IRC §704(c) for Investment Clubs: The Built-In Gain Problem

What is built-in gain?

When a member contributes appreciated stock to an investment club, there's a difference between what they paid for it (their adjusted basis) and what it's worth at the time of contribution (its fair market value). That difference is the built-in gain.

Why this matters: the §704(c) rule

Without §704(c), when the club eventually sells those Apple shares, the $6,000 gain that existed before Member A contributed would be shared equally among all members. That would let Member A shift some of their pre-contribution gain to other members — effectively a tax benefit at others' expense.

§704(c) prevents this. It requires that built-in gain be allocated back to the contributing member when the property is eventually sold. The other members only share in the gain that accrues after the contribution date.

A concrete example

Member A contributes 100 shares of Apple (FMV $18,000, basis $12,000) to a 4-person club, each with 25% ownership.

One year later, the club sells the shares at $22,000.

Without §704(c), each member would have been allocated $2,500 and Member A would have shifted $4,500 of their pre-contribution gain to others.

The Traditional Method

There are several approaches to allocating §704(c) gain. The most common for investment clubs is the Traditional Method (Treas. Reg. §1.704-3(b)).

Under the Traditional Method, the built-in gain stays with the contributing member exactly as described above. The partnership tracks the built-in gain for each contributed lot separately and applies it when that specific lot is sold.

If the shares fall in value after contribution — below the contributing member's basis — there's a "ceiling rule" that limits how much loss the other members can be allocated. The mechanics here get complex and are why most club software doesn't handle it.

What most clubs actually do (and why it's wrong)

Most investment clubs treat all contributions as equivalent to a cash contribution and split all gains equally. If no member ever contributes appreciated stock, this is fine. But once it happens, the equal-split approach:

1. Allocates pre-contribution gain to members who didn't earn it
2. Reduces the contributing member's taxable gain below what it should be
3. Creates incorrect K-1 figures for every member involved

This is a real IRS audit risk for clubs that accept in-kind contributions. The IRS's partnership audit unit knows this is a common error.

Does your club need to worry about this?

If your club only accepts cash contributions, §704(c) doesn't apply and you can stop reading.

If your club ever lets members contribute stock instead of cash — even once — you need to track §704(c) for that contribution from the date it was made until the lot is fully sold. The tracking obligation doesn't disappear just because the lot has been partially sold or the member has left.