What is Notice of Default?

Default is the legal trigger for the most significant contractual remedies: claims for damages, contract termination, and enforcement of a penalty clause. However, default does not arise automatically upon a breach — in most civil law jurisdictions, including the Netherlands, a formal notice of default is first required.

A notice of default puts the debtor on formal notice that they have failed to perform and gives them a last reasonable period to comply. Only when that period expires without performance does the debtor enter default and the creditor's remedies become available.

There are situations in which default arises without a notice — known as automatic default. These include: failure to meet a fixed contractual deadline (where the contract specifies that performance must occur on a particular date), situations where the debtor has made clear that performance will not occur, and cases where statute provides that no notice is required.

A legally effective notice of default must include a clear description of the breach, a specific remedy deadline (not "as soon as possible" but a defined date or number of days), and a statement of the consequences if compliance is not achieved. Missing any element can render the notice legally ineffective.

In practice, notices of default are often sent too late or drafted too vaguely. Too late means legal remedies start accruing later than necessary. Too vague means the debtor cannot establish exactly what is required of them. Send a notice of default at the first serious breach — not after months of informal discussion.

The notice of default is the formal bridge between a breach and its legal consequences. Without a valid notice, you typically have no right to damages or termination — even when the breach is obvious and entirely attributable to the other party.

For SMBs, the practical message is direct: the moment a supplier or customer commits a serious breach, send a written notice of default immediately. It starts the legal clock, formally documents the breach, and opens the door to further remedies if performance does not follow.