A token issuer expanding its treasury mandate into third-party capital discovers, often too late, that the fund vehicle chosen at formation is incompatible with the target investor base, the custody arrangement the exchange demands, and the tax treatment the principal jurisdiction assigns to digital-asset gains. The structuring decision made at the start of that process – domicile, vehicle type, manager authorisation – defines the cost of every subsequent compliance obligation and, in some cases, whether institutional capital can participate at all. This analysis examines how the alternative investment fund (AIF) model applies to digital-asset strategies, where it works, where it breaks, and what the cross-border interaction between fund domicile, manager location and asset class actually looks like in practice.
The central point: not every offshore vehicle qualifies as a distributable AIF in the markets where capital lives. Choosing a vehicle that cannot be marketed to European or UK institutional investors, or that produces adverse tax treatment for US-adjacent LPs, is not a structuring win – it is a locked-in limitation. Getting this right requires mapping domicile to investor base, asset mix and redemption profile from the outset.
What is an AIF in the context of digital-asset funds?
An alternative investment fund in the regulatory sense is any collective investment undertaking that raises capital from a number of investors, invests it in accordance with a defined policy, and is not authorised as a UCITS. That definition – drawn from the AIFMD regime that governs European fund management – is deliberately broad. A vehicle holding Bitcoin, Ether, tokenised real-world assets or a basket of DeFi positions will fall squarely within it if it pools investor capital toward a shared return objective.
The practical consequence is that the manager of a digital-asset AIF – not just the fund itself – triggers the authorisation question. Under the AIFMD regime, the alternative investment fund manager (AIFM) must be authorised in an EU/EEA member state or operate within one of the regime's permitted exemptions. Below-threshold managers benefit from a lighter registration path, but that path carries its own marketing constraints. The asset class does not create a carve-out. A fund holding crypto is an AIF if it otherwise meets the definition; the fact that the underlying assets are digital has no exempting effect.
With fund supervision tightening across the major hubs and MiCA now adding a CASP layer for any manager-adjacent entity providing crypto-asset services, the regulatory surface area for a digital-asset AIF has grown considerably. Operators who assume that a standard Cayman limited partnership with a crypto mandate sidesteps European regulation need to audit which investors they intend to approach – because AIFMD's reach turns on marketing activity, not on where the fund is incorporated.
CTA #1The process above describes the standard analytical path. Your facts – the entity type, the investor base, the banking chain – change the analysis materially. For a scoped assessment of your fund structure, contact OBOLUS at info@oboluslaw.com.
Which domiciles actually work for a digital-asset AIF?
The right fund domicile is determined by three axes: where the target investors are located, what the expected asset mix looks like, and whether the manager wants or needs passporting rights into European markets. No single jurisdiction leads on all three simultaneously.
The Cayman Islands remains the dominant vehicle for USD-denominated strategies targeting US and Asia-Pacific institutional capital. CIMA's Virtual Asset (Service Providers) Act provides a registration and licensing track for VASPs, and Cayman limited partnerships and segregated portfolio companies are well understood by prime brokers and institutional custodians. The structural limitation is distribution: a Cayman AIF cannot be marketed into the EU on a AIFMD passport. Distribution into EU professional investors requires either national private placement regime (NPPR) filings in each target member state – which vary in complexity and cost – or a parallel EU-domiciled feeder structure.
The British Virgin Islands offers the VASP Act 2022 registration framework under the BVI Financial Services Commission. The BVI's strength is speed and structuring flexibility; its constraint is the same distribution ceiling as Cayman for European-facing strategies. It remains a practical choice for founder-led funds raising primarily from US-adjacent or Asia-Pacific family office capital without an EU mandate.
Luxembourg sits at the other end of the spectrum. A Luxembourg-domiciled AIF managed by an authorised AIFM carries the full AIFMD passport and can be distributed to professional investors across the EU without per-country filings. The cost of entry – CSSF oversight, the substance requirements for the AIFM, and the ongoing compliance overhead – is correspondingly higher. For a sub-threshold digital-asset manager raising under the AIFMD small manager threshold, a Luxembourg Reserved AIF (RAIF) structured under a third-party authorised AIFM can reduce the direct cost while preserving passporting.
Guernsey occupies a distinct middle position. As a non-EU jurisdiction, Guernsey-domiciled funds cannot use the AIFMD passport. However, the Guernsey Financial Services Commission has developed a well-regarded private investment fund framework, and Guernsey structures are frequently used for UK and Crown Dependencies-adjacent mandates where AIFMD passporting is not the primary objective. For managers targeting UK professional investors post-Brexit, the UK's own Overseas Funds Regime and the FCA's approach to non-UK AIFs remain relevant considerations.
The ADGM in Abu Dhabi, under FSRA supervision, offers a common-law fund environment with digital-asset-specific regulated activity categories. For Gulf-domiciled capital or strategies with a Middle East-first investor profile, an ADGM fund structure can align fund domicile with the location of anchor investors and the primary banking relationship more cleanly than a Cayman vehicle that then requires remittance infrastructure into the region.
How does MiCA's CASP layer interact with AIF management?
Under MiCA, an entity providing crypto-asset services – including custody, exchange, or portfolio management of crypto-assets – must hold a CASP authorisation from an EU/EEA national competent authority, even if that entity is also regulated as an AIFM. The two regimes stack rather than substitute for one another.
This creates a real structuring pressure for managers who integrate digital-asset custody or execution within the fund management entity itself. A manager that directly holds client crypto-assets, operates an internal execution desk for on-chain trades, or provides staking-as-a-service to the fund faces the CASP authorisation question alongside – not instead of – the AIFM authorisation question. ESMA and the relevant national competent authorities have been explicit that MiCA's CASP requirements apply to regulated financial entities where the activity in question falls within MiCA's scope.
The practical solution most operators in our practice have converged on is a functional separation: the AIFM manages the fund under AIFMD authorisation; a separately authorised CASP (either third-party or a subsidiary) provides custody and execution services to the fund under a service agreement. This separation is cleaner from a regulatory perspective, more legible to institutional investors conducting operational due diligence, and reduces the authorisation surface of each entity. It does, however, add inter-entity contracting complexity and requires careful drafting of the service arrangements to avoid characterisation of the CASP entity as a de facto sub-fund manager.
For managers below the AIFMD threshold, the MiCA question does not disappear. A sub-threshold manager is still subject to VASP/CASP registration obligations in EU member states where it provides regulated crypto-asset services. The threshold exemption from AIFMD full authorisation does not carry across into MiCA. This asymmetry catches managers who assume that a single regulatory gateway covers all their activity.
What does the AIF manager authorisation process look like for a digital-asset fund?
The AIFM authorisation process follows a standard regulatory authorisation model – fit and proper assessment, programme of operations, risk management and governance documentation – with additional layers that reflect the digital-asset-specific regulatory expectations of the applicant's home NCA.
NCAs across EU member states have become materially more attentive to how digital-asset managers describe their valuation methodology, their custody arrangements, and their liquidity management approach in fund documents. A standard long-only equity AIF submission will not satisfy a regulator reviewing a multi-strategy crypto fund application. The programme of operations must address on-chain execution, key management, wallet infrastructure, and the segregation model for digital assets in a way that maps to the regulator's own understanding of crypto-specific operational risk.
Timelines vary by member state and by the depth of documentation at first submission. In our cross-border practice, we have seen clean, well-prepared applications for sub-threshold registration processed in a matter of weeks; full AIFM authorisation for a digital-asset strategy has, in some instances, required several months of dialogue with the NCA. The most common cause of extended timelines is an incomplete or inconsistent treatment of custody – particularly where the manager proposes to use an unregulated or offshore custodian without an adequate operational risk mitigation rationale.
The documentation package for a digital-asset AIFM typically includes: the programme of operations addressing crypto-specific risk categories; the fund prospectus or private placement memorandum with a digital-asset-specific risk section; the custody agreement identifying the regulated custodian and the key management model; the valuation policy covering on-chain asset pricing and liquidity gates; and the AML/KYC framework calibrated to blockchain-specific due diligence including the Travel Rule obligations. The Travel Rule (the obligation to pass originator and beneficiary data with a virtual asset transfer) applies to the fund's on-chain movements where they meet the applicable threshold.
CTA #2If a prior application stalled or an investor mandate was declined because the structure could not satisfy operational due diligence, a second read of the architecture can surface the structural reason and the route forward. Write to OBOLUS at info@oboluslaw.com.
How does custody work for a digital-asset AIF, and why does it determine investor access?
Custody arrangements for a digital-asset AIF are not an operational afterthought – they are one of the primary gating factors for institutional investor participation and for regulatory acceptance of the fund structure.
Institutional LPs – pension funds, insurance companies, endowments – typically require that fund assets be held by a regulated custodian in a segregated account, with a clear legal basis for their proprietary interest in those assets. For traditional fund assets, this is standard. For digital assets, the combination of on-chain finality, private key management and the limited number of regulated, institutional-grade custodians creates a constraint that the fund structure must address at the formation stage.
Under AIFMD, the depositary function for an authorised AIF requires an entity authorised to act as depositary in the relevant jurisdiction. A small number of regulated custodians have developed depositary infrastructure for digital assets in EU member states; the list has grown but remains limited relative to the traditional fund market. For Cayman and BVI structures, there is no mandatory depositary requirement equivalent to AIFMD, but institutional investors will conduct their own operational due diligence and effectively impose a custody standard through side letter negotiation.
The custody model most compatible with institutional requirements is a regulated third-party custodian holding segregated digital assets under a prime brokerage or custody agreement, with the fund manager holding no direct key custody. Multi-party computation (MPC) wallet infrastructure, where the custodian and one or more authorised parties hold key shares without any single party controlling the complete key, has become the standard for institutional-grade crypto custody. Managers proposing self-custody arrangements – whether through hardware wallets or direct key management by fund personnel – will typically face investor objections and, in an AIFMD context, face difficulties satisfying the depositary delegation rules.
A practical note from our practice: the choice of custodian also determines banking access. Regulated custodians that maintain banking relationships with prime brokerage desks in Singapore, Luxembourg, the Channel Islands or the UAE facilitate fiat on/off ramp services that a non-banked custodian arrangement cannot. For a fund holding a mix of stablecoins and exchange-listed tokens, the custodian's own banking infrastructure is a direct determinant of the fund's liquidity management capacity.
What are the key tax and cross-border structuring considerations for a digital-asset AIF?
The tax treatment of a digital-asset AIF depends on the interaction of three layers: the fund vehicle's own tax status in its domicile, the tax position of the manager entity, and the treatment of distributions and capital gains in the jurisdictions where investors are tax resident.
The Cayman and BVI vehicles benefit from their domicile's absence of corporate income tax, capital gains tax and withholding tax on fund-level returns. This is not a secret; it is the reason they dominate the offshore fund market. The risk for digital-asset funds is at the layer above: where the fund manager – or the general partner of a limited partnership – is tax resident in a jurisdiction that taxes gains on a mark-to-market or realization basis, the manager's own tax exposure on carried interest and management fee income is a material cost line that varies significantly by jurisdiction.
The AIFC in Kazakhstan has emerged as an interesting manager-jurisdiction for certain strategies, with a common-law environment, a developing digital-asset regulatory framework under AFSA, and a tax profile for AIFC-domiciled entities that can be advantageous for managers who are not constrained to a European or US time-zone presence. We have seen this structure used where the principal investment universe is CIS-adjacent or Central Asian digital assets and where the investor base is not primarily European institutional capital.
The cross-border tension most commonly encountered in our practice arises where a Cayman fund holds exchange-traded tokens through an account on an exchange licensed in a third jurisdiction, and the fund's LP base spans the US, Europe and the Gulf. Each of those LP groups has a different tax reporting requirement, a different position on PFIC/CFC characterisation (for US-connected investors), a different FATCA/CRS reporting chain, and a different expectation about withholding on digital-asset distributions. Structuring a single vehicle that is simultaneously PFIC-clean, FATCA-reportable and not treated as a conduit for EU tax purposes requires active advice at formation – it cannot be retrofitted after the first close.
Decision matrix: which structure fits which manager and investor profile?
The right structure is a function of four variables working together: investor geography, fund size, asset strategy, and the manager's own regulatory footprint. The following profiles illustrate the principal decision branches.
Profile A – A manager raising from European institutional LPs with a multi-token liquid strategy. This profile requires an AIFMD-compliant structure with passporting rights. The most direct path is a Luxembourg RAIF under an authorised AIFM (third-party AIFM where the manager is sub-threshold), with a MiCA-authorised CASP for custody and execution services held by a separate entity. Timeline to first close from a standing start is likely measured in months, not weeks, given the regulatory dialogue involved. The key risk is NCA appetite for the specific asset strategy – a highly concentrated DeFi strategy will require more regulator engagement than a diversified large-cap crypto mandate.
Profile B – A founder-led fund raising from US and Asia-Pacific family offices and high-net-worth investors with a Bitcoin and Ether-focused strategy. A Cayman limited partnership or Cayman SPC registered under CIMA's VASP Act provides the structural flexibility and institutional familiarity for this profile. An AIFMD passport is not required; NPPR filings are unlikely to be needed if EU-based investors are excluded. The primary regulatory interaction is with CIMA for the fund vehicle and with the relevant jurisdiction's VASP/CASP regime for the manager entity. Custody through an institutional-grade Cayman or Singapore custodian resolves the LP due diligence question for most family office investors.
Profile C – A manager based in the UAE (Dubai or Abu Dhabi) raising regional Gulf capital with a tokenised real-world asset strategy. A VARA-regulated or ADGM/FSRA-supervised structure aligns the manager's regulatory footprint with the domicile of anchor investors and the likely banking infrastructure. VARA's activity-based licence framework and the FSRA's recognised virtual asset categories provide the regulatory architecture. For tokenised RWA strategies, the additional question of whether the token itself constitutes an investment product under the applicable regime must be resolved at the outset – the label "utility token" does not determine the regulatory characterisation.
A micro-matter from our recent practice is instructive. A digital-asset manager with an existing Cayman fund and a growing European LP base engaged us after an EU institutional investor's operational due diligence team flagged the structure as non-compliant with their internal mandate requirements – specifically, the absence of an AIFMD-authorised depositary. We mapped the structure against the AIFMD depositary delegation rules, identified a Luxembourg-authorised depositary willing to provide services for digital assets under a sub-delegation model, and advised on the inter-entity service agreement required to satisfy the NCA's depositary independence requirements. The fund completed its European close within a timeframe acceptable to the LP. No structural change to the Cayman master vehicle was required.
What are the most common structural mistakes in digital-asset AIFs?
The most consequential mistake is selecting a domicile for its familiarity or speed without mapping it to the investor base the manager actually intends to target twelve to twenty-four months after formation. A BVI vehicle formed quickly for a first close of founder capital that then pursues European institutional investors requires either a parallel EU structure or an NPPR filing process in each target member state – both expensive and time-consuming compared with getting the architecture right at the start.
The second recurring error is treating the fund vehicle and the manager entity as a single regulatory question. They are not. The fund's domicile determines its marketing rights and tax status. The manager's domicile determines its authorisation obligations, its own tax exposure on carried interest, and – critically under MiCA – whether it triggers CASP registration requirements in addition to AIFM registration. We regularly advise managers who formed a fund structure without considering the manager-entity layer at all, then discovered an authorisation gap when a regulated counterparty required evidence of AIFM or CASP status as a condition of engagement.
The third error is custody deferral. Managers who plan to "sort out custody later" consistently face the same problem: the custodian selected post-formation does not align with the fund's key management model, creating an operational transition that disrupts ongoing fund administration. Institutional custodians increasingly require that their key management architecture and API infrastructure be integrated into fund operations from day one. Retrofitting that infrastructure after launch is materially more complex than building it in.
A common assumption among managers new to the AIF structure is that any offshore vehicle works equally well for a digital-asset fund – that the principal decision is between Cayman and BVI, and that both lead to the same place. In our experience, that assumption is incorrect. The relevant question is not which offshore vehicle looks simplest at formation, but which vehicle, in which domicile, under which manager authorisation, can reach the investors and the counterparties the fund needs to be commercially viable.
Related at OBOLUS
- Funds and investment vehicles for digital-asset businesses – OBOLUS practice overview covering vehicle selection, manager licensing and structuring across jurisdictions
- Fund manager licensing in Guernsey – detailed guide to the GFSC authorisation process for digital-asset fund managers
- AIF for digital assets under heightened scrutiny – analysis of NCA examination standards and how to prepare a compliant submission
FAQ
Where should a crypto fund be domiciled?
The right domicile depends on investor geography, asset strategy and distribution requirements. Cayman and BVI suit USD-denominated strategies targeting non-EU institutional and family office capital. Luxembourg or an EU member state is necessary where AIFMD passporting to European professional investors is required. ADGM provides a strong option for Gulf-focused strategies. No single domicile is universally optimal; the decision should be made after mapping the investor base and the manager's own regulatory and tax position.
Does a digital-asset fund manager need a licence?
Almost always, yes. Managing an AIF that pools investor capital requires AIFM authorisation or registration in the relevant jurisdiction, even where the assets are digital. Below the AIFMD threshold, lighter registration applies but carries marketing restrictions. In addition, where the manager provides crypto-asset services – custody, execution, portfolio management of crypto-assets – MiCA's CASP authorisation applies separately in the EU/EEA. Manager authorisation and fund vehicle registration are distinct obligations that must both be addressed.
How is custody arranged for a crypto fund?
Institutional-grade custody for a digital-asset fund typically involves a regulated third-party custodian holding segregated assets using MPC wallet infrastructure, with no direct key custody by fund personnel. Under AIFMD, an authorised depositary must be appointed for the fund; a small but growing number of regulated custodians provide depositary services for digital assets in EU member states. For Cayman and BVI structures, no mandatory depositary equivalent applies, but institutional investors will impose custody standards through operational due diligence and side-letter requirements.
OBOLUS is an independent digital-asset law boutique acting only for businesses. We advise exchanges, custodians, token issuers and funds on licensing across 70+ jurisdictions, on disputes and on-chain asset recovery across 25+ forums, and on the tax, banking and compliance that sit around them. Digital assets are the whole of our practice. We match domicile to investor base, asset mix and redemption profile – treating licensing, banking and tax as one mandate rather than three disconnected workstreams. To discuss your fund structure, contact info@oboluslaw.com or message us via t.me/oboluslaw.
To pressure-test your fund structure before you commit to a domicile, message us via t.me/oboluslaw or write to info@oboluslaw.com.
By Glen Sorensen, Disputes & Recovery Analyst – specialising in cross-border fund structuring disputes, custodian enforcement and digital-asset insolvency across common-law forums.
This publication is general information about the law and does not constitute legal advice. It is not a substitute for advice tailored to your circumstances. OBOLUS accepts no liability for action taken or not taken on the basis of this material. For advice on your situation, contact info@oboluslaw.com.