1031 Exchange Checklist for Q4 Closings and Tight Replacement Deadlines

Check what day 45 lands on before you sign the sale contract, not after

Reg. §1.1031(k)-1(b)(2)(i) ends the identification period "at midnight on the 45th day" after the transfer, and the text contains no weekend or holiday extension. The regulation's own example transfers property on November 16 and ends identification on December 31.

For 2026 the collisions are easy to miss. A November 10 closing puts day 45 on Christmas Day; November 17 puts it on New Year's Day; and the Federal Reserve holiday calendar also closes banks on October 12, November 11 and November 26. See whether weekends and holidays count.

The fix costs nothing: pick a closing date whose day 45 is a Tuesday or Wednesday, and if the date is already fixed, deliver the identification a full week early.

A lender delay, an appraisal backlog or a seller's default extends nothing

Section 1031(a)(3) is written in days from your transfer, with no provision for hardship, counterparty failure or market conditions. The only statutory postponement is disaster relief, and even that requires an IRS release covering your area and a transfer dated on or before the disaster.

So the planning question is never how to get more time; it is how much slack to build in before the clock starts. Advanced deadline traps covers extensions, disaster relief and the return-due-date cut-off in detail, and does a lender delay extend my deadline answers the narrow version.

One consequence sellers underestimate: the 45 days run inside the 180, so a slow start does not buy time at the end.

Work backwards: the latest safe dates for a November 10, 2026 closing

The binding constraint in Q4 is almost never day 180; it is having to commit to a replacement before diligence is finished. Build the calendar from day 45 backwards and the decision points appear.

These are hypothetical dates for one closing, and your intermediary should confirm the exact figures from your settlement statement.

• December 18 (day 38): identification signed and delivered, a week ahead of the December 25 deadline and clear of the holiday closures.
• December 11 (day 31): replacement diligence complete enough to commit; any property still waiting on a third-party report drops off the list.
• November 30 (day 20): lender's appraisal ordered and the commitment's expiry date confirmed in writing.
• November 24 (day 14): replacement under contract, with the due diligence period ending before day 38 rather than after it.
• May 7, 2027 (the Friday before day 180 on Sunday May 9): the last practical closing day, because Sunday is not a settlement date.
• April 15, 2027: file the extension. Day 180 falls after the return due date, so without Form 4868 or 7004 the exchange period ends early.

Eight questions to put to the lender before you go non-contingent

A lender who has never funded into an exchange is the most common reason a Q4 replacement misses. Ask these in the first call and get the answers by email.

If the answers are vague, price a contingency-free alternative into the identification list rather than hoping.

• What is your current appraisal turn time in this market, and when will it be ordered?
• On what date does your commitment expire, and what does an extension cost?
• How long is the rate lock, and what is the extension fee per fifteen days?
• Will you lend to the exact entity on title, given the same-taxpayer requirement?
• Do you require environmental, survey or property condition reports, and who orders them?
• What is your last funding date before the holidays, and which days are you closed?
• Will you fund on a day when the intermediary must also wire, and by what hour?
• What has caused your last three closings in this asset class to slip?

Contract terms that buy time, and the clause that can release your funds early

Two written provisions do more for a tight timeline than any amount of chasing. The first is ordinary contract drafting; the second is in the regulations and is widely unused.

Include exchange cooperation language in both contracts so neither counterparty can object to the assignment at the last moment; the cooperation clause has the detail.

• Pre-negotiated extensions on the replacement purchase, priced as a daily sum credited at closing, rather than a renegotiation under pressure.
• A due diligence period that ends before day 38, not on day 44, so the identification is made with information rather than hope.
• Seller cooperation on early ordering of title, survey and estoppels, with the work paid for up front to jump the queue.
• Reg. §1.1031(k)-1(g)(6)(iii)(B): your exchange agreement may let you receive funds early once a "material and substantial contingency" that relates to the exchange, is provided for in writing, and is beyond your control fails — for example a written financing or licence condition. Ask the intermediary to include it when the agreement is drafted; it cannot be added afterwards.

Keep one identification slot for a replacement that needs no lender

The three-property rule lets you name three properties of any value, and the 200% rule lets you name any number inside twice your sale price. Using every slot on financed buildings concentrates the risk you are trying to spread.

A Delaware Statutory Trust interest has no loan to underwrite on your side, no appraisal to schedule and no counterparty who can change their mind, so it can absorb the exchange if a building falls through after day 45. Using DSTs as backup properties covers how to name one without committing to it.

If the replacement still cannot close by day 180, the exchange does not have to fail entirely: closing part of it leaves the rest as boot rather than losing the whole deferral. What happens when an exchange fails and Plan B after a failed 1031 set out the options, and your CPA or attorney should confirm the reporting before you choose.