How to Write a Demand Letter Under EU Law

Going to court is expensive. Even a small cross-border dispute can eat up hundreds of euros in filing fees, translations, and legal advice – before you've seen a judge. A well‑crafted demand letter often resolves the issue without any of that. It's your cheapest, fastest first step.

A demand letter is simply a formal request for payment or action, sent before you escalate. Under EU law, it can also serve as a mandatory notice (e.g., "sommation" or "ingebrekestelling") that starts a legal clock. This guide walks you through writing one that works – across borders – without needing a lawyer.

Why Demand Letters Work

Three reasons:

Legal basis – Many EU jurisdictions require a written demand to start interest running, to satisfy a contractual notice period, or to interrupt a statute of limitations. Without it, you may lose your right to claim late fees or even to sue.
Psychological effect – A clear, professional letter shows the other party you're serious. Most debtors settle once they realise you have a documented claim and a deadline.
Documentary trail – If the dispute goes to mediation or court, your demand letter proves you tried to resolve it first. Judges and mediators look favourably on parties who attempted an out‑of‑court solution.

Tip: Even if the debtor ignores your letter, you've created a timestamped record. That record can interrupt the statute of limitations in many EU countries. For example, under Spanish law (Art. 1973 CC) or French law (Art. 2241 CC), a formal demand can restart or pause the limitation clock. Always check your jurisdiction's specific rules.

EU Regulations by Jurisdiction

National rules vary. Below are key requirements for Belgium, the Netherlands, France, and Spain – four countries where Akordans users frequently operate.

Belgium (BE)

Formal notice ("ingebrekestelling" / "mise en demeure") is required before you can claim late‑payment interest or go to court.
Can be sent by registered letter (with proof of receipt) or by bailiff ("gerechtsdeurwaarder" / "huissier"). A simple email is not always sufficient unless the contract explicitly allows it.
Deadline: Usually 8–15 days after receipt of the formal notice.
Content: Must clearly state the amount, due date, and that you are putting the debtor in default.

Netherlands (NL)

Ingebrekestelling is mandatory under Dutch law (Art. 6:82 BW).
Must be in writing and give the debtor a reasonable term to perform (typically 14 days).
Registered mail is strongly recommended, but a properly delivered email may suffice if the contract allows that form of communication.
Automatic right to damages starts only after the term set in the letter has expired.

France (FR)

Mise en demeure is required before claiming penalties or interest (Art. 1231‑6 Code civil).
Must be sent by registered letter with A/R (accusé de réception) or by bailiff.
Deadline: Usually 8 days, but you can set a longer period in the letter.
Warning: If you demand payment within less than 15 days, the debtor may argue it's insufficient unless your contract says otherwise.

Spain (ES)

Requerimiento de pago is the standard pre‑judicial demand.
Not required by law for ordinary debt, but highly recommended because it interrupts the limitation period (5 years for contractual claims, 3 years for tort in some cases).
Burofax (certified fax/letter) or notary notification is the safest proof. Ordinary email may be challenged.
Deadline: Typically 10–15 days, but you can choose a shorter or longer period.

Cross‑border note: If your debtor is in a different EU country, you can send the demand letter in the language of the contract (often English or the debtor's language). But for enforceability, a version in the debtor's national language is safer. See FAQ below.

Template + Checklist

Below is a multi‑jurisdiction template. Adapt it to your specific country and replace placeholders marked with [ ].

Generic Template

# DEMAND LETTER

**Date:** [DD/MM/YYYY]

**To:** [Debtor Name & Address]  
**From:** [Your Name & Address]

**Reference:** [Invoice/Contract No. or Description]

---

Dear [Debtor Name],

We refer to our agreement dated [Date] regarding [product/service]. According to our records, the amount of **[€ Amount]** (the "Debt") remains unpaid. The due date was [DD/MM/YYYY].

We hereby formally demand payment of the Debt within **[X] days** from receipt of this letter (the "Demand Period").

If the full amount is not received by [DD/MM/YYYY], we will take the following steps without further notice:

- Charge late‑payment interest at the statutory rate of [e.g., 8% + ECB rate for commercial transactions under Directive 2011/7/EU].
- Add any reasonable recovery costs (e.g., collection fees, legal fees, or court costs).
- Initiate legal proceedings in the competent court.

**Payment details:**

- Bank: [Name]  
- IBAN: [XX]  
- BIC/SWIFT: [XX]  
- Reference: [Invoice no.]

We trust this will resolve the matter amicably. Should you have any queries, please contact us within the Demand Period.

Yours sincerely,

[Your Name / Company Name]

Jurisdiction‑Specific Additions

Add these paragraphs if sending to a particular country:

BE: "This letter serves as a formal mise en demeure / ingebrekestelling under articles 1253 and 1236 of the Belgian Civil Code."
NL: "This is a written ingebrekestelling as meant in Article 6:82 of the Dutch Civil Code."
FR: "This letter constitutes a mise en demeure under Article 1231‑6 of the French Code civil."
ES: "This is a requerimiento de pago for the purpose of interrupting the limitation period under Article 1973 of the Spanish Civil Code."

Checklist – Must‑Include Elements

Date – the day you send the letter (postmark or delivery date matters).
Claimant identification – full name, address, contact details.
Debtor identification – full name, address (and, if possible, email/phone).
Amount owed – clearly state the principal, any VAT, and any already‑incurred late fees.
Legal basis – which contract, invoice, or law gives you the right to demand payment?
Deadline for response – a specific date, not "within 2 weeks".
Consequences – what happens if ignored (interest, costs, legal action).
Proof of receipt – registered mail, courier tracking, or burofax receipt.
Language – match the contract language or include a translation in the debtor's official language.

Common Mistakes

Even a well‑written demand letter can backfire if you make these errors:

Vague descriptions – "the amount due" without an invoice number or breakdown. The debtor can genuinely misunderstand what they owe and ignore your letter.
Unrealistic deadlines – Demanding payment within 3 days when the law (or good business practice) expects 14 days may be considered abusive. In some jurisdictions, a too‑short deadline invalidates the formal notice.
Missing jurisdiction clues – Not stating whether the letter is a formal notice under Belgian, Dutch, French, or Spanish law. Without that, the debtor may argue they didn't realise the legal consequences.
Threatening language – Avoid phrases like "we will destroy your credit rating" or "we will seize your assets." Stick to factual consequences: "We will register a claim with the competent court." Aggressive language can be used against you in court as harassment.
No proof of delivery – Sending by regular mail or email without tracking. When the debtor claims they never received it, your letter has no legal effect.

Next Steps

If the debtor pays or responds within the deadline – good. You can close the case or negotiate a payment plan.

If they don't respond:

Settlement negotiation – Use the fact that you have a documented demand to propose mediation. Akordans offers low‑cost mediation across EU borders.
Mediation – Under the EU Mediation Directive (2008/52/EC), cross‑border mediation is encouraged. A successful mediation can result in a settlement agreement enforceable in all member states.
Enforcement – You can file a claim with your national small claims court (for claims under €5,000, use the European Small Claims Procedure, Regulation 861/2007). For larger amounts, consider the European Payment Order (Regulation 1896/2006) if the claim is undisputed.

Need a quick assessment? Akordans can review your situation and recommend the best next step for just €29 – a single, one‑time fee with no hidden costs. Start your case assessment.

FAQ

Can I send a demand letter in English if the debtor is in Spain?

Yes, but it's safer to send a bilingual version (English + Spanish). Under Spanish law, a document only in English may be challenged as "not properly understood". If your contract is in English, that helps, but accompany the English letter with a Spanish translation (even a simple one) to be safe.

What if the debtor doesn't respond?

In most EU countries, silence does not mean acceptance, but it does mean the deadline has passed. You can then move to formal proceedings. Keep your proof of delivery and a copy of the letter. The next step depends on the amount: for claims under €5,000, use the European Small Claims Procedure; for larger amounts, consult a lawyer or use Akordans' mediation.

Can I demand interest or penalties in my demand letter?

Yes, if your contract allows it or if the EU Late Payment Directive (2011/7/EU) applies. For B2B transactions, you can claim statutory interest (8% + ECB reference rate) and a fixed compensation of €40 for late payment. Mention this explicitly in your letter. Do not claim penalties that are not legally justified – that can be considered an unfair practice.

Is a demand letter required before going to court in all EU countries?

Not always. In Belgium, France, and the Netherlands, a formal notice is a prerequisite for interest and costs. In Spain, it is not mandatory for ordinary debts, but it interrupts the limitation period. If you skip the letter, you may still be able to sue, but you lose certain rights (like interest from the original due date). Best practice: send one anyway.

How long do I have to wait after sending the demand letter?

Check the deadline you set in the letter (usually 8–15 days). After that date passes without payment, you can proceed. Some jurisdictions require a "reasonable" time, which courts interpret as at least 8 days for a dormant debtor, 14 days for active negotiations. Keep records of the date of delivery and the deadline you gave.

This article is for informational purposes only and does not constitute legal advice. Laws and interpretations may vary depending on the specifics of your case. For personalised guidance, consider Akordans' case assessment service.