Knowledge
Why so many private equity funds run through Luxembourg, and how the two workhorse vehicles — the SCSp and the SARL — fit together.
Last updated 4 July 2026
In brief: A European private equity fund is typically built from two Luxembourg vehicles doing different jobs. The SCSp — a special limited partnership — is the fund itself, the vehicle that limited partners commit capital to. The SARL — a private limited liability company — is used for the holding entities beneath it (MasterCo, LuxCo) that channel investment into each portfolio company. Luxembourg is chosen for tax neutrality, its wide treaty network, legal familiarity, and AIFMD passporting — not for secrecy.
Luxembourg has become the default domicile for European private equity for a set of practical, mutually reinforcing reasons. None of them is exotic; taken together they make it the path of least resistance for a pan-European fund raising capital from investors in many different countries.
Tax neutrality. A well-structured Luxembourg holding chain is designed to be broadly tax-transparent or tax-neutral, so that investors are taxed in their own jurisdiction as if they had invested directly — the structure aims not to add a layer of tax that would not arise on a direct investment. The SCSp itself is fiscally transparent for Luxembourg corporate income tax purposes.
Double-tax treaty network. Luxembourg maintains an extensive network of double-taxation treaties, which can reduce withholding tax on dividends, interest, and gains flowing up from portfolio companies across Europe. This matters most for the holding companies (the SARLs) that actually receive that income.
Legal familiarity. Fund managers, lawyers, administrators, and institutional investors have all seen the same structures many times. Documentation is standardised, the regulator is experienced with alternative funds, and the service-provider ecosystem is deep.
AIFMD. Under the EU Alternative Investment Fund Managers Directive, a fund managed from Luxembourg can be marketed to professional investors across the EU under a single passport, rather than negotiating 27 separate national regimes. That reach is a significant part of the appeal for a fund raising internationally.
The SCSp — Société en Commandite Spéciale, or special limited partnership — is the vehicle most European PE funds use as the fund itself. It is a partnership without separate legal personality, modelled closely on the Anglo-Saxon limited partnership that managers and investors already understand. It has two kinds of partner:
Commercially, the SCSp is where the economics of the fund live: capital commitments, drawdowns, the management fee, and the split of profits between LPs and the GP. That profit split — the GP's performance share after LPs receive their capital and a preferred return — is the carried interest waterfall, which operates at this partnership level and is distinct from the equity waterfall inside any one portfolio company. For definitions of the partnership and fund terms used here, see the glossary.
The SARL — Société à responsabilité limitée, a private limited liability company — is Luxembourg's equivalent of a UK private limited company. Unlike the SCSp, it has separate legal personality and is itself a taxpayer, which is precisely why it is used for the holding entities beneath the fund rather than for the fund.
A holding SARL can hold shares in and make loans to portfolio companies, receive dividends and interest, claim treaty benefits, and — where conditions are met — benefit from participation-exemption relief on qualifying dividends and capital gains. It is a corporate body that can enter contracts, grant security to lenders, and be the counterparty on the shareholder loans and preference shares used to fund the acquisition. A transparent partnership like the SCSp cannot do these jobs cleanly, which is why the two vehicle types are combined rather than substituted.
In a typical buyout the chain runs from the LP investors at the top down to the operating business at the bottom. The SCSp sits at the top as the fund; a series of SARLs sit beneath it as the holding layer; and the acquisition entities (TopCo, HoldCo, OpCo) sit at the bottom, often incorporated in the target's own jurisdiction.
Each vehicle earns its place. The SCSp fund aggregates LP capital and applies fund-level economics. The MasterCo SARL is the master holding company that typically sits directly beneath the fund and holds the portfolio; where a deal also takes third-party co-investment, a co-investment SPV sits alongside MasterCo's chain into the same deal. The LuxCo SARL is the per-deal or per-cluster holding company that actually subscribes for the instruments in TopCo. Below LuxCo, TopCo, HoldCo, and OpCo are the acquisition structure — the point at which senior debt is raised and the trading business is owned. The mechanics of why the chain has this many layers are covered in the broader note on PE fund structures.
| Layer | Vehicle | Role |
|---|---|---|
| Fund | SCSp | Raises LP capital; fund-level economics and carry |
| MasterCo | SARL | Master holding company beneath the fund |
| LuxCo | SARL | Per-deal holding company; subscribes for instruments in TopCo |
| TopCo ↓ | Local | Acquisition structure; senior debt and operating business |
A Luxembourg structure only delivers its intended treatment if the holding companies have genuine substance — that they are real decision-making entities rather than empty letterboxes. In practice this means resident directors, board meetings held in Luxembourg, local bank accounts, adequate premises and staff or outsourced administration, and books and records kept locally. Tax authorities and treaty counterparties increasingly test for this.
The EU Anti-Tax Avoidance Directives (ATAD) reinforce the point. Among other measures, ATAD introduced interest-limitation rules that cap the deductibility of net borrowing costs, anti-hybrid rules that neutralise mismatches between how an instrument is treated in two countries, and general anti-abuse provisions. For a PE structure these bite directly on the shareholder loans and preference shares running through the SARLs, and on the assumption that treaty benefits are available. The practical consequence is that instrument terms — rates, compounding, PIK treatment — need to be modelled accurately, because their tax treatment is not guaranteed and depends on the structure standing up to scrutiny.
Why this matters for the cap table. Because CapTab is transaction-based, every subscription and loan drawdown at each SARL and acquisition entity is recorded as a transaction, and the cap table for any date is derived from that register. That makes it possible to show the full Luxembourg chain — the ownership percentage at each level from the SCSp down to OpCo — and to reconcile the instruments held by each holding company against the terms that drive their tax and accrual treatment.
None of the above is a substitute for tax or legal advice on a specific structure; jurisdictions, rates, and rules change. The purpose here is to explain the building blocks — the SCSp as the fund and the SARL as the holding company — so that the chain from LP investor to operating company reads as a deliberate design rather than a stack of anonymous boxes.
Every SARL, every instrument, every ownership percentage from the SCSp down to OpCo — derived from the transaction register.