Master-Feeder Fund Structure: When GPs Need Two Vehicles

A master-feeder fund structure is two or more feeder vehicles that invest into one master. US taxable LPs usually sit in a Delaware feeder. Non-US and many US tax-exempt LPs sit in an offshore feeder, often Cayman. The master holds the book. A US-only LP base typically does not need this stack; a single Delaware fund or SPV is enough.

This is general information, not tax or legal advice. Counsel and a tax adviser own the facts of any vehicle.

What a master-feeder fund structure is

The SEC’s Form N-1A glossary, written for registered open-end funds, defines a “Master-Feeder Fund” as a two-tiered arrangement in which one or more feeder funds hold shares of a single master fund, in accordance with section 12(d)(1)(E) of the Investment Company Act (SEC, Form N-1A). Private funds copy the same economic pattern without that registered-fund filing: feeders raise from defined LP groups; the master holds the portfolio and runs the strategy.

Private funds are still excluded from the definition of an investment company if they fit 3(c)(1) or 3(c)(7). A traditional 3(c)(1) fund is capped at 100 beneficial owners; a 3(c)(7) fund is limited to qualified purchasers; a qualifying venture capital fund under 3(c)(1) may have no more than 250 beneficial owners and no more than $12 million in aggregate capital contributions and uncalled commitments (SEC, Private Funds, last reviewed 24 April 2026). Each feeder and the master is its own legal person. Beneficial-owner counting and look-through still have to be done on the actual stack, which is why this is an administration problem as much as a formation problem.

Cash and securities do not sit in three duplicate portfolios. LPs subscribe to a feeder. The feeder subscribes to the master. The master writes the checks into companies, secondaries, or other assets. Realizations travel back the same path: master to feeder to LP.

That path is the point of the structure. A GP who copies every deal into an onshore fund and an offshore fund has built parallels: two subscription books, two strips of the same round, and a policy for who gets how much of the next allocation. A master-feeder has one round, one stock certificate (or one convertible), and two (or more) sets of LPs looking through feeders at that same asset. If you are reconciling two cap-table lines in the same company, you did not build a master-feeder.

Documents multiply with the entities. Each feeder has an LPA or articles, a subscription booklet, and a side-letter log. The master has its own LPA. The GP of the master is usually the same firm as the GP of the onshore feeder; the offshore feeder may have a board of directors if it is a Cayman company. Do not let those boards and GPs be different people who have never seen each other’s minutes. Control has to be readable from the chart counsel draws on day one.

Who sits in which feeder

The split is tax and regulatory status, not geography of the GP.

Emerging managers copy this from hedge-fund and buyout practice. Venture does it when the first close already mixes US taxable angels with a non-US family office or a US endowment that will not take partnership UBTI. The Cayman feeder is the usual offshore seat; the formation path is the same work described in the Cayman Islands SPV and fund setup guide.

A “blocker” is a corporation in that chain — often the offshore feeder itself, or a corporation between the offshore feeder and a partnership master — so that what would have been partnership income is instead received as a dividend or as a corporate-level item. Whether a blocker is required, and where it sits, is a tax-structuring call. It is not a default setting on every Cayman vehicle.

US tax-exempt LPs care about unrelated business taxable income (UBTI), including debt-financed income. Non-US LPs care about effectively connected income (ECI) and US withholding on FDAP. A partnership master that borrows, trades frequently, or holds a US trade or business can create both. The feeder-plus-blocker pattern is how many GPs keep those LPs in the same deal without putting them on a US K-1. None of that is a promise that a given stack works for a given LP. The LPA, the feeder’s offering documents, and the LP’s own counsel decide.

QSBS, if it matters to a US taxable LP, is analyzed at the onshore feeder and the master, not at a corporate blocker. Do not tell a US angel they will “get QSBS through the Cayman feeder.” Send that question to tax counsel on the Delaware partnership, or keep that angel in the onshore feeder. The pass-through analysis is on whether SPV investors qualify for QSBS. Blockers that help tax-exempt and non-US LPs can be the wrong seat for a US individual who wanted pass-through character.

When a single Delaware fund or SPV is enough

Most first-time managers do not need a master-feeder.

Stay on one Delaware vehicle when all of the following are true, or close enough that counsel is comfortable:

• LPs are US persons (or a handful of non-US LPs who will take a US partnership K-1 and the withholding that may come with it).

• There is no tax-exempt LP that has told you it cannot accept UBTI.

• There is one strategy, one GP, and one close calendar.

• You are still in SPV or first-fund size, not running parallel onshore and offshore books.

A single-deal SPV is almost never a master-feeder. The investors subscribe to the LLC; the LLC buys the asset. Adding a Cayman feeder on top of a $2 million syndicate so that one non-US angel can avoid a K-1 is usually more legal entity than the check is worth. That angel can often subscribe into the Delaware vehicle with a W-8 and live with the tax file, or sit out.

A committed fund is the more common place this question appears. The 2026 guide to launching a venture capital fund is the formation path for the onshore book. Add feeders only when a named LP’s tax status forces a second vehicle, or when you are marketing a bona fide offshore sleeve, not because a pitch deck used the phrase “master-feeder.”

Parallel funds are a different design: two (or more) funds invest side by side into the same deals, each holding its own strip of the asset, with a rebalancing or allocation policy. A master-feeder has one portfolio. If you find yourself reconciling two cap tables in the same round, you built parallels, not a master.

What the administrator actually runs

A master-feeder multiplies the operating calendar. Each feeder has its own subscriptions, capital calls, bank account, and investor file. The master has its own books. Equalization, if the fund has subsequent closes, has to be computed so that a late LP in Feeder A is in the same economic seat as an early LP in Feeder A — and so that Feeder A and Feeder B own the correct percentage of the master. That math is fund administration, not a spreadsheet the GP updates after each wire.

The stack the GP should expect:

• Entity layer. Certificate of formation or exempted-company registration for each vehicle, EIN or local equivalent, governing documents, and a GP or board that actually controls the vehicle named in the LPA.

• Banking. A dedicated account per vehicle. Feeders receive LP wires; the master receives feeder wires and pays the companies. Mixing those flows is how you lose an audit trail.

• Investor onboarding. KYC/AML and tax forms at the feeder that the LP actually joins. The master onboards the feeders, not the underlying humans, unless someone is a direct master LP.

• Calls and distributions. Notices go to feeder LPs. The feeder calls the LP, then the master calls the feeder (or the documents collapse that into one notice). Distributions reverse the path.

• Tax file. US partnership feeders and a partnership master produce Form 1065 and K-1s. A corporate blocker produces a corporate return. Non-US LPs may receive a Form 1042-S on US-source amounts. The administrator coordinates the package; the tax adviser signs it.

FATCA and CRS live on the offshore feeder. A Cayman feeder that is a financial institution will have a reporting workstream — registration, investor self-certifications, and a local filing agent — that a Delaware-only fund does not. Treat that as a named item at formation, not a year-two surprise. Counsel and the Cayman administrator own the exact filing path.

What it costs in complexity, not a made-up invoice

There is no standard public price for a Cayman feeder plus Delaware master. Legal, registered-office, CIMA (if the vehicle is a registered or administered Cayman fund), FATCA/CRS, and a second audit all sit on top of the onshore fund. Quote them. Do not back into a number from someone else’s deck.

Allocations publishes a Standard SPV at $9,950 one-time and a fund at $19,500 per year, with 0% platform carry. That schedule is the onshore administration price, not a Cayman master-feeder turnkey. If the stack has an offshore feeder, budget counsel, the Cayman registered office, and the extra admin calendar as separate line items.

The decision rule is simple. If every LP can sit in one Delaware partnership without a blocker, form one Delaware partnership. If a real LP — endowment, non-US family office, foreign feeder-fund of funds — cannot, add the offshore feeder and, if counsel requires it, the blocker, and run them into one master. Two vehicles are a cost. Duplicate portfolios are a larger one.

This article is for informational purposes only and is not investment, legal, or tax advice. Entity choice, blocker placement, and partnership withholding depend on your facts. Speak with counsel and a tax adviser before you form a master-feeder.