Cayman Fund Vehicle Types: Choosing Between an Exempted Company, SPC, Exempted Limited Partnership, LLC and Unit Trust

The five Cayman fund vehicle types answer three questions, and a manager who asks them in the right order rarely picks the wrong one. The first is whether investors can redeem at their own option. That feature alone decides whether the vehicle is a mutual fund under the Mutual Funds Act (2025 Revision) or a private fund under the Private Funds Act (2025 Revision). The second is whether the investors need the vehicle to be tax transparent or tax opaque. The third is who will govern it: a board, a general partner, a manager or a trustee. For most open-ended hedge fund and digital asset strategies the answer is an exempted company or a segregated portfolio, for drawdown strategies an exempted limited partnership, and for Japanese institutional capital often a unit trust.

"Managers tend to start with the vehicle they have seen most often and then look for reasons to keep it. We would reverse that. Fix the redemption terms, because the Act follows them. Then list the investors by tax profile, because transparency is the one feature that cannot be bolted on later. Only then choose the legal form, and be honest about whether a segregated portfolio already gives you what a standalone company would. The expensive mistakes we see are almost never about the wrong statute. They are about a vehicle chosen before anyone knew who was going to invest in it." David Lloyd, Chief Executive Officer at CV5 Capital

Executive Summary

Cayman offers five fund vehicles: the exempted company, the segregated portfolio company, the exempted limited partnership, the LLC and the unit trust. Each can be a mutual fund or a private fund. The choice turns on liquidity terms, investor tax profile, governance and cost, in that order.

• Redeemability at the investor's option decides the regime under the Mutual Funds Act or the Private Funds Act, and every vehicle can sit under either.
• A company and a segregated portfolio are tax opaque by default for US purposes, a partnership is transparent by default, and an LLC can be either by election.
• The governing body and its statutory duty differ by vehicle: directors, a general partner, managers or a trustee.
• Only the segregated portfolio company offers statutory ring-fencing between portfolios within one legal entity, under Part 14 of the Companies Act (2026 Revision).
• A platform segregated portfolio delivers an exempted company share class with ring-fencing and no new entity; partnerships and unit trusts require a standalone vehicle.
• Standalone is right where the strategy is drawdown, where investors demand a partnership or a trust, or where the manager needs to own the vehicle outright.

The Five Vehicles in One Matrix

The statutes are long, but the differences that matter to a manager fit in one table. Both the Mutual Funds Act and the Private Funds Act define a fund as a company, unit trust or partnership, and both identify the operator by legal form: a director, a general partner or a trustee. The Private Funds Act adds that where the company is an LLC, the operator is its manager.

Three of the five are building blocks of one another. The general partner of a partnership is usually an exempted company or an LLC, a segregated portfolio company is an exempted company registered under section 213, and a unit trust needs a corporate trustee. Choosing a vehicle is therefore also choosing how many entities the manager will be responsible for.

Question One: Open-Ended or Closed-Ended Decides the Regime, Not the Vehicle

The most persistent misunderstanding is that companies are hedge funds, partnerships are private equity funds, and the Act follows the label. It does not. The Mutual Funds Act defines an equity interest as a share, trust unit, partnership interest or similar interest that is redeemable at the option of the investor. The Private Funds Act defines an investment interest as one that is not. The vehicle type appears in neither test. A partnership with quarterly redemption rights is a mutual fund; a company whose shares cannot be put back before winding up is a private fund.

The Mutual Funds (Amendment) Act, 2026 made the point explicit for LLCs by inserting "LLC interest" into the definition of equity interest, matching the Private Funds Act. Every vehicle in the table can therefore sit under either regime. CV5 has set out the redeemability test and its consequences in which CIMA regime applies to a Cayman fund. The regime question comes first because it fixes the audit, valuation and registration obligations before any legal form is chosen.

The regime touches the vehicle only at the margins. For a licensed fund, section 4(1)(a) of the Mutual Funds Act accepts a licensed trust company as trustee of a unit trust in place of a registered office. Section 5(1)(a) of the Private Funds Act ties registration to twenty-one days after accepting capital commitments, which suits the drawdown mechanics of a partnership. Neither point forces the choice.

Question Two: Tax Transparency, Opacity and Who Is Investing

Cayman imposes no tax on the income or gains of any of the five vehicles, and each can obtain an undertaking from the Financial Secretary that no future Cayman tax will apply. An exempted company obtains it under the Tax Concessions Act. A partnership, an LLC and an exempted trust obtain it for up to fifty years under sections 38, 58 and 81 of their own Acts. Transparency is therefore never a Cayman question. It is about how the investor's home tax system characterises the vehicle, and the United States framework most often drives the choice.

Under the US entity classification regulations at 26 CFR 301.7701-3, a foreign entity in which every member has limited liability is by default taxed as a corporation. A foreign entity with two or more members, at least one of whom lacks limited liability, is by default a partnership. An exempted company and an SPC are therefore corporations by default. An exempted limited partnership is a partnership by default, because the general partner is liable for its debts under section 4(2) of the Exempted Limited Partnership Act. An LLC is a corporation by default but can elect partnership treatment. Since any of them can elect, the default matters less than whether the investors want transparency at all.

Two consequences follow. A fund with both US taxable and non-US or tax-exempt investors cannot satisfy everyone with one vehicle, which is why the master-feeder exists; CV5 covers the mechanics in Cayman master-feeder structures for traditional managers. And the unit trust preference is not about transparency. It is a preference for a form Japanese investors and their intermediaries already know how to hold and report, as CV5 explains in Cayman unit trusts for Asian institutional investors.

Question Three: Who Governs, and What Duty They Owe

Allocators conducting operational due diligence ask who is responsible for the fund and what standard that person is held to. The answer changes with the vehicle.

A company is governed by its board, and directors owe fiduciary duties to the company under general law. For a regulated mutual fund constituted as a company, the directors also fall within the Directors Registration and Licensing Act. In a segregated portfolio company one board serves every portfolio. Section 219(6) of the Companies Act places on those directors a specific duty to maintain procedures that keep each portfolio's assets separate and prevent transfers between portfolios other than at full value. That is why the board of a platform SPC is not a formality.

A partnership is governed by its general partner, which section 19(1) of the Exempted Limited Partnership Act requires to act at all times in good faith and, subject to the partnership agreement, in the interests of the partnership. Limited partners must stay out of the conduct of the business under section 14(1), with the safe harbours in section 20. An LLC is governed by its members by majority, or by managers if the LLC agreement so provides. Section 26(4) of the Limited Liability Companies Act is the provision allocators should read: unless the agreement says otherwise, a manager owes no duty beyond good faith, and even that can be restricted. A unit trust is governed by its trustee, which holds the assets and owes trust law duties to the unitholders.

Liability, Ring-Fencing and What Each Vehicle Does Not Protect

Every vehicle gives investors limited liability in the ordinary case. Shareholders are liable only for unpaid share capital, and LLC members are not personally liable by reason of membership under section 20(1) of the Limited Liability Companies Act. Limited partners are not liable beyond their commitment unless they take part in the conduct of the business. Section 34 adds a six month clawback of returned contributions where the partnership was insolvent and the limited partner knew it. Unitholders hold beneficial interests; the trustee is the contracting party.

Ring-fencing between strategies is a different question, and only the segregated portfolio company answers it by statute. Section 220 of the Companies Act makes segregated portfolio assets available only to creditors and shareholders of that portfolio and protects them absolutely from the creditors of every other portfolio. Section 221 sets the order of recourse: the portfolio's own assets, then the general assets unless the articles prohibit it, and never another portfolio. Section 218 requires every contract for a portfolio to identify it and obliges the directors to correct any misattribution. CV5 sets out how that machinery operates day to day in the complete guide to the Cayman segregated portfolio company.

Three limits should be stated plainly. The segregation is a creature of Cayman statute, and its treatment by a court or counterparty elsewhere is a matter of that jurisdiction's law. That is why prime brokerage, custody and exchange accounts must be documented at the portfolio level rather than assumed. A multi-class exempted company has no equivalent protection: a loss in one class is a loss on the single balance sheet. A partnership or unit trust separates strategies only by forming a separate vehicle for each.

Formation and Running Cost Drivers

Government fees are a small part of the total cost of a fund, but they show the structure of the cost clearly. The figures below are the Registry fees in each Act or its fee regulations, in Cayman Islands dollars as the instruments state them. The CIMA fees are from the Mutual Funds (Fees) Regulations (2026 Revision) and the CIMA fee schedule updated 1 January 2026. Service provider fees, which dominate the budget, are not statutory and are not shown.

The real drivers sit behind the table. A standalone partnership needs a general partner entity, with its own registration, annual fee and accounts. A unit trust needs a trustee, and trustee fees are a recurring line a company-form fund does not carry. Every standalone vehicle needs its own audit, administration agreement, bank and brokerage onboarding and board or operator arrangements. A second segregated portfolio within an existing SPC adds a portfolio fee at the Registry and at CIMA, and reuses the board, administrator, auditor and banking relationships already in place. That reuse is the economic case for the platform model, which CV5 sets out with figures in the standalone fund versus platform segregated portfolio decision.

When Each Vehicle Is the Wrong Answer

Published comparisons describe what each vehicle is good for. The more useful discipline is to recognise when one has been chosen for the wrong reason.

• The exempted company is the wrong answer where the investors are predominantly US taxable with no onshore feeder, and where two strategies with different risk profiles will run under one roof, because share classes do not ring-fence anything.
• The segregated portfolio company is the wrong answer where a manager forms its own SPC for a single strategy with no second portfolio in prospect, or where counterparties at the main trading venues will not document at the portfolio level.
• The exempted limited partnership is the wrong answer for a liquid strategy offering regular redemptions to non-US investors, because it imports a general partner, capital accounts and partnership tax reporting nobody asked for.
• The LLC is the wrong answer as the fund itself where allocators expect a board with fiduciary duties, because the statutory default is a manager owing only good faith. It remains a strong candidate for the general partner or a carry vehicle.
• The unit trust is the wrong answer where no Japanese or other trust-preferring institution is in the pipeline, because the trustee cost is carried for an investor who is not there.

Each error shares a cause: the vehicle was chosen before the investor list and the dealing terms were settled.

How Each Vehicle Maps to a Platform Segregated Portfolio

A platform such as CV5 SPC or CV5 Digital SPC is a segregated portfolio company. Each participating manager is appointed investment manager to its own segregated portfolio, investors subscribe for segregated portfolio shares under section 217, and the segregation in sections 219 to 222 applies between that portfolio and every other. CV5 provides the regulated vehicle, the board, the service provider architecture and the establishment process. It does not manage the strategy or select the investments; that is the appointed manager's role. A segregated portfolio therefore gives the manager what a standalone exempted company would, with ring-fencing a multi-class company lacks, and without forming or governing a new entity.

That mapping is exact for the company form and does not exist for the others. A segregated portfolio issues shares, so it is tax opaque by default and suits the same investors as an exempted company. It can be a mutual fund or a private fund depending on its redemption terms, and it can serve as the master or the offshore feeder if a US onshore partnership is added alongside. What it cannot be is a partnership interest, an LLC interest or a trust unit. Investors who require one of those need a standalone vehicle.

When standalone is the right answer regardless

Four situations point to a standalone vehicle irrespective of platform economics. The first is a drawdown strategy with committed capital and carried interest, where the partnership form expresses the deal; CV5's guide to Cayman exempted limited partnerships and the GP and LP structure sets out the mechanics. The second is a Japanese institutional mandate that will only hold units in a trust. The third is a single anchor investor negotiating bespoke governance or a board seat incompatible with a shared board. The fourth is a manager that intends to own the fund entity outright from day one, for example to build a fund complex around it or to sell the management business with the vehicle attached.

Outside those cases the segregated portfolio is usually the more disciplined answer for an emerging manager, because it takes the entity count, the governance build and the provider onboarding off the critical path. The wider sequence of decisions is drawn together in CV5's Cayman fund formation guide.

Key Takeaways

• Settle the redemption terms first, because they decide whether the fund is a mutual fund or a private fund whatever vehicle is used.
• List the investors by tax profile before choosing a legal form: US taxable capital points to a partnership or an onshore feeder, most other investors to a corporate vehicle.
• Choose the governing body deliberately: a board with fiduciary duties, a general partner acting in good faith, an LLC manager with contractual duties, or a trustee.
• Form an SPC only where more than one portfolio is genuinely in prospect, and document trading, custody and banking at the portfolio level from the outset.
• Treat a platform segregated portfolio as an exempted company share class with ring-fencing, and go standalone only where a partnership, a trust or outright ownership is required.
• Count the entities before counting the fees: general partners, trustees and second audits drive recurring cost far more than Registry or CIMA charges.

Frequently Asked Questions

What are the main types of Cayman fund vehicle?

There are five: the exempted company, the segregated portfolio company, the exempted limited partnership, the limited liability company and the unit trust. Each is formed under its own Act and each can be regulated as a mutual fund or a private fund depending on whether investors can redeem at their own option. Open-ended hedge funds usually use a company or a segregated portfolio, drawdown funds usually use a partnership, and Japanese institutional mandates often use a unit trust.

What is the difference between an exempted company and an exempted limited partnership for a fund?

An exempted company is a body corporate governed by a board, issues shares and is tax opaque by default for US purposes. An exempted limited partnership is not a body corporate, is governed by a general partner that is liable for its debts, issues partnership interests with capital accounts and is tax transparent by default. The company suits open-ended strategies and non-US or tax-exempt investors. The partnership suits committed capital, carried interest and US taxable investors.

Can a Cayman LLC be used as a fund?

Yes. The Private Funds Act (2025 Revision) defines an investment interest to include an LLC interest, and the Mutual Funds (Amendment) Act, 2026 inserted LLC interests into the definition of equity interest under the Mutual Funds Act. In practice the LLC is used more often as a general partner, manager or carry vehicle than as the fund itself. Its statutory default gives the manager only a duty of good faith, and many allocators expect a board with fiduciary duties.

When should a manager use a Cayman unit trust instead of an exempted company?

When the investor base includes Japanese institutions, and in some cases other Asian institutions, that hold and report fund interests as units in a trust. The unit trust is functionally a fund and legally a trust, with a trustee holding the assets and investors holding units. Absent that investor demand, the trustee cost and the trust deed are usually an unnecessary addition, and an exempted company or segregated portfolio serves the same open-ended strategy.

What does a segregated portfolio company protect that an exempted company does not?

Under Part 14 of the Companies Act, the assets of each segregated portfolio are available only to the creditors and shareholders of that portfolio and are protected from the creditors of every other portfolio, within a single legal entity. A multi-class exempted company has no equivalent provision: all share classes share one balance sheet. The protection is statutory in Cayman and has to be supported operationally by documenting trading, custody and banking relationships at the portfolio level.

Does using a platform segregated portfolio limit the choice of vehicle?

A platform segregated portfolio is a share class of a segregated portfolio company, so it delivers the corporate, tax opaque form with statutory ring-fencing. It can be open-ended or closed-ended and can serve as a master or offshore feeder. It cannot be a partnership interest, an LLC interest or a trust unit. Managers whose investors require one of those forms use a standalone vehicle, sometimes alongside a platform portfolio for the rest of the investor base.