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🌐 Cross-border workers

Cross-border worker: is it worth filing a tax return?

Many cross-border workers wonder whether they must — or would benefit from — filing a tax return in Luxembourg.

Obligation or opportunity?

In some cases, the tax return is mandatory (depending on the level and nature of income). In others, it is optional but beneficial: it lets you claim deductions not accounted for in the monthly withholding.

When a tax return is often worthwhile
  • You have a home loan with outstanding balance insurance.
  • You contribute to an old-age provision scheme (111 bis).
  • You qualify for resident-equivalent status (90% threshold).
  • You had income variations during the year.

Our approach

We check free of charge whether you are subject to an obligation, and above all whether it is worthwhile for you to file. No specific figure can be guaranteed in advance: the outcome depends on your situation. But taking stock costs nothing and helps avoid missing a deduction.

General information, subject to legal and contractual conditions and your personal situation; to be confirmed with the ACD (Luxembourg tax authority) or a qualified professional.

A question about your situation?

Our approved Foyer advisers answer your questions and support you, with no obligation.

📞 +352 27 99 72 72 📅 Book an appointment

Related articles

How does the 90% threshold work?The well-known 90% threshold determines whether a cross-border worker can be treated as a Luxembourg resident. Here’s the principle. Resident-equivalent status: what are the conditions?Becoming a “resident-equivalent” gives access to a resident’s deductions. We set out the conditions and what changes. Tax class and cross-border workers: what you need to knowClass 1, 1a or 2: your tax class affects the tax withheld. What it means for a cross-border worker.