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1031 exchange deadline calculator

Plan the standard 45-day identification window and the earlier of the 180-day limit or your tax-return deadline.

Start with the basics

Enter the date you transferred the property, then calculate your planning dates.

Advanced options: tax-return deadlineTax-return deadline unknown. Exchange deadline stays provisional.

For a standard delayed exchange. Use the earliest transfer in a multi-property exchange. Dates alone do not establish exchange eligibility.

Your result will appear here

Enter the basic information, then select “Calculate planning dates”. We will bring you here when it is ready.

Understand the result

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Calculating does not send your inputs to a lender or save them to an account. Keep a copy for your records.

Method and sources

The standard receipt deadline is the earlier of 180 days after transfer or the tax-return due date, including applicable extensions. No tax savings or deferred gain is calculated.

IRS Publication 544: deferred exchanges
IRS: Instructions for Form 8824

Sources checked October 1, 2026. Educational planning estimates; verify your transaction with appropriate professionals.