Understanding the 45-Day Identification Period

IRS regulations require that every taxpayer participating in a Section 1031 exchange formally identify the replacement property or properties they intend to acquire. This written identification must be completed no later than 45 calendar days after the closing of the relinquished property. This deadline is established by the Internal Revenue Service and cannot be extended except under very limited circumstances authorized by the IRS.

To satisfy the identification requirement, your notice should meet the following criteria:

Be prepared in writing.
Include the date the identification is made.
Clearly describe each replacement property, typically by its street address or another description that unmistakably identifies the property.
Be signed by the exchanger (or an authorized representative, when permitted).
Be delivered to your Qualified Intermediary (QI) or another party involved in the exchange who is authorized to receive the identification, such as the closing agent or escrow officer. The identification should not be delivered to a disqualified person, such as your attorney, accountant, or real estate agent if they are acting as your agent for IRS purposes.

During the 45-day identification period, you may revise your list of replacement properties as often as necessary. You are free to add newly identified properties, remove properties that no longer meet your investment objectives, or replace previously identified properties with more suitable options. Once the 45-day identification deadline has passed, your identification becomes final and cannot be changed. To preserve the tax-deferred status of your Section 1031 exchange, you must ultimately acquire one or more of the replacement properties that were properly identified within the initial 45-day period. Properties identified after the deadline are not eligible to complete the exchange. Failure to properly identify replacement property within the 45-day identification period may result in the exchange becoming ineligible for tax-deferred treatment.

Important Note #1

Replacement properties identified during the 45-day identification period do not need to be under a purchase agreement. You are not required to have submitted an offer, have an accepted contract, or even be actively negotiating the purchase. In addition, the property does not have to be publicly listed for sale to qualify as a valid identification under IRS guidelines.

Important Note #2

For purposes of calculating the exchange deadlines, the closing date of your relinquished property is considered Day 0. The following calendar day is Day 1, and all calendar days—including weekends and legal holidays—are counted when determining the 45-day identification period and the 180-day exchange period.

Understanding the 180-Day Exchange Period

The second critical deadline in a Section 1031 exchange is the 180-day exchange period. Beginning on the closing date of your relinquished property, you have 180 calendar days to complete the acquisition of your replacement property or properties. In some cases, this deadline may be shortened if your federal income tax return is due before the 180-day period expires, unless an extension is filed.

To successfully complete your exchange, you must:

Identify your replacement property(ies) within the required 45-day identification period.
Complete the purchase of all replacement property identified for acquisition before the 180-day deadline.
Authorize your Qualified Intermediary (QI) to apply the exchange proceeds toward the purchase of your replacement property(ies).
Receive legal ownership (title) to the replacement property and assume the rights and responsibilities associated with ownership.

If your exchange involves the purchase of more than one replacement property, each acquisition must be completed within the applicable exchange period. The 180-day countdown begins on the date your relinquished property closes and continues without interruption.

Planning ahead and maintaining close communication with your Qualified Intermediary, lender, and closing professionals can help ensure all required deadlines are met.

Important Note #1

You are not required to wait until the 45-day identification period has ended before purchasing a replacement property. If you acquire a replacement property before the identification deadline, that property is considered one of the properties identified for your exchange and counts toward the applicable IRS identification rules.

Important Note #2

For purposes of calculating the exchange timeline, the closing date of your relinquished property is considered Day 0. The following calendar day is Day 1, and every calendar day—including weekends and legal holidays—is included when calculating both the 45-day identification period and the 180-day exchange period.

1031 Exchange Tool

1031 Exchange Deadline Calculator

Enter the closing date of your relinquished property to estimate your 45-day identification and 180-day exchange deadlines.

1 Enter the closing date of your relinquished property

Select the date the relinquished property closes.

Your 1031 exchange deadlines will appear here.

This calculator is provided for general informational purposes only and is not legal, tax, or accounting advice. The 180-day exchange period may be shortened by the due date of the taxpayer’s federal income tax return, including extensions, and deadlines may also be affected by applicable IRS relief. Consult your tax or legal advisor regarding your specific exchange.