A reverse exchange solves an obvious problem: you found the replacement property before your own sale closed, and you cannot wait.
The mechanics are less obvious, and they raise a question owners ask as soon as they think about it. Section 1031 requires that the same taxpayer sell and then buy. If you buy first, you have acquired the replacement before relinquishing anything, which is the wrong order.
The answer is that you do not buy it. Somebody else does, temporarily, on your behalf.
The parking arrangement
The IRS blessed this structure in Revenue Procedure 2000-37, which created a safe harbor for what practitioners call parking arrangements.
An Exchange Accommodation Titleholder, the EAT, acquires and holds title to a property while your exchange is arranged. The EAT is not simply a person; the property is typically held in a separate special purpose entity, usually a single-member LLC formed for that transaction alone. That isolation matters: it keeps the parked property away from the accommodator's other business and other clients.
The safe harbor is flexible about which side gets parked. The EAT can hold the replacement property while you work to sell yours, which is the common case, or in some structures hold the relinquished property instead.
The clocks, which are unforgiving
Parking buys you sequencing, not time. The deadlines are strict, run in calendar days, and do not extend for weekends, holidays, or a slow market.
| Requirement | Deadline |
|---|---|
| Qualified Exchange Accommodation Agreement (QEAA) signed | Within 5 business days of the EAT acquiring the property |
| Identify the property you will relinquish | Within 45 days of the EAT's acquisition |
| EAT transfers the parked property to you, exchange complete | Within 180 days of the parking date |
That first row surprises people. The QEAA is the document establishing the arrangement, and the safe harbor requires it be executed within five business days of the EAT taking title. It is not paperwork to tidy up later; it is a condition of the structure.
The 180 days is the outer wall. If your relinquished property has not sold and the parked property has not been transferred to you by day 180 of parking, the safe harbor arrangement has run out. The relationship between that clock and your ordinary 180-day closing window is one of the things that makes reverse exchanges genuinely harder to run than a standard forward exchange.
What this costs, and why it is not for everyone
Parking is real ownership by a third party for up to six months, and that has consequences you are paying for:
- A special purpose entity has to be formed and administered for the transaction.
- Someone has to fund the purchase. The EAT does not have your sale proceeds yet, because you have not sold. Financing the parked property, whether through a lender comfortable with the structure or your own cash, is often the practical constraint that decides whether a reverse exchange is possible at all.
- The property must be operated during the parking period, with the arrangements documented.
- Fees are materially higher than a forward exchange, as we noted in what an exchange costs.
None of that makes it a bad tool. It makes it a deliberate one. A reverse exchange is what you use when the replacement property is genuinely worth securing now and you are confident your own sale will close inside the window.
Before you commit
Talk to your intermediary about whether they run parking arrangements in-house and how the EAT entity is structured. Talk to your lender early, because financing a property held by an accommodation entity is not something every lender will do quickly. And be honest about the sale side: the entire structure rests on your relinquished property actually selling inside 180 days, and a reverse exchange with a stalled sale is an expensive position to be in.
The safe harbor is a well-worn path and thousands of these are done, but it is unusually document-driven and unusually time-sensitive. This is a description of how the structure works rather than advice about your transaction; your CPA and attorney confirm whether it fits. Determining early whether a reverse is the right answer, or whether a conventional exchange with a strong identification list would serve better, is part of our exchange process.
Questions we field about reverse exchange parking
Who actually owns the property during a reverse exchange?
An exchange accommodation titleholder, typically through a single-member LLC formed for the transaction, holds title until the exchange is completed and the property is transferred to you.
What is a QEAA?
The qualified exchange accommodation agreement, the document establishing the parking arrangement. Under the safe harbor it must be signed within five business days of the EAT acquiring the property.
How long can a property stay parked?
Up to 180 calendar days. By day 180 the EAT must transfer the parked property to complete the exchange. There are no extensions for weekends, holidays, or market conditions.
Do I still have a 45-day identification requirement?
Yes. When the replacement is parked, you generally must identify the property you will relinquish within 45 days of the EAT's acquisition.
Why are reverse exchanges more expensive?
An entity must be formed and administered, the purchase has to be funded before your sale closes, and the property must be operated during parking. All of that costs more than a standard forward exchange.