Tax return guide

Filing a tax return in Luxembourg is often seen as a complicated and time-consuming task. The official form (Form 100) is more than twenty pages long and poses a real challenge both for residents and cross-border workers.

To make this process easier, we launched taxx.lu in 2018. Since then, tens of thousands of taxpayers have trusted our platform to handle their annual tax return. With innovative tools such as semi-automated form filling ,Auto Scan function, users can generate their tax return in just a few clicks. On top of that, they also benefit from a free tax analysis to help them reduce their overall tax burden.

With this Tax Return Guide for residents and cross-border workers, we want to go one step further. Each chapter covers a key topic of the Luxembourg tax return — income, deductions, insurance, housing, savings — to provide readers with clear explanations, practical examples, and optimization opportunities.

Our goal is simple: to combine the efficiency of an online platform with the clarity of a reference guide, so that every taxpayer can complete their tax return with confidence and peace of mind.

This guide will be continuously updated to reflect legislative changes and expanded based on the feedback and needs of our users.

Patrick Malget - Co-fondateur de taxx.lu