French tax audit 2026: prepare and pass a CFE

Quick answer. In 2026, a French corporate tax audit takes four forms: desk audit, accounting examination (digital), on-site accounting verification (CFE) and personal tax situation review (ESFP). The standard reassessment period is three years under Article L169 of the French Tax Procedures Book (LPF), extended to six years for undisclosed activity and up to ten years for undeclared foreign assets. The best defence remains a compliant FEC (Standard Audit File for Tax) under the 29 July 2013 ministerial order and a fully documented file before the first letter from the tax administration.

The French Tax Authority (DGFiP) confirmed in its 2024 annual report — orientation maintained for 2026 — that audits are increasingly data-driven. Half of all audit programming now comes from algorithms run by the Ciblage de la fraude et valorisation des requêtes (CFVR) team, cross-referencing VAT returns, payroll DSN, corporate income tax filings, banking data and wealth data.

For an SME owner, this changes the picture. Risk is no longer limited to traditionally monitored sectors (hospitality, construction, e-commerce). Any company showing a statistical anomaly — gross margin collapse, atypical overhead ratio, recurring debit shareholder loan accounts — can be selected for a digital accounting examination, introduced by the 2016 amended Finance Act and codified at LPF Article L13 G.

At Hayot Expertise, we have advised executives facing a first audit notice since 2010. We observe that companies preparing upstream — securing the FEC, reconciling quarterly returns and formalising analytical documentation — reduce by 40 to 70 % on average the potential reassessment amount in subsequent audits.

The Tax Procedures Book identifies four procedures applicable to companies.

Desk audit (contrôle sur pièces)#

Governed by LPF Article L10, the desk audit is the most frequent procedure: the inspector reviews filed returns (VAT CA3, corporate tax form 2065, BIC form 2031, BNC form 2035, individual income tax form 2042) and compares against third-party data. It may lead to a request for clarification (Article L16) or directly to a reassessment proposal (form 2120-SD) without on-site intervention.

Accounting examination (examen de comptabilité)#

Introduced by LPF Article L13 G, the accounting examination is entirely digital. The administration sends an examination notice; you then have fifteen days to send the FEC digitally. The examination covers all or part of the accounting, without on-site work. Maximum duration: six months from FEC receipt.

On-site accounting verification (CFE)#

The on-site verification, codified at LPF Articles L13 and L47, remains the reference procedure for in-depth audits. It takes place in the company's premises (or at its chartered accountant's office). The verification notice (form 3927-SD) must be sent at least two clear days before the first intervention and must mention the right to be assisted by counsel. For SMEs (turnover under €818,000 for sales or €247,000 for services in 2026), the on-site duration is capped at three months (Article L52 LPF).

Personal tax situation review (ESFP)#

The ESFP, provided for at LPF Article L12, targets the executive personally. It cross-references wealth, lifestyle and declared income. It is often triggered downstream of a corporate audit revealing unusual shareholder loan accounts.

The Charter of Rights and Obligations of the Audited Taxpayer, opposable to the administration under LPF Article L10 paragraph 4, is the reference document. The 2026 version must be handed to you (or downloaded from impots.gouv.fr) before any intervention. Relying on it is free and is an absolute right.

Essential procedural guarantees#

1. Notice period: verification notice received at least two clear days before the first on-site intervention.
2. Assistance: right to be assisted by counsel of your choice (chartered accountant, tax lawyer) throughout the procedure.
3. Oral and adversarial debate: obligation for the inspector to engage dialogue before the reassessment proposal (settled French Council of State case law, SARL Trace ruling, 13 October 1999).
4. Time limits: three months on-site for SMEs (Article L52 LPF), six months for digital examination.
5. Hierarchical appeals: right to escalate to the principal inspector and then the departmental interlocutor in case of disagreement.
6. Commissions: Departmental Commission for Direct Taxes and Turnover Taxes (CDIDTCA), CIR Advisory Committee (CCRAD), Tax Abuse of Law Committee (CADF).

Reassessment deadlines#

Source: Articles L169, L176 and L180 of the Tax Procedures Book, in force in spring 2026.

Step 1 — Secure the FEC#

The FEC (Standard Audit File for Tax) has been mandatory since 2014 (LPF Article L47 A-I, ministerial order of 29 July 2013). Non-compliance triggers a €5,000 fine per audited fiscal year (Article 1729 D of the French Tax Code), raised to 10 % of additional tax due in case of reassessment. Worse, a rejected FEC entails rejection of the accounts and ex officio assessment — the worst-case scenario.

The eight most frequent FEC anomalies we observe:

• missing mandatory column (18 columns required);
• forbidden characters in descriptions (tabs, line breaks);
• debit/credit imbalance at entry level;
• entry numbering not chronological or not sequential;
• missing monthly journal file;
• amounts not expressed in decimal numeric format;
• encoding other than UTF-8 (ISO 8859-15 tolerated);
• incorrect date format.

Step 2 — Reconcile filed returns#

A quarterly reconciliation of key indicators is our firm standard:

Step 3 — Build the "sensitive areas" file#

For each of the following areas, we produce an explanatory note archived with supporting documents:

• meal and travel expenses (BOFiP BOI-BIC-CHG-40-20-10);
• mixed-use expenses (company car, phone, internet);
• intra-group management fees (Council of State case law SARL Cheminées Lorraines, 4 October 2023);
• debt waivers and shareholder loans;
• provisions for risks and charges (case-by-case justification);
• dividends and executive remuneration (balance to preserve TNS social cover);
• transfer pricing and intra-group flows (form 2257-SD beyond €50M turnover).

Step 4 — Prepare a welcome file for the inspector#

The welcome file contains: group chart, analytical chart of accounts, key contracts (lease, intra-group agreements, recurring commercial contracts), three years of board minutes for the audited period, read-only access to the accounting software.

The reassessment proposal (form 3924-SD) opens a thirty-day period to submit observations (LPF Article L57), extendable by thirty days on motivated request. Drafting this response is the most strategic step.

Six golden rules of the response#

1. Never spontaneously acknowledge a reassessment head before full legal analysis.
2. Explicitly contest what must be contested: otherwise, the base is deemed accepted.
3. Separate fact from law: challenge materiality, legal qualification and amount.
4. Mobilise authoritative sources: BOFiP, French Council of State and CJEU case law, opposable administrative doctrine (LPF Article L80 A).
5. Anticipate consequences: penalties (40 % deliberate breach, 80 % fraudulent manoeuvres), late interest of 0,20 % per month (CGI Article 1727), Treasury lien.
6. Preserve the settlement option (LPF Article L247): a settlement may occur before or after recovery and, in practice, reduces penalties by 30 to 60 %.

Audit following a Tax Compliance Review (ECF)#

If your company has undergone an ECF (decree no. 2021-25 of 13 January 2021), conducted by a statutory auditor, chartered accountant or accredited body, you benefit from a good-faith presumption on the ten audited points. In case of later reassessment on one of these points, penalties and late interest are set aside (LPF Article L80 B 9°). We cover this in detail in our Tax Compliance Review (ECF) guide.

Targeted VAT audit#

The DGFiP particularly targets quarterly adjustments, VAT credit refunds above €15,000, and intra-EU transactions (DEB-DES). Reconciliation of declared bases with banking flows and VIES filings is essential.

Audit following a tip-off#

The "tax whistleblowers" practice, extended by the 23 October 2018 law, allows the informant to be paid. If you suspect a tip-off (former partner, former employee), have your file validated by a tax lawyer before any communication.

International audit#

International administrative assistance (DAC 7 directive, CRS automatic exchange) allows the DGFiP to obtain, on average in 2025, tax information from a European bank in less than 90 days. Any undeclared offshore structure must be regularised beforehand via the compliance service.

• Responding in haste without validation by experienced counsel.
• Confusing desk audit and verification: procedural guarantees are not identical.
• Refusing the FEC copy: €5,000 fine per fiscal year (CGI Article 1729 D), interpreted as obstructive behaviour.
• Multiplying contacts: one single spokesperson (executive or mandated chartered accountant) avoids contradictions.
• Underestimating the adversarial phase: 60 % of on-site verifications settle before recovery, provided hierarchical appeals and commissions are actively mobilised.
• Missing deadlines: the thirty days to respond to a reassessment proposal are clear days and not extendable without written motivated request.

We recently advised the executive of a Paris industrial SME (€4.5M turnover) the day after a verification notice covering three fiscal years. Initial announced exposure exceeded €280,000 of corporate tax and VAT reassessments, mainly on management fees billed by his Luxembourg holding and entertainment expenses. Over seven weeks of joint work with his tax lawyer, we rebuilt analytical supporting documents, demonstrated the economic substance of intra-group services (cost-plus method, Pan-EU comparables) and restructured the argument during the adversarial phase. The final reassessment proposal was reduced to €47,000 without penalties. This outcome is not exceptional: it simply illustrates that a structured, methodically defended documentary file can divide initial exposure by five or six.

The most costly mistake we see remains that of the executive responding alone in the first week of the audit, hoping to "reassure" the inspector. The oral and adversarial debate is not an informal chat: every statement is recorded in the minutes and may be opposed later. Before the first intervention, we systematically prepare clients for one reflex only: welcome, do not promise anything, take notes, schedule a second meeting 48 hours later.

Hayot Expertise advice. From the moment you receive a verification or examination notice, suspend any written communication with the inspector for 48 hours. Convene your chartered accountant and, if the potential risk exceeds €50,000, a tax lawyer. Prepare the FEC, the list of key contracts and a reconciliation file before the first intervention. This discipline turns a feared audit into a controlled procedure.

To structure your file upstream, see our article on the Tax Compliance Review (ECF), our guide on the FEC accounting entries file and our update on online tax questions and rescripts. For the upstream filing calendar, see our 2026 French tax deadlines and the 2026 tax return filing deadline. For commonly reassessed sensitive topics, our deep-dive on excessive expenses (Article 39-4 CGI) and on holding-based tax optimisation.