Can You Get an Extension on a 1031 Exchange?

You can extend a 1031 exchange in only three situations: by filing a tax return extension to preserve the full 180-day exchange period, by qualifying for relief under a presidentially declared disaster, or by serving in a designated combat zone. The IRS does not grant a 1031 exchange extension for financing delays, personal hardship, or a slow market. The 45-day identification window and the 180-day exchange window are statutory, and outside those three routes they run on calendar days no matter what.¹

The Two Deadlines You Are Trying to Extend

The clock starts the day you transfer the relinquished property to the buyer. From that date you have 45 calendar days to identify replacement properties in writing, and 180 calendar days to actually receive the replacement property. Weekends and holidays count. The two windows run at the same time, so the 45-day identification period sits inside the 180-day exchange period.²

There is a wrinkle in the 180-day rule that trips up a lot of investors. The exchange period ends on the earlier of day 180 or the due date of your tax return (including extensions) for the year you sold.¹ That parenthetical is where the most useful extension in the entire 1031 world lives.

Filing a Tax Return Extension to Preserve the Full 180 Days

If you close on your relinquished property late in the year, your tax return due date will arrive before day 180. Say you close in November 2025. Day 180 lands somewhere in May 2026, but your 2025 federal return is due April 15, 2026. Without action, your exchange window is cut short by roughly a month.

The fix is Form 4868. Filing it before April 15 gives you an automatic six-month extension of your return, pushing the due date to October 15.³ Because the statute reads “due date including extensions,” that later October date becomes the comparison against day 180, and you get the full 180-day window Congress meant you to have.

For any exchange that starts after roughly mid-October of the prior year, filing Form 4868 is effectively required to keep the exchange period intact. Forgetting this single step is one of the most common and most avoidable ways an exchange fails.

Federally Declared Disaster Extensions

When the President declares a federal disaster, the IRS can postpone 1031 deadlines for affected taxpayers under Section 7508A. Revenue Procedure 2018-58 sets the mechanics: both the 45-day identification period and the 180-day exchange period are extended by 120 days, or to the end of the general disaster relief period the IRS announces, whichever gives the taxpayer more time.⁴ The exchange has to have already been underway when the disaster hit. You cannot start a new exchange and claim relief retroactively.

The definition of “affected taxpayer” is broader than most people assume. You qualify if any of the following applies:⁵

Your principal residence or business is in the covered disaster area.
Your tax records needed to complete the exchange are located in the disaster area.
The replacement property itself is in the disaster area.
You are a relief worker from a recognized government or philanthropic organization assisting in the area.
You were visiting the area and were injured or killed in the disaster.
Your spouse qualifies under any of the above and you file jointly.

The IRS publishes specific disaster relief notices, such as IR-2024-266 for Hurricanes Milton and Helene, that name the covered counties and set the new deadlines. Relief applies automatically once the notice issues; you do not apply for it. You do need to monitor IRS announcements to confirm your area is covered and to know the exact adjusted dates, because each notice sets its own terms.

If you claim disaster relief, tell your qualified intermediary in writing as soon as you know the extended deadline. The intermediary needs the updated dates so it does not release your exchange funds early, which would trigger constructive receipt and collapse the deferral.

Combat Zone Extensions

Members of the Armed Forces serving in a designated combat zone or contingency operation get their 1031 deadlines suspended entirely. The 45-day and 180-day clocks stop running for the duration of the deployment, plus any period of continuous hospitalization from injuries received during service, plus an additional 180 days after that.⁶

The protection reaches beyond active-duty military. Civilians serving in support of the Armed Forces in a combat zone qualify, and so do spouses of anyone entitled to the suspension for purposes of joint filing obligations.⁶ Keep deployment orders or equivalent documentation to substantiate the tolling period if the IRS questions the timeline later.

What Does Not Qualify for an Extension

Outside the tax return extension mechanic, the disaster route, and combat zone service, there is no relief. Financing that falls through, a seller who backs out, a buyer who delays closing, tough market conditions, health issues, and simple oversight are all on you. Missing either the 45-day or 180-day deadline by a single day disqualifies the entire exchange.¹

What a Missed Deadline Costs

If you blow a deadline and the exchange collapses, the IRS treats the original sale as a fully taxable event. The tax comes in layers, not just capital gains.

The federal long-term capital gains rate is 0%, 15%, or 20% depending on your taxable income, and most real estate investors land in the 15% or 20% bracket.⁷ On top of that, if your modified adjusted gross income exceeds $200,000 single or $250,000 married filing jointly, you owe an additional 3.8% Net Investment Income Tax on the gain.⁸

Then the depreciation recapture. If you have been claiming depreciation deductions over the years, the IRS taxes the recaptured depreciation at up to 25%. On a property held for a decade or more, that alone can be a six-figure hit. Together, a failed exchange on a property with meaningful appreciation and depreciation history can push the effective federal rate above 30%.

On top of the tax, underreporting the gain or improperly claiming deferral can trigger an accuracy-related penalty of 20% of the underpayment.⁹ If you owe and pay late, a separate failure-to-pay penalty of 0.5% per month, capped at 25%, accrues on the unpaid balance.¹⁰

Reporting an Extended Exchange

Every 1031 exchange gets reported on Form 8824, attached to your federal return for the tax year in which you transferred the relinquished property, even if you receive the replacement property the following year.¹¹¹²

Line 6 asks for the date by which the replacement property had to be received. If a disaster extension applied, that is where the adjusted deadline goes. Write the IRS disaster relief notice number, such as “FL-2024-10,” in the top margin of the form so the IRS understands why your dates run past the standard windows. Keep copies of the original closing statement, the written identification letter, and any applicable disaster relief notice or deployment orders in your files.

1
Internal Revenue Service. Like-Kind Exchanges Under IRC Section 1031
2
eCFR. 26 CFR 1.1031(k)-1 – Treatment of Deferred Exchanges
3
Internal Revenue Service. Form 4868, Application for Automatic Extension of Time to File U.S. Individual Income Tax Return
4
Internal Revenue Service. Revenue Procedure 2018-58
5
eCFR. 26 CFR 301.7508A-1 – Postponement of Certain Tax-Related Deadlines by Reasons of a Federally Declared Disaster
6
Office of the Law Revision Counsel. 26 USC 7508 – Time for Performing Certain Acts Postponed by Reason of Service in Combat Zone or Contingency Operation
7
Internal Revenue Service. Topic No. 409, Capital Gains and Losses
8
Internal Revenue Service. Topic No. 559, Net Investment Income Tax
9
Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty
10
Office of the Law Revision Counsel. 26 USC 6651 – Failure to File Tax Return or to Pay Tax
11
Internal Revenue Service. About Form 8824, Like-Kind Exchanges
12
Internal Revenue Service. Instructions for Form 8824 (2025)