SPF subscription tax in Luxembourg: rate and caps

What is the SPF subscription tax in Luxembourg?

The SPF subscription tax in Luxembourg is an annual 0.25% tax that stands in place of tax on profits: exempt from corporate income tax, municipal business tax and net wealth tax under the law of 11 May 2007, a family wealth management company pays only this tax, declared and paid every quarter.

The regime rests on a simple exchange. The company gives up any commercial activity and limits its object to the acquisition, holding, management and realisation of financial assets; in return it falls outside the direct taxes and faces only a tax based on its own funds and its debt, not on its result. An SPF collecting substantial dividends and an SPF collecting nothing pay the same tax where their capital and their debt are identical.

That is what sets the vehicle apart from an ordinary holding company. A SOPARFI remains fully taxable, deducts its expenses, applies the participation exemption and has access to tax treaties; the family wealth management company is outside that scope, so without treaty access, without the parent-subsidiary directive and without any ability to use losses. The choice between the two therefore turns not on the rate but on the nature of the holding: as soon as a participation is actively managed, the SPF is no longer the vehicle.

The subscription tax is not specific to the SPF: the Administration de l'enregistrement, des domaines et de la TVA also levies it on investment funds, at other rates and on other bases. The subscription tax office is an SPF's only tax counterparty, where a taxable company deals with the Administration des contributions directes.

How is the subscription tax base calculated?

The subscription tax base of a Luxembourg SPF adds three items set by article 5 of the law of 11 May 2007: the paid-up share capital, the share premium, and the part of the debt that, on the first day of the financial year, exceeds eight times the sum of the first two.

The eight-times rule is the point files underestimate most. As long as debt stays below eight times the funds contributed, it adds nothing to the base; beyond that, the excess enters it in full. An SPF capitalised at EUR 1,000,000 — say EUR 200,000 of paid-up capital and EUR 800,000 of share premium — therefore has a debt allowance of EUR 8,000,000.

With debt of EUR 9,500,000 on the first day of the financial year, the excess of EUR 1,500,000 brings the base to EUR 2,500,000, giving an annual tax of EUR 6,250, paid in quarters of EUR 1,562.50.

Two practical consequences follow. First, a shareholder current account contribution is not neutral: it inflates the debt and may cross the eight-times limit, whereas a contribution to share premium enters the base for its amount alone. Second, the assessment date is the first day of the financial year, not the closing date: a repayment made during the year does not correct the base of that same year.

Reserves, retained earnings and the result for the year do not appear in the list in article 5, which is exhaustive: an SPF that accumulates profits without capitalising them does not see its tax rise on that account. That is also why the base is read from the balance sheet and not from the profit and loss account, and why keeping proper annual accounts remains indispensable even though the company has no income tax return to file.

When must the subscription tax be declared and paid?

The subscription tax is declared and paid quarterly in Luxembourg, within the first twenty days of the following quarter: by 20 April for the first quarter, 20 July for the second, 20 October for the third and 20 January of the following year for the fourth.

Filing has been electronic and mandatory since 1 July 2021. Quarterly returns go through the procedures on guichet.public.lu, with a LuxTrust identification product or an electronic identity card, and the subscription tax office no longer accepts paper returns. The annual rate applies to the base, then the result is divided by four, a division the application performs itself.

The year of incorporation and the year of liquidation follow a pro rata. The SPF then pays the tax in proportion to the number of days during which it existed in the quarter concerned, and it is the dates published in the Trade and Companies Register that govern, not the date the deed was signed. The duty to file therefore runs from the date of incorporation to the date of dissolution entered in the register.

We regularly see two omissions in this calendar. The first is the 20 January deadline, which falls when the file is turned towards closing the previous financial year and slips into the background. The second is updating the amount: SPFs incorporated before 2025 still carried the former minimum in their forecasts, and the correction came a quarter late. On a passive holding company, full filing follow-up is invoiced from EUR 250 excl. VAT per month under the firm's fee schedule, and the subscription tax itself needs only a quarterly entry where the base is stable.

What are the minimum and the cap of the subscription tax?

The minimum and the cap of the subscription tax bracket the charge of any Luxembourg SPF: the annual tax can be neither below EUR 1,000 nor above EUR 125,000. The annual minimum stood at EUR 100 until 2024, and the cap has been unchanged since 2007.

The increase in the minimum comes from the law of 20 December 2024 modernising the SPF law, published in the Journal officiel on 24 December 2024. Circular 823 of the director of the Administration de l'enregistrement, des domaines et de la TVA, dated 27 December 2024, sets entry into force on the first day of the quarter following publication, that is 1 January 2025.

The practical effect is asymmetric. A tenfold minimum hits precisely the lightest SPFs, those whose paid-up capital and premium do not exceed EUR 400,000: below that base, the 0.25% rate produces less than the minimum, so the tax is in effect a flat amount. The cap, conversely, is reached only beyond a base of EUR 50,000,000, where the tax stops growing with the funds contributed.

A dormant SPF therefore does not escape the tax. It owes the annual minimum for as long as it is on the register, which changes the arithmetic of a structure left idle: keeping an unused vehicle now costs ten times what it did before 2025. This is one of the few parameters that justifies reopening the file on an older private wealth structure, next to the question of succession where the holding has aged.

What conditions must an SPF meet to keep the regime?

The SPF regime in Luxembourg rests on cumulative conditions that paying the subscription tax never dispenses with: eligible investors, an object limited to financial assets, a ban on holding real estate, and an annual certificate sent to the administration.

Eligible investors are defined in article 3(1) of the law: individuals acting in the course of managing their private wealth, wealth-holding entities acting exclusively in the interest of the private wealth of individuals, and intermediaries acting on behalf of those investors. Each investor must declare that status in writing. An operating company or an institutional investor therefore cannot come into the capital.

The object is limited to financial assets within the meaning of the law of 5 August 2005 on financial collateral arrangements, together with cash and assets held in an account. An SPF may hold participations, but without interfering in the management of the companies concerned. Direct ownership of a property is excluded from the outset, since a building is not a financial asset; indirect ownership through a partnership covered by paragraph 11bis of the 1934 tax adaptation law, or through one or more investment funds, has been prohibited since 1 July 2021.

Article 4(2) adds a condition on dividends received. The SPF loses the benefit of the exemption for the year concerned where it receives at least 5% of its total dividends from participations in non-resident, unlisted companies that are not subject to a tax comparable to corporate income tax. The company must keep available the documents allowing that comparability to be assessed, which means documenting the tax position of each distributing company.

The annual certificate, finally, must be filed electronically by 31 July at the latest and covers the previous calendar year, irrespective of the dates of the financial year. It is signed by the company's domiciliation agent or, failing that, by a professional holding a regulated accountancy title, an expert-comptable or a réviseur d'entreprises agréé; a certificate signed by a director, a manager or a beneficial owner is refused by the administration.

What are the penalties, and how is the regime lost?

A breach of the SPF law in Luxembourg draws an administrative fine before any withdrawal of the regime: up to half the annual subscription tax due for filing breaches, or up to EUR 10,000 where that tax cannot be determined, and up to EUR 250,000 for breaches of particular gravity.

This graduation is recent, and it protects the taxpayer as much as it exposes them. Before the law of 20 December 2024, the director of the administration could withdraw the benefit of the regime for any breach, with no further detail. The modernised text makes withdrawal conditional on a breach of some gravity that persists, during a period in which the company has not complied with an injunction to bring itself into conformity. The fine decision, together with a remediation period of no more than six months from notification, has become the procedural prerequisite for any withdrawal.

Withdrawal, once pronounced, is permanent and retroactive. The company is invited to submit its observations, then withdrawal takes effect on the later of the first breach found by the administration and 1 January of the fourth year preceding the year of the decision. A withdrawal decision becomes enforceable only once it is final, that is on expiry of the three-month foreclosure period or after a final judgment. The company then becomes taxable under ordinary rules for the whole period concerned.

After a final withdrawal, the company may no longer present itself to third parties under the SPF status or name, and the director may impose an administrative fine of up to EUR 5,000 for each month of non-compliance with that prohibition. The new procedural regime applies only to breaches occurring after the law entered into force on 25 December 2024; earlier breaches remain governed by the previous version of the text.

Sources and verification

Written for Financial Services Luxembourg and reviewed before publication by Mickaël LOC, licensed accountant (authorisation 10077274). Rate, base, minimum, cap, quarterly deadlines, regime conditions, annual certification, fines and the withdrawal procedure verified on 17 October 2026 against the official sources below.

The sources consulted are as follows.

From the Portail de la fiscalité indirecte, the professional page on the family wealth management company gives the annual rate of 0.25%, the base made up of paid-up share capital, share premium and the part of the debt outstanding on the first day of the financial year that exceeds eight times paid-up capital and premium, the annual minimum of EUR 1,000, the cap of EUR 125,000, the pro rata by days of the quarter in the year of incorporation and of liquidation, the governing character of the dates published in the Trade and Companies Register, and the fine of up to half the annual tax due for a late return or late payment.

Circular 823 of 27 December 2024, issued by the same administration, carries the modernisation of the law of 11 May 2007: the increase of the annual minimum to EUR 1,000 with effect from the first day of the quarter following publication on 24 December 2024, a fine of up to EUR 250,000 for breaches of particular gravity, an injunction to remediate of no more than six months, withdrawal of the status made conditional on a serious and persisting breach, the permanent and retroactive character of withdrawal on the later of the first breach found and 1 January of the fourth year preceding the decision, enforcement deferred until the decision is final, the prohibition on using the name after withdrawal with a fine of up to EUR 5,000 per month, and application of the new regime only to breaches occurring after 25 December 2024.

The same administration's note on the annual certification gives the 31 July deadline, its attachment to the previous calendar year irrespective of the financial year, signature by the domiciliation agent or, failing that, by a professional with a regulated title, and the refusal of certificates signed by a director or a beneficial owner.

The same portal's news item on the changes of 1 July 2021 gives the ban on indirect real estate holding through the entities covered by paragraph 11bis of the tax adaptation law and through investment funds, together with mandatory electronic filing, both introduced by the budget law of 19 December 2020 and commented on by circular 804bis of 17 February 2021. From the Guichet.lu portal, the page on the subscription tax confirms the rate, the minimum, the cap, the division of the annual tax by four and the four deadlines of 20 April, 20 July, 20 October and 20 January.

From the Administration des contributions directes, the SPF entry in its A to Z index gives the exclusion from the parent-subsidiary directive, the absence of withholding tax on dividends distributed by the SPF without prejudice to their taxation in the hands of resident recipients, and the prohibition on the SPF interfering in the management of the companies in which it holds participations.

From Legilux, finally, the text of the law of 11 May 2007 published in the Journal officiel gives the legal forms admitted, the definition of financial assets by reference to the law of 5 August 2005 on financial collateral arrangements, the eligible investors of article 3, the exemption from income tax, municipal business tax and net wealth tax in article 4(1), the forfeiture in article 4(2) where the company receives at least 5% of its total dividends from non-resident unlisted participations not subject to a comparable tax, and the annual certification duty.

Three points could not be verified against an official source at this date. First, the figures in article 5 after the law of 20 December 2024: legilux.public.lu is unreachable from this environment and the version of the text read through indexed extracts still carries the EUR 100 minimum, so the EUR 1,000 amount rests on circular 823 and on the administrative pages in force, which agree with each other.

Second, the treatment of the annual minimum under a pro rata: the sources give the pro rata by days of the quarter in the year of incorporation and of liquidation, but none states whether the minimum itself is prorated or remains due for its annual amount. Third, the treatment of a financial year that does not match the calendar year for the date on which debt is assessed, a point circular 823 addresses without the detail having been read.

All three can be checked against the consolidated version of the law of 11 May 2007 published on legilux.public.lu, against the full text of circular 823 on pfi.public.lu, and with the subscription tax office of the Administration de l'enregistrement, des domaines et de la TVA.

This article states the law as it stands at the date of publication and is not personalised legal or tax advice: eligibility for the regime, the calculation of the base, the effect of intra-group debt and exposure to a penalty depend on the articles of association, on the composition of the shareholding and on the exact nature of the assets held. Rates, amounts, texts and deadlines change, and any decision committing your structure should be verified as at the date you rely on it. Report an error to contact@financialservices.lu: the correction is dated in the article.