Luxembourg’s personal income tax system is progressive, with rates that top out at 45.78% including the employment fund surcharge. For expats working in Luxembourg’s financial sector, international organizations, or cross-border commuters from France, Belgium, and Germany, understanding how the system works is essential for both compliance and optimization.
This guide covers Luxembourg’s personal income tax rates, deductions, and benefits for 2026.
Who Pays Luxembourg Income Tax
Luxembourg distinguishes between residents and non-residents for income tax purposes:
- Residents are taxed on their worldwide income
- Non-residents are taxed only on Luxembourg-source income
You are a Luxembourg tax resident if you have a domicile or habitual residence in the country. The habitual residence test looks at whether you stay in Luxembourg for more than six months in a tax year. Short temporary absences do not break the continuity.
Non-residents who work in Luxembourg but live in a neighboring country pay Luxembourg income tax on their Luxembourg employment income. This income is also declared in the country of residence, where a tax credit or exemption is applied under the relevant double tax treaty. Read our cross-border worker guide for country-specific details.
Income Tax Rates for 2026
Luxembourg uses a progressive tax scale with multiple brackets. The rates below include the 7% employment fund surcharge (contribution au Fonds pour l’Emploi), which applies to all taxpayers.
Tax Class 1: Single Individuals
| Taxable Income | Tax Rate |
|---|---|
| Up to €112.65 | 0% |
| €112.65 to €13,617.00 | 8.295% |
| €13,617.00 to €16,134.00 | 9.42% |
| €16,134.00 to €18,852.00 | 10.545% |
| €18,852.00 to €22,005.00 | 11.67% |
| €22,005.00 to €27,408.00 | 13.365% |
| €27,408.00 to €32,811.00 | 15.06% |
| €32,811.00 to €38,214.00 | 16.755% |
| €38,214.00 to €43,617.00 | 18.45% |
| €43,617.00 to €50,091.00 | 20.715% |
| €50,091.00 to €57,639.00 | 23.55% |
| €57,639.00 to €66,261.00 | 26.385% |
| €66,261.00 to €75,957.00 | 29.22% |
| €75,957.00 to €86,727.00 | 32.055% |
| €86,727.00 to €98,571.00 | 34.89% |
| €98,571.00 to €111,561.00 | 37.725% |
| €111,561.00 to €125,769.00 | 40.56% |
| €125,769.00 to €150,000.00 | 42.255% |
| €150,000.00 to €200,004.00 | 43.95% |
| Above €200,004.00 | 45.78% |
Tax Class 1a: Single Parents
Single parents benefit from more favorable tax brackets. The income thresholds for each bracket are wider, resulting in lower tax at each level of income.
Tax Class 2: Married Couples Filing Jointly
Married couples and registered partners who file jointly benefit from the most favorable tax treatment. The Class 2 brackets are approximately double the Class 1 brackets, meaning the couple’s combined income is taxed at lower effective rates.
Social Security Contributions
In addition to income tax, employees in Luxembourg pay social security contributions. These are calculated on gross salary and shared between employer and employee:
| Contribution | Employee Share | Employer Share |
|---|---|---|
| Pension insurance | 8.00% | 8.00% |
| Health insurance | 2.85% | 2.85% |
| Long-term care insurance | 1.40% | 1.40% |
| Dependency insurance | 1.40% | 1.40% |
| Accident insurance | 0% | Varies |
| Total | 13.65% | Varies |
The employee total of 13.65% is deducted from gross salary before income tax is calculated. There is a social security ceiling (plafond) of approximately €135,000 per year, above which pension contributions are capped.
Tax Deductions and Credits
Luxembourg offers a range of deductions and tax credits that can significantly reduce your tax bill.
Standard Deductions
- Professional expenses: A flat deduction of €540 per year for employment-related expenses
- Special expenses: Insurance premiums, pension contributions, and certain other payments
- Extraordinary expenses: Medical expenses, funeral costs, and other exceptional charges
Itemized Deductions
Taxpayers can claim itemized deductions instead of the flat professional expense deduction:
- Commuting expenses: €0.36 per kilometer for the first 200 km, €0.18 per kilometer beyond (round trip)
- Mortgage interest on primary residence in Luxembourg
- Charitable donations to approved organizations
- Childcare expenses
- Training and education costs
- Home office expenses (under certain conditions)
Tax Credits
Luxembourg offers several tax credits:
- Single-parent tax credit: €600 per year
- Child tax credit: Varies by number of children and income level
- Low-income tax credit: For taxpayers with income below certain thresholds
- Dependency tax credit: For caring for a dependent family member
Taxation of Investment Income
Capital Gains
Capital gains on the sale of securities by private individuals are generally exempt from tax in Luxembourg, provided the individual does not hold more than 10% of the company’s shares and the shares are not held as business assets. This makes Luxembourg attractive for individual investors.
Capital gains on Luxembourg real estate are taxable. Gains on the sale of a primary residence are exempt if the property was occupied by the seller for at least three years before the sale.
Dividends and Interest
Dividends and interest received by Luxembourg residents are subject to income tax under the savings tax base. Luxembourg does not impose withholding tax on dividends paid to non-resident individuals in most cases, though the recipient’s country of residence may tax the income.
Cross-Border Workers
Approximately 220,000 cross-border workers commute to Luxembourg daily from France, Belgium, and Germany. These workers pay Luxembourg income tax on their Luxembourg employment income, which is also declared in their country of residence.
Under the double tax treaties:
- French frontier workers are taxed in Luxembourg, with a tax credit applied in France
- Belgian frontier workers are taxed in Luxembourg, with a tax credit applied in Belgium
- German frontier workers are taxed in Luxembourg, with the progression clause applied in Germany
Cross-border workers must file a Luxembourg tax return if they have Luxembourg-source income. The filing deadline is typically March 31 of the year following the tax year.
Tax Filing and Deadlines
Luxembourg tax returns are filed electronically through the LVTx platform. The standard deadlines are:
- Voluntary filing: December 31 of the year following the tax year
- Mandatory filing (if requested by tax authority): March 31 of the second year following the tax year
- Extension available upon request through a tax advisor
Joint tax returns are available for married couples and registered partners, which can result in significant tax savings compared to individual filing.
Frequently Asked Questions
Do I need to file a Luxembourg tax return if tax is withheld at source?
Luxembourg does not have a pay-as-you-earn (PAYE) withholding system for employees. Your employer withholds social security contributions but not income tax. You must file an annual tax return to declare your income and pay any tax due.
Can I claim deductions for my cross-border commute?
Yes. Commuting expenses are deductible regardless of where you live. The deduction is €0.36 per kilometer for the first 200 km of round-trip distance and €0.18 per kilometer beyond that.
Is Luxembourg a good place for retirees?
Luxembourg’s pension income is taxable, but the absence of wealth tax (abolished in 2018) and favorable capital gains treatment make it attractive for retirees. Pension income may also benefit from specific deductions and credits.
How does Luxembourg tax foreign pensions?
Foreign pensions received by Luxembourg residents are generally taxable in Luxembourg, subject to double tax treaty provisions. Some treaties give the source country the right to tax the pension, with Luxembourg providing a foreign tax credit.
Key Takeaways
Luxembourg’s personal income tax system is progressive with rates from 0% to 45.78%. The key points to remember:
- Three tax classes: Class 1 (single), Class 1a (single parents), Class 2 (married couples)
- Social security contributions total 13.65% of gross salary (employee share)
- Generous deductions for commuting, mortgage interest, and professional expenses
- Capital gains on securities are generally tax-exempt for private investors
- Cross-border workers pay Luxembourg tax on Luxembourg employment income
- Tax returns are filed electronically via LVTx, with deadlines of December 31 or March 31
- No wealth tax since 2018
Professional advice can help you maximize deductions and optimize your tax position in Luxembourg.
Disclaimer: This article is for informational purposes only and does not constitute professional tax advice. Tax laws change frequently. Consult a qualified tax advisor for guidance specific to your situation.