If your 1031 exchange fails, you're generally back to an ordinary taxable sale. The gain you meant to defer is recognized, and you pay tax on it as if you'd never started the exchange.
Section 1031 doesn't add a penalty on top of that tax. A gain you didn't plan to pay tax on can leave you short on estimated payments, though, so ask your CPA about the underpayment penalty as soon as the exchange looks shaky. There are also rules about when your money comes back and which year the gain lands in, and some of them work in your favor.
What "failed" means
Section 1031 sets two deadlines, both counted from the day your sale closes.
- Day 45. Replacement property has to be identified in a signed writing delivered to the person required to transfer the replacement property to you, such as the seller, or to another party to the exchange, such as your qualified intermediary (QI). The regulation treats close family members, and an agent, attorney, or accountant who's worked for you in the two years before your sale, as disqualified. A list sent only to a disqualified person doesn't count, unless that person is the one required to transfer the replacement property to you. Miss day 45 and nothing you buy later qualifies.
- Day 180, or your tax return due date including extensions if that's earlier. Replacement property has to be received by then. Our 1031 exchange timeline post covers how the two dates interact.
The third common way is quieter. You identify on time, but the deals fall through after day 45 and nothing left on your list can close. A financing denial, a bad inspection, or a seller who walks can do it.
An exchange can also fail if you receive or control the sale proceeds, if your QI defaults, or if you exchange with a related party and either of you sells the property within two years.
What happens to the money your QI holds
Your QI can't wire the money back the day things go wrong. To keep the exchange valid, Treasury Regulation 1.1031(k)-1(g)(6) requires the exchange agreement to bar you from receiving, borrowing against, or otherwise getting the benefit of the funds before the exchange period ends, with a few exceptions.
| Situation | When the money can be released |
|---|---|
| You identified nothing by day 45 | After day 45 |
| You identified property and received everything you were entitled to | After you receive it |
| A material and substantial contingency tied to the exchange happens after day 45, if it's written into the agreement and outside the control of you, your family, and your advisers | After that event |
| You identified property but couldn't buy it | Generally at the end of the exchange period, day 180 or the earlier return due date |
The last row is the hard one. If the deals died on day 60, your money generally stays with the QI until the exchange period ends. Your exchange agreement may add its own terms, so read it and ask your QI what applies.
How the gain is taxed, and in which year
Your gain is the amount realized minus your adjusted basis. For rental property, the part that reflects past depreciation, called unrecaptured section 1250 gain, is taxed at a maximum 25% rate. The rest is generally capital gain, long-term if you held the property more than a year. Depending on your income, the 3.8% net investment income tax can apply on top, plus any state tax.
The year matters. The Form 8824 instructions say that when an exchange fails its timing rules because of the QI, the gain may be taxable in the year you transferred the property. The regulation also has a timing rule for exchanges that use a QI. Under Treasury Regulation 1.1031(k)-1(j)(2), the QI is treated as not being your agent when deciding when you received payment under the installment-sale rules. It applies only if, when the exchange period began, it was reasonable to believe you'd complete the exchange, and only if you held the property you sold for business or investment.
So if your sale closed late in one year and the QI returned the money in the next, some of the gain may be reportable in the year you received the money. Two things limit that. Depreciation recapture taxed as ordinary income, such as recapture on parts of the property you cost-segregated, is recognized in the year of the sale under section 453(i). And the regulation's own examples all use property with no mortgage, so if a loan was paid off at your sale, your CPA works out how much of the gain can move. Your CPA confirms all of this before you file.
A partial exchange as the middle outcome
Failing doesn't have to be all or nothing. If you buy some replacement property but not enough to absorb all the value and debt from your sale, the shortfall is boot. You recognize gain up to the amount of boot, and the rest stays deferred. Our post on 1031 exchange boot has worked examples.
If you're exchanging into several rentals and one of three purchases dies, closing the other two can still defer part of the gain. How much depends on how big your gain is compared with the value you didn't replace. In the $690,000 example in our post on 1031 exchanges into multiple properties, losing one $230,000 rental leaves $130,000 unspent with the QI and $100,000 of debt not replaced. That's $230,000 of boot, so if your gain is $230,000 or less, all of it is taxed. Run your own numbers with your CPA.
If you're inside your 45 days and worried about your list, talk to a 1031 consultant about properties that can close in the time you have.
How to lower the odds of a failed exchange
Start before the sale closes. Engage your QI, shortlist replacement properties, and start financing conversations while the sale is in escrow. Every day of searching done before closing is a day back on the 45-day clock.
Identify backups. The 200% rule lets you name any number of properties as long as their combined fair market value at the end of day 45 is no more than 200% of what the property you sold was worth. A list with only first choices has nothing to fall back on.
Pick property that can close fast. At Lineage, listed properties have already been inspected, and our average time to close is about 22 days. That's a track record, not a promise on any one deal. Our post on fast closings explains where the time goes.
Leave a buffer. Aim to close well before day 180, and check whether your return due date comes first. For a late-year sale, filing an extension can preserve the full 180 days, so ask your CPA.
Lineage does not give tax or legal advice. This article explains the federal rules in general terms. Your CPA and qualified intermediary confirm how they apply to your situation.
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Frequently asked questions
Section 1031 doesn't add one. You owe the tax on an ordinary sale, and possibly an estimated-tax underpayment penalty if you didn't pay in enough during the year.
Not always. If you identified property you couldn't buy, the funds generally stay restricted until the exchange period ends.
Possibly, for part of it. If the sale closed in one year, the QI returned the money in the next, and it was reasonable at the start to believe you'd complete the exchange, the regulation can let you report some of the gain when you receive the money. Ordinary-income depreciation recapture still lands in the year of the sale. Your CPA confirms how it applies to you.
No. After day 45 you can only acquire property you already identified, which is why naming backups matters.