180-Day Exchange Period — Baker 1031 glossary
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180-Day Exchange Period

The 180-day exchange period is the second hard deadline in a deferred 1031 exchange. The investor must acquire and close on the replacement property…

By · Updated 2026-06-18

180-Day Exchange Period — a key term for accredited real estate investors. Definition below; see the cited authority and related terms to go deeper.

Definition


The 180-day exchange period is the second hard deadline in a deferred 1031 exchange. The investor must acquire and close on the replacement property within 180 calendar days of selling the relinquished property, and this window runs concurrently with, not in addition to, the 45-day identification period. In other words, the 45 days to identify are part of the same 180 days, leaving roughly 135 days after identification to close. Like the 45-day rule, the 180-day rule allows no extensions for weekends or holidays. There is one important wrinkle: the exchange period actually ends on the earlier of 180 days or the due date (including extensions) of the investor's federal income tax return for the year the relinquished property was sold. An investor who sells late in the year must therefore file a tax-return extension to preserve the full 180 days; otherwise the deadline could be cut short. Failing to close within the period causes the exchange to fail and the gain to become taxable. The tight, fixed timeline is a primary reason investors turn to Delaware Statutory Trusts, which can typically be closed in days rather than the weeks a direct purchase requires.

Source: Treas. Reg. §1.1031(k)-1(b) (Cornell LII)


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Disclosures

This glossary entry is educational and is not investment, tax, or legal advice, or an offer to sell or a solicitation to buy any security. Definitions are general and current as of 2026-06-18; tax rules and regulatory standards change and depend on individual circumstances — verify with your CPA and attorney. For accredited investors only. Securities offered through Aurora Securities, Inc., member FINRA/SIPC; Baker 1031 Investments, LLC is independent of Aurora.