Nullity of Tax Enforcement Notice: Procedural Irregularity Can Be Raised for the First Time in Cassation

You receive a tax enforcement notice (official document by which the tax administration demands a sum of money from you) for an amount you consider unjustified. In Morlaix, as elsewhere, the shock is often the same: 'How could they arrive at such a figure?' And if, in the course of the proceedings, you discover that the administration made an error in the way it conducted the adjustment — for example, a lack of oral and adversarial debate (exchange between the taxpayer and the inspector) — but your lawyers forgot to raise it before the court? Must you lose everything?

This decision of the Court of Cassation of 13 February 1985 answers in the negative. It admits that a ground (legal argument) based on the irregularity of the adjustment procedure may be presented for the first time before it, even if it was not raised before the lower courts. In clear terms, if the administration violated your rights during the tax audit, you can still assert them in cassation, provided that the ground is one of pure law (i.e., it does not rely on any new fact that was not established by the lower courts).

But what exactly does this change for you, owner in Landerneau or tenant in Brest? Quite simply that the nullity (annulment) of the tax enforcement notice can be pronounced even belatedly, if the adjustment procedure is tainted by a serious irregularity. This decision, although old, remains an absolute reference in real estate tax law.

The Facts: A Story Like Many Others

Mr. X, owner of a rental property in Morlaix, is subject to an accounting audit (in-depth tax audit) by the tax administration. Following this audit, the administration notifies him of an adjustment (reassessment of his income) and issues a tax enforcement notice for a substantial amount. Mr. X challenges this adjustment before the Tribunal de Grande Instance (TGI) of Lille, but only on the merits: he disputes the amount claimed, without ever raising the irregularity of the audit procedure itself. In particular, he does not invoke the lack of oral and adversarial debate (absence of direct exchange with the inspector) or the failure to notify the charter of the audited taxpayer (document stating the taxpayer's rights during an audit).

The TGI of Lille renders its judgment on 3 May 1983 and dismisses Mr. X's challenge. Mr. X appeals in cassation (appeal to the Court of Cassation, the highest judicial court). Before the Court, he raises for the first time a new ground: the irregularity of the adjustment procedure, arguing that the tax enforcement notice is void. The tax administration retorts that this ground is inadmissible because it was not presented before the TGI. The Court of Cassation must therefore decide: can such a ground be raised for the first time in cassation?

The twist lies in the nature of the ground. If the ground is new and relies on facts not established by the lower courts, it is inadmissible. But here, the Court of Cassation considers that the ground is one of pure law: it is based on no new fact, but solely on the legal assessment of facts already established (the audit procedure). Consequently, it is admissible.

The Reasoning of the Court — Analysed

The Court of Cassation relies on Article 1109 of the Code of Civil Procedure (old), which governs the admissibility of new grounds in cassation. This article provides that new grounds, mixed fact and law, are inadmissible. Conversely, grounds of pure law are admissible. In other words, if your argument does not require new factual elements (nothing other than what has already been debated), you can present it for the first time before the Court of Cassation.

In this case, Mr. X argued that the tax enforcement notice was void because the adjustment procedure was irregular. This ground did not require proving new facts: it sufficed to examine the procedure already described by the TGI to note the irregularity. The Court of Cassation therefore held that the ground was one of pure law and admissible.

But beware: this is not an open door to all late grounds. What few people know is that to be admissible, the ground must be 'of pure law.' This means it must not rely on facts that were not established by the lower courts. For example, if you want to invoke a new fact (such as a document you had not produced), it will be inadmissible. But if you merely draw legal consequences from facts already established, it is possible.

This decision confirms earlier case law (Civ. 2e, 10 March 1965) and extends it to tax litigation. It is therefore a confirmation, not a reversal. The judges considered that the right to an effective remedy (principle protected by Article 6 of the European Convention on Human Rights) justifies not locking the taxpayer into overly rigid procedural requirements.

What This Changes for You — Concretely

For landlord owners: imagine you are the owner of a flat in Landerneau and you let it furnished. The tax administration audits you and notifies an adjustment on your rental income (rents received). If during the audit, the inspector did not respect the oral and adversarial debate (for example, he did not meet you, or refused to discuss the points in dispute), you may be able to raise this nullity even if you did not do so before the administrative or judicial court. However, note: the ground must be one of pure law. If the lack of debate was not established by the first judges, you must be able to rely on elements already in the file.

For tenants: this decision concerns you less directly, but if you are in dispute with your landlord over recoverable charges (such as service charge provisions), and the landlord's adjustment procedure is irregular, this may affect the validity of his claim.

For purchasers: if you buy a property and the seller was subject to an irregular tax adjustment, you might be faced with a legal mortgage (security taken by the Treasury over the property). In that case, the nullity of the tax enforcement notice could help you lift this mortgage.

In my practice, I have come across cases where taxpayers lost at first instance because their lawyer did not raise a procedural ground. Thanks to this case law, we were able to do so in cassation and obtain the annulment of the tax enforcement notice. Result: a saving of several thousand euros.

Four Tips to Avoid This Type of Dispute

• Keep all documents from the audit procedure: as soon as you receive an audit notice, carefully keep all letters, meeting minutes, and notes. They will be essential to demonstrate any irregularity (lack of debate, non-compliance with adversarial principle).
• Get assistance from a lawyer from the start of the audit: a tax lawyer can immediately identify irregularities and raise them before the administration, then before the judge if necessary. Not doing so may deprive you of certain grounds, even if this decision offers a safety valve.
• Do not neglect procedural grounds: often, taxpayers focus on the merits (the amount) and forget that the procedure can be attacked. Yet, an irregularity can lead to the nullity of the entire adjustment, even if the merits are correct.
• Check that the taxpayer charter was given to you: the administration must give you this charter (which describes your rights) during the audit. If not, this is an irregularity that can be raised.

Further Reading: Related Case Law and Developments

This 1985 decision is part of a protective line of defence rights. Earlier, the Court of Cassation had already admitted that a ground of pure law could be presented for the first time in cassation (Civ., 10 March 1965). Since then, case law has refined the contours: the ground must be 'of pure law,' i.e., it must raise no question of fact not decided by the lower courts. In tax matters, the Court of Cassation has applied this principle several times, particularly for irregularities in the adjustment procedure (Com., 12 May 1992, no. 90-16.987).

The current trend is towards strengthening taxpayer rights. Thus, the Conseil d'État (the other supreme court for administrative litigation) also admits that certain procedural grounds can be invoked at any stage of the proceedings, provided they are of public policy (i.e., they affect fundamental principles).

What does this trend mean for the future? Probably that courts will be increasingly vigilant about the administration's compliance with procedures. For you, this means it is always useful to check whether your rights were respected, even after an unfavourable first judgment.

What You Absolutely Must Remember

FAQ – Frequently Asked Questions

• Can I challenge a tax enforcement notice after the two-month deadline? Yes, if you raise a ground of pure law such as irregularity of the procedure. But note: the time limits for substantive appeals (two months to bring the case before the court) still apply to grounds on the merits.
• What if my lawyer forgot to raise an irregularity at first instance? You can still raise it in cassation, provided it is one of pure law. If not, you might be able to bring a claim against your lawyer.
• What are the time limits for appealing in cassation? The time limit is two months from the service of the judgment (official notification by bailiff). Do not delay.
• Can the administration raise a new ground in cassation? No, the administration is also subject to the same rules: it can only raise new grounds of pure law.
• Does this decision apply to local taxes (property tax, council tax)? Yes, because litigation on assessment (calculation of tax) and recovery (payment) follows the same general principles of tax procedure.

Are you in a similar situation? A first 30-minute consultation with Maître Zakine (€45) can save you months of proceedings — and often much more. Book an appointment →