Posted on 27 May 2025
Tax Return 2024: Deadlines in Luxembourg
Tax return 2024 in Luxembourg: submissions started April 7. Deadline is December 31. Avoid penalties, get help with taxx.lu today!
New submission start date
In previous years, tax returns could be submitted as early as February. In 2025, submissions for the 2024 tax year only opened on April 7, 2025.
Important: The deadline remains December 31, 2025. After this date, late penalties may apply.
🕓 What about previous years’ returns?
Forgot to file for 2023, 2022, or earlier? You can only submit a late return if it was mandatory.
- ✅ If it was required: You must still file, even if it’s late.
- ❌ If it wasn’t required: It’s too late to file, even if you were entitled to a refund.
⚠️ Why meeting the deadline matters:
- Avoid penalties: Late filing can lead to fines and interest charges, reducing any potential refund.
- Avoid admin headaches: Delays can trigger audits, correction requests, or prolonged communication with the tax office.
- Avoid legal risks: In severe cases, not meeting tax obligations could result in legal action.
âś… Be ready with taxx.lu!
- Gather your documents: Salary slips, bank statements, receipts for deductible expenses…
- File online 24/7: Use taxx.lu for a smooth and easy submission process.
In a nutshell:
Submission opened later this year, but the deadline is unchanged. Don’t wait, avoid penalties, and file your return on time!
Submission opened later this year, but the deadline is unchanged. Don’t wait, avoid penalties, and file your return on time!
Not sure if you need to file a tax return?
 👉 Find out here
 👉 Find out here
