Thirty days is the outer limit, not the norm. And unlike refunds, default here does not start running by itself, except in three cases.
A retailer delivers without delay and in any event within thirty days of the sale being concluded, unless something else was agreed. If it fails to deliver, you must as a rule first set a reasonable deadline. After that it is in default and you can rescind and reclaim your money.
Article 7:9(4) of the Dutch Civil Code: in a consumer sale the seller delivers the goods without delay and in any event within thirty days of the contract being concluded. The parties may agree a different period.
Two things stand out. Without delay comes first: thirty days is the outer limit and not a default. And the period runs from the conclusion of the sale, so from your order, not from the moment the retailer decides to start processing it.
A retailer may agree a longer delivery time, for instance on a pre-order or a bespoke item. But that has to be an agreement: clearly communicated before you order, as part of the pre-contractual information required by article 6:230m(1). A delivery time that only surfaces after the order on a status page, or "8 to 12 weeks" in small print at the bottom of the terms, is not an agreed period.
Here lies the difference with refunds. Where a refund fails to arrive, default runs by operation of law. Where delivery fails, usually it does not. Article 7:19a(1) first requires a demand setting a reasonable period. If delivery still fails after that, the seller is in default.
Paragraph 2 provides three exceptions in which you can skip that step:
That third point is more usable than it looks. An order demonstrably intended for a birthday or a travel date, where you said so in advance, falls within it.
The statute names no figure. In files where the product is said to be in stock, we use seven days. For demonstrably bespoke items or international shipping it is longer. What matters is that the period is concrete, set in writing, and demonstrably expired afterwards. An email saying "please could you hurry" is not a notice of default.
If you rescind for non-delivery, article 7:19a(3) requires the seller to reimburse all payments received from you without delay. Not fourteen days, no processing period: without delay. That is a stricter standard than on withdrawal and in practice it is almost never met.
A recurring case: the retailer shows a dispatch confirmation and sometimes even a status of "delivered", but nothing has arrived. What matters then is who has to prove what. Delivery means putting the buyer in possession, article 7:9(2). Until the seller demonstrates that the parcel reached you, it has not delivered. A scan at a neighbour's or a photograph of a doorway is not automatically sufficient for that.
We put the retailer in default, rescind on your behalf and reclaim the full amount.