Publié le 28 May 2025

6 types of extraordinary expenses you can deduct from your tax return

Discover 6 extraordinary expenses you can deduct in Luxembourg. Reduce your taxes and simplify your return with taxx.lu!

Tax season can be stressful, but understanding what you can deduct can make a significant difference in your final tax bill. In Luxembourg, certain extraordinary expenses can be deducted from your taxable income, helping to reduce your overall tax liability. These expenses must be unavoidable and significantly impact your financial situation. Here are six types of extraordinary expenses that you can claim on your tax return.

1. Medical expenses not covered by Insurance

Medical costs can quickly add up. Expenses not reimbursed by the CNS or complementary health insurance (DKV, CMCM, etc.) may be deductible, such as:

Hospital bills and medical treatments
Prescription medications
Dental procedures and vision care
Physical therapy or specialized treatments

📌 Keep all invoices, receipts, and proof of non-reimbursement (from CNS and complementary health insurance (DKV, CMCM, etc.)) to support your claim.

2. Divorce-related costs

Some legal fees from divorce proceedings may qualify as extraordinary expenses, including:

Lawyer fees directly related to the divorce
Court filing and litigation costs

❗ Only costs directly related to the dissolution of the marriage are considered.

3. Funeral expenses

If you paid for the funeral of a close family member, you may be able to deduct expenses such as:

Funeral home services
Burial or cremation costs
Transportation of remains

💡 Only non-reimbursed costs are deductible.

4. Civil Court costs

In certain cases, personal legal disputes may lead to deductible expenses. This could include:

Legal fees in personal disputes
Costs related to civil judgments or financial claims

⚠️ Court costs related to business activities are not eligible.

5. Financial maintenance for dependents

If you support elderly parents or disabled family members, eligible expenses include:

Nursing home or care facility costs
Home care services
Special equipment or renovations for accessibility

📑 Documentation is required to prove financial dependency and support.

6. Doctor-prescribed dietary plans

When a doctor prescribes a specific diet for medical reasons, the following may be deductible:

Medical nutritional supplements
Specialized dietary foods (if prescription-based)

How Is the deductible threshold calculated?
Before extraordinary expenses can reduce your taxable income, they must exceed a minimum threshold. This minimum is calculated based on your adjusted taxable income and household composition. You can view the full calculation table here: https://help.taxx.lu/en/article/how-is-the-minimum-amount-for-extraordinary-expenses-calculated-1207aiv/

Or skip the manual work 👉 just use taxx.lu.
Our system calculates your exact threshold automatically, so you'll instantly know whether your expenses qualify.

Final thoughts

Understanding which extraordinary expenses are tax-deductible can help reduce your overall taxable income and provide financial relief. However, proper documentation and compliance with tax regulations are crucial. Always keep receipts and consult with a tax professional to ensure that your deductions meet the required criteria.

Disclaimer

All tax deductions are subject to approval by the Luxembourg tax authorities. Acceptance depends on individual circumstances and compliance with tax regulations.

By taking advantage of these deductions, you can make your tax return work in your favor while ensuring that you comply with Luxembourg’s tax laws.

Make your life easier with taxx.lu. Our step-by-step process walks you through all possible deductions to help you get the most out of your tax return. Plus, we provide tips to optimize your next one even further. Take advantage and start saving today!