What is a voluntary tax return in Luxembourg?

A voluntary tax return in Luxembourg is a tax return that you file even if you are not required to do so. It allows you to:

• declare your income and expenses
• benefit from deductions and tax credits
• recover any overpaid tax if you have paid more than you actually owed

In short, it is a way to ensure you pay the correct amount of tax and to reclaim any amounts that may be due to you.

Updated on: 16/01/2026