DEADLINES & IDENTIFICATION

180-day exchange period

Also called: 180 day rule · exchange period · day 180

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PLAIN-ENGLISH DEFINITION

The federal outer timing window for receiving replacement property in a deferred exchange, subject to the tax-return due-date rule.

What it means in practice.

Replacement property generally must be received by the earlier of the 180th day after transfer of the relinquished property or the due date of the taxpayer’s return for that year, including extensions.

Why it matters.

The “180 days” phrase can be misleading if a return due date arrives first.

Additional notes.

Replacement property generally must be received by the earlier of the 180th day after transfer of the relinquished property or the due date of the taxpayer’s return for that year, including extensions.

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