A Cayman Islands master-feeder fund structure channels capital from two or more separate feeder funds – a Cayman Islands exempted company or exempted limited partnership (ELP) for non-US and US tax-exempt investors, and a Delaware limited partnership for US taxable investors – into a single master fund. The master fund is usually a Cayman exempted company or ELP, which holds all portfolio assets and executes the investment strategy. Fund managers use it to pool investors with different tax profiles into one unified trading book instead of running duplicate parallel portfolios.
How the Structure Works
The master-feeder model separates capital-raising from trading. Two or more feeder funds – commonly a Cayman Islands exempted company or ELP for non-US and US tax-exempt investors such as pension plans and endowments, and a Delaware limited partnership for US taxable investors – each invest substantially all their assets into one master fund.
Under Cayman Islands fund practice, a feeder is generally defined as investing more than 51% of its assets into the master, directly or through an intermediary. The master fund, almost always a Cayman exempted company or exempted limited partnership, holds the underlying portfolio and executes every trade.
Why Managers Use This Structure
Pooling US taxable, US tax-exempt and non-US investors into one master fund lets a manager run a single unified portfolio instead of trading near-identical books for each investor group. This avoids the “cash drag” and execution mismatches that arise when parallel funds independently buy and sell the same positions. It cuts duplicate brokerage, reconciliation and administration costs. And it also lets US tax-exempt and non-US investors access the strategy through an offshore Cayman feeder that shields them from US effectively connected income and unrelated business taxable income (UBTI), while the Delaware feeder preserves flow-through US tax treatment for taxable investors.
Typical Entities for Master and Feeder Vehicles
The master fund is usually a Cayman Islands exempted company or an exempted limited partnership. This choice depends on whether corporate or partnership tax treatment suits the strategy at the master level.
Offshore feeders serving non-US and US tax-exempt investors typically use the same two forms. Meanwhile, the US feeder is generally a Delaware limited partnership or limited liability company. Each vehicle is a distinct legal structure with its own governing documents, directors or general partner, and service providers.
CIMA Registration Requirements
Cayman Islands mutual funds, including master and feeder funds, are regulated under the Mutual Funds Act and supervised by the Cayman Islands Monetary Authority (CIMA).
A Cayman feeder typically qualifies as a “registered mutual fund” by meeting one of two tests: equity interests listed on an approved stock exchange, or a minimum initial investment of US$100,000 per investor.
Registered feeders must file an offering document, audited financial statements and annual returns with CIMA. Where a Cayman feeder is itself registered with CIMA, its master fund must also register, though a master fund files only prescribed particulars, not a full offering document.
wb.group’s corporate services and accounting teams regularly support Cayman Islands master-feeder launches, from entity formation through to ongoing fund administration. If you are structuring a new fund or reviewing an existing platform, our teams can help you choose the right master and feeder vehicles for your investor base.
Related reading: What is the difference between an open-ended and a closed-ended fund in the Cayman Islands? | What is the difference between a Cayman Islands exempted company and an exempted limited partnership (ELP)? | What are CIMA’s registration categories for Cayman Islands mutual funds?
FAQs
A Cayman Islands master-feeder fund structure channels capital from two or more separate feeder funds – a Cayman Islands exempted company or exempted limited partnership (ELP) for non-US and US tax-exempt investors, and a Delaware limited partnership for US taxable investors – into a single master fund. The master fund is usually a Cayman exempted company or ELP, which holds all portfolio assets and executes the investment strategy. Fund managers use it to pool investors with different tax profiles into one unified trading book instead of running duplicate parallel portfolios.
The master fund is almost always a Cayman Islands exempted company or exempted limited partnership (ELP), chosen based on whether the strategy is better served by corporate or partnership tax treatment at the master level. It holds all portfolio investments and executes every trade on behalf of the feeder funds that invest in it.
A Cayman feeder generally registers with the Cayman Islands Monetary Authority (CIMA) as a “registered mutual fund” under the Mutual Funds Act if its equity interests are listed on an approved stock exchange or its minimum initial investment is US$100,000 per investor. Registered funds must file an offering document, audited financial statements and annual returns with CIMA.
A Cayman master fund must register with CIMA as a master fund if it has one or more feeder funds that are themselves registered or licensed with CIMA. Unlike a standard registered feeder, a master fund is not required to prepare its own offering document and instead files prescribed particulars.
Under Cayman Islands fund practice, a feeder fund is one that invests more than 51% of its assets into the master fund, either directly or through an intermediary entity. Most master-feeder structures use two or more feeders in parallel to serve investors with different tax profiles.
A single fund can create tax friction for different investor types. US tax-exempt and non-US investors generally want to avoid US effectively connected income and unrelated business taxable income (UBTI), while US taxable investors want US flow-through tax treatment. The master-feeder structure lets each investor group access the same underlying portfolio through a feeder suited to its own tax position, without the manager running separate trading books.