RELATED-PARTY 1031 EXCHANGE RULES

Section 1031(f) of the Internal Revenue Code places special restrictions on like-kind exchanges between related parties. A related party for this purpose generally includes family members such as siblings, spouses, ancestors, and lineal descendants, as well as entities in which the taxpayer holds more than fifty percent ownership, and other relationships defined by cross-reference to related-party rules found elsewhere in the tax code. Congress added these restrictions because exchanges between related parties created an opening for taxpayers to defer gain on paper while a related party effectively converted the property to cash shortly afterward, which is the kind of outcome Section 1031 was never intended to permit.

A related-party exchange is not prohibited outright. A Boston, MA investor can still complete a like-kind exchange with a sibling, an adult child, or a commonly controlled entity and defer gain in the ordinary way. What Section 1031(f) adds is a two-year holding requirement that applies after the exchange closes. If either party to the related-party exchange disposes of the property they received in the exchange within two years of the transfer date, the original deferral is retroactively disqualified, and both parties must report the gain that would otherwise have been recognized, generally in the year the disqualifying disposition occurred.

Exceptions to the two-year holding requirement

The two-year rule includes a handful of statutory exceptions. A disposition caused by the death of either party generally does not trigger the retroactive recognition. A disposition through an involuntary conversion, such as a property being taken by eminent domain or destroyed in a casualty event, is also generally excepted, provided the exchange or disposition that resulted in the involuntary conversion happened before the related party disposed of their exchanged property. There is also a broader exception where the taxpayer can establish, to the satisfaction of the Internal Revenue Service, that neither the original exchange nor the later disposition had tax avoidance as one of its principal purposes, although this exception is applied narrowly and is not something taxpayers should assume will apply without a well-documented, legitimate non-tax reason for the early disposition.

The cash-out pattern the IRS has challenged

Beyond straightforward related-party exchanges, the Internal Revenue Service has also successfully challenged a more layered pattern where a taxpayer uses a qualified intermediary to exchange into property acquired from a related party, effectively allowing the related party to cash out of their own property while the taxpayer obtains tax-deferred treatment on the transaction. Court decisions addressing this pattern have generally held that even though the taxpayer technically transacted with an unrelated qualified intermediary rather than directly with the related party, the substance of the transaction, a related party receiving cash while the taxpayer obtained deferral, falls within the purpose Section 1031(f) was designed to prevent. Because this area of the law depends heavily on the specific facts of a transaction and has been the subject of contested litigation, any exchange involving a related party on either side of the transaction, whether directly or through an intermediary structure, warrants a careful review with a tax attorney or CPA before closing, rather than relying on a general understanding of how the two-year rule works. For investors in Boston, MA considering an exchange within a family-owned portfolio or a commonly controlled entity structure, documenting the business purpose behind the transaction at the time it happens, rather than reconstructing that rationale later if the exchange is questioned, is one of the most practical steps toward protecting the deferral.

The related-party rules do not apply only to exchanges between two individuals. They extend to transactions involving entities in which a taxpayer holds more than fifty percent ownership, which means an exchange between a taxpayer personally and a partnership, limited liability company, or S corporation the taxpayer controls is generally subject to the same two-year holding requirement as an exchange between two family members. This entity-level application matters for Boston, MA investors who hold real estate through family limited partnerships or commonly owned holding companies, since a transaction that looks like an arm's-length exchange with an outside entity on paper may still be treated as a related-party exchange once the ownership percentages are traced through to the individual owners. Attribution rules that treat a taxpayer as owning shares held by certain family members or related entities can pull a transaction into related-party status even when the two contracting parties do not appear related at first glance, which is another reason a careful ownership analysis, not just a review of who is named on the closing documents, should happen before a transaction is treated as unrelated for exchange purposes.

Because related-party exchanges sit at the intersection of family wealth planning and technical tax compliance, this explainer is meant as a starting point for a conversation with a tax attorney or CPA, not a substitute for one. A Boston, MA investor weighing an exchange with a sibling, a parent, or a commonly controlled family entity should expect that any such transaction, along with the two years following it, will be reviewed against the same tax avoidance standard the Internal Revenue Service applies in contested cases. Structuring the transaction with clear, contemporaneous documentation of the non-tax business reasons behind it from the outset is far more defensible than assembling that explanation only after a disqualifying disposition has already drawn scrutiny.