Question 1

What is the difference between gross and net salary in Luxembourg?

Accepted Answer

Gross salary is your pay before any deductions. Net salary is what you receive after income tax, employee social security contributions (health, pension, long-term care, work accident) and, where applicable, the municipal surcharge. For a typical employee, deductions total 20–30% of gross, depending on salary level and tax class.

Question 2

What are the tax classes in Luxembourg?

Accepted Answer

Luxembourg has three tax classes. Class 1 applies to single employees. Class 1a applies to single parents or individuals aged 65 and over. Class 2 applies to married couples and civil partners (PACS) — it uses income splitting, which lowers the effective tax rate when partners earn unequal amounts.

Question 3

How is income tax calculated in Luxembourg?

Accepted Answer

Luxembourg uses a progressive tax scale ranging from 0% to 42%. The taxable base is your gross salary minus standard deductions (employee social security, work-related expenses flat allowance of €540/year, and special expenses). The resulting tax is calculated per bracket, then adjusted by any applicable credits.

Question 4

How are social security contributions calculated for employees in Luxembourg?

Accepted Answer

Employee contributions cover health insurance (3.05%), pension (8%), long-term care (1.4%), and work accident insurance (variable). Combined, employees typically contribute 12–14% of gross salary. A contribution ceiling applies to higher salaries.

Question 5

How are cross-border workers (Grenzgänger) taxed in Luxembourg?

Accepted Answer

Cross-border workers who live in France, Belgium or Germany and work in Luxembourg are taxed in Luxembourg on their Luxembourg-source income under bilateral tax treaties. They contribute to the Luxembourg social security system and benefit from the same deductions as residents, including the distance-to-work deduction (up to 30 km). Special bilateral agreements with each neighbouring country define how many days you may work remotely before your social security affiliation changes — check the rules for your specific country of residence.

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