When accredited investors buy pre-IPO shares on the secondary market, they typically choose between two structures: a direct transfer of shares into their own name, or membership interests in a special purpose vehicle (SPV) that holds the underlying shares. Both routes give you economic exposure to the same company. But they produce very different tax outcomes — and most buyers do not realize this until they are staring at their K-1 after an exit event.
Cost basis: what you paid, and what the IRS recognizes
In a direct transfer, your cost basis in the shares is the purchase price you negotiated with the seller, plus any transaction fees that are capitalized into the acquisition cost. That basis is recorded at the share level. When the company eventually goes public or is acquired, your gain or loss is calculated against that per-share basis. Simple, clean, and directly traceable.
In an SPV, you do not own shares in the underlying company. You own membership interests in a limited liability company that owns the shares. Your cost basis is your capital contribution to the SPV — the amount you wired to acquire your membership interest. The SPV's own tax basis in the underlying shares is a separate calculation, set at the price the SPV paid to acquire them from the seller.
At exit, the SPV sells (or distributes) its shares, recognizes gain or loss at the SPV level, and allocates that gain or loss to members through Schedule K-1. Your personal gain is then calculated based on your outside basis — your capital contribution plus any income previously allocated to you through the SPV, minus any distributions you received. If the SPV charged a management fee that reduced your capital account, that affects your outside basis too.
Holding period: when does the clock actually start?
This is where the structural difference bites hardest. Long-term capital gains treatment in the United States requires a holding period of more than one year. The rate difference between short-term (ordinary income rates, up to 37%) and long-term (generally 0%, 15%, or 20%, plus the 3.8% net investment income tax for high earners) can be significant on a large position.
Direct transfer holding period
In a direct transfer, your holding period in the shares begins on the date the transfer closes and the shares are registered in your name (or in the name of your custodian or nominee). There is no tacking of the seller's prior holding period for secondary buyers of equity — you start fresh from the closing date. If the company IPOs eight months after you close, your gain will be taxed at short-term rates unless you hold the post-IPO shares through the one-year mark from your original acquisition date.
SPV holding period — two clocks, not one
When you invest in an SPV, you actually have two holding periods to track. The first is the SPV's holding period in the underlying shares — which begins when the SPV closed its purchase from the original seller. The second is your holding period in your SPV membership interests — which begins when you contributed capital and received your interests.
Why does this matter? If the SPV distributes shares in kind to members (rather than selling them and distributing cash), your holding period in those received shares may relate back to the SPV's acquisition date, depending on the mechanics of the distribution and how partnership tax rules apply to the specific transaction. This is a technically complex area, and the outcome depends on whether the distribution is treated as a liquidating distribution, a current distribution, or a taxable exchange — distinctions your tax advisor needs to review against the SPV's operating agreement.
If the SPV sells the shares outright before distributing proceeds, the SPV-level gain is allocated to members via K-1, and the character of that gain — short-term or long-term — is determined by how long the SPV held the shares, not by how long you held your membership interests. An SPV that bought shares two years ago and sells them today passes through long-term gain regardless of when you invested in the SPV.
QSBS and the SPV problem
Section 1202 of the Internal Revenue Code — commonly called the QSBS exclusion — allows eligible shareholders to exclude up to $10 million (or 10x their basis, whichever is greater) of gain from federal income tax on the sale of qualified small business stock held for more than five years. This is one of the most valuable tax provisions available to startup investors.
Secondary buyers in a direct transfer can potentially qualify for QSBS treatment if the underlying shares were originally issued as qualified small business stock, the company still meets the QSBS requirements at the time of the secondary purchase, and the buyer holds the shares for the required five-year period from the date of their own acquisition. This is already a high bar — most pre-IPO secondary buyers are not holding for five-plus years — but it is at least theoretically achievable.
In an SPV, the analysis is more complicated. SPVs structured as partnerships can pass QSBS treatment through to members under specific conditions, but the technical requirements are stringent and depend heavily on the SPV's size, structure, and the original issuance of the shares. Investors who believe QSBS exclusion may be available to them should verify the analysis with qualified tax counsel before choosing their acquisition structure — not after the fact.
The lock-up period and what it does to your timeline
Many secondary buyers assume that an IPO is the moment they can sell. In practice, most insiders and secondary holders face a lock-up period — typically 90 to 180 days after the IPO — during which they cannot sell shares. For buyers who acquired shares close to an IPO date, the lock-up period can push their first available sale date past the one-year holding period threshold, inadvertently converting a potential short-term gain into a long-term gain. That is a favorable outcome. But it also means your exit timing is not fully within your control, and you need to model both scenarios.
Practical checklist before you choose your structure
- Determine whether the issuer permits direct transfers or requires SPV-only participation — some companies' transfer restrictions make direct ownership impractical for secondary buyers.
- Model your expected hold period against both the one-year long-term capital gains threshold and the five-year QSBS threshold, and assess whether either is realistically achievable given your liquidity needs.
- If buying through an SPV, request the SPV's operating agreement and confirm the GP's cost basis in the underlying shares, the fee and carry structure, and the distribution mechanics at exit.
- Ask whether the SPV distributes shares in kind or sells and distributes cash — the answer has direct implications for your holding period calculation and your ability to control the timing of your own taxable event.
- Confirm K-1 delivery timelines with the SPV manager. Extended K-1 delays can push your tax filing and any related estimated tax payments, affecting your cash flow planning.
- Consult a tax advisor before the transaction closes, not after — structure elections and basis decisions made at closing are generally not reversible.
Neither structure is universally better. Direct transfers offer simplicity, cleaner basis tracking, and potential QSBS access. SPVs offer operational ease, lower minimum position sizes in some cases, and the ability to pool smaller secondary supply into a single investable unit. The right choice depends on the issuer, the available supply, your hold period intention, and your overall tax situation.
Limen Markets offers both direct transfers and templated SPV structures depending on the issuer and available supply. Each listing specifies the vehicle type before you submit an indication. For a deeper look at how SPV fees and carry affect your net returns independent of tax, see our guide to SPV fees and carry explained.