Luxembourg Tax Residency Guide

183-Day Physical Presence Test

• Primary test — 183+ days: An individual is considered a tax resident of Luxembourg if physically present in Luxembourg for 183 days or more in the calendar year. Both the day of arrival and departure count as days of presence.
• Calendar year: The 183-day test applies to the calendar year (1 January to 31 December). Presence in the previous or following year is not aggregated.
• Short-term visits: Days spent in Luxembourg for holidays, business trips, or personal visits all count toward the 183-day total.

Primary Residence (Foyer d'Habitation) Test

• Foyer d'habitation: An individual is also considered a tax resident if they maintain their primary residence (foyer d'habitation) in Luxembourg. This is the place where the individual and their family habitually live.
• Centre of economic interests: If the individual's centre of economic interests (centre des intérêts économiques) is in Luxembourg — where their main professional activities, business operations, and significant investments are located — they may also be deemed resident.
• Dual criteria: The test is disjunctive — either the 183-day rule OR the foyer d'habitation/centre of interests test may establish residency.

Worldwide Income Taxation for Residents

• Worldwide income: Luxembourg tax residents are subject to tax on their worldwide income — employment income, business profits, investment income, rental income, and capital gains from all sources, both domestic and foreign.
• Foreign tax credit: To avoid double taxation, residents may claim a foreign tax credit (Crédit d'Impôt Étranger) for taxes paid abroad on foreign-source income. The credit is limited to the Luxembourg tax attributable to the foreign income.
• Treaty relief: Where a tax treaty applies, the treaty provisions override domestic law and typically allocate taxing rights between Luxembourg and the source country.

Non-Resident Taxation

• Source-only taxation: Non-residents are taxed only on Luxembourg-source income. The main categories include: employment income for work performed in Luxembourg, business income attributable to a Luxembourg permanent establishment, rental income from Luxembourg real estate, and certain investment income (dividends, interest) from Luxembourg sources.
• Optional resident treatment: Non-residents who earn at least 90% of their worldwide income in Luxembourg may elect to be taxed as residents (applying progressive rates with deductions).

No Exit Tax

• No exit tax: Luxembourg does not impose an exit tax upon the departure of an individual. Individuals may cease tax residency without an immediate tax charge on unrealised gains or deferred income.
• Cessation of residency: An individual who leaves Luxembourg ceases to be a tax resident from the date of departure, provided they do not maintain a foyer d'habitation or centre of economic interests in Luxembourg.

DTA Tiebreaker Rules

• Tiebreaker hierarchy (OECD Model): In dual residency situations, Luxembourg's tax treaties resolve conflict using the standard OECD tiebreaker: (a) permanent home available, (b) centre of vital interests (personal and economic relations), (c) habitual abode, (d) nationality, (e) mutual agreement procedure (MAP).
• Application: The tiebreaker determines the single country of residence for treaty purposes. The individual is treated as a resident of only one country for the application of treaty benefits.

Tax Residence Certificate (Certificat de Résidence Fiscale)

• Certificate: The tax residence certificate is issued by the ACD (Administration des contributions directes) and confirms the tax residency status of an individual or entity for treaty relief purposes.
• Application: The taxpayer must apply to the ACD with supporting documents: identity documents, proof of residence address, tax return for the previous year, and employment contract or business registration.
• Validity: The certificate is typically valid for the calendar year and requires annual renewal.

Extensive DTT Network — 85+ Treaties

• Network size: Luxembourg has concluded double tax treaties with over 85 countries — one of the most extensive treaty networks in the world.
• Key partners: All EU member states, major OECD countries (US, UK, Japan, Canada, Australia, Switzerland, Norway), emerging markets (China, India, Brazil, Russia, South Africa, UAE, Saudi Arabia, Singapore, Hong Kong), and many others.
• Treaty benefits: Reduced WHT rates on dividends (0–15%), interest (0–10%), and royalties (0–10%). Many treaties provide 0% WHT on dividends for qualifying holdings.

FAQs

How many days can I be outside Luxembourg without losing residency?

There is no specific number of days that automatically breaks residency. If you maintain your primary residence (foyer d'habitation) in Luxembourg, you may remain resident even if you are abroad for extended periods. However, if you are absent for more than 183 days and do not maintain a home in Luxembourg, you may be considered a non-resident.

Can I be a tax resident of Luxembourg and another country?

Yes, dual residency is possible under domestic laws of both countries. The applicable tax treaty will then determine which country has primary taxing rights through the tiebreaker rules.

Is Luxembourg a good jurisdiction for cross-border workers?

Yes, Luxembourg has a very large cross-border worker population (approximately 200,000+ daily commuters from France, Belgium, and Germany). Specific tax treaties with neighbouring countries allocate taxing rights for cross-border workers (typically taxed in Luxembourg with special provisions).

Disclaimer

This guide provides general information about Luxembourg tax residency for the 2026 tax year. Tax laws and rates may change. Always consult with a qualified Luxembourg tax advisor (conseil fiscal) or the ACD directly for advice specific to your situation. InvestmentKit does not provide tax advice.