Publié le 24 July 2024

Tax Return 2023 in Luxembourg

Discover everything you need to know about the tax return 2023 in Luxembourg. Learn about the filing process, deadlines, common deductions, and tips for ensuring accuracy in your tax return.

Tax season doesn’t have to be a nerve-wracking time of year. If you’re living or working in Luxembourg and staring down your tax return, don’t worry—we've got you covered. Let’s break down the essentials of filing your tax return in Luxembourg in a way that’s easy to understand and even a bit friendly.

1. Luxembourg’s Tax System: The Basics

Luxembourg’s tax system is progressive, which means the more you earn, the higher your tax rate. Both residents and non-residents may need to file a tax return, depending on their income and where it comes from. The tax year runs from January 1 to December 31, so it’s pretty straightforward.

2. Who Needs to File?

If you're living in Luxembourg and earning money—whether from a job, self-employment, or rental income—you’ll likely need to file a tax return. It’s also a good idea if you want to claim deductions or tax credits. Non-residents with Luxembourg-based income might have to file as well, but there are specific rules and treaties to consider.

3. Key Deadlines

Mark your calendar! The general deadline for filing your tax return is December 31 of the year after the tax year. So, for 2023, you’d need to have your return in by December 31, 2024.

4. What You’ll Need

Before you start, gather these important documents:

Annual salary certificates
Other income certificates (pensions, foreign income, etc.)
Insurance certificates (civil liability, life, sickness, etc.)
Old age pension insurance certificates
Home savings certificates
Debit interest certificates for personal loans and/or mortgages
Donations certificates
Certificates for childcare costs and/or household help
Details of maintenance payments (children or ex-spouse)

5. How to File Your Return

Filing your tax return in Luxembourg is easy with taxx.lu.

Here’s a brief rundown of the steps:

Create an Account or Log In:

Visit taxx.lu and either create a new account or log in if you already have one.

Start Your Tax Return:

Once logged in, select the option to start a new tax return. The system will guide you through a series of questions to gather your personal information.

Enter Your Information:

Fill in details about your income, including salary certificate, self-employment earnings, and any other sources of income.
Input information about deductions and credits, such as professional expenses, childcare costs, or donations.

Review and Validate:

Check all the information you’ve entered for accuracy. taxx.lu provides prompts and checks to help ensure your data is complete and correct.

Submit Your Tax Return:

Once everything looks good, submit your tax return directly through MyGuichet or by post.

6. Wrapping It Up

Filing your tax return in Luxembourg doesn’t have to be stressful. With a little preparation and understanding, you can handle it like a pro. Stay organized, keep track of deadlines, and make use of available deductions to get the best outcome !