In Luxembourg, lending money to an individual remains free, but a loan above 2,500 € must be proved in writing, interest received has to be declared for tax, and crowdfunding platforms depend on CSSF authorisation.
A civil loan, distinct from consumer credit
Luxembourg's Consumer Code, which transposes the European consumer credit directive, targets lenders acting in a professional capacity. An individual who occasionally advances savings to a relative falls under the Civil Code and its articles on loans.
Article 1341: writing required above 2,500 €
In the Grand Duchy, Article 1341 of the Civil Code requires a written document to prove a contract worth more than 2,500 €. Justices of the peace regularly reject repayment claims for lack of an IOU signed by the borrower personally.
Article 1907-1: courts can cut excessive interest
No fixed usury rate exists in Luxembourg. Article 1907-1 of the Civil Code nevertheless allows the judge to reduce the debt to the capital plus statutory interest when the lender knowingly exploited the borrower's hardship or inexperience.
Two cumulative conditions applied by the Court of Appeal
Luxembourg case law requires both a manifestly excessive rate compared with normal interest, given the risk covered, and an abuse of weakness. A high rate freely accepted by an informed borrower is therefore not automatically reduced by the courts.
CSSF-licensed crowdfunding does not fund households
Since November 2021, European Regulation 2020/1503 has governed crowdfunding service providers, licensed in Luxembourg by the CSSF. This regime targets non-consumer project owners: a platform promising personal loans under this label deserves an immediate check.
Declaring interest on formulaire 100
Interest on a private loan escapes the 20% final withholding tax deducted by Luxembourg banks. Per Guichet.lu, it goes on formulaire 100 (income tax return) as investment income, after a 1,500 € annual allowance; see our page on private loan taxation.
A country of cross-border workers and foreign residents
Nearly half of residents are foreign nationals, and more than 200,000 cross-border workers come in every day from France, Belgium and Germany. A loan between a cross-border employee and a resident raises governing-law questions that should be settled in writing.
Choosing the governing law when parties live in two countries
The European Rome I Regulation lets the parties name Luxembourg law or that of the neighbouring country in the deed. Our page on peer-to-peer loans for cross-border workers details the tax pitfalls for employees who cross the border daily.
A Luxembourg notary: essential for a mortgage
A mortgage on a property in the Grand Duchy requires a notarial deed, followed by registration with the Administration de l'enregistrement, des domaines et de la TVA. The Chambre des notaires provides fee information, and no notary asks for a deposit by messaging app.
Fake lenders targeting residents and cross-border workers
Adverts written in French, German or Portuguese promise fast credit, then demand insurance, notary or release fees. The CSSF regularly publishes warnings about unauthorised entities, some of which imitate real Luxembourg institutions.
Reporting a scam: Grand Ducal Police and the CSSF
The victim files a complaint with the Grand Ducal Police, bringing screenshots, the fake lender's details and proof of transfers. Alert your bank straight away to try to recall the funds, and pass on to the CSSF any site posing as a Luxembourg lender.
Formal notice, justice of the peace and payment order
Before any lawsuit, a formal notice by registered letter recalls the agreed schedule. The justices of the peace in Luxembourg, Esch-sur-Alzette and Diekirch handle small civil disputes, and the payment order offers a simplified route for an uncontested claim.
Formalising a private loan in the Grand Duchy in six steps
- Draw up a loan contract or a signed IOU, with the amount in figures and words, the term and the agreed rate.
- Specify the governing law and competent court as soon as one party lives in France, Belgium or Germany.
- Pay the funds by SEPA transfer from an account in the lender's name, with a reference pointing to the signed contract.
- Attach a dated schedule and keep every statement proving the repayments received on the lender's account.
- If you are a resident lender, enter the interest received on formulaire 100 and have the ACD (tax authority) confirm the treatment.
- Before any deal with a stranger, read the CSSF warnings and refuse any payment demanded before the funds are released.
Costs and figures for a Luxembourg private loan
| Item | Amount or rule (indicative) | Note |
|---|---|---|
| Interest rate between individuals | Free, no fixed cap | Can be reduced by the judge (art. 1907-1 Civil Code) |
| Crowdfunding platform | Commission varies by provider | CSSF licence; business projects only |
| Notary and mortgage registration | Variable fees and duties | Ask for a written quote before signing |
| Tax on interest (resident) | Progressive scale after a 1,500 € allowance | 3,000 € for joint taxation; confirm with the ACD |
| Fees demanded by a fake lender | Often a total loss | No legitimate lender collects money before lending |
File to put together before signing in Luxembourg
- Identity card or residence permit
- Loan contract signed by both parties
- IBAN of the account receiving the funds
- Dated repayment schedule
- Proof of the initial transfer
- Borrower's proof of income
- Formulaire 100 showing the interest
Mistakes and scam signals in the Grand Duchy
- Paying arrangement, insurance or notary fees to a lender met on Facebook before receiving anything: this is the classic advance-fee scam.
- Agreeing to pay in cryptocurrency or prepaid cards, favoured by scammers because the funds become almost impossible to recover.
- Lending more than 2,500 € without a signed document, leaving the lender with no evidence before the justice of the peace if the borrower disputes it.
- Assuming a site showing a Luxembourg address is authorised without checking the CSSF registers and warnings.
- Sending a copy of your identity card and your banking codes to a stranger, which opens the door to identity theft.
Your questions about private loans in Luxembourg
Can an individual lend with interest in Luxembourg?
Yes. The rate is set freely by the parties and no fixed cap is published. The judge can, however, reduce manifestly excessive interest if the lender knowingly exploited the borrower's hardship or inexperience, under Article 1907-1 of the Civil Code.
Do I need a notary for a family loan in the Grand Duchy?
No, a private deed signed by the borrower is enough as evidence. A notary becomes necessary if the lender wants a mortgage on a Luxembourg property, and useful to obtain an authentic, directly enforceable deed.
Does a French cross-border worker lending to a resident declare the interest in Luxembourg?
It depends on their tax residence and the Franco-Luxembourg tax treaty. In principle, a French resident declares worldwide income in France. Have the situation confirmed by the competent tax authority or an adviser before setting the rate.
Are there licensed personal peer-to-peer lending platforms in Luxembourg?
Providers licensed by the CSSF under Regulation 2020/1503 fund business projects, not personal credit. For a private need, the options remain a bank, an authorised credit professional or a family loan documented in writing.