The investor who saved that deal is the reason the 1031 failed. The check that closed the funding gap is the same check that put the entire deferred gain back on the table.
Here is the situation, with the identifying details scrubbed. An exchanger was mid-1031, clock running, and short on equity for the replacement property. The window to close was real and getting shorter. The gap was real. And sitting right there was a passive investor willing to write the check that would make the deal happen. On paper it looked like the problem solving itself.
The only complication was the terms. The investor wanted a preferred return, because a pref was the only structure he would accept for putting his money at risk in someone else's deal. That is an entirely reasonable thing for a passive investor to want. So the exchanger papered him into the tenancy in common and gave him his pref. The gap closed. The property closed inside the exchange window. Everyone moved on.
Everything Worked, Which Was the Problem
For three years, nothing looked wrong. The property performed. Rent came in on schedule. Distributions went out the way the paperwork said they would, the pref investor getting paid first and everyone else falling in behind him. If you had asked anyone involved whether the deal was structured correctly, they would have pointed at the closed exchange and the checks going out and said it was working exactly as designed.
It was working. That was precisely the problem. The thing that made the deal function day to day was the same thing that made it a partnership in the eyes of the IRS, and nobody in the room was looking at it through that lens.
Then came the exam, three years after the fact. An agent looked at the arrangement and saw what the structure actually did rather than what the deed said it was. One co-owner had the right to be paid ahead of the others. The economics followed an agreement, not the ownership percentages on the title. A sponsor was making the operating calls for the group. Put those facts together and you have the working definition of a partnership.
Why That Classification Ends the Exchange
Once the arrangement is a partnership, the exchange unravels from the inside. If the co-owners were really partners, then the exchanger never acquired real property as his replacement. He acquired an interest in a partnership. And since the 2017 tax law, Section 1031 defers gain only on real property. A partnership interest does not qualify, for the plain reason that it is not real property. The replacement asset the exchanger thought he had bought was the wrong kind of asset the entire time.
So the deferral he had been relying on for three years was never actually available. The exchange failed retroactively, back to the original closing.
The bill matched the size of that failure. The full deferred gain came due, appreciation and depreciation recapture both, on a return that had been filed three years earlier. Interest ran the whole time, compounding quietly from the original due date. Penalties landed on top. The exchanger accommodated one investor's reasonable request and, in doing so, converted a completed exchange into a fully taxable sale with three years of carrying cost attached.
The check that closed the funding gap is the same check that put the entire deferred gain back on the table.
Three Ways That Gap Could Have Closed
The hard part of this story is that the gap was solvable without ever putting the exchange at risk. There were at least three clean paths, and any one of them would have worked.
The first was debt. He could have leveraged the replacement property with additional financing and kept every co-owner's equity strictly pro rata. More debt on the building, same economic split among the owners, no tier sitting above anyone. The gap gets funded by the lender instead of by an investor who needs a preference.
The second was a true pro rata co-owner. The same investor could have come in on identical terms to everyone else, taking the same split on cash, income, loss, debt, and sale proceeds, with no priority position anywhere in the stack. He might not have accepted those terms, and that is a real constraint. But if he had, the TIC survives intact and so does the exchange.
The third was to take the boot. The exchanger could have simply paid tax on the shortfall, the portion of the exchange he could not cover with like-kind value, and kept the deferral on everything else. Partial deferral on a clean exchange beats full taxation on a broken one every time. A small, planned tax bill at closing would have protected the entire rest of the gain.
Notice what all three fixes have in common. Each one funds the gap without creating a priority position for any single co-owner. Debt puts the extra dollars on the property. A pro rata co-owner puts them in at the same level as everyone else. Taking the boot funds the gap out of the exchanger's own pocket and accepts a defined tax cost for it. The failed version did the one thing none of these do: it handed a single investor a right to be paid first, and that right is what the IRS reads as the signature of a partnership. The question was never whether the gap could be closed. It was whether it could be closed without building a preference into the deal.
The Reading That Mattered
Everyone in that room read the preferred return as a commercial term. It was the price of getting the deal done, a negotiating point, the kind of thing that shows up in deals constantly and rarely causes trouble. The IRS read the exact same term as a classification decision, because inside a tenancy in common that is what it is. The pref did not just change who got paid first. It changed what kind of asset the exchanger owned, and that changed whether his exchange was ever valid.
The lesson is not that preferred returns are dangerous. It is that inside a TIC exchange, the economics and the tax classification are the same decision, and the moment you treat them as separate is the moment the gap you closed reopens as a tax bill.
This is general education, not tax advice, and the facts here have been changed. Partnership classification, TIC structuring, and 1031 eligibility are fact-specific and depend on your deal documents and how the arrangement actually operates. Review any funding-gap structure with your CPA before you paper it, not after the exam letter arrives.