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Home » 45/180 Day Time Requirements Calculator

45/180 Day Time Requirements Calculator

The time requirements in a tax deferred exchange are very specific. From closing on the sale of the relinquished (sale) property, an Exchanger must:

  • Properly identify potential replacement properties within 45 calendar days (the”Identification Period”)
  • and

  • Close on the replacement properties within 180 calendar days of the relinquished property sale – OR – the due date (including extensions) for the Exchanger’s tax return for the taxable year in which the reliquished property was tranferred, whichever is earlier (the “Exchange Period”)

Without taking into consideration an Exchanger’s potential tax filing date restriction and based upon the closing date submitted, the 45-day Identification Period and 180-day Exchange Period deadlines are shown below:

Enter the date the relinquished property (sale) was closed:




45-day Identification Period ends on midnight of:

180-day Exchange Period ends on: