April 7 marks the official opening of the tax return period in Luxembourg, an ideal moment to plan ahead and avoid end‑of‑year stress. By getting started early, you gain peace of mind and enjoy a much smoother and more efficient management of your finances for the rest of the year.

How to complete your tax return?

In Luxembourg, you have two options.

– The paper version, via form 100F, is still available and continues to be used by many French‑speaking taxpayers.

– However, the most common solution is the online declaration on MyGuichet.lu: either by downloading and uploading the completed PDF or by filling out the form directly online.

In all cases, a LuxTrust certificate is required to secure your procedures.

Deductible expenses: a real advantage to reduce your taxes

Optimising your tax return in Luxembourg starts with identifying the deductible expenses you are entitled to. These directly lower your taxable income and therefore the final amount of tax you have too pay.

Among the most common deductions are:

– employment-related expenses linked to your salaried activity,

– alimony/maintenance payments or other permanent annuities,

– mandatory social security contributions.

Certain insurance policies, such as car liability insurance, private liability insurance (normally part of your home insurance policy), or supplementary health insurance, can normally be included in your tax return.

Additionally, provident insurance premiums, a deductible up to €672 per person (in the household) each tax year, and TSRD insurance (life coverage for a mortgage/home loan), which covers the outstanding balance of a loan, also benefit from a deduction of up to €672 per person (in the household).

Other expenses, such as home savings contributions, childcare costs, or domestic service expenses, can also help reduce your tax bill. Mastering these different levers can therefore lead to significant savings.

Good news this year:

The tax ceiling for supplementary pension insurance increases from €3,200 to €4,500. Preparing for retirement is now even more attractive, with a larger immediate tax benefit.

With taxx.lu, everything happens in just a few clicks

To simplify your tax return, Foyer partners with taxx.lu, an intuitive and secure Luxembourg platform. It guides you step by step and automatically reads your documents thanks to Auto‑Scan, reducing errors and speeding up the process.

The platform instantly shows whether you owe money or are entitled to a refund and provides personalised optimisation advice for future years.

You’re never alone: taxx.lu experts are available via chat or email whenever you need assistance. This partnership offers you considerable time savings and a much smoother user experience.

An exclusive benefit for Foyer clients

As a Foyer client, you automatically receive 30% off all taxx.lu subscriptions, a unique advantage that makes the service even more accessible.