VAT and invoicing for freelancers in Luxembourg: the practical guide

You've just landed your first freelance assignment in Luxembourg? Congratulations. Before you even think about delivering the project, a very concrete question arises: how do you invoice your client correctly? Invoicing is the first real administrative obligation freelancers face, and VAT sits at the heart of it. VAT number, exemption scheme, applicable rates, reverse charge for European clients, mandatory mentions: this practical guide covers what every self-employed professional needs to know to invoice with confidence in the Grand Duchy.

Invoicing: the freelancer's first concrete obligation

When you go independent, you tend to focus first on legal status or prospecting. But as soon as the first assignment is signed, it is the invoice that makes your activity real: it triggers payment, serves as accounting evidence and forms the basis of your tax returns. A poorly drafted invoice can delay settlement or create problems in the event of an audit.

In Luxembourg, invoicing is closely tied to VAT. Before issuing your first invoice, you therefore need to know which regime you fall under: exemption scheme or standard regime. First step: registration.

Registering for VAT with the AED

In Luxembourg, VAT is administered by the Administration de l'enregistrement, des domaines et de la TVA (AED). Anyone who carries on an economic activity independently and on a habitual basis is considered a taxable person for VAT and must register with this administration.

In practice, registration is done through an initial declaration to the AED, in which you describe your activity, legal form and expected turnover. At the end of this process, you receive your VAT identification number, which must appear on all your invoices and also serves as your intra-EU VAT identifier for clients established in other European Union countries.

Procedures, forms and detailed explanations are available on the official portal guichet.public.lu, which centralises all administrative procedures for businesses and self-employed professionals in Luxembourg.

The VAT exemption scheme: simplicity for small turnovers

Luxembourg provides an exemption scheme for small businesses: if your annual turnover does not exceed €35,000, you can benefit from the VAT exemption. In that case, you do not charge VAT to your clients and you do not have to file periodic VAT returns.

Be careful, though: exemption does not mean no obligations. You must still register with the AED, and your invoices must carry a mention stating explicitly that you benefit from the exemption scheme and that VAT does not apply.

Advantages of the exemption scheme

• Administrative simplicity: no VAT returns to prepare, and no VAT to collect and remit.
• Attractive pricing for private clients: non-taxable clients pay a price without VAT, which can be a competitive advantage.
• Ideal for getting started: if you are launching your activity alongside employment or testing the market, the exemption lightens your administrative load.

Limits of the exemption scheme

• No deduction of input VAT: you cannot recover the VAT paid on your business purchases (equipment, software, services). If you invest heavily, the exemption can cost you more than it saves.
• Threshold quickly reached: for an IT freelancer billing at a daily rate (TJM), the €35,000 annual turnover threshold is crossed within a few months of full-time work.
• No advantage in B2B: for a business client, VAT is neutral because they deduct it. The exemption therefore brings no pricing advantage when dealing with professional clients.

In practice, most IT freelancers in Luxembourg quickly exceed this threshold and move onto the standard regime.

The standard regime: Luxembourg VAT rates

If your turnover exceeds the exemption threshold, or if you voluntarily opt out of the scheme, you apply the standard regime: you charge VAT to your clients, remittance it to the AED and deduct the VAT paid on your professional expenses.

Luxembourg applies four VAT rates:

• 17 %: the standard rate, which applies by default to most goods and services.
• 14 %: the intermediate rate, reserved for certain specific categories.
• 8 %: the reduced rate, applicable to certain goods and services defined by law.
• 3 %: the super-reduced rate, the lowest in the European Union, for certain essential products and services.

Good news for simplicity: IT services, development, consulting and, more generally, intellectual services provided by IT freelancers generally fall under the standard rate of 17 %. In the vast majority of cases, you will therefore only have one rate to manage. If in doubt, contact the AED or a chartered accountant.

Invoicing clients in the EU: reverse charge

The Luxembourg market is international by nature: it is very common for a freelancer based in the Grand Duchy to invoice clients in France, Belgium, Germany or elsewhere in the European Union.

For B2B services between taxable persons in two different member states, the general rule is reverse charge (autoliquidation): VAT is due by the client in their own country, not by you. In concrete terms:

1. You invoice excluding VAT: your invoice includes no Luxembourg VAT amount.
2. You add the mandatory mention: the invoice must state explicitly that VAT is reverse-charged by the recipient (a mention such as “Autoliquidation — Reverse charge”).
3. You indicate both intra-EU VAT numbers: yours and your client's.
4. You file recapitulative statements: these returns list your intra-EU supplies and allow European tax authorities to cross-check the information.

Essential point: before applying reverse charge, always check the validity of your client's intra-EU VAT number via the VIES system, the validation tool provided by the European Commission. An invalid or expired number could call the exemption into question and expose you to a VAT assessment.

And for clients outside the EU?

For services supplied to professional clients established outside the European Union, the general rule is that the transaction falls outside the scope of Luxembourg VAT: you invoice without VAT, with an appropriate mention. Precise rules can vary depending on the service and the client's country, so have unusual cases validated by a professional.

Mandatory mentions on a Luxembourg invoice

Whatever your situation, a compliant invoice must include a core set of mandatory mentions. Here is the checklist to review before each send:

• Your full identity: name or company name, address of your establishment.
• Your client's identity: name or business name and address.
• Your VAT number and, for intra-EU transactions, your client's.
• The issue date of the invoice and, if different, the date of the service.
• A unique sequential number: your invoices must follow continuous numbering, with no gaps or duplicates.
• Description of the service: nature of the services, quantity or number of days, period covered.
• The price excluding tax (HT), broken down by line where applicable.
• The VAT rate and amount, or the applicable exemption mention (exemption scheme, reverse charge, out-of-scope transaction).
• Payment terms: deadline, bank details, any late-payment penalties.

A practical tip: create a complete invoice template from the start, or use invoicing software that handles automatic numbering. You will avoid omissions and save valuable time.

VAT returns: frequency and online filing

If you are under the standard regime, you must file periodic VAT returns with the AED. The frequency — monthly, quarterly or annual — depends on your turnover: the higher it is, the more frequent your returns. In all cases, an annual recapitulative return closes the financial year.

Filing is done online via the official electronic platforms. Plan ahead: the VAT collected from your clients does not belong to you. Set it aside in a dedicated account as soon as you receive payment, so you are never short when the time comes to remit it.

Invoicing best practices for sound cash-flow management

Beyond compliance, invoicing is a tool for steering your cash flow. A few habits worth adopting:

• Invoice quickly and regularly: issue your invoices as soon as the month or agreed milestone ends. Every day of delay in issuing is an extra day before payment.
• Set clear payment terms: a 30-day term is standard practice in B2B. Spell it out in black and white in your contracts and on your invoices.
• Request deposits: for fixed-price projects or long assignments, a deposit at kick-off secures your commitment and tests the client's reliability.
• Follow up without delay: a polite reminder as soon as the due date is passed, then more formal follow-ups. Consistent chasing makes all the difference.
• Keep your invoices for 10 years: issued and received invoices must be archived and available in the event of an audit. Digital archiving by year and by client will make life easier.
• Set the right rate: for a daily rate consistent with your real costs and cash flow, use our Luxembourg TJM simulator.

Conclusion: invoice cleanly, grow with confidence

VAT and invoicing in Luxembourg are not that complex once the basics are in place: registration with the AED, choosing between the exemption scheme (up to €35,000 turnover) and the standard 17% regime for IT services, reverse charge for your European B2B clients, and discipline on mandatory mentions. By structuring your invoicing from the start, you gain credibility with clients and protect your cash flow.

To go further on legal status, social contributions and every step of launching, see our complete guide to freelancing in Luxembourg. And to find your next assignments in the Grand Duchy, take a few minutes to create your profile on Freelancers.lu: it is free, and it is the best showcase for your activity.