Exchanging property with a related party, a sibling, parent, child, or an entity the taxpayer controls, is allowed under Section 1031, but it comes with a separate set of restrictions under Section 1031(f) designed to prevent families and closely held entities from using an exchange to shift basis around without any real change in economic ownership. A New York City taxpayer exchanging a Brooklyn multifamily building with a family member's entity needs to understand these rules before assuming the transaction works the same way an arm's-length exchange would.
Who Counts as a Related Party
The related-party definition under Section 1031(f) generally follows the family and entity attribution rules used elsewhere in the tax code: siblings, spouses, ancestors, and lineal descendants are related parties, as are corporations, partnerships, and trusts in which the taxpayer holds a significant ownership interest, typically more than 50%. A New York City taxpayer exchanging with an LLC they jointly own with a business partner who is not a family member is not automatically caught by these rules, but the specific ownership percentages and entity structure need to be checked, since attribution rules can reach further than expected.
The Two-Year Holding Requirement
When an exchange occurs between related parties, both the taxpayer and the related party generally have to hold their respective properties, the one received by the taxpayer and the one received by the related party, for at least two years after the exchange. If either party disposes of their property before that two-year period ends, the original exchange is retroactively disqualified, and the deferred gain becomes taxable as of the date of the original exchange, not the date of the early disposition.
This creates real exposure for a New York City family transaction where, for example, a parent exchanges an appreciated Queens property with an adult child's entity and the child sells within the two-year window for reasons entirely unrelated to the original exchange, such as an unexpected need for liquidity. The retroactive disqualification applies regardless of the reason for the early sale.
The Cash-Out Structure the Rules Are Designed to Block
Section 1031(f) exists mainly to prevent a specific maneuver: a taxpayer exchanges low-basis property with a related party for high-basis property, then the related party sells the low-basis property shortly after, effectively converting what would have been the taxpayer's own taxable sale into a transaction where the related party absorbs the tax exposure at a more favorable basis. The two-year holding rule closes this loophole by unwinding the deferral if either side disposes too soon, which is why a related-party exchange only makes sense when both sides genuinely intend to hold long term.
Exceptions and Where the Rules Get Complicated
A small number of exceptions apply, including dispositions caused by the death of either party, an involuntary conversion, or a transaction where neither party's original exchange had a significant tax avoidance purpose, and the IRS has discretion to waive the two-year rule in cases without such purpose. Relying on an exception should not be the plan going in; the safer approach for a New York City family exchange is structuring the transaction assuming the full two-year hold applies and confirming any exception with a tax advisor only if an unplanned early disposition later becomes necessary.
Structuring a Related-Party Exchange to Hold Up
The related-party rules do not prevent a legitimate family transaction, such as a parent and adult child each independently wanting to hold different New York City properties long term for their own investment reasons. What matters is documenting that independent intent from the start: separate financing on each side, separate management of each property after the exchange, and no side agreement or understanding that either party will sell within the two-year window. A family exchange built around genuine, separate long-term holding plans, with that intent reflected in how each property is actually financed and operated afterward, is far more defensible than one where the paperwork looks arm's-length but the underlying arrangement does not.
Common 1031 Exchange Questions
Does exchanging property with a family member automatically disqualify a 1031 exchange?
No. Related-party exchanges are allowed, but they come with additional restrictions under Section 1031(f), most significantly a requirement that both parties hold their respective properties for at least two years after the exchange.
What happens if a related party sells their property before the two-year holding period ends?
The original exchange is generally disqualified retroactively, and the deferred gain becomes taxable as of the date of the original exchange, even if the early sale happened for reasons unrelated to the exchange itself.
Are there exceptions to the two-year holding requirement?
A limited number exist, including death of either party, an involuntary conversion, and transactions the IRS determines lacked a tax avoidance purpose, but these are exceptions granted case by case rather than a planning assumption to rely on upfront.
Does the related-party rule apply to an entity a taxpayer partly owns?
It can, depending on the ownership percentage and attribution rules. An entity in which the taxpayer holds a significant ownership interest, generally more than 50%, is typically treated as a related party under Section 1031(f).
Can a New York City taxpayer exchange directly with their own LLC?
Generally not in a way that satisfies the exchange requirements, since a taxpayer and an entity they wholly control are not treated as separate parties capable of a genuine exchange, apart from the related-party timing issue.
