Luxembourg – Taxation

How does the tax system in Luxembourg work?

Luxembourg operates a single national tax system — there is no additional layer of regional or federal personal income tax of the kind found in countries such as Switzerland or the United States. The central authority for direct taxes is the Administration des contributions directes (ACD), commonly known as the Luxembourg Inland Revenue. All individuals — resident and non-resident alike — deal with the ACD on matters relating to income tax.

Resident individuals are taxed on their worldwide income, while non-residents are liable only for income arising from Luxembourg sources. This global basis of taxation is broadly consistent with the approach taken by France, Germany, and numerous other continental European nations, and stands in contrast to purely territorial systems that some jurisdictions apply. Crucially, a person’s nationality has no bearing on their tax liability in Luxembourg.

Luxembourg law sets out two distinct tests for establishing individual tax residence: the fiscal domicile (domicile fiscal) and the habitual abode (séjour habituel). As a practical matter, having an effectively used dwelling in Luxembourg or remaining in the country for more than six consecutive months is sufficient to trigger tax residence, even if that period bridges two fiscal years or is briefly interrupted. Furthermore, any individual who spends more than 183 days in Luxembourg during a calendar year is treated as a tax resident, irrespective of whether they maintain a permanent home there.

Rather than adopting a system akin to the UK’s Pay As You Earn tax-code approach — which calculates withholding on an individual-per-employer basis — Luxembourg assigns each taxpayer a tax class that reflects their personal circumstances, particularly their family situation. Three classes exist: Class 1 covers single individuals; Class 2 applies to married persons and civil partners meeting specific conditions; and Class 1a is for single parents with dependent children as well as single taxpayers who have reached the age of 65 by 1 January of the relevant tax year.

The tax scale is progressive, meaning that higher income attracts a higher rate, but only the portion of income falling within each bracket is taxed at that bracket’s rate — the whole of a person’s income is not automatically charged at the top rate. For employees, Luxembourg employers are required to deduct income tax from wages at source and remit it to the tax authorities each month on the employee’s behalf.

There are no specific pre-arrival tax registration formalities, but it is important to understand that obtaining a residence permit does not by itself confer tax resident status. The ACD website should always be consulted for the latest rules, since thresholds and procedures are subject to change.

Does Luxembourg have double taxation agreements, and how do they affect expats?

Luxembourg has concluded 94 double taxation treaties (DTTs), the majority of which incorporate the exchange-of-information provisions found in Article 26.5 of the OECD model convention. This places Luxembourg among the countries with the most comprehensive treaty networks globally, which is a considerable practical advantage for anyone relocating to the Grand Duchy from overseas.

A double taxation treaty is a bilateral agreement between two states intended to prevent the same income from being taxed in both countries simultaneously. Such overlap can arise when a person earns income in a country other than the one in which they reside. Without a treaty in place, income could face taxation both where it originates and where the recipient is resident, creating a double tax burden.

Among the countries with which Luxembourg has concluded such agreements are Belgium, France, Germany, the Netherlands, Italy, Spain, Switzerland, the United States, Canada, China, Japan, and India. The network encompasses every EU member state as well as the majority of the world’s principal economies, making Luxembourg particularly attractive to internationally mobile professionals.

In practice, treaties operate in one of two ways for residents of Luxembourg: either the right of the foreign country to tax a specific category of income is eliminated entirely (the exemption method), or Luxembourg grants a credit for tax already paid abroad against the Luxembourg liability (the credit method). A treaty allocates the taxing rights over particular categories of income between the two contracting states. Some income may be fully taxable in Luxembourg, while other income may be subject only to limited taxation there, leaving room for additional taxation by the other state.

Where disagreements arise between contracting states, Luxembourg resolves treaty disputes through Mutual Agreement Procedures (MAP). Under this mechanism, the competent authorities of both countries engage with one another to address issues such as double taxation or conflicting treaty interpretations, giving taxpayers a formal avenue to challenge unfair outcomes.

The complete and current list of Luxembourg’s DTTs is published on the ACD website. Because treaties are regularly renegotiated and updated in line with evolving international standards, it is essential to verify the status of the relevant agreement with your previous country of residence before assuming that double taxation relief will apply.

What taxes do expats need to pay in Luxembourg?

Income Tax

Income tax is assessed using a progressive scale that currently runs from 8% on taxable income above €13,230 to 42% on income exceeding €234,870 (as of 2025). In addition, a solidarity surcharge is levied on top of the base income tax: this surcharge ranges from 7% to 9% for individuals in Classes 1 and 1a whose income exceeds €150,000, or for Class 2 taxpayers whose income surpasses €300,000. The maximum combined income tax rate — encompassing all applicable contribution charges and the solidarity surcharge — is capped at 45.78%. Current brackets should always be verified on the ACD website or via the Ministry of Finance’s tax calculator at manner-steieren.lu.

Capital Gains Tax

Gains from the disposal of a taxpayer’s principal residence are exempt from tax. For other property, timing is decisive: gains on real estate sold within five years of its acquisition are subject to progressive income tax rates. Where the disposal occurs more than five years after the property was acquired, a reduced rate applies — effectively half of the taxpayer’s marginal rate. For privately held movable assets such as shares, short-term gains realised within six months of acquisition are generally taxed as income, whereas gains on assets held for longer periods may qualify for reduced rates or exemptions — confirm the current position with the ACD.

Wealth Tax

No wealth tax is levied on private individuals in Luxembourg. This sets the country apart from jurisdictions such as Spain or Norway, where taxes on individual net worth are imposed. A net wealth tax does apply to companies and certain investment vehicles, but individuals fall outside its scope.

Inheritance and Gift Tax

Luxembourg imposes an inheritance tax (droits de succession) on assets transferred on death, with rates varying according to the closeness of the relationship between the deceased and the beneficiary. Transfers between spouses and direct descendants typically attract lower rates or qualify for exemptions. Lifetime gifts are subject to gift tax rules that likewise depend on the value transferred and the parties’ relationship. Current thresholds and rates are maintained by the Administration de l’Enregistrement, des Domaines et de la TVA (AED), and should be confirmed there as they are subject to legislative revision.

Property Tax

Property owners in Luxembourg pay an annual property tax (impôt foncier) to the relevant municipality, with rates varying by commune but generally remaining modest by European standards. Registration duties (droits d’enregistrement) are also payable on property transactions. As of 2025, the Bëllegen Akt tax credit was raised to €40,000 per person (€80,000 per couple) and is available for primary residences acquired between 1 January 2025 and 30 June 2025. These credits and the timeframes during which they apply are revised periodically, so current figures should be confirmed with the AED.

Social Security Contributions

As a general rule, all professional income earned in Luxembourg is subject to social security contributions payable to the Centre Commun de la Sécurité Sociale (CCSS). Both employer and employee are required to make matching contributions for sickness and old-age coverage. These contributions apply up to a wage ceiling that is adjusted for inflation, set at €158,267.52 per year (€13,188.96 per month) since January 2025. Certain non-resident workers may instead pay social security contributions in their home country under applicable European legislation.

VAT

Luxembourg operates four VAT rates: 17%, 14%, 8%, and 3%. The standard rate of 17% is the lowest among all EU member states, which can make the cost of everyday goods and services feel noticeably more affordable than in neighbouring countries such as France, where the standard rate is 20%, or Germany at 19%.

Are there any tax breaks or special regimes for expats in Luxembourg?

The Impatriate Tax Regime (Régime Impatrié)

Individuals recruited from overseas or seconded to Luxembourg who thereby become Luxembourg tax residents may, under certain conditions, be eligible for the impatriate tax regime. This is among the most valuable tax incentives available to newly arrived foreign workers, and it was substantially overhauled with effect from 2025.

From 1 January 2025 onwards, the regime provides a 50% tax exemption on remuneration up to a cap of €400,000 — yielding a maximum annual tax exemption of €200,000. To qualify, the individual must be highly qualified, must receive an annual base salary of at least €75,000, and must not have been subject to Luxembourg tax, resident in Luxembourg, or living within 150 km of the Luxembourg border during the five years preceding the commencement of their Luxembourg employment.

The regime is available from the year of arrival and may continue for up to eight further years. By comparison, Portugal’s former Non-Habitual Resident (NHR) regime — which offered a flat 20% rate over ten years but was abolished in 2024 — and Italy’s flat-tax arrangement for high-net-worth inbound residents are aimed more at passive income earners and retirees, whereas Luxembourg’s scheme is specifically designed for highly qualified employees.

Opting into the new impatriate regime is irrevocable and must be formally communicated to the Luxembourg tax authorities. The regime then runs until the close of the eighth tax year following the year in which the individual began working in Luxembourg. Because the election cannot be reversed, taking qualified professional advice before committing is strongly encouraged.

Young Employee Bonus (Prime Jeune)

Workers entering the job market for the first time can benefit from a 75% tax exemption on a bonus paid by their initial Luxembourg employer under a permanent employment contract, applicable over a five-year period. The employee must be under 30 at the start of the relevant year and must earn an annual salary below €100,000. This measure is designed to help Luxembourg attract and retain younger talent.

Profit-Sharing Scheme (Prime Participative)

Introduced in 2021, the profit-sharing scheme (prime participative) allows Luxembourg companies to pay employees a bonus linked to company profits, with 50% of that bonus exempt from income tax. The scheme was enhanced in 2025 through an increase in the applicable thresholds, making it a more generous incentive for both employers and employees.

Other Deductions and Reliefs

Luxembourg offers a range of tax benefits for residents, including deductions for charitable donations, reimbursement of childcare costs, and mortgage interest payments. Deductions are also available for pension contributions, life insurance premiums, and certain professional expenses. These can produce a meaningful reduction in taxable income, especially for households with children. The guichet.public.lu portal provides a comprehensive overview of the deductions currently available.

How and when do expats file a tax return in Luxembourg?

Luxembourg’s fiscal year runs from 1 January to 31 December. Both residents and non-residents with direct income from Luxembourg sources must submit an annual tax declaration by 31 March of the year following the relevant tax year. For the 2025 tax year, the filing deadline is therefore 31 March 2026. It is always advisable to verify the current deadline on the ACD website, as extensions are occasionally granted.

Filing is not obligatory for everyone. Under certain circumstances, residents and non-residents may be exempt from the requirement — for example, if their annual income falls below a specified threshold or if their full tax liability has already been met through withholding at source. Notably, Class 1 and 1a taxpayers who receive less than €100,000 per year from a single source such as a pension are among those who may be exempt.

Here is a step-by-step overview of the filing process for a newly arrived expat:

1. Register your address: On arriving in Luxembourg, register with your local commune (municipality). Your details will be passed to the ACD, which will then assign you a tax identifier and a tax class based on the information you submit.
2. Obtain your tax number: The ACD will issue you a Luxembourg National Identification Number (matricule), which is required for all dealings with tax and social security authorities.
3. Receive your tax card (fiche de retenue d’impôt): Your employer relies on this card to apply the correct withholding rate to your monthly salary. Review it carefully to confirm that the appropriate tax class has been assigned.
4. Gather your documents: Assemble all relevant income records, including payslips, statements of overseas income, investment income documentation, rental income details, and any foreign tax certificates you may need to claim relief under a double taxation treaty.
5. Complete the tax return form: Residents use the official Modèle 100 form. This can be completed on paper and posted to the ACD, or filed electronically through the MyGuichet.lu portal.
6. Submit by the deadline: Ensure your return is filed by 31 March. Should you need additional time, an extension may be requested from the ACD — but the request must be submitted before the deadline expires.
7. Pay any outstanding tax: Where the amount withheld at source does not cover your total liability — which can occur for couples filing jointly under Class 2 or individuals with multiple income streams — settle the remaining balance once you receive the ACD’s assessment.

The consequences of missing the deadline can be substantial. Late filing carries a penalty of 10% of the tax amount due, with an additional 0.6% charge applied for every further month of delay. Always file on time, or secure a formal extension beforehand.

What are the tax implications of leaving Luxembourg?

Departing Luxembourg and ceasing to be a tax resident there brings with it specific obligations. The fundamental principle is that Luxembourg tax residency — and the associated filing requirement — remains in place until the year of departure has been settled through a final tax return.

For the year in which you leave, you must file a final return (Modèle 100) covering the period from 1 January to your actual date of departure, ensuring that all income earned during your partial year of residence is correctly assessed. The applicable tax treatment can be adjusted during the year and, at the latest, when the annual tax return is submitted. Once you have left, you revert to non-resident status and become liable only for tax on Luxembourg-source income — such as rental proceeds from property you retain in Luxembourg, or a Luxembourg pension.

Luxembourg does not currently have a broad personal-level exit tax comparable to those in force in some other countries — for instance, Germany and the Netherlands both impose charges on unrealised gains in substantial shareholdings when a taxpayer emigrates. That said, if you hold shares in a Luxembourg company that constitutes a “substantial participation” (generally a holding of more than 10%), gains realised within six months before or after your departure may remain taxable in Luxembourg, depending on the terms of the relevant DTT.

To formally sever your Luxembourg tax residency, you must notify your local commune and the population registry (Office National de la Population) of your departure. This notification is then relayed to the ACD. Failure to deregister correctly can result in continued Luxembourg tax obligations even after you have physically left the country. Establishing tax residence in Luxembourg is relatively straightforward, and individuals who both move to Luxembourg and retain close ties with another jurisdiction may find themselves with dual tax residence. In such cases, the tie-breaker provisions of the applicable double taxation treaty must be applied to determine which country holds primary taxing rights. The same analysis applies when departing — treaty tie-breaker rules govern the allocation of taxing rights following relocation.

If you have been making use of the impatriate tax regime, bear in mind that the regime terminates when you leave Luxembourg employment. Any ongoing compliance matters should be addressed with a qualified adviser well before your departure date.

Practical tips for managing taxes as an expat in Luxembourg

• Record your arrival date precisely. An individual becomes a Luxembourg tax resident upon having a domicile in the country and remaining there for more than six months in a year. Keeping clear documentation of when you first took up residence is important, as this date determines the start of your first tax year as a resident and may influence how income earned earlier in the year is treated.
• Verify your tax class without delay. Your tax class governs the amount deducted from your salary each month. The tax administration automatically assigns a class to each individual based on the details provided when registering with the municipal authorities. If your personal circumstances change — through marriage, separation, or the birth of a child — inform the ACD promptly, since an incorrect tax class can result in either underpayment or overpayment of tax.
• Move quickly if you qualify for the impatriate regime. If you are eligible for the impatriate tax regime, prompt action is essential. The list of taxpayers who have elected for the regime must be submitted to the competent tax office no later than 31 January of the year following the relevant tax year. Missing this deadline may mean forfeiting a very significant tax advantage.
• Make proactive use of double taxation treaties. If you continue to receive pension, rental, or investment income from your previous country of residence, check whether a DTT applies and obtain the necessary documentation to claim relief. Relief is rarely automatic — you may be required to make a formal application in both countries.
• Seek advice before disposing of assets. Whether selling property in Luxembourg or abroad, or transferring shares, the tax consequences depend on the nature of the asset, the length of time you have held it, and whether a DTT modifies the default rules. Professional advice before completing any significant disposal is essential.
• Maintain thorough records of all foreign income. Because residents of Luxembourg are taxed on their worldwide income — covering all earnings both within and outside the country — overseas bank interest, rental receipts, dividends, and pensions must all be declared, even where they have already been taxed at source in another country.
• Consider engaging a cross-border tax specialist. Luxembourg’s tax rules interact with dozens of treaty partners, EU directives, and domestic legislative provisions in ways that can be highly intricate. A qualified tax adviser — ideally one with experience of expat or cross-border matters — can help you organise your affairs efficiently, prevent double taxation, and maintain compliance. The Ordre des Experts-Comptables in Luxembourg keeps a register of qualified professionals.
• Keep up to date with annual changes. The personal income tax scale is being adjusted by adding 2.5 index brackets from 2025 onwards, building on the neutralisation of four index brackets that took place in 2024 and delivering a meaningful reduction in the tax burden across all households. Luxembourg’s tax framework is continuously evolving, so reviewing the ACD website and the Ministry of Finance’s publications at the beginning of each tax year is strongly advisable.

Frequently asked questions about taxation in Luxembourg

When do I become a tax resident in Luxembourg?

Luxembourg law provides two alternative tests for determining tax residence: the fiscal domicile (domicile fiscal) and the habitual abode (séjour habituel). An individual who satisfies either test will be treated as a Luxembourg tax resident and taxed on their worldwide income. In practical terms, residency is established either by setting up a home in Luxembourg or by being physically present for more than six months or 183 days within a calendar year.

Does Luxembourg tax my worldwide income?

Yes — tax residents of Luxembourg are liable for income tax on all of their income wherever in the world it arises. Non-residents, by contrast, are taxed only on income originating in Luxembourg. Relief from double taxation on foreign-source income is generally accessible under Luxembourg’s broad network of DTTs, provided you can show that the income has already been subject to tax in another country.

What is the top income tax rate in Luxembourg?

As of 2025, Luxembourg income tax is assessed on a progressive scale running from 8% on taxable income above €13,230 to 42% on income in excess of €234,870. A solidarity surcharge of between 7% and 9% is imposed on top of income tax for higher earners, and the maximum combined rate — including all relevant contribution charges and the solidarity surcharge — is capped at 45.78%. Always consult the ACD website for the most up-to-date brackets.

Is there a wealth tax for individuals in Luxembourg?

No wealth tax applies to private individuals in Luxembourg. This is a meaningful distinction from countries such as Spain, where a net wealth tax is charged above certain thresholds. Corporate entities and certain investment funds are subject to a net wealth tax, but this does not affect individual taxpayers.

When is the deadline to file a tax return in Luxembourg?

Residents and non-residents with income from Luxembourg sources must file their annual tax declaration by 31 March of the year following the relevant tax year. The ACD can grant extensions upon request, provided the request is submitted before the deadline. Late filing attracts a penalty of 10% of the tax amount due, plus an additional 0.6% for each month the return remains outstanding.

How does the impatriate tax regime work for newly arrived expats?

From 1 January 2025, the regime provides a 50% tax exemption on remuneration capped at €400,000, equating to a maximum annual tax exemption of €200,000. Eligibility requires that the individual is highly qualified, earns an annual base salary of at least €75,000, and has not been subject to Luxembourg tax, resident in Luxembourg, or living within 150 km of the Luxembourg border during the five years prior to commencing their Luxembourg employment. The regime applies from the year of arrival and may continue for up to eight subsequent years.

How are pensions received from abroad taxed in Luxembourg?

Foreign pensions paid to a Luxembourg tax resident are generally included in their worldwide taxable income and assessed at progressive income tax rates. However, the double taxation treaty between Luxembourg and the country paying the pension may allocate the exclusive right to tax that pension to the source country, or may permit Luxembourg to grant a credit for tax already withheld. The precise treatment turns on the wording of the applicable treaty. Always review the relevant DTT and check the ACD treaty list to confirm how your pension will be treated.

How do I find out if Luxembourg has a double taxation agreement with my home country?

Luxembourg has concluded a total of 94 double taxation treaties as of 2025, covering the vast majority of the world’s major economies. An authoritative and regularly updated list of all these treaties is available on the website of the Luxembourg Inland Revenue (ACD). Visit the ACD conventions page to check whether a treaty exists with your home country and to review its current terms.