What Is Cassation? Appealing to the Dutch Supreme Court

Cassation (cassatie) is an appeal to the Supreme Court of the Netherlands (Hoge Raad) in which the Court only reviews whether the lower court applied the law correctly and gave adequate reasons; it does not re-examine the facts or hear witnesses. The main exception is that a factual finding can still be challenged if the reasoning behind it is incomprehensible or does not support the conclusion.

A party who believes the facts were simply assessed wrongly has no remedy in cassation, and that is the most common reason an appeal fails before it begins. Below we explain how cassation differs from an ordinary appeal, which grounds are available, how the procedure runs, what the possible outcomes are and what it costs.

The grounds are narrow. Under Article 79 of the Judiciary Organisation Act (Wet op de rechterlijke organisatie, RO), a judgment can be quashed for a breach of the law, including unwritten law and European law, or for a failure to observe procedural rules prescribed on pain of nullity, which includes reasoning so deficient that the decision cannot be understood.

Before the Court decides, an Advocate General usually delivers an independent opinion. The Court is not bound by it, but it gives a good indication of how the case is viewed. If the appeal succeeds, the Court usually quashes the judgment and refers the case to another court to be decided again; sometimes it decides the case itself.

Two practical constraints shape the decision to appeal. You must be represented by a lawyer, and in civil cases only a lawyer who meets the additional requirements for cassation practice may act. And the time limits are short: in principle three months from the judgment in civil cases and fourteen days in criminal cases. Because the grounds must be formulated precisely, the assessment of whether an appeal is viable has to be made soon after the judgment.

What is the difference between cassation and an ordinary appeal?

In an ordinary appeal (hoger beroep), the court of appeal hears the whole case again, facts and law. In cassation, the Supreme Court only checks whether the law was applied correctly and the procedure was followed.

Many people see cassation as simply a third round of the same case. That is a misunderstanding, and it helps to use a comparison.

An ordinary appeal is like a second opinion from a new doctor, who examines you again from top to bottom, looks at all the evidence and does his own tests. The court of appeal (gerechtshof) does the same: it re-evaluates the facts, the evidence and the arguments.

Cassation is more like a review board that checks whether the original doctor followed the rules of the profession. The board does not examine you again. The Supreme Court works the same way: it does not dig back into the facts of your case.

The core question in cassation is not “What happened?”, but “Did the lower court apply the law correctly and follow the right procedure?”

The Supreme Court is the highest court in the Netherlands for civil, criminal and tax cases. In most administrative law cases, other highest courts decide, such as the Administrative Jurisdiction Division of the Council of State. The purpose of cassation is to ensure that the law is interpreted and applied in the same way throughout the country, which is vital for legal certainty.

Cassation and ordinary appeal at a glance

The table below shows the main differences.

Why does this distinction matter?

It determines whether cassation makes sense at all. If you disagree with how the judge weighed the facts, for example because you think a witness statement was given too much or too little weight, cassation is not the right route.

An appeal in cassation only makes sense if there are grounds for:

• Breach of the law (schending van het recht): the lower court misinterpreted or wrongly applied a legal rule.
• Failure to observe procedural rules (verzuim van vormen): a significant procedural error, including a failure to give proper reasons for the decision.

The assessment of the facts is in principle reserved for the courts below. The Supreme Court only intervenes in factual matters if the reasoning is incomprehensible, for example because the court ignored an essential argument or its conclusion does not follow from its findings.

Why does the Dutch system have cassation?

Cassation exists to guarantee legal unity: one highest court ensures that the law means the same thing throughout the country. The system was introduced in the Netherlands under French influence in the early nineteenth century.

To understand what cassation is, it helps to look at where it came from. The concept is not originally Dutch; it arrived with French rule in the Napoleonic era. Before that, the Netherlands had a patchwork of regional laws and courts, which often led to inconsistent rulings.

Imagine doing business or settling a dispute in a country where the rules change as soon as you cross a provincial border. The outcome of a case could depend more on where it was tried than on the law itself. There was no single highest authority to ensure that everyone applied the same rules.

How did a unified legal standard come about?

The French legal system, including the idea of cassation, was introduced in the Netherlands around 1811, when the country was part of the French Empire. The Supreme Court (Hoge Raad) was established in 1838, at the same time as the introduction of the Dutch Civil Code.

For the first time, one highest court had the power to quash decisions of lower courts that had misinterpreted or misapplied the law.

The primary goal of cassation was not to give the losing party another chance. It was about creating legal unity and legal certainty across the country, so that the law means the same in Maastricht as in Groningen.

This history explains why the Supreme Court’s role is strictly defined today. It is not a super court of appeal that re-examines facts, but the guardian of legal uniformity. That is also why the law allows the Procurator General at the Supreme Court to bring an appeal in cassation in the interest of the law (cassatie in het belang der wet), purely to obtain a ruling on a legal question, without affecting the parties’ position.

Which grounds are valid for a cassation appeal?

Only two grounds are valid: failure to observe procedural rules and breach of the law. Being unhappy with the outcome is not enough.

A cassation appeal is not a second chance to argue your case; it is a specific legal challenge. Understanding the two grounds is the first step in finding out whether cassation is an option for you.

The Supreme Court does not decide who was right about the facts. Its task is to check whether the lower court followed the rules. Compare it with a football match: the lower court judge is the referee, and the Supreme Court is the video assistant referee who only intervenes when the referee made a clear mistake in applying the rules, not to debate whether a player deserved a yellow card.

In Dutch law, these two grounds are known as verzuim van vormen and schending van het recht, as set out in Article 79 RO.

Verzuim van vormen: procedural errors

The issue is not the judge’s assessment, but the failure to follow a procedure that must be followed. Common examples are:

• Insufficient reasons: the court does not properly explain why it reached its decision, so the parties cannot follow the reasoning.
• Ignoring an essential argument: the judge does not respond to an essential defence or argument of one of the parties.
• Violating the right to be heard: the court bases its decision on documents or information on which a party could not respond.

Such errors undermine the basis of a fair procedure. If the Supreme Court finds that the error is serious enough, the decision cannot stand, whatever the facts may have been.

The principle is that the way to a decision is as important as the decision itself. If the process was flawed, the outcome cannot be relied on.

Schending van het recht: breach of the law

If a procedural error is about the referee not following the procedure, a breach of the law is about the referee misunderstanding a rule. Imagine a referee awarding a penalty for an action that the rules explicitly say is not a foul. The referee saw the event correctly, but got the rule wrong.

Examples of a breach of the law are:

• applying an outdated or repealed rule to the case;
• misinterpreting a legal term in a statute or a treaty;
• applying an incorrect legal standard developed in the case law of the Supreme Court.

The breach of foreign law does not count: under Article 79 RO, the Supreme Court does not review the application of the law of other states. European Union law and treaties that apply in the Netherlands do count.

This ground goes to the heart of the Supreme Court’s purpose: legal uniformity. By correcting legal errors, the Supreme Court clarifies what the law means and how all Dutch courts must apply it. That is the essence of cassation: a tool for legal correction, not for a new assessment of the facts.

How does the cassation procedure work, step by step?

The procedure is almost entirely written and bound by strict time limits. Your lawyer files the appeal with the grounds, the other party responds, an Advocate General gives an opinion and the Supreme Court decides.

A case at the Supreme Court is very different from an ordinary court case. There are rarely hearings where lawyers argue in person. The focus is on precise legal documents that identify the errors of the lower court.

Step 1: filing the appeal and representation

The time limit starts on the date of the judgment. In civil cases, your lawyer serves a writ of summons in cassation (cassatiedagvaarding) on the other party, in principle within three months of the judgment; in civil cases started by petition, a cassation petition is filed with the Supreme Court.

In criminal cases the procedure is different. The appeal in cassation must be lodged at the registry of the court that gave the judgment within fourteen days. The grounds are then set out in a written statement of grounds (cassatieschriftuur), which a lawyer must file within the statutory period after the Supreme Court has received the case file.

Representation by a lawyer is mandatory in civil and criminal cassation; you cannot file the appeal yourself. In civil cases, the lawyer must also meet the additional requirements for civil cassation practice set by the Netherlands Bar (Nederlandse orde van advocaten), such as an examination and a minimum number of cassation cases. Your previous lawyer can only act if he or she meets those requirements; otherwise a cassation lawyer takes over the case. In tax cases, different rules apply.

These requirements are not a mere formality. Cassation lawyers know the technical requirements for formulating grounds and how the Supreme Court assesses them.

Step 2: the exchange of written arguments

In a civil case, the grounds for cassation (cassatiemiddelen) are already set out in the writ of summons. The other party then responds, and both parties can explain their positions in writing.

The exchange typically runs as follows:

• Grounds for cassation: in the writ of summons, your lawyer sets out exactly where the lower court went wrong on points of law or procedure.
• Statement of defence (conclusie van antwoord): the other party’s lawyer responds and argues why the judgment should stand. The other party can also lodge a cross-appeal (incidenteel cassatieberoep).
• Written explanation (schriftelijke toelichting): both parties can explain their positions in more detail.
• Reply and rejoinder (repliek and dupliek): a short further written round, which is not part of every case.

The whole exchange is a disciplined legal dialogue on paper. The arguments must stay within the grounds for cassation; new facts or evidence cannot be introduced.

Step 3: the opinion of the Advocate General

After the written exchange, the case goes to the Office of the Procurator General at the Supreme Court (Parket bij de Hoge Raad). This is a distinctive feature of the Dutch system.

The office acts as an independent adviser to the Supreme Court. An Advocate General (advocaat-generaal) studies the file and writes an opinion (conclusie), which analyses the legal questions and recommends whether the appeal should succeed. The parties can respond to the opinion in writing.

The Supreme Court is not bound by the opinion, but it carries significant weight. The justices then review the file, including the written arguments and the opinion, and give their judgment.

Can the Supreme Court decide without full reasoning?

Yes. Under Article 80a RO, the Supreme Court can declare an appeal inadmissible if the complaints do not justify a hearing in cassation, because the party clearly has insufficient interest or the complaints clearly cannot succeed.

In addition, under Article 81 RO, the Supreme Court can dismiss complaints with abbreviated reasoning if they cannot lead to cassation and do not raise questions that need to be answered in the interest of legal unity or legal development. In practice, many appeals are decided in this way.

What are the possible outcomes of a cassation appeal?

The Supreme Court either dismisses the appeal, or quashes the judgment and then decides the case itself or refers it to another court. Which outcome applies determines whether the case is over.

It is not a simple matter of winning or losing. Each outcome sends your case in a different direction.

Outcome 1: the appeal is dismissed

The most common outcome is a dismissal (verwerping). The Supreme Court finds that the lower court made no relevant procedural error and did not misapply the law.

The judgment of the lower court then becomes final. For the party who brought the appeal, the case is over, and the earlier judgment stands.

Outcome 2: the judgment is quashed and the Supreme Court decides itself

If the appeal succeeds, the Supreme Court quashes (vernietigt) the judgment. It can then decide the case itself, but only if no further factual investigation is needed.

In that situation, the Supreme Court corrects the error and gives a final decision, which ends the case.

Outcome 3: the judgment is quashed and the case is referred

The most common outcome after a successful appeal is that the Supreme Court quashes the judgment and refers the case (verwijzing) to another court of the same level, usually a different court of appeal, to be decided again.

Compare it with a replay: the Supreme Court identifies the error, and the case is then heard again from the point where it went wrong, with the new court applying the rule as the Supreme Court has explained it.

A successful cassation appeal therefore does not automatically mean that you win the case itself. What you win is a new assessment in which the correct legal rule is applied. Judgments can also have effects abroad; you can read more about the recognition and enforcement of foreign judgments.

What does cassation cost, and what should you consider before appealing?

The costs consist of the court fee, the fees of the cassation lawyer and, if you lose, possibly a contribution to the other party’s legal costs. Weigh these against a realistic assessment of your chances.

A cassation appeal is a serious financial and strategic commitment. Before you start, get a clear view of the costs and the risks.

What are the main costs?

The costs fall into three categories. Budget for all of them to get a realistic picture.

• Court fee (griffierecht): the fee you pay to the court. The amount depends on the type of case and on whether you are a natural person or a legal entity, and is adjusted every year.
• Lawyer’s fees: in civil cases you must be represented by a lawyer who meets the requirements for cassation practice. Drafting precise grounds takes specialised work, and the fees are a major part of the total cost.
• Costs order: in civil cases, the losing party is usually ordered to pay a fixed contribution to the other party’s legal costs.

Individuals with limited means may be eligible for subsidised legal aid (gefinancierde rechtsbijstand) through the Legal Aid Board. Strict income and asset limits apply.

Be realistic: most cassation appeals do not lead to the judgment being quashed. The Supreme Court is selective, and many appeals are dismissed with abbreviated reasoning.

That does not mean a well-founded appeal is pointless. But you must weigh the certain costs against the chance of success, and consider what a referral would mean for you in time and costs.

What should you check before you decide?

Ask yourself and your lawyer the following questions:

• Is the complaint about the law or the reasoning, or really about the assessment of the facts?
• Was the argument you want to raise in cassation already made in the lower court? New arguments that require factual investigation cannot be raised for the first time in cassation.
• Is the judgment final, or is an ordinary appeal still possible? Cassation is in principle only open against judgments in the last instance.
• What happens during the cassation procedure: can the other party already enforce the judgment?
• If the judgment is quashed and referred, are you prepared for a new round before another court?

A frank discussion with a cassation lawyer about the merits of your case is essential. Many cassation lawyers first give an opinion on the chances before they accept the case. Do this soon after the judgment, because the time limit is short.

In summary

• In cassation, the Supreme Court only reviews the application of the law and the reasoning, not the facts.
• The only grounds are breach of the law and failure to observe procedural rules (Article 79 RO).
• The time limit is in principle three months in civil cases and fourteen days in criminal cases; representation by a lawyer is mandatory, in civil cases by a lawyer who meets additional requirements.
• An Advocate General gives an independent opinion before the Supreme Court decides.
• If the appeal succeeds, the case is usually referred to another court to be decided again.

Common questions about cassation appeals

Law & More assists clients whose case may go to the Supreme Court: we assess the judgment quickly and advise you on whether an appeal in cassation is realistic, what it involves and what it is likely to cost. Unsure where you stand? Tell us about your situation. We will let you know your options within one working day.

How Law & More can help you with this is explained on our civil lawyer page.