Luxembourg tax returns: the key tax breaks you need to know about

Many Luxembourg taxpayers still benefit too little from the deductions to which they are entitled. However, according to a study by ILRES, 6 out of 10 people are interested in tax optimisation. The schemes exist and are accessible... but are often little-known.
Here is a clear overview of the main optimisations:
Retirement provision
A retirement savings plan that allows you to build up capital for your future years while benefiting from an immediate tax reduction. Ideal for securing your future while optimising your tax position.
Supplementary health insurance
This insurance complements your basic cover by reimbursing more of your healthcare costs. Premiums paid can also be deducted from your income, up to the legal maximums, giving you double protection: health and tax.
Life insurance
It's an effective way of providing financial protection for your loved ones in the event of an unexpected event. It also offers attractive tax benefits, depending on the term of the policy and the type of payments made.
Building society savings
Designed to prepare you for a property project, these savings can finance the purchase of a property, its renovation or the repayment of a mortgage. It benefits from attractive tax advantages and encourages careful, planned management of your project.
Mortgage loan
The interest you pay on your loan, as well as certain costs associated with your finance, can be deducted from your taxable income. This reduces the overall cost of your loan and lowers your tax bill.
Outstanding balance insurance
This insurance protects your family or heirs if you become unable to repay your mortgage. Premiums paid may be tax-deductible, combining security and optimisation.
Donations
By supporting an approved organisation, you are helping a cause that is close to your heart and benefiting from a reduction in your tax. It's a way of combining solidarity with tax relief.
💡 Optimise everything easily with taxx.lu
All these optimisations can be incorporated into your declaration in just a few minutes.
With taxx.lu, You will be guided step by step to don't forget anything and get a optimal reimbursement, stress-free.
📅 Reminder: the 2024 tax return can be filed until 31 December 2025.
Written by
atHome.lu
Posted on
17 November 2025