Dutch contract law rests on freedom: freedom to contract or not, freedom to choose the counterparty and the content, and freedom of form. An agreement comes into being through offer and acceptance under Article 6:217 of the Dutch Civil Code (Burgerlijk Wetboek, BW), and Article 3:37 BW permits a declaration in any form, so an oral contract binds just as a written one does. The main exception: mandatory law, good morals and public order set limits, and a few contracts do require a specific form.
Two doctrines then qualify that freedom, and they run through the whole of Dutch contract practice. Reasonableness and fairness (redelijkheid en billijkheid), in Article 6:248 BW, add to a contract obligations that the parties did not write down. They also disapply a clause where reliance on it would be unacceptable in the circumstances. Interpretation follows what the parties could reasonably infer from one another’s statements and conduct, rather than the literal text alone. The negotiation record and the parties’ conduct after signature therefore remain relevant to what a clause means.
Where performance fails, the remedies are cumulative rather than exclusive. You can demand performance, suspend your own performance, terminate the contract for a failure of sufficient weight under Article 6:265 BW, and claim damages under Article 6:74 BW. For most obligations, however, the other party must first be in default (verzuim). That normally requires a written notice of default (ingebrekestelling) setting a reasonable period for performance. Without that notice, a claim that is sound on the merits can still fail.
This article sets out the elements of a valid contract, the rules on general terms and conditions, the remedies available when a contract is broken, and the drafting choices that prevent disputes rather than merely resolving them.
Table of Contents
What are the key principles of Dutch contract law?
Three principles carry Dutch contract law: freedom of contract, reasonableness and fairness, and the binding force of what you agreed. Each has limits, and those limits often decide a dispute.
How free are you to agree what you want?
Very free, but not without limits. You decide whether you contract, with whom, on what terms and in what form. A handshake or an exchange of emails can create a binding agreement, because Article 3:37 BW allows a declaration in any form unless the law says otherwise.
The limits come from mandatory law. A legal act that conflicts with good morals or public order is void under Article 3:40(1) BW. A legal act that conflicts with a mandatory statutory provision is void as well. Where that provision protects only one of the parties, the act is voidable instead (Article 3:40(2) BW). Consumer protection rules and the rules on general terms and conditions are the most common examples. When you draft a written agreement, check each clause against these limits.
What do reasonableness and fairness mean?
Reasonableness and fairness (redelijkheid en billijkheid) are the Dutch equivalent of what other systems call good faith. Under Article 6:248 BW they work in two directions. They add obligations the parties never wrote down, and they set aside a clause where applying it would be unacceptable by standards of reasonableness and fairness.
In practice, reasonableness and fairness can mean that a party must:
Share information the other side clearly needs, for example before signing
Take the other party’s legitimate interests into account
Refrain from relying on a technicality in a way that is plainly unfair
Cooperate in the performance of the contract
Limit its own loss where it reasonably can
Courts apply the corrective function with restraint. The test in Article 6:248(2) BW is whether a clause is “unacceptable”, which is a high bar. A clause that is merely unfavourable to you will normally stand. This is why careful drafting matters more than hoping a court will correct a bad bargain afterwards.
How binding is a contract, and when can it be changed or ended?
A contract binds the parties as agreed, and you can enforce it in court. One party cannot change or end it on its own unless the contract or the law gives that right. If the other party does not perform, you can claim performance, damages or termination, as discussed below.
A contract can be changed or ended in the following situations:
Termination for a failure in performance of sufficient weight (Article 6:265 BW)
Amendment or termination by the court because of unforeseen circumstances (Article 6:258 BW)
Annulment because consent was defective, for example through mistake or fraud
Mutual agreement between the parties, or notice of termination where the contract or the law allows it
Each route has its own conditions. Termination for breach and annulment for mistake are separate remedies with different consequences, so it pays to choose the right one before you send a letter.
What makes a contract valid?
A valid Dutch contract needs offer and acceptance between parties who have capacity and whose consent is free of defects, and a content that is not contrary to law, good morals or public order. There is no general requirement of writing or of consideration.
How do offer and acceptance work?
A contract is formed when an offer is accepted (Article 6:217 BW). An offer is a proposal that is specific enough that a simple “yes” creates a contract. The acceptance must match the offer. If the reply adds or changes terms, it may not be an acceptance at all, but a new offer.
Offer and acceptance can be made orally, in writing, by email or through conduct, such as starting to deliver. The real question in many disputes is whether the parties had already agreed on the essential points, or were still negotiating. That depends on the statements and conduct of both sides, read as the other party could reasonably understand them.
What about capacity and defects of consent?
Each party must have legal capacity, and its consent must be given freely and on a correct understanding. If not, the contract may be voidable.
Minors and adults placed under guardianship (curatele) have restricted capacity. A contract they conclude without the required consent of their legal representative may be challenged. For companies, the question is usually whether the person who signed was authorised to represent the company.
Consent can also be defective. Dutch law recognises the following grounds for annulment:
Mistake (dwaling): you would not have concluded the contract had you known the true facts, and the mistake is caused by the other party’s information, by its failure to inform you, or by a shared wrong assumption (Article 6:228 BW)
Fraud (bedrog): deliberate deception to induce the contract (Article 3:44 BW)
Threat (bedreiging): unlawful pressure to obtain consent (Article 3:44 BW)
Abuse of circumstances (misbruik van omstandigheden): the other party exploited your dependency, emergency or inexperience (Article 3:44 BW)
A mistake about future developments, or a mistake that should remain at your own risk, does not justify annulment under Article 6:228 BW.
Is consideration required, and when is a contract unlawful?
Dutch law has no doctrine of consideration. That is a common law concept. A promise can bind you even if you receive nothing in return, as with a gift. What matters is that the parties intended to be bound and that the obligations are sufficiently determinable.
The content of a contract must also be lawful. Under Article 3:40 BW a contract is void, or in some cases voidable, if it:
Conflicts with good morals or public order by its content or purpose
Violates a mandatory statutory provision
Was designed to evade a mandatory rule
Serves an unlawful purpose, such as a cartel agreement or an agreement to commit a crime
Whether the consequence is nullity or voidability depends on the rule that is violated. If a rule only protects one party, the contract is usually voidable at that party’s option.
The table below summarises the requirements for a valid contract under Dutch law.
| Element | What Dutch law requires |
| Offer and acceptance | A sufficiently specific offer and a matching acceptance; oral, written, digital or by conduct (Articles 6:217 and 3:37 BW). |
| Capacity | Parties must have legal capacity; minors and persons under guardianship need their representative’s consent. |
| Free and informed consent | No mistake, fraud, threat or abuse of circumstances; otherwise the contract may be annulled (Articles 6:228 and 3:44 BW). |
| Consideration | Not required. A gratuitous promise can be binding. |
| Lawful content | Not contrary to mandatory law, good morals or public order (Article 3:40 BW). |
Which contract problems arise most in practice?
Most disputes come down to three questions: what does the contract mean, what can you do if the other side does not perform, and who bears the risk of events nobody foresaw.
How do Dutch courts interpret a contract?
Not by the words alone. Since the Haviltex judgment of the Supreme Court (Hoge Raad 13 March 1981, ECLI:NL:HR:1981:AG4158), the question is what the parties could reasonably understand each clause to mean in the circumstances and what they could reasonably expect from each other.
The court looks at the text, but also at the negotiations, the parties’ expertise, whether they had legal advice and how they behaved after signing. In commercial contracts between professional parties, the ordinary meaning of the words often carries great weight, but it is not decisive on its own.
Interpretation disputes typically arise from:
Inconsistent terms used for the same thing
Vague descriptions of what must be delivered
Missing or unclear deadlines
Situations the contract does not address
Technical terms that each party understands differently
A clear definitions clause and a record of what was discussed during negotiations reduce this risk.
What can you do when the other party does not perform?
You can demand performance, suspend your own performance, terminate and claim damages, often in combination. Most of these remedies first require that the other party is in default.
A failure in performance (tekortkoming) can take several forms:
No performance at all
Partial performance
Late performance
Performance below the agreed quality
Breach of an obligation not to do something, such as a non-compete
Default usually arises through a written notice of default that gives a reasonable period to perform (Article 6:82 BW). Under Article 6:83 BW, default arises without notice if a fixed deadline for performance passes, if the obligation is to pay compensation for an unlawful act, or if the other party tells you it will not perform.
The remedies are then:
Performance: you ask the court to order the other party to perform, if necessary with a penalty for non-compliance
Suspension: you withhold your own performance until the other party performs
Termination: under Article 6:265 BW, unless the failure is too minor to justify it; where performance is still possible, the other party must first be in default
Damages: under Article 6:74 BW, if the failure is attributable to the other party
A failure is not attributable if it is not the debtor’s fault and is not for its account under the law, the contract or generally accepted views (Article 6:75 BW). That is force majeure (overmacht). Your damages can also be reduced if you contributed to the loss yourself, for example by failing to limit it.
The table below links each type of failure to the remedies that usually fit.
| Type of failure | Description | Usual remedies |
| No performance | Nothing delivered or paid | Performance, termination, damages |
| Partial performance | Only part of the obligations met | Performance of the rest, partial termination, damages |
| Late performance | Performed after the deadline | Damages for delay, termination if time was essential |
| Defective performance | Delivered, but below the agreed quality | Repair or replacement, price reduction through partial termination, damages |
| Serious breach | Failure that undermines the purpose of the contract | Termination, damages, suspension |
Who bears the risk of unforeseen circumstances?
In principle, each party bears its own risk, and a contract stays binding even if it becomes less favourable. Only exceptionally can the court amend or terminate a contract because of unforeseen circumstances (onvoorziene omstandigheden) under Article 6:258 BW.
The court can do so only if the circumstances are of such a nature that the other party cannot reasonably expect the contract to remain unchanged. Relief is excluded if the circumstances are for the account of the party invoking them, given the nature of the contract or generally accepted views. Courts apply this provision restrictively, so you should not rely on it.
It is better to allocate risk in the contract itself. Points to address include:
A force majeure clause that defines which events count and what happens then
Clear performance standards and deadlines
A renegotiation or price adjustment mechanism for substantial changes
Limits on liability, set at a level a court is likely to uphold
A fair split of foreseeable financial risks, such as raw material prices or exchange rates
A contract that answers these questions in advance leaves less room for discussion when something goes wrong.
How do you draft and manage contracts well?
Write down what you agreed, make sure your general terms and conditions actually apply, and agree in advance what happens when things go wrong. Good contract management then means checking performance and deadlines during the term.
How do you make general terms and conditions stick?
General terms and conditions (algemene voorwaarden) only protect you if they apply and if each clause survives scrutiny. Two rules from Book 6 BW matter most.
First, a clause in general terms is voidable if it is unreasonably burdensome for the other party, given the nature and content of the contract, the way the terms were agreed, the parties’ interests and the other circumstances (Article 6:233(a) BW). Second, a clause is voidable if you did not give the other party a reasonable opportunity to take note of the terms (Article 6:233(b) BW).
Under Article 6:234 BW you meet that information duty mainly by providing the terms before or at the conclusion of the contract. For consumers, the law also contains lists of clauses that are deemed or presumed to be unreasonably burdensome. Practical steps:
Refer to your terms in the quotation or offer, not only on the invoice
Attach the terms or send them with the offer, including by email
Have the other party confirm in writing that it accepts them
Expressly reject the other party’s terms if you do not want them to apply
Check whether your limitation of liability is reasonable for this type of contract
Digital tools can help. You can conclude contracts electronically, store all versions in one place and track deadlines automatically. These tools do not replace legal review, but they reduce errors and missed dates.
Which clauses manage risk?
The clauses that matter most in a dispute are the ones parties tend to rush. Give them proper attention when you draft.
Clauses that manage risk include:
A force majeure clause with a clear list of events
A limitation of liability and an exclusion of indirect loss
Clear specifications, acceptance procedures and performance indicators
A dispute resolution clause: court, arbitration or mediation first
A choice of law and choice of forum clause for international contracts
A procedure for periodic review and renegotiation
Balance precision with flexibility. A contract that fixes every detail can become unworkable when the market changes. A contract that leaves too much open invites interpretation disputes.
How do sustainability and supply chain clauses fit in?
Many companies now ask their suppliers for contractual commitments on sustainability and responsible supply chains. These clauses are binding like any other clause, so they need the same precision.
Common clauses include:
A supplier code of conduct that forms part of the contract
Obligations to provide information about the origin of goods
Audit rights for the customer
Targets for emissions or the use of materials
Consequences of a breach, such as a remediation plan or termination
Agreements on who bears the cost of compliance
Make sure each obligation is measurable and states what happens if it is not met. A vague commitment to “act sustainably” is difficult to enforce and can itself become a source of dispute.
In summary
- A Dutch contract is formed by offer and acceptance and generally needs no particular form (Articles 6:217 and 3:37 BW); there is no requirement of consideration.
- Reasonableness and fairness can add obligations and, in exceptional cases, set aside a clause (Article 6:248 BW).
- Courts interpret a contract by what the parties could reasonably expect of each other, not by the text alone (Haviltex, ECLI:NL:HR:1981:AG4158).
- Before you terminate or claim damages, check whether the other party is in default; usually that requires a written notice of default (Articles 6:82 and 6:83 BW).
- Allocate risk in the contract itself: the court only exceptionally intervenes for unforeseen circumstances (Article 6:258 BW).
Frequently asked questions
Is an oral contract binding in the Netherlands?
Yes. Under Article 3:37 BW a declaration can be made in any form, so an oral agreement is as binding as a written one, unless the law requires a specific form. The difficulty is proof: without a written record, it can be hard to show what was agreed.
What is required for a valid contract under Dutch law?
An offer and a matching acceptance, parties with legal capacity, consent free of mistake, fraud, threat or abuse of circumstances, and lawful content. Unlike common law systems, Dutch law does not require consideration.
What can I do if the other party breaches the contract?
You can demand performance, suspend your own performance, terminate the contract (Article 6:265 BW) and claim damages (Article 6:74 BW). In most cases you first send a written notice of default that gives the other party a reasonable period to perform.
Can a contract be changed if circumstances change?
Only exceptionally. A court can amend or terminate a contract for unforeseen circumstances under Article 6:258 BW if the other party cannot reasonably expect the contract to remain unchanged. Courts apply this restrictively, so it is better to include a force majeure or renegotiation clause.
Related reading
- The letter of intent explained
- What is an NDA?
- The meaning of a bill of lading
- The rental contract for an indefinite period
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 corporate lawyer page.
