixed fee.
• An enforceable good-faith presumption on the audited and validated points.
• A document referenced in the annual French corporate tax return (Form 2065 for IS, 2031 for BIC IR).

What the ECF is not#

• A blanket certification of the accounts.
• Immunity against any future DGFiP audit (CFE or document-based audit).
• A substitute for tax advice on complex transactions (restructuring, fiscal consolidation, transfer pricing).
• A guarantee on points outside the standardized audit path.

The order of January 13, 2021 fixes a limited list of 10 mandatory points. The provider may neither add to nor remove from the list. The points, in regulatory order:

For each point, the provider concludes compliant, to regularize or not validable as-is. The consolidated CRM is transmitted to the DGFiP.

For surrounding context, see our articles on the French tax audit (CF fiscale), outsourced tax return filing, and the 2026 French tax return deadlines.

The mission follows five operational stages, typically over 6 to 10 weeks for an SME.

1. Scope and engagement letter. Mission letter, scope (financial year, entity, optional additional points), timeline.
2. Document collection. FEC, trial balance, general ledger, depreciation schedules, VAT returns (CA3 or CA12), DSN annual filings, key contracts, supporting documents.
3. Audit work. Application of the standardized audit path to each of the 10 points. Consistency tests, sampling of entries, vouching of supporting documents.
4. Interim feedback. Management debrief on identified issues and on possible regularizations before signing the CRM.
5. CRM and electronic filing. Drafting and signing of the CRM, electronic submission to the DGFiP via the dedicated module, and reporting of the ECF mention in the annual corporate tax return (Form 2065 IS, 2031 BIC IR, or 2035 BNC depending on the regime).

Documents to prepare#

• general balance and general ledger of the financial year;
• FEC in the standardized format (article A. 47 A-1 LPF);
• detailed depreciation schedules;
• monthly or quarterly VAT returns;
• consolidated annual DSN filings;
• supporting documents for exceptional charges and provisions;
• key contracts (leases, intragroup services, manager compensation).

Enforceable good-faith presumption#

Article L. 80 B 9° of the LPF establishes a formal position of the administration in the event of an adjustment on a point validated by the ECF. Concretely, if the DGFiP later challenges an audited point concluded compliant, a taxpayer acting in good faith can obtain:

• non-application of late-payment interest (article 1727 of the French Tax Code);
• non-application of the article 1728 penalty for insufficient declaration where good faith is characterized;
• reimbursement by the provider of interest and penalties applied on a wrongly validated point, capped at the fees received.

This protection applies only to audited points concluded compliant. It does not cover points excluded from the audit path, nor cases of bad faith or fraudulent maneuvers (article 1729 of the French Tax Code).

Structured tax evidence#

The CRM is an enforceable deliverable. In a sale or fundraising context, a recent ECF is a due-diligence document that reassures buyers or investors.

Observed effect on targeted audits#

According to public feedback shared by professional bodies (CNOEC, OEC), companies with a recent ECF see fewer targeted audits. It is not a guarantee, but it is a measurable statistical signal.

Comparison table: ECF vs. other mechanisms#

Fees depend on file size, turnover and transaction complexity. Indicative ranges in the Paris region in 2026:

• micro and small SME (turnover under €1m): €1,200 to €2,000 (excl. VAT);
• SME (€1m to €10m turnover): €2,000 to €4,500 (excl. VAT);
• mid-cap (€10m to €50m turnover): €4,500 to €8,000 (excl. VAT);
• tax-consolidated groups (per entity): from €3,500 (excl. VAT) per company.

ROI breaks down across four axes: securing the audited positions (good-faith presumption), observed reduction of targeted audits, value during due diligence, and internal professionalization. For an SME with €5m to €20m of turnover, a recurring annual ECF is generally amortized in the first year through FEC reliability and prevention of at least one regularization.

Tax-consolidated groups#

The ECF is performed per legal entity, not at group level. A group of five companies therefore requires five separate ECF engagements (or a prioritized subset). The parent company's CRM may, in practice, include a review of the application of the consolidation agreement on adjacent points.

SMEs after a recent tax audit regularization#

An SME emerging from a CFE with regularizations strongly benefits from programming an ECF on the following financial year. The ECF documents the corrective actions implemented and is a strong argument in a later audit.

First-time filers and young companies#

For companies under three years old, an ECF is rarely the priority — unless the company is preparing for fundraising or external growth. Start with a limited review (FEC + VAT) before a full ECF.

Mixed VAT or intracommunity activities#

Auditing point 8 (VAT) is often the most time-consuming. Allow a higher fee budget (+30 to +50%) for companies with significant EU flows, partial VAT deduction, or the single-VAT-payer regime. Our guide on the tax identification number and intra-EU VAT details the prior checks.

• Confusing ECF and certification. The ECF does not bind the provider beyond the audit path. Check the mission letter.
• Assuming the ECF covers exceptional transactions. Restructurings, mergers, complex distributions, carried-forward losses: these fall outside the audit path and require dedicated advice.
• Launching an ECF on unclosed accounts. The ECF applies to a closed and filed financial year. Do not engage the mission without a solid pre-closure.
• Missing the electronic filing deadline. The CRM must be filed within the legal deadline for the tax return (see our guide on 2026 deadlines). A late CRM loses most of its enforceable scope.
• Choosing a non-authorized provider. Check registration with the Order (chartered accountant) or the relevant qualification (AGA, OGA, tax lawyer).

Recently, the director of a 12-million-euro industrial SME in the Paris region engaged our firm after receiving an audit notice. His previous accountant had never proposed an ECF — even though the company had two typical markers (growth above 20% over three years, intragroup flows with a Belgian subsidiary). We carried out the ECF in parallel with the audit operations. Of the 10 points reviewed, 8 were compliant, 2 were the subject of a coordinated voluntary regularization with the inspector. Result: zero late-payment interest on the compliant audited points, and a constructive dialogue with the DGFiP on the regularized points.

The lesson is consistent: an ECF deployed before an audit provides enforceable legal protection; an ECF deployed during or after an audit mainly provides a documented reading of the file, useful but without the same scope.