A simultaneous exchange closes the sale and the purchase on the same day. It was the original form of the 1031 exchange, but it is rare now because the delayed structure is more flexible and easier to coordinate. Simultaneous deals still turn up in pre-arranged and certain commercial transactions, though the delayed structure is what most exchanges use today.
Before 1979, a 1031 exchange came in one shape. You sold your property and bought the replacement on the same day, both deeds transferring at once, the whole deal closing as a single event. To pull it off, you had to find a counterparty who wanted your property as much as you wanted theirs and was ready to close on the very same day.
That is a simultaneous exchange. It is the simplest version on paper and the hardest to arrange in practice, which is why it is now the exception rather than the rule.
Why it is rare
The turning point was the landmark Starker v. United States decision. It established that Section 1031 does not require a same-day closing, which opened the door to the delayed exchange.
Delayed exchanges dominate today because they remove the need for perfect timing. You sell on your own schedule, then have 45 days to identify a replacement and 180 days to close on it. The other party never has to know, or care, that you are running an exchange.
Where simultaneous exchanges still appear
- Pre-arranged commercial transactions. Two sophisticated parties agree in advance to coordinate closings on the same day, often through the same title company.
- Related-party swaps. Family members trading properties can coordinate a simultaneous closing. The related-party rules still apply, including the two-year hold requirement.
- Development deals. A developer trades a parcel to a government agency or institution that needs immediate possession.
How it differs from a delayed exchange
In a delayed exchange, a qualified intermediary is the neutral party that holds your sale proceeds between the two closings. In a simultaneous exchange nothing sits in between, so a QI is not structurally required. Most professionals bring one in anyway, for the documentation. If the IRS later questions the exchange, a paper trail from a QI is stronger than none.
Every other 1031 rule still applies: the property must be like-kind and held for investment or business use, the same taxpayer must be on both sides, the boot rules govern any cash or non-like-kind value you take out, and the exchange gets reported on Form 8824.
Legal, but rarely the practical choice
Simultaneous exchanges are legal and straightforward, but impractical in most situations. The delayed structure offers the same tax benefit with far more flexibility. Unless you have a specific reason to coordinate a same-day closing, the delayed exchange is the standard approach.
For help determining which exchange structure fits your situation, connect with a qualified professional.
Simultaneous exchanges are still possible, but they demand tight coordination. The delayed structure has become standard because it is more flexible and relies on a qualified intermediary to hold the proceeds and document the deal.
Frequently asked questions
What's the difference between simultaneous and delayed exchanges?
A simultaneous exchange closes the sale and the purchase on the same day. A delayed exchange lets you sell first, then take up to 45 days to identify a replacement and 180 days to close on it. Delayed is the standard today.
Why did simultaneous exchanges become less common?
The delayed structure is more flexible and easier to coordinate, and it does not require the buyer and seller to be ready to close at the exact same moment.
Can you still do a simultaneous exchange today?
Yes, but it takes careful coordination. You need a buyer ready to close and a replacement property lined up to close the same day, and that timing rarely lines up on its own.
Do I need a qualified intermediary for a simultaneous exchange?
Not structurally, since no one holds proceeds between the closings, and a direct deed swap is possible. Even so, most professionals bring in a qualified intermediary for the documentation and protection.
What's the "Starker exchange" and why does it matter?
Starker v. United States was a 1979 court decision that established delayed exchanges are legal under Section 1031. Before it, a same-day swap was the only recognized form.