Day 45 to Day 180: A Closing Plan for the Replacement Without Losing the Exchange

After day 45 the list is fixed, so the closing plan is built only from what is already on it

Reg. section 1.1031(k)-1(b)(1) treats any replacement property as not like-kind if it was not identified before the identification period ended or not received before the exchange period ended. Revocation is allowed only "at any time before the end of the identification period" under paragraph (c)(6), so from day 46 you cannot swap a failed property for a new one.

That makes the identification list your entire universe. If you used the three-property rule, you have up to three chances. If you used the 200-percent rule, every property on the list counts toward the value cap, and a list that breaks both rules is saved only if you actually receive 95% of the value of everything identified under paragraph (c)(4)(ii).

If a property fell through before day 45, the fix was a revised list. After day 45 the only fix is another property already on it, which is why what to do when an identified property falls through starts with the backup.

Day 180 is a ceiling, and for sales after mid-October the real deadline can be April 15

Paragraph (b)(2)(ii) ends the exchange period at midnight on "the earlier of the 180th day thereafter or the due date (including extensions)" of your return for the year of the sale. The regulation's own example uses a November 16 transfer: the period ends on the March 15 return date unless the automatic extension is obtained, in which case it runs the full 180 days.

For an individual on a calendar year, any sale after about October 17 puts day 180 past April 15. Filing an extension before April 15 keeps the full window; filing the return first ends it. Extending your tax return to keep the 180 days covers the mechanics.

The only extension of the 45-day and 180-day dates themselves is in section 17 of Rev. Proc. 2018-58, which postpones deadlines by 120 days or the disaster relief period for taxpayers affected by a federally declared disaster, never beyond the return due date or one year. A slow lender, a seller who misses a date or a closing that lands on a weekend do not qualify.

Run the primary closing, the backup and the money as three tracks with dated milestones

Most failed exchanges after day 45 fail on a single dependency: a loan that does not fund, a title defect, an inspection that kills the deal in week 20. Running the tracks in parallel means a problem on one does not use up the time the backup needs.

Work backward from the earlier of day 180 or the return due date and put the following dates on one calendar shared with your agent, lender, closing attorney and qualified intermediary.

• Days 46 to 60: open escrow on the primary, order title, survey and the appraisal, and assign the purchase contract to the qualified intermediary with written notice to the seller, as paragraph (g)(4)(v) requires.
• Days 46 to 75: finish inspections and environmental work; renegotiate or walk while the backup still has time to close. The 60-day financing plan sets the lender milestones.
• Days 60 to 90: put the backup under contract or reserve it, even if you expect not to use it, and confirm what deposit is refundable.
• Days 90 to 150: target the primary closing here, not at the end, leaving a month for a second attempt.
• Days 150 to 175: close any remaining identified property, including a DST interest, and send the qualified intermediary written closing instructions at least several business days before each wire.

What you close on must be substantially the same property you identified

Paragraph (d)(1) requires that the property received be "substantially the same property as identified." The regulation's examples draw the line: buying 1.5 of 2 identified acres, worth 75% of the whole, still counts, while buying only the barn and its land out of a larger farm does not, because it differs in "basic nature or character."

That matters when a seller wants to carve out a parcel, a pad site or a unit late in the deal. A smaller piece of the same property can work; a different kind of asset carved out of it may not, and any equity you do not spend becomes cash at the end.

If you identified more than one property, paragraph (d)(1) applies the test to each one separately, so a partial purchase of one does not affect the others.

A DST on the list is the backup that can still close in the final weeks

A DST interest you identified by day 45 is a real backup because the trust already owns the property and has its financing in place. Rev. Rul. 2004-86 describes a trust whose trustee may not renegotiate the debt or the lease or accept new capital, which is why interests are offered on terms already fixed. Our traditional DST page notes that clients often close within 3 to 5 business days, and how quickly a DST can close covers the steps.

The DST must be named on the list like any other property, and an offering can sell out before you need it, so identifying two offerings, or a DST plus your primary property, gives the backup its own backup. If debt must be replaced, a cash out DST is a high-leverage, non-recourse structure that carries debt with a small part of the proceeds and pays no current distributions. DSTs are illiquid and carry real estate and leverage risk.

If nothing on the list closes, the qualified intermediary can release funds only as the exchange agreement allows under paragraph (g)(6), usually after the exchange period ends. Your options after a failed exchange explains the reporting.