Luxembourg Cross-Border Tax Guide

183-Day Residency Rule

• 183-day test: An individual is considered a tax resident of Luxembourg if present for 183 days or more in the calendar year. Both arrival and departure days count.
• Consequences: Tax residents are subject to worldwide income taxation under progressive IIT rates (0%–45.78%).
• Primary residence test: Even without 183 days, maintaining a permanent home (foyer d'habitation) in Luxembourg may establish residency.

Worldwide Income for Residents

• Worldwide taxation: Luxembourg tax residents are taxed on worldwide income, including foreign employment, business profits, investment income, and capital gains.
• Foreign tax credit (unilateral): Luxembourg provides a unilateral foreign tax credit (Crédit d'Impôt Étranger) for taxes paid abroad. The credit is limited to the Luxembourg tax attributable to the foreign income (per-country limitation).
• Treaty relief: Where a DTT applies, treaty provisions override domestic law and allocate taxing rights between countries.

Source-Only Taxation of Non-Residents

• Non-residents — source-only: Non-residents are taxed only on Luxembourg-source income. Foreign income is not subject to Luxembourg tax.
• Luxembourg-source income includes: employment income for work performed in Luxembourg, business income attributable to a Luxembourg PE, rental income from Luxembourg real estate, dividends from Luxembourg companies (15% WHT), and certain other Luxembourg-source payments.
• Optional resident treatment: Non-residents earning ≥90% of their worldwide income in Luxembourg may elect to be taxed as residents.

Withholding Tax (WHT) on Cross-Border Payments

• Dividends: Domestic WHT 15% (individuals). 0% under EU parent-subsidiary directive (≥10% holding, 12 months). 0%–5% under most DTTs for qualifying holdings.
• Interest: 0% WHT on interest payments to both residents and non-residents. No Luxembourg tax on cross-border interest.
• Royalties: 0% WHT on royalty payments to both residents and non-residents. No Luxembourg tax on cross-border royalties. EU Interest and Royalties Directive provides 0% for associated EU companies.

Participation Exemption — 100% on Dividends and CGT

• Qualifying conditions: ≥10% equity holding (or acquisition cost ≥ EUR 1.2 million) and ≥12-month holding period
• Dividends: 100% exempt from CIT and MBT. No subject-to-tax test (subsidiary need not be subject to comparable tax).
• Capital gains: 100% exempt from CIT and MBT on gains from sale of qualifying shareholdings.
• Anti-abuse: The exemption may be denied if the participation is held with the main purpose of benefiting from the regime (substance requirements apply).

DTT Network — 85+ Treaties (Most Extensive)

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

CFC Rules (Controlled Foreign Company)

• Limited CFC rules: Luxembourg introduced CFC rules under ATAD (EU Anti-Tax Avoidance Directive) effective 2019. The rules apply to Luxembourg companies that control a foreign entity if the foreign entity's income is predominantly passive (interest, royalties, dividends) and the effective tax rate in the foreign jurisdiction is less than 50% of the Luxembourg tax rate.
• Scope: The CFC rules are narrowly targeted and generally do not affect well-structured holding and financing operations with substance.
• Exemptions: CFC rules do not apply if the foreign entity has substantial economic activity (personnel, premises, assets).

FAQs

Can a Luxembourg holding company receive dividends from abroad tax-free?

Yes, under the participation exemption, qualifying dividends received by a Luxembourg SOPARFI from foreign subsidiaries are 100% exempt from CIT and MBT. There is no subject-to-tax test, making Luxembourg one of the most flexible holding jurisdictions.

What is the WHT rate on interest paid by a Luxembourg company to a non-resident?

0%. Luxembourg does not impose withholding tax on interest payments to non-residents. This applies to bond interest, loan interest, and other debt instrument payments.

Does Luxembourg have CFC rules that affect my holding structure?

Luxembourg has CFC rules implementing ATAD, but they are narrowly targeted and apply only to arrangements with the main purpose of obtaining a tax advantage. Well-structured holding and financing companies with proper substance are generally not affected.

Disclaimer

This guide provides general information about Luxembourg cross-border taxation 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.