Simultaneous 1031 Exchange: Is It Still Done?

What Is a Simultaneous 1031 Exchange?

A simultaneous 1031 exchange is the simplest concept possible: you sell property and buy replacement property on the same day. Your deed goes out, the replacement property's deed comes in, and the transaction closes as one event (or very close to it).

This was actually the original form of 1031 exchange. Back before 1979, when you wanted to defer capital gains taxes, you found someone with a property they wanted to trade for yours, and you swapped deeds. Direct property-for-property exchange. No money held in escrow. No intermediary. Just two properties and two people agreeing to trade.

But here's the thing: simultaneous exchanges are incredibly rare today. And there's a very good reason why. The delayed exchange structure, where you sell first and then have 45 days to identify and 180 days to close, has become the standard for nearly all 1031 exchanges.

Let's talk about why, and when simultaneous exchanges still happen.

The History: Why Delayed Exchanges Won

The story starts with Starker v. United States, a landmark 1979 Supreme Court case. T.J. Starker had sold some property to a timber company. Instead of taking cash, he had an agreement that the company would purchase replacement property for him later. The IRS came after him saying this wasn't a valid exchange because the properties didn't swap on the same day.

Starker won. The court ruled that Section 1031 doesn't require the exchange to be simultaneous. The statute just says you have to exchange property for like-kind property. It doesn't say it has to happen on the same day.

This opened the door to the delayed exchange structure. And once that structure was available, it became obvious that delayed exchanges are better from almost every angle.

With simultaneous exchanges, you and your counterparty have to be perfectly synchronized. You both have to be ready to close on the same day. You both have to have found acceptable properties. You both have to have financing in place (if needed). You both have to agree on the terms simultaneously. If one side gets cold feet or runs into a problem, the whole thing falls apart.

With delayed exchanges, you're not dependent on anyone else's timeline. You sell on your schedule. Then you have 45 days to identify a replacement (no rush to pick something just because it's available today). Then you have another 135 days to close (plenty of time to arrange financing, do inspections, negotiate terms). The other party to your purchase doesn't even know or care that you're doing an exchange. From their perspective, you're just a buyer with a qualified intermediary holding your funds.

This flexibility is huge. And the delayed exchange became the standard.

Why Simultaneous Still Happens (Rarely)

That said, simultaneous exchanges do still occur. Here are the scenarios where you might see one:

Pre-arranged transactions. Sometimes an investor and a property owner work backward from a simultaneous close. The investor says, "I have this property to sell. If I can find a replacement, can we coordinate to close on the same day?" Both parties understand upfront that simultaneous closing is the goal. They coordinate diligently, and both deals close at the same time.

This usually happens in commercial real estate when both parties are sophisticated and expect coordination. A developer trading a parking lot for another site in the same city, for instance.

Related-party exchanges. If you're doing an exchange with your uncle or another family member, you might coordinate everything to happen simultaneously. Family circumstances might align. You both want to simplify things. You arrange one closing with two deeds going different directions.

But here's a critical caveat: related-party exchanges have extra IRS rules. If the properties are related (for example, you and your uncle are doing an exchange where one party buys the other's replacement), there are additional holding requirements. The IRS requires that both properties be held for at least two years after the exchange. This is on top of the normal 1031 rules. It's a way to stop abuses.

Certain commercial and development deals. In real estate development, a developer might need to exchange a parcel to a government agency or a large institution, and that institutional buyer might need the old parcel immediately. A simultaneous close might be arranged.

These are the exceptions, not the rule.

How a Simultaneous Exchange Works Structurally

Here's the basic flow if you were to execute a simultaneous exchange today:

Step 1: Arrange everything in advance. You'd identify your replacement property and line up a buyer who's ready to close. This is the big hurdle. You need both conditions met before you can proceed.

Step 2: Coordinate closing. Both purchase agreements and your sales agreement are set to close on the same day, ideally through the same title company so the funds can move simultaneously.

Step 3: Execute the exchange. At closing, the title company (or escrow agent) facilitates the exchange. Your deed goes to the buyer. The replacement property's deed comes to you. Funds are exchanged.

Step 4: Document it as an exchange. Even in a simultaneous exchange, you should document that it's a Section 1031 exchange for tax reporting purposes. A letter from your tax advisor or a 1031 exchange declaration helps establish the intent.

Technically, you could do a simultaneous exchange without a qualified intermediary. The IRS doesn't require a QI for simultaneous exchanges because no one person (the exchange party) ever has control of the proceeds. The properties just swap ownership.

But here's the thing: even in a simultaneous close, most professionals involve a QI anyway. Why? Documentation. If something goes wrong, you want proof that this was properly structured as an exchange. A QI involvement, even minimal, creates a paper trail that IRS agents will respect.

Why Advisors Recommend Delayed Structure Instead

Even when a simultaneous exchange is theoretically possible, most tax professionals and real estate advisors recommend the delayed structure instead. Here's why:

More protection. In a delayed exchange, you have time to inspect the replacement property thoroughly, get an appraisal, do a title search, arrange financing, and negotiate any adjustments. In a simultaneous exchange, all of that happens at once. There's less time to discover problems.

Flexibility. The 45-day identification period gives you time to think. The 135-day additional period (180 total from sale to close) gives you time to let deals fall through without panic. In a simultaneous exchange, if your identified property fails inspection, you're scrambling.

QI involvement. In a delayed exchange, the QI manages the funds and protects both parties. The IRS has a preference for this structure because it's documented and professional. In a simultaneous exchange, if you don't involve a QI, you risk having the IRS argue that you constructively received the funds (even though technically you didn't).

Easier to plan. You sell when you want to sell. You buy when and what you want to buy. No need to synchronize with another party's timeline. Most investors prefer this flexibility.

Common failure points in simultaneous exchanges. One side gets financing contingencies and the other doesn't. One side wants to do a final walk-through a week before closing and changes their mind. The title report reveals an easement the buyer didn't know about. A survey issue emerges. In a simultaneous close, these problems blow up the whole transaction. In a delayed exchange, you have time to resolve them.

The Legal and Tax Implications

From a legal perspective, a simultaneous exchange is straightforward. You're doing what the IRS always thought Section 1031 contemplated: directly exchanging property.

From a tax perspective, you need to document it clearly. Your 1031 exchange should be indicated on your tax return. Your basis in the replacement property should be properly calculated. If you received any boot (cash or other property), that needs to be reported.

One thing to be careful about: if you do a simultaneous exchange without a QI and without good documentation, the IRS might argue that you constructively received the proceeds, even though you didn't actually touch the money. This is a technical argument, but it's risky. Having a QI letter or other documentation that says "this was structured as a Section 1031 exchange" helps you defend against that claim.

Real Example: A Pre-Arranged Simultaneous Exchange

Let's paint a picture of what a coordinated simultaneous exchange might look like.

Sarah owns a 20-unit apartment building in Portland that she's owned for 12 years. She's ready to upgrade to a Class A property but wants to defer taxes.

She connects with a commercial real estate broker who knows of a developer who has a 40-unit property in a nearby suburb that just became available. The developer is willing to sell but prefers a quick close.

Sarah and the developer coordinate their closing dates. Sarah's building is under contract with a buyer who's ready to close in 30 days. The developer's 40-unit property is available for closing in 30 days. They plan to close on the same day.

On closing day: Sarah's deed (20 units in Portland) transfers to the buyer. The developer's deed (40 units in suburb) transfers to Sarah. Title holds Sarah's proceeds from her sale in escrow momentarily while the purchase funds move the opposite direction. Everything closes in a coordinated sequence.

Is Sarah's exchange protected? It could be stronger. She might ask for a QI to handle the closing anyway, just to have a neutral third party and clear documentation. But structurally, it works.

From a tax perspective, Sarah reports this as a Section 1031 exchange. She defers the entire gain on the 20 units because she reinvested in like-kind property (real estate).

The Takeaway: Delayed Is Safer and Standard

Simultaneous 1031 exchanges are legal and can work. But they require perfect coordination and both parties to be ready at the same moment. In the real world, this is rare.

The delayed exchange structure, where you sell first, then identify within 45 days, then close within 180 days, has become the standard for good reasons. It's more flexible. It's more protective. It's better documented. It works with the qualified intermediary system that the IRS actually prefers.

Unless you have a specific reason to coordinate a simultaneous close, the delayed structure is the way to go. It gives you the same tax deferral benefit without the coordination headache.

Want to understand the timeline better? See our complete guide to 1031 exchange timelines. Or if you're ready to start planning your exchange, connect with a qualified professional who can walk you through the process step by step.