A verbal agreement in commercial transactions is binding under Dutch law. Contracts are formed by offer and acceptance (article 6:217 of the Dutch Civil Code) and a declaration may be made in any form, so a spoken yes creates the same obligations as a signed document unless the law prescribes a written form for that particular contract. The weakness of a handshake deal is therefore not its validity but its provability: the party invoking the agreement carries the burden of proof, and without a record it has to reconstruct the deal from emails, invoices and conduct.
Is a verbal agreement binding in commercial transactions?
Yes. Dutch contract law rests on consensualism: what creates a contract is agreement between the parties, not the form in which that agreement is expressed. Article 3:37 of the Civil Code states the point directly, providing that unless the law says otherwise a declaration may be made in any form and may even be implied by conduct. There is no general requirement of writing, no requirement of a signature and no requirement of consideration of the kind found in other legal systems.
The practical consequence is that a great deal of Dutch commercial activity runs on contracts nobody ever signed. A purchase order confirmed by telephone, an extension of a delivery term agreed in a corridor, a price adjustment settled in a video call: all of these are contracts or amendments to contracts, and all of them bind the parties. A court asked to rule on them will not refuse to do so for want of paper.
What the absence of paper does change is the position of the party who wants to rely on the deal. In Dutch civil proceedings the party invoking the legal consequences of a set of facts has to prove those facts. If a supplier says a fixed price was agreed and the buyer says the price was indicative, it is the supplier that has to convince the court, and it has to do so about the existence of the contract and about each of the terms it wants to enforce. A contract that is valid but unprovable is, in commercial terms, not much of an asset.
There is one further layer that gets overlooked. Even where a spoken agreement is fully provable, the parties often have not discussed the things that later cause the dispute: the delivery date, the consequences of late payment, whose general terms apply, which court decides, what happens if volumes fall away. Dutch law fills some of those gaps with default rules and with the standard of reasonableness and fairness, but the gap-filling result is rarely the deal either party had in mind.
When the contract is concluded, and by whom
A contract comes into being at the moment an offer is accepted. Two questions decide whether that moment has arrived: was there an offer at all, and did the acceptance reach the other side.
Offer, acceptance and the moment of formation
An offer is a proposal that is complete enough that a simple yes turns it into a contract. A statement that a party might be interested, or that it will look into the possibility, is an invitation to negotiate rather than an offer, and accepting it produces nothing. The dividing line is what the other party could reasonably infer from the words used and the circumstances, which is the test Dutch law applies to declarations generally: a party is bound by the meaning the other side could justifiably attach to what it said.
An acceptance takes effect when it reaches the person who made the offer, not when it is spoken or sent, so a message left unread on a voicemail can still conclude a contract because it has arrived. An acceptance that departs from the offer on any point counts as a rejection combined with a new offer, unless the deviation is minor and the original offeror does not object without delay. Until acceptance the offer can normally be revoked, but not if it states that it is irrevocable or sets a period for acceptance.
Silence is generally not acceptance. In an ongoing commercial relationship, however, a party that receives a written confirmation of a telephone conversation and lets it pass without protest may find that it has accepted the terms in it, because in that setting the other party was entitled to expect a reaction. This is precisely why the confirmation email is such a powerful instrument, and why an incorrect confirmation must be corrected quickly.
Whether the person you spoke to could bind the company
A verbal deal is only worth as much as the authority of the person who made it. Companies act through their directors and through people holding a power of attorney. For a private limited company (BV) and a public limited company (NV), the Civil Code gives the management board the power of representation, and it allows the articles of association to restrict which directors may act jointly or alone. Those arrangements, and any registered powers of attorney, are visible in the trade register kept by the Chamber of Commerce (Kamer van Koophandel), which is free to consult and takes about a minute.
Where the person had no authority, the contract does not bind the company unless the company created the appearance that it did. That doctrine of apparent authority is the escape route for a counterparty acting in good faith, but it requires circumstances attributable to the company itself, such as a job title, a previous course of dealing or an email signature that presents the person as authorised. A purchaser who negotiates a substantial verbal deal with a junior employee, without checking anything, has a weak case.
The practical rule for commercial practice is simple: the larger the deal, the more the identity and authority of the person on the other side of the table deserve a moment of attention before, not after, the handshake.
What Dutch law still requires in writing
The freedom of form has exceptions, and they matter because in those cases a spoken agreement is not merely hard to prove but legally ineffective. The exceptions cluster around three concerns: protecting a weaker party, forcing a moment of reflection before a far-reaching commitment, and creating certainty about rights that affect third parties.
The purchase of a home by a private buyer must be recorded in writing under article 7:2 of the Civil Code, and the buyer then has a three-day cooling-off period in which the purchase can be undone without giving reasons. That provision protects consumers, so it does not apply where a company buys business premises; a verbal agreement on a commercial property can bind, although the transfer of ownership itself always requires a notarial deed and registration.
A non-compete clause is valid only if it has been agreed in writing with an adult employee, under article 7:653 of the Civil Code, and in a fixed-term contract it also needs a written statement of the compelling business interests that justify it. A clause discussed at the job interview and never written down has no effect at all. The same written-form logic applies to hire purchase, to a franchise agreement under the Franchise Act that has been in force since 1 January 2021, and to an arbitration agreement, which article 1021 of the Code of Civil Procedure requires to be proved by a written document. The assignment of a claim to a new creditor needs a deed under article 3:94 of the Civil Code, and a private individual who stands surety for a business debt can only be held to that undertaking on the basis of a written document.
Where writing is required and what happens without it
| Agreement | Requirement | Effect of a purely verbal deal |
|---|---|---|
| Purchase of a home by a private buyer | Written contract, followed by a three-day cooling-off period (article 7:2 BW). | No enforceable purchase; either party can walk away. |
| Non-compete clause | Agreed in writing with an adult employee (article 7:653 BW). | The clause has no effect; the employee is free to compete. |
| Franchise agreement | Concluded in writing under the Franchise Act. | The statutory franchise regime cannot be relied on as agreed. |
| Arbitration clause | Proved by a written document (article 1021 Rv). | No valid arbitration; the ordinary courts have jurisdiction. |
| Assignment of a claim | A deed, plus notice to the debtor (article 3:94 BW). | The claim never transfers; the original creditor remains entitled. |
For cross-border trade the rule is, if anything, even more liberal. The Vienna Sales Convention, which applies by default to international sales of goods between businesses in contracting states including the Netherlands, expressly provides that a contract of sale need not be concluded in or evidenced by writing and may be proved by any means. Businesses that want the security of a written contract in international dealings have to create it themselves, or exclude the Convention and choose a national law that demands more.
Proving a verbal agreement
The burden of proof rests on the party that relies on the legal consequences of the facts it alleges, which is the rule in article 150 of the Code of Civil Procedure. In a dispute about a verbal agreement that is almost always the claimant: the supplier chasing payment, the contractor claiming extra work, the intermediary claiming its commission.
The good news is that Dutch procedure does not restrict how that proof may be delivered. Article 152 of the Code of Civil Procedure allows evidence by all means, and leaves the weight of the evidence to the court. There is no rule excluding oral evidence about oral contracts and no requirement of a written note to start with. What the court wants is a coherent account supported by material that was not created for the litigation.
What actually convinces a court
Contemporaneous documents beat recollection. A confirmation email sent the same afternoon, a calendar entry, a quotation with a handwritten adjustment, a chat message about the delivery week, a project plan circulated after the meeting: each of these fixes a detail at a moment when nobody was in dispute. Ranked roughly by strength, the material that decides these cases is:
- written confirmations of the conversation that the other party received and did not contradict;
- invoices matching the alleged terms, particularly where they were paid in whole or in part;
- performance by both sides that only makes sense if the alleged agreement existed;
- internal documents of the other party, such as an order entry or a budget, which can be demanded in proceedings where they are specifically identified;
- witness evidence from people who were present, heard under oath if the court orders a witness examination.
Witness evidence is genuinely useful but it is the last line rather than the first. Memory is reconstructive, and a witness who is an employee of the party calling them will be examined on exactly that point. A single contemporaneous email usually carries more weight than two friendly witnesses three years later.
Recording a conversation is lawful in the Netherlands when you take part in it yourself, and a recording made that way can be used as evidence. It is not a neutral step: it damages trust if it comes out, it may conflict with contractual confidentiality, and processing the recording afterwards still has to comply with data protection rules. As a routine practice it is a poor substitute for simply writing down what was agreed.
What was actually agreed: interpretation and general terms
Proving that a contract exists is only half the exercise. The second half is establishing what it says, and here Dutch law is markedly less literal than many international counterparties expect.
The Haviltex standard
Since the Haviltex judgment of the Hoge Raad in 1981, the meaning of a contract is not determined by the words alone but by the meaning the parties could reasonably attribute to them in the circumstances, and by what they could reasonably expect from each other. The court looks at the negotiations, the position and expertise of the parties, market practice and the way the parties behaved after the deal. For a verbal agreement this cuts both ways: there are no words to fall back on, so conduct and correspondence become the primary material, and a party whose behaviour was consistently at odds with the deal it now claims has a difficult time.
Two default rules quietly do a lot of work where the parties never discussed a point. Reasonableness and fairness supplement the contract and can, in exceptional cases, set aside a term whose application would be unacceptable. And a buyer or client who discovers a defect must complain within a reasonable time of discovering it, or loses the right to rely on it; in commercial dealings that period is short, and letting an unsatisfactory delivery pass in silence for months is a familiar way of losing an otherwise good claim.
General terms and the first-shot rule
Most commercial parties intend their own general terms and conditions to apply, and most verbal deals are struck without either side mentioning them. Dutch law resolves the resulting collision with a first-shot rule in article 6:225 of the Civil Code: where an offer and an acceptance each refer to different sets of general terms, the second reference has no effect unless it expressly rejects the terms referred to in the offer. A rejection buried in the small print of the second set is not enough; it has to be explicit.
Applicability is only the first hurdle. General terms bind the other party only if that party was given a genuine opportunity to take note of them before or at the time of contracting, which in practice means handing them over or sending them, and a reference to a website is not automatically sufficient in a business-to-business setting. A verbal agreement in which nobody mentioned any general terms, followed by an invoice printed with the terms on the back, usually results in terms that do not apply at all. Our page on the work of a contract lawyer sets out how these documents are put in order before rather than after a dispute.
When talks collapse before there is a deal
Commercial negotiations sometimes stop just short of agreement, and the party that has already invested wants to know whether the other side may simply walk away. As a starting point it may: freedom of contract includes the freedom not to conclude one. The Hoge Raad has set a strict standard for departing from that starting point, holding that breaking off negotiations is only unacceptable in exceptional circumstances, in particular where the other party could justifiably expect that some contract would come about, or where other circumstances make the break-off unacceptable.
Where that threshold is crossed, the usual remedy is compensation for costs incurred, and only rarely for the profit that the failed contract would have produced. The practical lesson is the mirror image of the one about handshakes: if you are being asked to invest in a deal that is not yet closed, record what has been agreed so far, record explicitly what has not, and put the cost of preparatory work in writing before you incur it.
What to do when a verbal agreement is broken
The first step is almost never litigation. It is a written notice of default (ingebrekestelling) under article 6:82 of the Civil Code: a letter or email that states what was agreed, what has not been performed, and gives a reasonable period to put it right. Without that notice the debtor is generally not in default, and without default there is no claim to damages and no right to dissolve the contract. The notice does something else that is valuable in a verbal-agreement dispute: it forces the other party to respond to a written version of the deal, and its answer, or its silence, becomes evidence.
A notice is not needed in every case. Where a deadline agreed between the parties has passed, where the debtor has already stated that it will not perform, or where performance has become permanently impossible, default arises by operation of law. If in doubt, send the notice anyway; there is no penalty for doing so and there is a real penalty for skipping it.
Damages, dissolution and deadlines
Once the debtor is in default, article 6:74 of the Civil Code entitles the creditor to compensation for the loss caused by the breach. That loss can include lost profit, but only to the extent it can be attributed to the breach and substantiated with figures; in a verbal-agreement case this is where claims are usually trimmed, because the agreed volume or margin was never fixed on paper. Reasonable costs of establishing the loss and of obtaining payment out of court can be claimed alongside it.
The alternative to enforcing the deal is ending it. Article 6:265 of the Civil Code allows dissolution for any failure to perform, unless the failure is too minor to justify it, and dissolution creates obligations to reverse what has already been performed. Whether to claim performance, damages or dissolution is a strategic choice that depends on what you still want from the other side and on what you can prove.
Deadlines are unforgiving. A claim to performance of a contractual obligation is time-barred five years after the day on which the claim became due, under article 3:307 of the Civil Code, and a written reminder that unambiguously reserves the right to performance interrupts that period under article 3:317. Long-running commercial relationships in which invoices are disputed and then left alone are the classic way to lose a claim by simply waiting.
Where the amount at stake is below the statutory ceiling for the subdistrict court (kantonrechter), proceedings can be brought without a lawyer and are relatively quick; our overview of small claims in the Netherlands explains that route. Above the ceiling the case goes to the district court and representation by a lawyer is compulsory. Mediation is worth considering where the commercial relationship still has value, and arbitration only where the parties validly agreed to it in writing.
Verbal changes to a written contract
The most frequent verbal-agreement dispute in commercial practice is not about a contract that was never written down at all, but about a written contract that was verbally changed along the way. A delivery schedule is relaxed by telephone, a discount is granted for one season, a scope of work grows meeting by meeting, and two years later the parties disagree about which version applies.
Because Dutch law is free of form requirements, a verbal amendment to a written contract is in principle as valid as the contract itself. Many commercial contracts try to close that door with a clause stating that amendments are only valid if agreed in writing and signed by both parties. Such a clause is useful and it shifts the argument, but it is not an absolute barrier: whether a party may invoke it depends on the circumstances, and a party that acted on the verbal change for a long period, accepted the benefit of it and never once referred to the clause may find that reliance on it is unacceptable. The safer reading is that the clause makes a verbal amendment harder to prove and easier to resist, not impossible.
Additional work is the same problem in a different guise. In construction and in professional services, extra work agreed on site is a standing source of litigation, and the contractor that carried it out without written instruction has to prove both that it was requested and that a price or a pricing basis was agreed. A short email before starting the extra work, rather than an invoice after finishing it, is the difference between a claim and an argument.
The same discipline applies to termination. A contract ended verbally can be validly ended, but the party that says it gave notice has to prove that it did, that the notice reached the other side and when. Where a notice period runs from receipt, an unrecorded telephone call is precisely the kind of evidence that fails at the point it is needed most.
How to keep the speed and lose the risk
Commercial life will not wait for a signed contract, and it does not have to. What follows is the minimum discipline that turns a verbal deal into something defensible without slowing the business down.
Confirm the same day. A short email that sets out the scope, the price or the pricing mechanism, the delivery or completion date, the payment term and the applicability of your general terms is enough. Ask for a one-line confirmation, and treat a reply as part of the contract file. If the other party corrects the summary, you have learned something valuable at the cheapest possible moment.
Attach your general terms to that email rather than referring to them, and do the same on the first order in any new relationship. Keep the record of what was sent, because the question in a dispute is not whether the terms exist but whether the other side had a real chance to read them.
Write invoices that describe the work rather than the total, referring to the date of the agreement and the deliverables, and follow up on unpaid invoices in writing. Keep a note of every call that changes something, with the date and the participants. Where a deal is amended verbally, confirm the amendment in the same way as the original; disputes about variations are at least as common as disputes about the original bargain.
Finally, keep the written form where the law demands it. A non-compete clause, a franchise agreement, an arbitration clause or an assignment of receivables that exists only in conversation is not a weak contract but no contract, and no amount of subsequent documentation repairs it. Our corporate law guides set out the documents most Dutch businesses need to have in order before they start negotiating.
Frequently asked questions
A few practical questions come up in nearly every dispute about a spoken deal.
What evidence is strongest for proving a verbal Agreement?
While having a witness is certainly helpful, the strongest evidence is almost always something in writing that was created after the verbal agreement was made. A simple follow-up email summarising the key terms—price, deadlines, and what needs to be delivered—is incredibly powerful. This is especially true if the other party replies with a confirmation or, just as importantly, simply starts the work without objecting to your summary.
Invoices that spell out the agreed-upon services and are subsequently paid are also solid proof. These documents create a paper trail that clearly shows both sides understood and accepted the terms, lifting the dispute out of a messy "he said, she said" situation.
What is the first thing I should do if a verbal Agreement is disputed?
The very first step is to get everything in writing. Send a formal but professional email or letter that lays out your understanding of the original agreement. You should clearly state where you believe the other party has failed to hold up their end of the bargain. This action immediately creates a documented record of the dispute.
If that doesn't fix the problem, your next move under Dutch law is often to send a notice of default (ingebrekestelling). Think of this as a final written warning. It gives the other party one last chance and a reasonable timeframe to fulfil their obligations before you escalate things by pursuing legal action or claiming damages.
Are text messages or WhatsApp chats legally binding?
Yes, absolutely. In the Netherlands, courts recognise text messages, WhatsApp chats, and other digital communications as valid evidence. They can be used to prove that an agreement exists and to confirm its specific terms.
A WhatsApp conversation where an offer is made and then clearly accepted can be enough to form a binding contract on its own. It’s a good habit to always save these digital conversations, as they could be the crucial piece of evidence you need if a verbal deal goes sideways.
How long is a verbal Agreement valid in the Netherlands?
A verbal agreement doesn’t just expire because it wasn't written down. It remains valid and enforceable for the same amount of time as a written contract would. The standard statutory limitation period for most contractual claims in the Netherlands is five years. This clock starts ticking the day after the claim becomes due and payable, meaning you generally have up to five years to take legal action if the agreement is broken.
Law & More advises Dutch and international businesses on contract formation, general terms and conditions, and disputes about what was agreed. If a counterparty is denying a deal you know was made, or you want your contracting process put on a footing that survives a dispute, we are glad to look at it with you.
