What actually happens when you miss day 45
The exchange fails. That is the whole answer, and it is worth sitting with because most investors do not believe it until it is happening to them.
Here is the mechanical version. Your qualified intermediary is holding the proceeds from your sale. If no replacement property is properly identified by day 45, the QI has nothing to buy and no reason to keep holding your money. The funds come back to you, the sale is treated as an ordinary taxable sale, and the deferral you structured the entire transaction around disappears.
Day 45 does not move because it landed on a Saturday. It does not move because your lender was slow, your broker was traveling, or the seller stopped returning calls. Unlike most tax deadlines, this one has no weekend or holiday extension built into it. The only thing that has ever pushed it is federally declared disaster relief, and that is not a plan.
The identification itself is stricter than people expect
A surprising number of failed exchanges are not failures to find a property. They are failures to identify one correctly.
Identification has to be in writing, signed by you, and delivered to your qualified intermediary or another qualifying party before midnight on day 45. A text to your broker is not identification. A verbal agreement is not identification. An accepted offer is not identification. If it did not reach your QI in a signed document, the IRS position is that it did not happen.
You also have to identify under one of three rules. Most investors use the three-property rule, which lets you name up to three properties at any value. The 200% rule lets you name any number of properties as long as their combined fair market value does not exceed twice what you sold. The 95% rule lets you name unlimited properties at any value, but then requires you to close on 95% of that total, which is why almost nobody uses it on purpose.
One thing worth knowing: you can revoke and re-identify as many times as you want before the deadline, as long as each change is in writing and delivered the same way. Investors who understand this treat their day-45 list as a working document instead of a one-shot decision.
What I'm seeing with San Antonio investor sellers right now
What I am seeing right now is that investor sellers are becoming much more deliberate about timing. They are not simply asking, "What can I sell this property for?" They are asking what they can do with the equity afterward, whether that means moving into a stronger asset, reducing management responsibilities, repositioning into commercial real estate, or completing a 1031 exchange without being forced into a bad replacement property.
The biggest shift is that the sale and the replacement property have to be treated as one investment decision. A seller who waits until closing to start thinking about the replacement side has already surrendered a significant amount of strategic flexibility.
"A 1031 exchange isn't a tax strategy you execute after you sell. It's an investment strategy you have to plan before you sell."
There is also a version of this that most national 1031 content misses entirely. In a market with rising inventory and longer days on market, the 45-day window gets easier and the 180-day window gets harder at the same time.
Easier, because more available inventory means more candidates worth identifying. When inventory was tight, investors routinely burned through day 45 with nothing worth naming.
Harder, because everything downstream slows down. Sellers take longer to respond. Lenders are more cautious and want more documentation. Feasibility and title work stretch out. And your own relinquished property may sit longer than you budgeted, which quietly compresses the back half of the exchange before the clock even starts.
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What to do if day 45 is coming and you have nothing
You have fewer options than you would like, but you do have some.
Use all three slots, even if you only want one property. There is no penalty for identifying properties you do not buy. There is an enormous penalty for identifying too few.
Understand what a reverse exchange can and cannot do. In a reverse exchange you acquire the replacement property before selling the relinquished one, which sidesteps the identification problem entirely. But it has to be structured before you close, not after. It is a planning tool, not a rescue.
Know that Delaware Statutory Trusts exist as a backstop. A DST is a fractional interest in institutional real estate that can qualify as like-kind, and these have become a common landing place for exchange money under time pressure. Investors raised $985.1 million into DSTs in July 2026 alone, a monthly record, with roughly $5.5 billion raised year to date, up 31% over the same period in 2025, according to Mountain Dell Consulting. That volume tells you something real: a lot of exchanges are ending up in DSTs, and not all of those investors planned it that way.
DSTs are securities, not real estate listings, so that conversation belongs with a licensed securities professional and your CPA rather than with me. I mention them because you should know the option exists before day 40, not because it is where I want your equity to end up.
"The most expensive mistake in a 1031 exchange isn't necessarily paying taxes. Sometimes it's avoiding the tax bill so aggressively that you end up owning the wrong property."
Talk to your CPA about the tax year. If an exchange fails and the funds do not come back to you until the following calendar year, there are circumstances where the gain may be reportable in that later year rather than the year of sale. That is not a fix and it is not something to count on, but it is a conversation worth having quickly rather than in April.
Why this is a real estate decision before it's a tax decision
Here is the distinction I want investors to understand about who does what.
The rules belong to your qualified intermediary and your CPA. They are the ones who hold the funds, structure the exchange correctly, and tell you what the IRS will and will not accept. For that work in San Antonio I send people to Carl Pikus, VP and Account Executive with IPX1031.
"My role isn't to give tax advice. That's what the CPA and qualified intermediary are there for. My role is to make sure we're looking at the real estate decision early enough that the tax strategy doesn't force the investment decision."
That is the whole game. Tax deferral is valuable, but tax deferral by itself is not an investment thesis. The question is never just "what property should I buy." It is "what problem are we trying to solve with this equity," and that question has to get asked well before anyone starts a clock.
How to make sure it never gets here
Start identifying before you close, not after.
Nothing in the rules says you have to wait for the clock to start before touring properties, running numbers, or opening conversations with sellers. The investors who never have a day-45 problem are the ones who walked into their closing with a shortlist already built. By the time the clock started, they were confirming choices, not beginning a search.
"A successful exchange is not measured by how quickly you find a replacement property. It's measured by whether the replacement property still makes sense after the tax deadline is removed from the equation."
If a 1031 exchange is anywhere in your plans, talk to me before you list, not after you close.
Frequently asked questions
Can the 45-day deadline be extended? Only under federally declared disaster relief. There is no ordinary extension, and the deadline does not shift for weekends or holidays.
What if I identify a property and the seller backs out? You can close on any other property you properly identified. If you only named one, you are out of options, which is the entire argument for using all three slots.
Can I change my identified properties after day 45? No. You can revoke and re-identify freely up until the deadline, in writing, but the list locks at midnight on day 45.
Does the 45-day period start at closing or at contract? At closing of your relinquished property. The 45-day and 180-day clocks both start the day the sale closes and run concurrently.
Can I identify a property I haven't gotten under contract yet? Yes. Identification does not require a contract, an accepted offer, or earnest money. It requires an unambiguous written description delivered to your qualified intermediary.
Is 180 days always the outside deadline? Not always. The deadline is 180 days or the due date of your tax return for that year including extensions, whichever comes first. Exchanges that start late in the calendar year get shortened unless you file an extension. Ask your CPA before you close.
Can I 1031 out of San Antonio into property in another state? Yes. Section 1031 is federal, and like-kind real property anywhere in the United States qualifies.
Can I exchange a rental house into a commercial property? Yes. Like-kind is defined broadly for real property. A single-family rental can be exchanged into retail, industrial, office, land, or multifamily, which is one of the more useful and least understood features of the code.
Schedule a 1031 strategy call with JJ: https://calendly.com/treygroupcommercial/30min
JJ Gorena helps investors across San Antonio, Boerne, New Braunfels, and the Texas Hill Country structure 1031 exchanges the right way.
Nothing in this article is tax or legal advice. Every exchange is different, so talk with your CPA and a qualified intermediary before you make a move.
JJ Gorena II Trey Group Commercial | eXp Realty commercial@thetreygroup.com
