France is one of the most attractive destinations for international investment in Europe. Yet alongside its network of tax treaties, competitive corporate structures and world-class infrastructure, it also offers one of the most rigorous tax control systems in the EU. In 2024, the French tax administration (DGFiP) recorded a record-breaking €16.7 billion in tax reassessments. This figure illustrates a broader trend: audits are becoming not only more frequent, but also more effective, as digital tools and international transparency reshape the way the French authorities monitor taxpayers.

For foreign-owned companies and international groups, two areas deserve particular attention: the French tax audit – known locally as the vérification de comptabilité – and the system of tax penalties that can follow from such audits. Understanding both is crucial to anticipate risks, protect assets and ensure compliance.

The French tax audit : a field procedure

The “vérification de comptabilité” is not a simple desk review. It is a field audit, conducted by a tax inspector at the company’s premises or at the office of its accountant. The objective is straightforward: to verify whether the tax returns filed by the company (corporate tax, VAT, withholding tax, local taxes) are consistent with its accounting records.

The process always begins with a formal notice of audit, the avis de vérification. This document identifies the taxes and years under review – typically the last three closed fiscal years – and specifies the inspector in charge. It also includes an essential guarantee: the taxpayer’s right to be assisted by an advisor, whether a tax lawyer or an accountant. Without a valid notice, the entire procedure is void, which makes it the cornerstone of taxpayer protection.

During the audit, the inspector examines the company’s accounts, invoices, contracts and supporting documents. Since 2014, businesses must also provide the File of Accounting Entries (FEC), a complete digital export of their bookkeeping, which is now the first item requested. The inspector may then ask for clarifications on specific transactions, compare the accounting records with tax returns, and confront the company with apparent discrepancies. Throughout the process, the exchanges must remain contradictory: the taxpayer is entitled to provide explanations and justifications at every stage.

The length of the audit depends on the size of the company. For small businesses, the law caps the duration at three months. For larger entities, no strict deadline applies, but the process must remain within reasonable bounds.

Consequences of an audit

An audit may confirm the regularity of the accounts, in which case no adjustment follows. But in many cases, inspectors identify irregularities, omissions or inconsistencies. The most serious situation occurs when the accounts are deemed non-probative. In such cases, the administration is entitled to disregard them entirely and to reconstruct taxable income using external indicators such as bank flows, sector benchmarks or stock variations. This approach – known as taxation d’office – often leads to significant reassessments, and the burden of proof shifts heavily onto the taxpayer.

When the inspector intends to make adjustments, the company receives a proposition de rectification, a detailed notice setting out the years concerned, the legal basis of the adjustments, the calculations performed and the penalties envisaged. The taxpayer has thirty days to respond – extendable to sixty – and this is a crucial opportunity to present counter-arguments. A failure to respond is considered tacit acceptance of the reassessment.

Adjustments typically involve disallowed expenses, disputed provisions, reclassified distributions of profits, or denied VAT deductions. The amounts at stake may reach millions of euros for medium and large companies, and penalties frequently exceed the principal tax adjustments.

The system of tax penalties

French law provides for a two-tier sanction system: interests for late payment and penalties proper.

Interests accrue automatically at a rate of 0.20% per month (2.4% annually). They are not intended as punishment, but rather as compensation for the delay in payment.

Penalties, by contrast, reflect the administration’s assessment of the taxpayer’s behaviour. A simple late filing may trigger a 10% surcharge. When the administration considers that the taxpayer has acted deliberately to evade tax, the penalty rises to 40%. Fraudulent schemes, abuse of law or hidden activities are punished by an 80% surcharge. In rare and extreme cases, such as the use of interposed entities to conceal offshore accounts, penalties may reach 100%.

Beyond these general surcharges, French law also provides for a wide array of specific fines. Companies that fail to produce transfer pricing documentation face a minimum penalty of €10,000, which may escalate depending on the size of the transactions. Undeclared foreign bank accounts are fined €1,500 each – or €10,000 if the account is located in a non-cooperative jurisdiction. VAT fraud schemes, particularly in cross-border chains, are subject to cumulative sanctions that can exceed the tax itself.

When tax meets criminal law

One of the most sensitive issues is the frontier between tax sanctions and criminal prosecution. French law allows both to be applied simultaneously, provided they pursue distinct objectives and remain proportionate. This means that a company may be subject to a fiscal surcharge and, at the same time, its directors may face criminal prosecution for tax fraud.

Tax fraud, defined in article 1741 of the French Tax Code, consists of fraudulently evading tax by concealing income, falsifying accounts, using false invoices or engaging in abusive schemes. The penalties are severe: up to five years in prison and a €500,000 fine, or seven years and €3 million in cases of organized fraud. Additional penalties may include management bans, deprivation of civic rights and the publication of the conviction.

In 2024, more than 2,000 tax fraud cases were transmitted to the public prosecutor, a figure that continues to rise as the French authorities make the fight against tax fraud a political priority. The National Financial Prosecutor (PNF) and the Judicial Tax Investigation Service (SEJF) now play a central role in handling these cases.

Digitalization and the role of artificial intelligence

The digitalisation of tax audits has transformed the landscape. Since the introduction of the FEC, the DGFiP has developed advanced tools to cross-check data and detect anomalies. In 2024, over half of all audits were triggered by algorithmic scoring.

Today, the administration systematically cross-references accounting data with VAT filings, bank transactions, customs declarations and international information exchanged under CRS, DAC6 and FATCA. For foreign-owned companies, this means that audits are rarely random: they are increasingly based on strong digital evidence gathered before the first contact.

Defense strategies

For foreign investors, the key to managing French tax audits and penalties lies in anticipation. Preventive measures include conducting internal audits of the accounting system, ensuring that French tax filings are consistent with consolidated accounts, and carefully documenting sensitive transactions such as management fees, transfer pricing adjustments or intra-group loans.

During the audit, it is essential to be assisted by a tax lawyer who can safeguard the taxpayer’s rights and structure the exchanges with the inspector. Providing clear and accurate answers is important, but over-disclosure can sometimes create new risks.

When faced with a reassessment, the taxpayer should systematically respond in writing, citing legal provisions and jurisprudence. Hierarchical recourse, referral to tax commissions or even litigation before the administrative courts may all be considered. In parallel, negotiations with the administration may lead to a reduction in penalties through a settlement, particularly where the legal position is uncertain.

Conclusion : compliance as a strategic imperative

French tax audits and penalties in 2025 represent a real strategic challenge for international businesses. The combination of digital targeting, heavy fiscal surcharges and the possibility of criminal prosecution creates a landscape where errors, even unintentional, can be extremely costly.

The lesson is clear : compliance, documentation and professional assistance are no longer optional. They are conditions for sustainable investment in France.

At Qualifisc, we assist foreign companies and investors at every stage of this process – from preventive audits and risk assessment to defense strategies and negotiations with the administration.

Contact us for a confidential consultation: in France, being prepared is the best defense.