A fund manager expanding into Turkish markets – or structuring a vehicle to hold digital assets on behalf of investors with Turkish exposure – quickly discovers that custody is not a secondary question. It is the structural foundation that determines whether the fund can operate legally, bank effectively, and accept capital from the investors it actually wants. Turkey's capital-markets regime, administered by the Sermaye Piyasası Kurulu (the Capital Markets Board, commonly abbreviated SPK), sets clear conditions on how investment vehicles must safeguard client assets. Those conditions interact, sometimes uncomfortably, with the fast-moving digital-asset environment. Getting the custody layer wrong at inception means rebuilding it later – at cost, under time pressure, and sometimes in front of a regulator.
This page addresses the custody question directly: what the Turkish legal environment requires for fund-level asset safeguarding, how digital-asset holdings sit within that environment, what the cross-border structural options are for an inbound manager, and where the process typically stalls. We work through each point in sequence, and we identify the decision the fund's general counsel and CFO need to make before the first closing.
What does Turkey's regulatory environment require for fund custody?
Turkish fund law requires that assets held on behalf of investors be segregated from the fund manager's own property and held by an eligible custodian operating under the SPK regime. The principle is straightforward. The implementation for digital-asset funds is not. The SPK has progressively extended its perimeter over crypto-asset businesses, and the rules that govern who may hold and transfer digital assets in Turkey now impose licensing and operational obligations that run alongside – and sometimes conflict with – the capital-markets custody framework inherited from conventional fund regulation.
A fund holding Turkish-listed securities alongside a digital-asset allocation encounters a split custody problem. The securities leg sits comfortably with a Turkish-licensed custodian. The digital-asset leg requires a crypto-asset service provider – a CASP (an entity licensed to provide crypto-asset services under Turkish law) – that also has the operational infrastructure to hold assets at the fund's required standard of segregation. In our practice, finding a single Turkish-domiciled entity that satisfies both legs is the first structural constraint managers encounter.
The Turkish framework distinguishes between the safekeeping of assets (holding them securely, with clear title segregation) and the administration of those assets (exercising corporate actions, reporting to investors, managing redemption liquidity). A custody arrangement that handles the first function but not the second creates operational gaps that typically surface at redemption or at audit. Fund counsel must map both functions explicitly in the fund documents and the custodian agreement.
Who must be licensed to provide crypto-asset custody in Turkey?
Any entity that holds digital assets on behalf of third parties in Turkey – or that provides related services including transfer, exchange, or portfolio management – must be licensed as a CASP under the applicable Turkish crypto-asset legislation. This is not a registration-light regime. The SPK applies substantive requirements covering minimum capital, technical infrastructure, cybersecurity standards, and AML/CFT compliance. Unlicensed custody – even by a reputable foreign institution acting as sub-custodian without a Turkish-side presence – is a regulatory risk for the fund and for the manager.
The international dimension matters immediately. A fund managed from London or Dubai, investing partly into digital assets with Turkish-resident investors, is unlikely to be able to use an offshore-only custody structure without either triggering the Turkish licensing perimeter or accepting a meaningful investor-access restriction. The SPK's regulatory reach extends to activities directed at Turkish investors, and a custody arrangement that nominally sits outside Turkey may still fall within scope if the fund is marketed there.
Managers who approach this question late – after the fund structure is set and the first investor commitments are in hand – face a harder conversation with the regulator and with the custodian. We regularly advise fund counsel to resolve the Turkish custody question before investor documents are circulated, not after.
For a scoped assessment of your fund's custody structure and how it interacts with the Turkish regulatory perimeter, contact OBOLUS at info@oboluslaw.com. The process above describes the standard path. Your facts – the entity, the investor base, the asset mix – change the analysis.
How does fund domicile interact with the Turkish custody question?
The domicile of the fund vehicle and the location of the custodian are related but separate decisions, and treating them as a single question is one of the more costly structural mistakes we encounter. A Cayman or BVI fund vehicle holding digital assets for investors with Turkish exposure does not escape the Turkish custody analysis simply because the vehicle is offshore. The question turns on where the custody relationship is established, where the assets are effectively controlled, and – critically – where the investors are located.
A common assumption is that any offshore vehicle works equally well for a digital-asset fund. That assumption breaks down along several fault lines. First, the tax treatment of the fund at the investor level depends on the domicile of the vehicle and on the nature of the assets held. A fund domiciled in a jurisdiction with a double-taxation agreement covering Turkey will generally produce a different outcome for Turkish-resident investors than a vehicle in a jurisdiction without one. Second, the AML/CFT posture of the custodian – and its willingness to onboard a fund with Turkish-resident investors – reflects the correspondent banking environment, which has its own logic. Third, the redemption profile of the fund (daily, monthly, quarterly) interacts with the liquidity of the digital assets held and with the custodian's operational capability to effect in-kind or cash redemptions within the required window.
We match domicile to investor base, asset mix, and redemption profile. That matching exercise is the analytical core of the custody structuring process, and it cannot be done reliably with a standard offshore template.
What cross-border structure options exist for fund managers with Turkish exposure?
For a manager seeking to accept Turkish-resident investor capital while holding a meaningful digital-asset allocation, the structural options generally fall into three profiles, each with a different custody implication.
Profile A – offshore vehicle, foreign custodian, Turkish sub-distribution. The fund is domiciled in a well-developed fund jurisdiction (Cayman, BVI, or an EU-passporting jurisdiction). Digital assets are held by a licensed custodian in that jurisdiction – a firm operating under, for instance, the VARA regime in Dubai or the FCA regime in the United Kingdom. Turkish-resident investors access the fund through a licensed local distributor. Custody sits entirely outside Turkey. The risk is the marketing-perimeter question: if the distribution is sufficiently systematic, the SPK may take the view that Turkish CASP licensing is required for a custody function effectively directed at Turkish investors. Timeline for the setup phase: typically measured in weeks once the jurisdictional analysis is complete, though the licensing of the distributor adds material lead time.
Profile B – offshore vehicle, Turkish-licensed CASP as local custody relay. The fund vehicle remains offshore, but the digital-asset holdings that have a Turkish nexus – assets acquired from Turkish counterparties, or held for accounts that include Turkish investors – are channeled through a Turkish-licensed CASP acting as sub-custodian. This structure adds a regulated counterparty on the Turkish side and reduces the regulatory gap, but it introduces the CASP's own capital and operational constraints into the custody chain. Asset segregation must be documented carefully at both levels.
Profile C – Turkish-domiciled fund vehicle, SPK-regulated custody. For managers who expect Turkish-resident investor capital to constitute a material share of the fund's AUM over time, a Turkish-domiciled vehicle under the SPK's fund regime provides the cleanest regulatory alignment. Custody is arranged with an SPK-eligible institution from the outset. The trade-off is the regulatory compliance burden of operating within Turkey's capital-markets regime, including the ongoing reporting and audit obligations that the SPK requires.
In our cross-border practice, Profile A is the entry structure for managers with limited initial Turkish exposure. Profile B is the bridge where Turkish investor capital is significant but the manager does not yet justify the overhead of a Turkish fund vehicle. Profile C is the end-state for managers building a durable Turkish investor base.
How do AML obligations and banking interact with fund custody in Turkey?
The Travel Rule (the obligation under the FATF Recommendations to pass originator and beneficiary data with a virtual-asset transfer) applies to crypto-asset transfers within the Turkish perimeter. A fund moving digital assets into or out of a Turkish-licensed CASP will find that the custodian applies Travel Rule procedures, including the collection of originator data and the screening of beneficiary information against sanctions lists. This is operationally material for a fund that expects to move assets frequently – at subscription, redemption, or rebalancing – because each transfer must satisfy the data-completeness check before it settles.
Banking is the parallel constraint. Turkish banks that service investment vehicles with digital-asset allocations apply their own AML/CFT due diligence to the custody chain. A custodian – or a sub-custodian – that cannot demonstrate a clean regulatory status under the SPK/CASP regime will find it difficult to maintain the banking relationships the fund needs for cash settlement, fee payment, and investor distributions. We have seen fund structures delayed or restructured at a late stage because the banking relationships had not been validated against the custody arrangement during the design phase.
The cross-border interaction between Turkish banking practice and the fund's offshore custodian is a particular point of friction. A Cayman fund with a BVI custodian and a Turkish-resident investor base will be asked by its Turkish correspondent bank to explain the custody chain, demonstrate segregation, and confirm the regulatory status of each link. Preparing that documentation in advance – rather than in response to a bank request – reduces the time cost and the risk of account restriction.
If a prior structuring attempt stalled or a custody account was closed, a second read of the structure can surface the underlying reason and the route back. Write to OBOLUS at info@oboluslaw.com or message us at t.me/oboluslaw.
What does the custody arrangement process look like in practice?
Establishing a compliant custody arrangement for a digital-asset fund with Turkish exposure follows a recognizable sequence, though the timeline at each step depends heavily on the chosen structure and the existing regulatory status of the parties.
The first step is the jurisdictional and structural analysis: confirming the applicable Turkish regulatory perimeter for the intended fund activities, mapping the custody function against the SPK and CASP requirements, and selecting the fund-domicile and custody-domicile combination that fits the investor base and asset mix. This step is not a formality. The analysis changes materially depending on whether the manager is Turkey-based, whether Turkish-resident investors exceed a material threshold of the AUM, and whether the digital assets held include instruments that the SPK classifies as capital-markets products.
The second step is custodian selection and due diligence. The custodian – or the CASP acting as sub-custodian – must be vetted for its regulatory status, its asset-segregation practices, its Travel Rule capability, and its banking relationships. A custodian that passes the technical screen but cannot maintain a banking relationship with a Turkish correspondent bank creates a settlement risk that undermines the custody arrangement in practice.
The third step is documentation. The custody agreement must address segregation, asset valuation, reporting frequency, and the process for redemption settlements. For a fund with a digital-asset allocation, the agreement should also address the treatment of hard forks, airdrops, and staking rewards – events that change the asset pool without a fund instruction. Fund counsel in Turkey and in the domicile jurisdiction should review the agreement in parallel.
The fourth step is AML/CFT onboarding. The custodian will conduct its own due diligence on the fund and on its investors, applying the SPK's and FATF's standards. This step includes the Travel Rule data-collection process and the sanctions screening of the investor base. Onboarding timelines vary; a fund with a complex beneficial-ownership structure or with investors from high-risk jurisdictions will face a longer process.
The fifth step is ongoing compliance: periodic reporting to the SPK (for Turkey-regulated elements), annual audit of the custody arrangement, and monitoring of regulatory developments as Turkey's CASP regime continues to develop. The regime is not static. Managers who set the custody arrangement at launch and do not revisit it as the rules evolve carry a growing compliance gap.
Illustrative matter: restructuring a cross-border fund custody chain
Earlier this year, a fund manager with an established digital-asset vehicle domiciled in a leading offshore jurisdiction approached us after a Turkish-resident institutional investor declined to complete its subscription. The investor's own compliance team had flagged that the custody chain did not include a Turkish-licensed CASP and that the fund documents did not describe how the Travel Rule would be satisfied on transfers involving Turkish counterparties. The fund was otherwise well-structured. The custody gap was specific and addressable. We mapped the regulatory interaction between the fund's offshore custodian and the Turkish perimeter, identified an SPK-eligible CASP that could act as a sub-custodian relay for the Turkish-nexus holdings, and revised the custody agreement and the fund's offering documents to reflect the two-tier arrangement. The institutional investor completed its subscription in the following quarter. The revised structure also resolved a banking-relationship query that the fund's Turkish correspondent had raised several months earlier but that had not been connected to the custody question at the time.
What are the most common mistakes in Turkish fund custody structuring?
The first and most frequent mistake is treating custody as a boilerplate term in the fund agreement rather than as a live regulatory question. Fund counsel experienced in conventional offshore structures will often default to standard language on asset segregation that satisfies the Cayman or BVI fund regulator but does not address the Turkish CASP perimeter. The mismatch does not surface until a Turkish investor, a Turkish bank, or the SPK itself asks the question.
The second mistake is selecting a custodian on technical capability alone without validating its Turkish regulatory status and its banking relationships. A highly capable custodian with no Turkish correspondent-banking relationship creates a settlement problem at precisely the moment it matters most: redemption.
The third mistake is conflating the fund's tax position with the custody question. The two interact – a custodian that holds assets in a jurisdiction with a favorable treaty position may improve the fund's tax outcomes – but they are not the same analysis. Structuring custody to optimize tax without regard to the regulatory perimeter of the custodian typically produces a structure that solves one problem while creating another.
The fourth mistake is deferring the AML/CFT onboarding analysis. The Travel Rule compliance requirement means that the custodian needs investor data – and the investor needs to provide it – before the first transfer. A fund that launches without resolving this sequence will find that its first subscription is delayed by an AML backlog rather than by any substantive legal problem.
Self-assessment: is your Turkey-facing fund custody arrangement sound?
Fund managers can use the following indicators to assess whether the custody arrangement merits a fresh legal review.
First: can you identify which regulatory regime – the SPK's fund custody rules, the Turkish CASP licensing requirements, or both – applies to the way your fund holds its digital-asset allocation? If the answer is unclear, the analysis has not been done.
Second: does the custodian agreement address the specific events that digital-asset holdings generate – hard forks, staking rewards, airdrops – and specify who bears the operational and legal risk of each? Standard securities-custody agreements do not. A digital-asset fund needs a custodian agreement that does.
Third: has the fund's AML/CFT posture been validated against the Travel Rule requirements that the Turkish custodian or sub-custodian will apply? If Travel Rule onboarding has not been completed for the Turkish-nexus portion of the investor base, that is an outstanding compliance item.
Fourth: has the banking relationship for the Turkish custody leg been confirmed with the relevant correspondent? A custody arrangement that works on paper but cannot settle in cash is not a functioning custody arrangement.
Fifth: is there a process for reviewing the custody arrangement as Turkish regulations evolve? The CASP licensing regime in Turkey is relatively recent, and the SPK continues to issue guidance. A custody arrangement locked to the rules as they stood at launch will drift out of compliance without a review mechanism.
Related at OBOLUS
- Funds and investment vehicles for digital-asset businesses – structuring, domicile, and regulatory advice for crypto fund managers
- Alternative investment funds for digital assets in the United States – federal and state licensing for digital-asset fund managers operating in the US
- Client funds safeguarding in Liechtenstein – regulated safeguarding arrangements under the Liechtenstein regime for digital-asset businesses
FAQ
Where should a crypto fund be domiciled?
Domicile selection depends on the investor base, asset mix, and redemption profile – not on a generic ranking of offshore centres. A fund with significant Turkish-resident investor capital needs a domicile and custody structure that either satisfies the Turkish CASP perimeter or uses a compliant sub-custodian relay. Leading options include Cayman, BVI, and EU-passporting jurisdictions, each with different implications for Turkish investor access and tax treatment. No single answer applies across all profiles.
Does a digital-asset fund manager need a licence?
In most cases, yes. A manager providing portfolio management or investment advice in connection with digital assets will require authorization under the applicable regime – whether the SPK in Turkey, the VARA regime in Dubai, the FCA in the United Kingdom, or another relevant authority. The precise licence category depends on the manager's activities, the nature of the assets managed, and where the manager and its investors are located. Unlicensed management creates regulatory and civil liability exposure for the manager and for the fund's directors.
How is custody arranged for a crypto fund?
Custody for a digital-asset fund requires an eligible custodian – a licensed entity with the technical infrastructure to hold private keys or equivalent access controls, the legal framework to segregate fund assets from its own, and the AML/CFT capability to satisfy the Travel Rule on transfers. For a fund with Turkish exposure, the custody chain must also address the SPK's requirements and, where applicable, the Turkish CASP licensing perimeter. The custodian agreement should cover asset segregation, valuation, reporting, and the treatment of digital-asset-specific events such as forks and staking.
OBOLUS is an independent digital-asset law boutique acting only for businesses. We advise exchanges, custodians, token issuers, and funds on licensing across more than seventy jurisdictions, on disputes and on-chain asset recovery across more than twenty-five forums, and on the tax, banking, and compliance structures that sit around them. Digital assets are the whole of our practice. We match domicile to investor base, asset mix, and redemption profile – because the wrong domicile locks in tax leakage and limits which investors you can accept. We advise crypto exchanges, custodians, token issuers, and funds across more than seventy licensing jurisdictions. To discuss your custody structure or fund domicile question, contact info@oboluslaw.com.
By Lydia Brennan, Tax & Structuring Analyst – specialist in cross-border fund structuring, domicile selection, and the tax and custody interaction for digital-asset investment vehicles.
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.