A Dutch holding company that owns a United States limited liability company owns an entity whose tax identity is not fixed. The LLC is a creature of state law, and its separateness is a question of federal tax law. Its federal classification is chosen, and the Netherlands is under no obligation to agree with the choice. Most of the difficulty in this structure begins there, and none of it is visible from the deed of incorporation or the operating agreement.
The problem is not that two states tax the same profit twice. That is the ordinary case, and treaties exist for it. The problem is the opposite one. An entity that one state sees as a company and the other sees as nothing at all can produce a payment that is deducted in one place and included nowhere. Since the ATAD 2 measures of Directive (EU) 2017/952 were brought into the Wet op de vennootschapsbelasting 1969, the Dutch answer to that outcome is direct: it removes the deduction rather than negotiating with the other state.
Where the classification comes from on each side
On the American side an LLC is an eligible entity. Under the classification regulations at 26 CFR 301.7701-3, a domestic eligible entity with a single owner is disregarded as separate from that owner by default, and one with two or more members is a partnership. The entity may elect out of the default and be treated as an association taxable as a corporation. Nothing in the LLC agreement determines this. The election does.
The Dutch side reads the same entity through its own lens. Since 1 January 2025 the classification of foreign legal forms has been codified by the Wet fiscaal kwalificatiebeleid rechtsvormen, which amended the Wet op de vennootschapsbelasting 1969 and neighbouring statutes. The comparison sits in article 1a, and the Besluit vergelijking buitenlandse rechtsvormen measures the foreign form’s nature and organisation against the Dutch forms. It does not ask what box the owner ticked in Washington.
They agree where the members have elected corporate treatment in the United States; otherwise, since 2025, they diverge by default. Its annexed list puts the limited liability company of every American state alongside the naamloze vennootschap and the besloten vennootschap, and a listed form is presumed to follow it unless the foreign law has changed materially since the stated qualification year, 2023. An LLC disregarded or treated as a partnership there is therefore opaque in the Netherlands, and that is a hybrid entity. The gap is structural, not a drafting error, and it will not close by itself.
Deduction without inclusion, and the reverse case
The commercial consequence of a mismatch is easiest to see in a payment. Suppose the Dutch parent lends to the American LLC. If the United States disregards the LLC, the loan is a transaction between the parent and a branch of itself, and the interest is not deductible against a federal base taxed at 21 per cent under section 11(b) of the Internal Revenue Code. Reverse it and the outcome is worse: the parent borrows from the LLC and deducts the interest to a payee the Netherlands regards as opaque, while the United States attributes that interest to the parent itself and includes nothing.
That is a deduction without inclusion, and it is the classic hybrid outcome. The mirror case is double deduction, where the same expense reduces two bases, as it does when an American owner checks the box on a Dutch subsidiary and deducts its costs alongside the subsidiary’s own Dutch return. Both patterns arise from the same fact and neither requires anyone to have done anything artificial.
A third pattern is easy to miss. Article 12ad catches the imported mismatch, where a payment finances, directly or indirectly, a deduction the Dutch rules would have denied. Groups discover these late, because the defective element sits in a company nobody was looking at.
What the Dutch hybrid mismatch measures do
Afdeling 2.2a of the Wet op de vennootschapsbelasting 1969, articles 12aa to 12ag in the text in force in 2026, contains the Dutch response. Article 12aa lists the mismatch outcomes and denies the deduction where one of them arises between associated parties, between the parts of one enterprise, or under a structured arrangement. The remedy is mechanical. It does not depend on motive, and it does not require the inspector to prove that the structure was built for tax reasons.
The rules operate in a primary and a secondary position. Where the Netherlands is the payer state, the deduction is refused. Where it is the payee state and the payer state applies no provision comparable to article 12aa, the Dutch base is increased instead. This ordering matters when structuring, because it decides which side bears the cost and, in practice, which side has to be documented first.
There is a documentation duty attached, and it is not decorative. Article 12ag requires records showing how far and in what way the section applies, and the burden shifts where the file is thin. A group that cannot show how its American entity is classified on both sides, with the elections and the comparison behind them, is arguing from a weak position before the substantive analysis has begun.
The consequence of a denial is arithmetic. Article 22, in the text in force for 2026, taxes the first 200,000 euro of the taxable amount at 19 per cent and charges 38,000 euro plus 25.8 per cent above it. A deduction refused in the upper band is worth 25.8 cents in the euro, recurring every year the arrangement remains in place.
The reverse hybrid, and the entity taxed by nobody
The mirror image of the hybrid entity is the reverse hybrid: a partnership formed in one state, transparent there, whose participants sit in a state that treats it as opaque. Nobody includes the income. The Netherlands closed this from 1 January 2022 by making a Dutch reverse hybrid entity a taxpayer in its own right under article 2, which spares only diversified securities vehicles that qualify as a collective investment undertaking or an alternative investment fund.
For a group with an American limb this is not an abstraction. Dutch limited partnerships and comparable foreign forms placed between an American holding structure and a European operating group are precisely the vehicles the rule was drawn for. A structure assembled before 2022 and never revisited may contain an entity that has quietly become a Dutch taxpayer.
The rule also changes the reporting picture, not only the charge. An entity that was outside the corporate income tax net has returns to file, accounts to keep on a tax basis and, if it distributes, a withholding analysis to run. In one mandate the tax cost of the change was modest and the cost of retrofitting three years of records was not.
The treaty answer, and what it leaves open
The Convention between the Netherlands and the United States addresses transparency directly. Article 24, in the paragraph added by the Protocol signed on 8 March 2004, provides that an item of income, profit or gain derived through a person that is fiscally transparent under the laws of either state is considered to be derived by a resident of a state to the extent that the item is treated, for the purposes of the taxation law of that state, as the income, profit or gain of a resident.
This is a rule about who may claim treaty benefits. It resolves entitlement where income passes through a transparent vehicle, and it prevents a state from refusing a reduced rate merely because the recipient is not the legal owner under its own classification. It is genuinely useful, and it is often the provision that makes an American holding of a Dutch subsidiary work at the withholding level.
It is not, however, a cure for the mismatch. Article 24 allocates benefits; it does not restore an inclusion that never happened, and it does not stop the Dutch hybrid mismatch measures from denying a deduction. Treating the treaty as the answer to a deduction without inclusion is a common error and an expensive one, because it produces confidence at the moment when the file most needs work.
The withholding limb that catches the hybrid
The Wet bronbelasting 2021 adds a second, less familiar exposure. In the text in force from 1 January 2026, article 4.1 sets the conditional withholding tax at the highest percentage in article 22 of the Wet op de vennootschapsbelasting 1969, which for 2026 is 25.8 per cent. It applies to interest, royalties and dividends flowing to associated entities in defined situations.
The trigger most people know is the low-taxed jurisdiction. Article 1.2 confines it to states designated by ministerial regulation that either tax profits below 9 per cent or appear on the European Union list of non-cooperative jurisdictions. What is less well known is that article 2.1 also catches hybrid situations on their own terms, where the state of the recipient does not treat the recipient as entitled to the income because it regards an entity in which the recipient participates as the person entitled, or where the recipient is not regarded as resident anywhere.
The practical point for a Dutch holding above an American structure is that the charge does not require a tax haven anywhere in the chain. It requires a classification gap. A payment routed through an entity that the United States disregards, to a recipient the United States does not treat as the beneficiary, can meet the description while every company involved sits in a high-tax country.
What this means when the structure is being built
Classification is the first question in an American limb, not the last. The election on the entity, its default position if no election is made, and the Dutch comparison of the foreign form should be settled and written down before the intercompany agreements are drafted, because the agreements are where the deductions arise and where the mismatch becomes visible.
Symmetry is worth paying for. A structure in which both states reach the same answer about every entity is duller, easier to file and far cheaper to defend than one that relies on a favourable reading of a mismatch rule. Where symmetry is impossible for commercial reasons, the sensible course is to place the asymmetry where no deductible payment crosses it.
Reviews should be periodic rather than event-driven. The reverse hybrid rule arrived in 2022, the classification statute in 2025, and the hybrid mismatch measures have applied since 1 January 2020. A structure that was symmetrical when it was built can be asymmetrical now without a single document having changed.
The underlying discipline is unglamorous. Know how each entity is classified on both sides, know why, keep the file that proves it, and price the deductions on the assumption that they will be examined. The groups that get into trouble with hybrid mismatches are rarely the ones that engineered them. They are the ones that inherited a structure and never asked what the other country thought it was looking at.
This article is informational and does not constitute tax or legal advice. The treatment of any structure depends on its facts and on the law of each jurisdiction involved. Each engagement is subject to scope and applicable regulation.