Family Office Co-Invest SPVs, Explained

A family office co-invest SPV is a single-asset vehicle the office (or a club of offices) uses to take a co-invest next to a fund, rather than stuffing that name into the main partnership or writing it on a personal account. The point is isolation: one K-1, one cap table, one liability box, one exit. It is not a performance product and not a way to promise a better return than the fund.

This is general information, not legal, tax, or investment advice, and not an offer to sell any security. Family-office facts vary (single family vs multi-family, who is the member, who is the manager). Counsel and the tax advisor own classification, securities-law, and any adviser-registration analysis.

Why a family office co-invest SPV sits beside the fund

Co-invests arrive as a one-name allocation: the GP of Fund III offers a strip of the same round the fund is buying, often with reduced or no management fee and carry on that strip. The office can write the check from the main family partnership, from a holdco, or from a new SPV.

Three operational reasons the third option exists:

Liability. A Delaware LLC’s debts and obligations are the LLC’s. 6 Del. C. § 18-303(a) (fetched 2 Sep 2026) states that no member or manager is personally obligated for those debts solely by reason of being a member or acting as a manager. Subsection (b) lets a member or manager agree otherwise by contract. The SPV is the box. It does not erase guarantees you sign, and it does not erase anyone’s own torts. It does stop a portfolio-company lawsuit, a broken-deal expense, or a capital-call fight on this name from automatically sitting in the same legal person as the rest of the family’s book.

K-1 hygiene. A domestic LLC with two or more members that does not file Form 8832 is classified as a partnership for federal income tax (2025 Instructions for Form 1065, LLC definition and tip; fetched 2 Sep 2026). The partnership files Form 1065 and furnishes Schedule K-1 to each partner. One co-invest, one partnership, one K-1 line of sight. Drop the same co-invest into a wide family partnership that already holds operating businesses, real estate, and three funds, and you mix 704(c) layers, different distribution waterfalls, and a K-1 that the next generation cannot read. The SPV does not reduce tax by magic. It keeps this deal’s items on their own schedule.

Side-by-side with the fund. The fund has its own LPA, reserve, and recycling. The co-invest is a separate security issued by a separate vehicle. That is the point of SPV vs venture fund: the fund is a program; the SPV is a name. When the company later does a recap, a secondary, or an exit, you do not want this allocation trapped inside a vehicle that still has other assets and a different set of transfer restrictions.

None of that is a claim that co-invests outperform the fund. Fee and carry on the strip, if any, are whatever the co-invest documents say.

How the vehicle is usually built

Issuer. Delaware LLC, certificate of formation under 6 Del. C. § 18-201 (fetched 2 Sep 2026). The LLC exists when that certificate is filed (or on a later date specified in it), and it continues until cancellation. The LLC agreement can be effective as of filing.

Members. Single-family: often a family holdco or a trust as the sole economic member, with a management company as managing member. Multi-family club: several offices as members. Two or more members is what usually puts you in partnership classification unless you elect otherwise. A single-member LLC is disregarded by default; it may still need an EIN for banking (form the entity with the state before you apply for an EIN; you can request one for banking even if you do not otherwise need it for federal tax).

Manager. The family office entity, an individual principal, or — when the co-invest is GP-led — the deal’s GP as manager of the SPV. Who signs, who has banking authority, and who can admit members belong in the operating agreement, not in Slack.

Cash. Dedicated account in the SPV’s name. Do not take the co-invest wire into the family’s operating account and “journal it later.”

Docs. PPM or deal memo if you are selling to anyone who is not already inside the family; subscription; operating agreement. If other families are in the vehicle, you are in a private offering. Most of these closes run under Rule 506. That is a securities-law file, not a “friends and family” nickname.

On Allocations, a Standard SPV is $9,950 one-time (up to 35 investors, one close, VC, five-year term, +$100 per extra investor). Premium is $19,500 one-time (up to 50 investors, extra closes $2,000). A committed fund is $19,500/year. Platform carry is 0%. Additional fees may apply. See fees (fetched 2 Sep 2026). Banking is included in onboarding as a dedicated account per vehicle.

What “side-by-side” has to mean in the documents

The fund buys. The SPV buys. Same round, often same SPA, sometimes a side letter that says the co-invest vehicle gets the same price and most of the same information rights. What it does not automatically get:

• The fund’s excuse, default, and recycling mechanics

• The fund’s key-person or removal rights

• The family’s other holdings as collateral

• A pass-through of the GP’s fiduciary file unless the SPV’s own agreement says so

If the office wants MFN against other co-investors, say so in the SPV subscription or a side letter. If the office wants the SPV to be able to take a follow-on without opening a second vehicle, say so in the purpose clause and the capital commitment. If the office does not want follow-ons in this vehicle, lock the purpose to a single closing and a single issuer. Ambiguous purpose clauses are how a “co-invest SPV” becomes an unfunded mini-fund.

Transfer restrictions should match how the family actually re-titles assets (trust to trust, death, divorce). A standard syndicate OA that blocks all transfers without manager consent will fight the family’s estate plan. Fix it at formation.

Skip a separate SPV when the check is de minimis into one disregarded entity, when the “co-invest” is actually a multi-name fund program (emerging managers if you are building toward a first close), or when you need a continuation-style LP election. Other offices and “close friends” are purchasers; run an exemption.

Isolation fails if cash and tax work run through another pile: EIN and bank in the SPV’s name, subscriptions that match the members, capital accounts at close, K-1s from this partnership, exit proceeds into this account. That admin is what SPV administration includes. Collect W-9/W-8 even when the member is another family entity.

No return figures belong here. A co-invest can lose money or sit for a decade. The SPV’s job is to keep that outcome in its own box.

Why would a family office use a co-invest SPV instead of writing a check from the main partnership?

To isolate one name: Delaware LLC liability under § 18-303, a dedicated K-1 for a partnership-classified vehicle, and a side-by-side holding next to the lead fund with its own transfer and exit rules. It is an ops and liability choice, not a promise of better performance.

Does a single-family co-invest SPV still file a K-1?

If it is a multi-member LLC taxed as a partnership, yes — Form 1065 and Schedule K-1s. A single-member LLC that is disregarded by default generally does not file Form 1065 as a partnership; the owner reports the items. Classification is a tax-advisor call. This is general information, not tax advice.

Can several family offices share one co-invest SPV?

Yes, that is a club SPV. You then have a private offering, a cap table with multiple members, and partnership tax. Use an exemption (typically Rule 506), a real subscription, and an operating agreement that covers transfers among offices. Published Standard SPV pricing includes up to 35 investors; extra investors are +$100 each.

Is a family office co-invest SPV the same as the family’s main fund?

No. The fund is a multi-asset (or multi-deal) program. The co-invest SPV is one allocation in its own issuer, sitting beside the fund on the same round. Mixing them in one vehicle re-creates the K-1 and liability pile the SPV was meant to avoid.

What does Allocations charge for this vehicle?

Standard SPV $9,950 one-time (35 investors, one close, VC, five-year term). Premium SPV $19,500 one-time (50 investors; extra closes $2,000). Fund $19,500/year. Extra investors +$100. Platform carry 0%. Banking is included in onboarding. Additional fees may apply; see /fees.