European Evergreen Fund Structures Compared: UCI Part II, RAIF, ELTIF, LTAF, QIAIF

Private markets are no longer just for pension funds and endowments. A growing number of evergreen fund vehicles now make it possible for wealth managers and, in some cases, individual investors to access private equity, real estate, infrastructure and credit without a traditional 10-year lock-up. But the regulatory regimes behind these funds differ enormously and those differences have real consequences for who can invest, how easily you can get your money back, and what protections you actually have.

This guide compares the five structures that matter most in today's European evergreen landscape. If you advise clients, allocate capital for a family office, or are simply exploring private market options for your own portfolio, this is a practical starting point.

Traditional private market funds are closed-ended. You commit capital up front, the manager draws it down over several years, builds a portfolio, harvests returns and eventually winds the fund down - typically over a decade or more. That model works well for large institutions with long time horizons, but it's a poor fit for most private wealth clients.

Evergreen (or "semi-liquid") funds change the equation. They stay open indefinitely, accepting new capital on a regular basis and offering periodic redemptions - monthly, quarterly, or sometimes less frequently. The trade-off is that redemptions are typically gated and subject to notice periods, because the underlying assets remain illiquid.

The challenge is that Europe doesn't have a single rulebook for these vehicles. Each regulatory regime imposes different requirements on who can invest, how the fund is supervised, and what restrictions apply.

Luxembourg UCI Part II - the regulated route to retail

If a manager wants to reach retail investors in Luxembourg and potentially elsewhere in Europe, the Part II UCI is the natural choice among Luxembourg-domiciled alternatives. Unlike the RAIF or the SIF, a Part II fund can accept any type of investor - including individuals without minimum subscription thresholds.

The price of that retail access is full CSSF supervision. The product must be authorised before launch, its prospectus is reviewed by the regulator, and it is subject to ongoing oversight including risk-spreading rules. The CSSF's Circular 25/901, published in December 2025, modernised the diversification framework and now calibrates restrictions to the investor profile - retail-facing compartments face tighter limits than those reserved for well-informed or professional investors.

Part II UCIs can invest in all asset types, though they operate under more prescriptive constraints than a RAIF. For managers building evergreen vehicles aimed at wealth management platforms, the Part II fund offers a credible, fully regulated wrapper with the flexibility to hold private assets alongside a liquid sleeve.

Read more: What is a Luxembourg UCI Part II fund?

Luxembourg RAIF - speed to market, but only for informed investors

The Reserved Alternative Investment Fund has become one of Luxembourg's fastest-growing fund types since its introduction in 2016. Because the RAIF is not directly supervised by the CSSF, it can launch significantly faster than a regulated product - there is no product approval step. The trade-off is that it must appoint an authorised external alternative investment fund manager (AIFM), which is itself supervised. So the regulation is there, but it sits one layer up at the manager level rather than at the fund itself.

For investors, the key constraint is eligibility. RAIFs are strictly reserved for "well-informed" investors - which under Luxembourg law means institutional investors, MiFID professional investors, or individuals who either commit at least €100,000 or have been certified as having the relevant expertise by a bank, management company or AIFM. This was updated in 2023 when the threshold was lowered from €125,000 to align with EU standards.

On the asset side, RAIFs can invest in practically anything, subject to risk-spreading requirements. This flexibility makes them popular for private equity, real estate and credit strategies. For wealth managers distributing cross-border, RAIFs can be passported to professional investors throughout the EU via the AIFMD marketing passport - but retail distribution remains off limits.

Read more: What is a Luxembourg RAIF?

EU ELTIF — the only true EU-wide retail passport for private markets

The European Long-Term Investment Fund occupies a unique position in this landscape. It is not a domicile-specific vehicle but an EU-wide label that can be applied to an alternative investment fund in any Member State. What makes it significant is the passport: an ELTIF authorised in, say, Luxembourg can be marketed to retail investors across the entire EU without requiring additional national distribution authorisations. No other private markets fund structure offers that.

The ELTIF framework was substantially overhauled in January 2024 with the entry into force of ELTIF 2.0. The reforms removed the €10,000 minimum investment for retail investors, dropped the previous cap of 10% of portfolio for smaller investors, and broadened the universe of eligible assets — including opening the door to fund-of-fund strategies, STS securitisations and green bonds. At least 55% of the ELTIF's capital must be invested in eligible long-term assets (down from 70% under the original rules), leaving meaningful room for a liquid buffer.

The ELTIF product rules are more prescriptive than what you would see in a RAIF or QIAIF — covering eligible assets, diversification, borrowing limits (50% NAV for retail ELTIFs, 100% for professional-only) and redemption mechanics. Regulatory technical standards published in October 2024 add further detail on redemption policies and liquidity management. For managers willing to work within these guardrails, the reward is unparalleled reach.

The momentum is real. As of early 2025, the ESMA register lists over 150 authorised ELTIFs, with more than 80 open to retail investors. Luxembourg leads the count, followed by France, Italy and Ireland.

Read more: What is an ELTIF?

UK LTAF - Britain's answer, with a built-in braking mechanism

The Long-Term Asset Fund was introduced by the FCA in late 2021 and is still a relatively young product. It was designed primarily with defined contribution pension schemes in mind - giving those schemes a compliant vehicle to access illiquid assets like infrastructure, private credit and real estate. Since mid-2023, the FCA has progressively broadened access: the LTAF is now classified as a Restricted Mass Market Investment, making it available to retail investors subject to risk warnings and appropriateness assessments.

The defining feature is the liquidity framework. LTAFs cannot deal more frequently than monthly, and investors must give at least 90 days' notice before redeeming. Many funds in practice adopt longer notice periods. The fund must invest predominantly (at least 50%) in long-term, illiquid assets and can borrow up to 30% of net asset value.

As of March 2025, approximately 12 umbrella LTAFs and 22 sub-funds have been authorised by the FCA, and industry surveys suggest the majority of UK asset managers with a European presence are actively considering a launch. The LTAF is regulated and supervised by the FCA, must appoint an authorised depositary, and is managed by a full-scope UK AIFM.

For UK-based wealth managers and pension schemes, the LTAF fills a genuine gap. Its limitation is geography: it is a UK-only product, domiciled in the UK, with no EU passport.

Read more: What is a UK LTAF?

Irish QIAIF — maximum flexibility for qualifying investors

Ireland's Qualifying Investor Alternative Investment Fund is the workhorse of Irish fund structuring for institutional and sophisticated capital. Regulated and authorised by the Central Bank of Ireland, the QIAIF imposes virtually no investment or borrowing restrictions - making it the most flexible of the structures on this list from a portfolio construction standpoint.

The catch is who can use it. QIAIFs are limited to "qualifying investors" who must satisfy both an eligibility test (professional client under MiFID, or certified as an informed investor) and a minimum initial subscription of €100,000. The Central Bank offers an exemption for "knowledgeable persons" - effectively fund management personnel — but the door is firmly closed to ordinary retail investors.

One of the QIAIF's practical advantages is speed. The Central Bank operates a 24-hour authorisation process: submit compliant documentation by 3pm on a business day and you have an authorised fund the next morning. This fast-track process, combined with Ireland's deep ecosystem of administrators, depositaries and legal advisors, has made the QIAIF a go-to for managers who need to launch quickly.

For cross-border distribution, a QIAIF that appoints an EU AIFM can use the AIFMD marketing passport to reach professional investors throughout the EEA.

Read more: What is an Irish QIAIF?

The right structure depends on who you are trying to reach and where.

If your objective is broad retail distribution across EU markets, the ELTIF is currently the only game in town. No other wrapper gives you a harmonised retail passport that works from Lisbon to Helsinki. The Luxembourg UCI Part II is an alternative for managers who want a regulated, retail-accessible product but are comfortable distributing country by country under national rules.

If you are building for wealth management clients, family offices and professional investors with ticket sizes above €100,000, the field is wider. The Luxembourg RAIF offers speed and flexibility but requires well-informed investor status. The Irish QIAIF provides maximum asset flexibility and remarkably fast authorisation. Both can passport to professional investors across the EU via AIFMD.

For UK pension schemes and UK-domiciled wealth, the LTAF is purpose-built. It combines FCA regulation with a redemption framework that honestly reflects the illiquid nature of the underlying assets - the 90-day notice period is a feature, not a bug.

The trend toward "retailisation" of private markets is structural. Regulators across Europe are actively adapting their frameworks to accommodate it - the ELTIF 2.0 overhaul, the CSSF's December 2025 modernisation of Part II UCI rules, the FCA's progressive broadening of LTAF access, and the Central Bank of Ireland's ongoing refinements to the QIAIF regime all point in the same direction.

For wealth managers, the practical implication is that the universe of investable evergreen structures is getting larger, more accessible and more complex at the same time.