Investment funds in Luxembourg - RAIF, SIF | LuxLex Law

Investment funds in Luxembourg

Launch your investment fund in Luxembourg: RAIF, SIF, UCITS, SICAR. Europe's leading fund hub. Partner lawyer guidance. Free consultation.

8 min read Last updated:
Get Connected

Describe your project and we will connect you with a qualified lawyer.

In summary: Luxembourg is Europe's largest investment fund center. Options include RAIF (fast setup, no CSSF approval), SIF (regulated, CSSF approval), UCITS (retail funds, EU passport), and SICAR (risk capital). Minimum investment €100,000 for AIFs.

Written and reviewed by the yet.lu legal editorial team · Updated on

Luxembourg's fund toolkit: matching structure to strategy

Luxembourg is the world's second-largest fund domicile after the United States and Europe's leading investment fund centre, with over €5.5 trillion in assets under management. That scale matters less to a manager than what it buys: a full menu of vehicles, each answering a different question about supervision, speed and who is allowed to invest.

The most common misreading is that a RAIF is "unregulated." It is not directly product-approved by the CSSF, which is exactly what makes it fast to launch — but it can only exist with an authorised AIFM, so the oversight sits at the manager level rather than the product level. Most alternative vehicles here are built for professionals: the well-informed investor threshold is €100,000, not a retail entry point. The structures below set out the RAIF, SIF, UCITS and SICAR side by side so the trade-offs are explicit.

Fund Structures

RAIF - Reserved Alternative Investment Fund

The RAIF combines the flexibility of an alternative investment fund with fast time-to-market. It is the preferred choice for private equity, real estate, and hedge fund strategies.

Feature Details
Regulator Not directly supervised by CSSF
Launch time 2-4 weeks
AIFM requirement Mandatory (external or internal)
Eligible investors Well-informed investors only
Minimum investment €100,000
Legal forms SICAV, SICAF, FCP, SCS, SCSp

SIF - Specialized Investment Fund

The SIF is a regulated fund product for alternative investments. It requires CSSF approval but offers maximum flexibility in terms of investment strategies.

Feature Details
Regulator Supervised by CSSF
Launch time 3-6 months
Eligible investors Well-informed investors only
Minimum investment €100,000
Risk diversification 30% maximum per asset

UCITS - Retail Investment Funds

UCITS are harmonized retail investment funds that can be marketed to investors across the EU. Luxembourg is the leading European domicile for UCITS, hosting over 60% of European cross-border funds.

Feature Details
Regulator Supervised by CSSF
EU passport Yes - marketable across all EU states
Eligible investors Retail and institutional
Minimum investment None
Eligible assets Transferable securities, money market, UCITS funds

SICAR - Risk Capital Investment Company

The SICAR is designed for investments in venture capital and private equity. It offers favorable tax treatment for qualifying investments.

Feature Details
Regulator Supervised by CSSF
Investment focus Risk capital only
Eligible investors Well-informed investors
Tax regime Exempt on income from risk capital

Why Luxembourg for Funds?

  • European hub: Distribution to 70+ countries
  • Regulatory expertise: CSSF with deep fund experience
  • Service provider ecosystem: Leading administrators, custodians, auditors
  • Flexible structures: Multiple fund vehicles and umbrella structures
  • Tax efficiency: No subscription tax for institutional investors
  • Political stability: AAA-rated jurisdiction

Our Services

  • Fund structure optimization
  • RAIF, SIF, UCITS, SICAR formation
  • CSSF authorization support
  • Fund documentation (prospectus, PPM, articles)
  • AIFM selection and appointment
  • Ongoing legal and regulatory support

Frequently Asked Questions

A RAIF (Reserved Alternative Investment Fund) is an unregulated alternative investment fund reserved for well-informed investors. It must appoint a licensed AIFM but is not directly supervised by the CSSF, allowing for faster time-to-market.

Find Your Lawyer

Describe your project and we will connect you with a qualified lawyer.

  • Free referral
  • Response within 24 hours
  • Verified lawyers

Free and no obligation — we connect you with independent lawyers registered with the Luxembourg Bar.

Request a Consultation

* Required fields. We typically respond within 24 hours.