Substance requirements in Luxembourg

Substance is what separates a treaty benefit from a tax bill

A Luxembourg company can look complete on paper — registered, filed, compliant — and still fail the test that matters most. When a tax authority or a treaty partner asks whether the company is a genuine economic actor or merely a conduit routing income through the Grand Duchy, the answer decides real money. Pass, and the company keeps access to Luxembourg's 88 double tax treaties and the EU directives. Fall short, and those benefits can be denied, income requalified and withholding taxes reinstated.

This is why substance is a build, not a formality. Qualified directors who actually decide, meetings held and minuted in Luxembourg, staff and premises proportionate to the activity, and a clean answer to the Principal Purpose Test — each element is evidence that the company's presence is real. The sections below break down what that looks like in practice.

Key Substance Elements

Board of Directors

The composition and conduct of the board is central to demonstrating substance. Directors should have appropriate qualifications and actively manage the company.

Requirement	Best Practice
Number of directors	Minimum 2 qualified directors
Residency	Majority Luxembourg/EU resident
Qualifications	Relevant industry/financial experience
Meetings	Regular board meetings in Luxembourg
Decision-making	Strategic decisions made in Luxembourg
Availability	Directors available for urgent matters

Physical Presence

• Registered office: Official address for legal correspondence
• Office space: Dedicated premises for business activities
• Meeting rooms: Facilities for board meetings
• IT infrastructure: Proper systems and data management
• Bank accounts: Local banking relationships

Personnel

Qualified employees in Luxembourg demonstrate genuine economic activity. The level of staffing depends on the company's activities and complexity.

Role	Function
Compliance Officer	Regulatory compliance and AML
Finance/Accounting	Financial management and reporting
Investment Management	Portfolio monitoring (for holding companies)
Administration	Corporate secretarial functions

Regulatory Requirements

ATAD (Anti-Tax Avoidance Directive)

ATAD requires substance for companies to benefit from intra-group arrangements. Key provisions include:

• General Anti-Abuse Rule (GAAR)
• Interest limitation rules
• Exit taxation
• CFC rules for passive income

Tax Treaty Benefits

To access Luxembourg's 88 tax treaties, companies must demonstrate:

• Beneficial ownership of income
• Not being a conduit company
• Principal Purpose Test (PPT) compliance
• Genuine economic activity

Substance Documentation

Evidence to Maintain

• Board meeting minutes held in Luxembourg
• Signed resolutions and decisions
• Employment contracts for Luxembourg staff
• Office lease agreements
• Bank statements showing local operations
• IT and infrastructure evidence
• Travel records of directors
• Time allocation records

Our Services

• Director services: Experienced professionals for your board
• Registered office: Premium office locations in Luxembourg
• Substance assessment: Evaluation of current substance level
• Compliance monitoring: Ongoing substance maintenance
• Personnel solutions: Staffing and secondment arrangements
• Documentation: Corporate governance and record-keeping