1. What transparency covers, and what it does not

The special limited partnership has no legal personality (Article 320-1 of the Law of 10 August 1915), and Luxembourg tax law treats it as a pass-through for the taxes levied on income and wealth: under Article 175 LITL the corporate income tax applies to the partners, not to the partnership. Income and gains are determined at the level of the SCSp and allocated to the partners according to the limited partnership agreement (LPA), and each partner is taxed, if at all, under its own rules. The legal form itself is covered in our SCSp guide; the position tax by tax is as follows.

Three consequences follow. First, transparency is a Luxembourg characterisation; the investor's own country applies its own classification, and the vehicle can be opaque there. Second, transparency does not neutralise taxes levied below the vehicle: withholding tax on dividends or interest paid by portfolio companies, and the investor's ability to recover it under a treaty, depend on how the source country treats a payment to a partnership and to the investors behind it. Third, the general partner is not transparent. The GP Sàrl is an ordinary taxable company subject to corporate income tax, municipal business tax and net wealth tax, including the minimum net wealth tax, and it files its own returns and annual accounts.

VAT deserves a separate remark because it is often confused with the AIF question. Since the AIFM Law of 12 July 2013, the exemption for the management of investment funds in Article 44(1)(d) of the Law of 12 February 1979 on VAT extends to AIFs. Whether an SCSp is an AIF, assessed under the criteria explained in our AIF test guide, therefore matters for the cost of running it: portfolio and risk management of an AIF can be invoiced without VAT, while services supplied to a non-AIF SCSp do not qualify for the AIF management exemption merely by reason of the vehicle's legal form; their VAT treatment depends on the nature of the services, other applicable exemptions, the place-of-supply rules and the VAT status of the recipient. The exemption follows the nature of each service rather than the label on the invoice: administrative services can qualify where they are specific and essential to the management of the fund, while legal, audit and many transaction services fall outside it. For a non-AIF SCSp, its status as a taxable person and the place-of-supply rules then determine whether it must register, for instance to self-account for services received from abroad.

2. Municipal business tax and the 5% GP rule

Apart from corporate income tax on reverse hybrid income (section 4), municipal business tax (MBT) is the Luxembourg income tax that can apply to the SCSp as such. Under Article 14 LITL and the MBT Law, a partnership is within MBT when it carries on a commercial activity, or when it is deemed to do so. Circular L.I.R. n° 14/4 of 9 January 2015 explains both limbs.

The activity limb

An SCS or SCSp that qualifies as an AIF under the Law of 12 July 2013 is deemed not to carry on a commercial activity within the meaning of Article 14, n° 1 LITL, because an AIF by definition invests according to a defined investment policy. For a non-AIF partnership the question is factual: managing a portfolio within the ordinary bounds of private wealth management is not commercial, while exploiting the substance of the portfolio through a turnover of substantial assets (Umschichtung) can be. The circular, drawing on case law, points to the number of acquisitions, quick resales and short holding periods as indicators, and rejects schematic tests: neither the size of the holdings nor the sale of some assets within a relatively short period is decisive on its own. A buy-and-hold SPV that acquires one company and exits years later sits comfortably on the asset-management side.

The deeming limb: the 5% rule

Under Article 14(4) LITL, a limited partnership (SCS or SCSp) is deemed to carry on a commercial activity in full where a general partner that is a capital company (such as an SA, Sàrl or SCA) holds at least 5% of the partnership interests. This is the Luxembourg version of the German Gepräge doctrine. The circular is explicit that the rule applies independently of the activity analysis, so AIF status does not neutralise it: an AIF partnership whose corporate GP holds 5% is within MBT on its whole profit, and its partners' share is commercial income. The SICAR is the statutory exception: Article 34 of the SICAR Law disapplies Article 14(4).

The law does not define how the 5% is measured, and the circular refers only to "parts d'intérêts". The disciplined approach is therefore to keep the corporate GP below 5% on every measure that could be argued:

• Capital and commitment. The GP's capital contribution is nominal. Sponsor commitments, which LPs often expect at 1% to 2% or more, are made through a separate limited partner, not through the GP.
• Profit share. Carried interest is allocated to a carry vehicle admitted as a limited partner rather than to the GP. Whether a profit allocation to the GP counts towards its "parts d'intérêts" depends on how the LPA constructs it, as a partnership right, a contractual allocation or consideration for services, but a substantial carry entitlement held by the GP is the most direct way to create the argument.
• Liquidation entitlement. The LPA waterfall gives the GP no residual claim beyond its nominal interest.
• Fees. A management fee paid to the GP or to the AIFM is consideration for services, taxed in the recipient's hands, and is not a partnership interest; it should be documented as such in the LPA.

The rule only bites on a GP that is a capital company. Some structures use a partnership or an individual as unlimited partner for that reason, but the corporate GP Sàrl remains the market standard because it ring-fences unlimited liability, and the 5% discipline is the price of that choice. The structural roles of GP, AIFM and carry vehicle are set out in our deal-by-deal SPV guide.

3. How investors are taxed

Because the SCSp is transparent, the tax analysis runs investor by investor and depends on three variables: the investor's residence, how that jurisdiction classifies the SCSp, and the character of the income allocated.

Non-resident investors

A non-resident partner is generally not subject to Luxembourg income tax on its share of income and gains derived through a non-commercial, tax-transparent SCSp. Luxembourg taxing rights arise only where Article 156 LITL gives them, and the cases most relevant to investment partnerships are the following:

• Luxembourg real estate income and gains realised through the partnership.
• Substantial participations. Gains on a participation of more than 10% in a Luxembourg company, disposed of within six months of acquisition, are Luxembourg-source income of a non-resident. Through a transparent SCSp the test is applied on a look-through basis, to the investor's share of the underlying holding. Investment horizons make the six-month case rare, and an applicable double tax treaty generally allocates the gain to the investor's state of residence.
• A Luxembourg permanent establishment to which the partnership interest or the income is attributable.
• Commercial income where the partnership carries on a business, or is deemed to under Article 14(4) LITL, in which case all partners realise Luxembourg commercial profit, subject to treaty protection.

The list is not exhaustive; the final position of each investor is assessed under Luxembourg domestic law and the applicable double tax treaty.

Outside these cases, the investor's home jurisdiction decides. If it treats the SCSp as transparent, the investor reports its share of the underlying dividends, interest and gains as they arise. If it treats the SCSp as opaque, the investor is typically taxed only on distributions or on disposal of its partnership interest, often under its domestic rules for foreign investment funds or companies. That difference is the root of the reverse hybrid problem in section 4.

Luxembourg-resident investors

A resident individual is taxed on the allocated income according to its character: dividends and interest under the rules on income from capital, gains under the rules on private gains, which tax gains realised within six months of acquisition as speculative and gains on substantial participations above 10% at reduced rates. If the partnership is commercial, the share is business income instead. A resident company includes its share in its taxable base and applies its own regime, which can include the participation exemption where its conditions are met on a look-through basis; net wealth tax on its share of the partnership's assets follows the same logic.

4. Reverse hybrids and the collective investment vehicle exemption

Article 168quater LITL, which transposes the reverse hybrid rule of ATAD 2 and applies from tax year 2022, removes transparency on a defined slice of income. It applies where:

• one or more associated non-resident investors hold, in aggregate, directly or indirectly, 50% or more of the voting rights, capital interests or profit entitlement of the SCSp;
• their jurisdiction or jurisdictions treat the SCSp as a taxable entity; and
• income allocated to them is not taxed in Luxembourg or elsewhere because of that difference in classification, rather than because the investor is itself exempt.

When the conditions are met, the SCSp becomes subject to corporate income tax on that mismatched income only. The rest of its income stays transparent.

The "associated" requirement is what keeps most syndicate vehicles out of scope. Under the ATAD 2 definitions transposed in Article 168ter LITL, investors acting together are aggregated, but an investor in an investment fund holding less than 10% of the fund and entitled to less than 10% of its profits is presumed not to act together with the others. In a widely held syndicate, no investor or group reaches 50%. The rule becomes live in feeders and co-investment vehicles with a dominant limited partner, in family-office vehicles, and where a group of investors coordinates its investment.

The collective investment vehicle exemption

Article 168quater excludes collective investment vehicles that are widely held, hold a diversified portfolio of securities and are subject to investor-protection regulation. Circular L.I.R. n° 168quater/2 of 12 August 2025 treats UCIs under the Law of 17 December 2010, SIFs and RAIFs as collective investment vehicles by presumption, and sets out how each criterion is read for other structures, including unregulated AIF partnerships:

• Widely held is assessed on all facts and circumstances, including the intended distribution of interests among unrelated investors; a limited number of investors does not by itself defeat it. The Circular presumes the condition met where no individual ultimately owns or controls more than 25% of the vehicle's capital or voting rights, a rebuttable presumption rather than an ownership ceiling. A 36-month ramp-up period from incorporation is accepted, shortfalls caused by liquidation are tolerated, and in master-feeder structures the test looks to the investors in the feeder.
• Diversification is assessed against the investment policy on a look-through basis; concentration above 30% in a single issuer, the reference point used for SIFs and RAIFs, points to a lack of diversification unless adequately justified.
• Investor protection is met by regulated funds and, for unregulated partnerships, by AIFs managed by an authorised AIFM. The Circular does not extend this to AIFs managed by a registered AIFM.

A single-asset deal-by-deal SCSp fails the diversification criterion by design, and if its manager is a registered AIFM it also falls outside the investor-protection condition as the Circular describes it. It cannot rely on the exemption and must instead confirm that the substantive conditions are not met. A feeder into a diversified master can, depending on its investor base and its manager, be in a better position. In both cases the analysis is documented before the first closing and reassessed whenever the investor composition or a relevant classification changes.

5. Carried interest after the 2026 reform

The carried interest reform (Bill No. 8590, adopted by the Chamber of Deputies on 22 January 2026) rewrote Article 99bis LITL with effect from tax year 2026, and individuals under the transitional regime of Article 213 of the AIFM Law move to the new framework. The regime governs how Luxembourg taxes carry received by Luxembourg tax-resident individuals; non-resident carry holders do not benefit from it merely because the AIF is a Luxembourg SCSp, and their position follows their residence state's rules, any Luxembourg taxing right and the applicable double tax treaty. It distinguishes two forms:

• Contractual carry, a right to a share of the AIF's outperformance not linked to an investment in it, is taxed as extraordinary income at one quarter of the individual's global rate, an effective maximum of around 11.45% before the dependency insurance contribution.
• Participation-linked carry, received through units or partnership interests in the AIF or a carry vehicle, may qualify for exemption where more than six months have elapsed between the acquisition or establishment of the participation and its realisation, subject to Article 100 LITL on substantial participations where applicable; that analysis reflects the legal form of the relevant entity and the individual's direct and indirect holdings. For this purpose the tax transparency of the AIF or carry vehicle is disregarded, so the carry keeps that treatment irrespective of the nature of the underlying income.

Eligibility is functional, not a matter of title: the regime covers individuals performing investment, risk or portfolio management functions as employees, managers, directors or partners of the AIFM, management company or fund, and those contributing to the management of the AIF under an advisory or service agreement, directly or through intermediary entities. Individuals performing purely administrative functions are excluded. The previous condition that investors first recover their full investment has been removed, which matters for deal-by-deal structures where carry is paid per transaction.

Two illustrations. A Luxembourg-resident investment professional of the AIFM entitled under an agreement with the fund to a share of its outperformance receives contractual carry, taxed at a quarter of the global rate. The same professional holding a carry participation through a carry SCSp admitted as a limited partner of the fund, realised more than six months after it was acquired, can receive participation-linked carry that is exempt, subject to the Article 100 analysis of his direct and indirect holdings, even though the carry SCSp is transparent and the underlying proceeds are dividends or gains of the fund. Article 99bis covers the qualifying carried interest only: the return on an ordinary co-investment alongside the LPs is taxed under the general rules. Two tax points connect the reform to the SCSp itself. The carry vehicle sits outside the GP, for the 5% reasons in section 2. And the LPA waterfall, the carry vehicle's own agreement and the investor reporting must describe the same economics, because the characterisation of the carry holder's income follows from those documents.

6. Filings of the partnership

Transparency removes taxes, not paperwork. The recurring obligations of an SCSp are:

• Direct tax return. The form follows the income. Form 205 applies, from tax year 2022, to transparent entities earning mainly investment income (income from movable capital or miscellaneous income), which is the usual case for an SPV or syndicate SCSp, and also carries corporate income tax on reverse hybrid income, with the non-resident investors concerned. Form 200 applies to transparent entities with commercial, agricultural or professional income and certain other income, such as rental income, and form 300 to those with commercial income within MBT. Form 205 excludes the other two. An SCSp invited by letter to file form 205 must file it even where there is no income to report, and an entity within the scope of corporate income tax files without invitation. Form 205 is filed electronically through MyGuichet.lu; forms 200 and 300 are submitted by post with an original signature. The general deadline is 31 December of the year following the tax year, subject to applicable extensions. An unregulated SCSp has no statutory obligation to publish annual accounts, but a profit computation or accounts may be needed to support a filing, and that absence does not remove reporting obligations arising from the AIFM framework, a product regime or the LPA.
• FATCA and CRS. An SCSp managed by a financial institution is typically an Investment Entity and therefore a Reporting Financial Institution. The two regimes run in parallel: for FATCA, the vehicle registers with the IRS and obtains a GIIN; for CRS, it applies the Luxembourg due diligence rules. In both, it collects self-certifications at subscription and reports to the Luxembourg tax authority by 30 June, including a nil report where it has no reportable accounts. A vehicle classified otherwise has different obligations, so the classification is recorded per vehicle.
• VAT. Registration where required, for instance to self-account for services received from abroad, and periodic returns where registered.
• Register of beneficial owners. The SCSp files its beneficial owners with the RBE under the Law of 13 January 2019 and keeps the entry current.
• GP and carry vehicle. Each has its own tax returns and, for the GP Sàrl, published annual accounts.

7. Investor tax reporting: what a tax pack contains

Transparency moves the tax computation to the investor, which turns investor reporting into the operational centre of an SCSp. Timetables are set by the fund documents; as market practice, the Invest Europe Investor Reporting Guidelines (2024) describe quarterly reports within 60 days of quarter end and annual accounts within 120 days of year end for funds holding direct investments, with capital accounts reported quarterly. Tax information needs the same discipline, because investors' own filing deadlines depend on it. A complete annual tax pack per partner contains:

• Income by character. Dividends, interest, realised gains and other income allocated to the partner, each with its source country and any foreign withholding tax suffered, so that the investor can claim credits or refunds.
• Expenses. Management fees, organisational costs and deal costs, split between items deductible in the period and items capitalised into the cost of the investment.
• Position data. Acquisition and disposal dates, cost and proceeds for each portfolio position, which drive holding-period tests, and the partner's look-through percentage in each portfolio company, which drives substantial-participation, participation-exemption and controlled-foreign-company tests.
• Four separate layers. Taxable income allocated for the period; accounting profit allocated under the LPA; capital account movements (commitment, contributions, equalisation at subsequent closings, carry allocated or clawed back); and cash actually distributed, split between return of capital, income and gains. In private equity and venture capital these do not coincide: a partner can be allocated taxable income without receiving cash in the same year, and jurisdictions can recognise the same event at different times.
• Jurisdiction-specific data. German resident partners typically need data for the separate and uniform determination of income under § 180 of the German Fiscal Code; US investors may need partnership-format information depending on the US classification of the SCSp, which is decided at set-up. Where an investor's jurisdiction treats the SCSp as opaque, the pack should say so and report the events that are taxable on that basis.
• Classification record. How each investor jurisdiction classifies the SCSp, which is also the evidence base for the reverse hybrid analysis in section 4.

Two practical rules keep the pack defensible. Tax allocations are derived from the allocation provisions of the LPA, including the waterfall and any equalisation, and reconciled to the capital account and to cash, so that each partner can see why its taxable income differs from what it received. And the data model is fixed at onboarding: residence, classification, FATCA and CRS status and, where relevant, the investor's own exemptions are collected once, through the subscription process described in our guide to who you can invite, and reused for every period.

FAQ