VAT in Luxembourg: rates and checks before invoicing

You need to issue an invoice and are unsure about the rate? The rate is the final step in a line of reasoning: identifying the transaction, its place of taxation and the conditions of the regime. Let us start with these reference points before choosing a percentage.

Classify the transaction before choosing the rate

Start by describing what is sold: goods, services or a bundle of services. Identify the customer, their status and the countries involved. The location of the transaction may result in taxation in another State, a reverse charge or specific treatment.

A foreign VAT number is not sufficient to conclude that an invoice must be issued without tax. Check the nature of the transaction, territoriality rules, supporting documents and the required invoicing particulars. If in doubt, request a written classification before issuing the first invoice.

Distinguishing reduced rates, exemption and reverse charge

A reduced rate remains a tax rate applied to a taxable transaction. An exemption and a reverse-charge mechanism are governed by other rules, particularly regarding reporting obligations and the deduction of input tax. These terms are not interchangeable.

The official page on VAT presents the rates and refers to the applicable framework. For a transaction potentially eligible for a reduced rate, retain the exact reference and the elements demonstrating that your service falls within its scope. An approximate commercial description is not sufficient.

Check the calculation and the invoice

As an arithmetic example, a taxable amount of €1,000 subject to the standard rate of 17% produces €170 of VAT and a total of €1,170. This calculation merely illustrates the mechanics of the rate; it does not determine which rate should apply to your sale.

Check the amounts excluding tax, discounts, incidental expenses, rounding rules and consistency with the accounts. Where an invoice contains several categories, the breakdown must make it possible to understand the treatment of each. Configure your software based on validated rules, then check a sample of invoices.

Correct an error without losing its trace

If an incorrect rate has already been used, establish the necessary documentary and reporting corrections with the firm. Avoid silently replacing a document that has already been sent. Reconcile corrections with payments and inform the customer where this affects their invoice.

When regulations change, check the effective date and the rules relating to ongoing transactions. An article bearing a year in its address does not prove that the rule is up to date: check the revision date and the official source.

Find the legal basis for the rate applied

The AED distinguishes the standard rate of 17%, the intermediate rate of 14%, the reduced rate of 8% and the super-reduced rate of 3%. Specific categories refer in particular to the annexes to the VAT law: C for 14%, A for 8% and B for 3%, together with the other provisions mentioned by the administration. These reference points were checked on 20 September 2026.

Create a record for each sales category: precise description, regime, reference used and validation date. Attach an example of a contract or order. Where an offer consists of several elements, have it reviewed to determine whether their treatment should be combined or separate; creating several lines in the software does not in itself settle this issue.

For international transactions, use the guides on supplies of goods within the European Union and B2B services subject to reverse charge. The customer's country is part of a broader analysis than simply choosing between the four national rates.

Check a VAT-inclusive price and software settings

To determine the amount excluding tax from a VAT-inclusive price, divide the VAT-inclusive amount by 1 plus the rate expressed as a decimal. In a purely arithmetic example at the 17% rate, €117 including VAT corresponds to 117 / 1.17 = €100 excluding VAT and €17 of VAT. Simply subtracting 17% from €117 would give an incorrect result.

Test invoices with a quantity, a discount and, if your business requires it, several validated treatments. Compare the document sent to the customer, the software totals and the accounting entry. The guide on invoice particulars supplements the check of amounts with that of the information to be displayed.

If you find an error, identify the documents concerned before changing the settings. The guide on credit notes and invoice corrections helps maintain a clear audit trail. Have the impact on returns already submitted reviewed, then check a new invoice after correction. Keep the date of the change and its justification so that the next person involved understands the differences between periods.

Points to prepare

• Nature of the transaction and country of taxation identified.
• Customer's VAT status and details checked.
• Reference for the rate or regime retained.
• Invoice, entry and return consistent.

Frequently asked questions

Does the standard rate apply to all services?

No. Location, exemptions and specific categories may change the treatment. The service must be classified.

Does an invoice without VAT exempt you from filing a return?

Not necessarily. Some transactions with no VAT charged must still be reported; their conditions must be reviewed separately.

Questions to ask the professional

• Which treatment exactly applies to my service?
• Which supporting documents must I retain to apply it?

To clarify the scope of your request, also consult our tax services section.