Letters for your clients. From engagement letter to notice of default.
A client does not pay? Choose the step: reminder, fourteen-day letter or notice of default. Fill in the invoices. We calculate the interest and the collection costs, under the rules for businesses or private clients. Also for an engagement letter and a termination.
Choose a letterYour terms first?Business or private client
The rules differ. The law in brackets.
| Default | If there is a fixed payment term, the client is in default after the due date, without a reminder (art. 6:83(a) Dutch Civil Code). |
|---|---|
| Costs with a business | At least €40, from the day after the due date, without a reminder (art. 6:96(4) Dutch Civil Code). |
| Costs with a private client | Only after a fourteen-day letter with the consequences and the amount. All invoices in one letter (art. 6:96(6) and (7) Dutch Civil Code). |
| Scale | 15% on the first €2,500, 10% on the next €2,500, 5% on the next €5,000, 1% on the next €190,000, 0.5% above. At least €40, at most €6,775 (Decree on extrajudicial collection costs). |
| Interest | Commercial interest 10.4% since 1 July 2026. For private clients 4% since 1 January 2026 (Dutch government). |
| Payment term | Without agreement 30 days. A large company pays small businesses within 30 days (art. 6:119a Dutch Civil Code). |
Make a letter
What you enter stays in your browser. We store nothing and send nothing. Each document has this line at the top: Alvelion model, as of 31 October 2026. Have it checked before you sign.
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Frequently asked questions
Only with a private client, before you may charge collection costs. With a business the €40 is already due after the due date. A reminder is then polite, but not required.
Per invoice: the amount times the interest rate, times the number of days since the due date, divided by 365. The generator does this up to the date of the letter. Let your client know that you charge interest.
Only if you cannot deduct the VAT yourself, for example with the small business scheme, and you state this explicitly in the letter. Then 21% is added.
Would you rather we handled it?
We handle the bookkeeping and tax returns for freelancers and DGAs. Also invoices, VAT and a check of your contracts by an adviser. Tell us what you do and for whom. You'll hear back within one working day.
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