A straightforward 1031 exchange gets more complicated the moment a family member, a business partner, or an entity you control shows up on the other side of the transaction. The tax code treats these related-party exchanges differently, with a longer look-back period and a narrower set of assumptions about what counts as a legitimate trade. Understanding where those lines sit is useful before you talk to your qualified intermediary and tax advisor about a specific deal.
Photo by Kindel Media on Pexels
Why the IRS treats related-party exchanges differently
The general purpose of a 1031 exchange is to defer tax on a genuine change in investment position, not to shuffle basis between properties that stay within the same family or ownership group. When both sides of a swap are related, the IRS has historically seen more room for manipulation. One party could take a low-basis property, sell it quickly to a related party who already has high-basis assets, and functionally cash out while deferring the entire gain.
Congress added specific related-party provisions to the exchange rules to close that gap. The rules do not prohibit related-party exchanges outright. They add a holding-period condition and reporting requirements that make it harder to use family or entity relationships as a shortcut around a genuine like-kind trade.
Who counts as a related party under the tax code
The definition matters more than most people expect. Related parties generally include family members such as siblings, spouses, ancestors, and descendants, along with corporations, partnerships, and other entities in which you hold a certain ownership percentage. The threshold for entity ownership is a specific percentage test, not a loose "you're involved somehow" standard.
This is a topic worth reviewing carefully with your tax advisor before you assume a transaction falls outside the related-party rules. Ownership through trusts, multiple LLCs, or family limited partnerships can pull a counterparty into related-party status even when the connection isn't obvious on the surface. A quick conversation before you sign a purchase agreement is far cheaper than untangling it after closing.
The two-year holding period requirement
When a 1031 exchange happens between related parties, both parties generally need to hold the property they received for at least two years after the exchange. If either party disposes of their replacement property inside that window, the original tax deferral can be disqualified retroactively, which means the gain becomes taxable in the year of the original exchange rather than the year of the early disposition.
This two-year clock is one of the most commonly misunderstood pieces of the related-party rules. It isn't measured from the closing of the first leg of your own exchange. It runs from the date each party actually receives their respective property, and it applies independently to both sides of the deal. A tax advisor who has actually structured related-party exchanges before is worth involving early, since the mechanics differ from a standard exchange timeline.
Exceptions that can shorten or waive the two-year rule
The two-year holding requirement isn't absolute. The code lists specific circumstances where an early disposition doesn't trigger disqualification, including the death of either party, an involuntary conversion such as a casualty loss or condemnation, and situations where the IRS is satisfied that neither the original exchange nor the early disposition had tax avoidance as one of its principal purposes.
That last exception is the one that generates the most disagreement, because "principal purpose" is a facts-and-circumstances standard rather than a bright line. Documentation of the business reasons behind both the original exchange and any later disposition becomes important if this exception is ever the basis for your position. This is a topic to review with your tax advisor well before an early sale becomes necessary, not after.
Common related-party transaction patterns
Related-party exchanges show up in a handful of recurring patterns. A parent exchanging into a property already owned by an adult child, siblings trading interests in properties held through separate LLCs, and a business owner exchanging into real estate held by a company they control are all common setups that trigger the related-party analysis.
Family limited partnerships add another layer, since the partnership itself may be a related party to individual family members depending on ownership percentages. Reviewing an organizational chart of who owns what, and at what percentage, with your tax advisor before structuring the exchange helps surface related-party issues before they become a problem at closing.
Photo by khezez | خزاز on Pexels
How drop and swap structures can intersect with related-party rules
Investors who exchange out of an LLC or partnership sometimes use a "drop and swap" structure, where partners receive direct ownership interests before the exchange rather than continuing to hold through the entity. When some of those partners are related to each other, the related-party rules can apply on top of the usual drop and swap considerations, adding another layer of timing and documentation questions.
This is a scenario where the interaction between two sets of rules, rather than either rule in isolation, tends to create the most confusion. Advisors who specialize in exchange structuring can walk through how the two overlap for your specific ownership situation, which is a more productive conversation than trying to map it out from general guidance alone.
Documentation and disclosure topics to review with your qualified intermediary
A qualified intermediary handles the mechanics of holding exchange proceeds and facilitating the trade, but the related-party analysis itself usually falls to your tax advisor. Even so, your QI should be told upfront if a related party is involved, since it affects how the exchange documents are drafted and what representations get made about the relationship between the parties.
Topics worth raising with your QI and tax advisor together include how the relationship will be disclosed on the required tax forms, what records should be kept to support the two-year holding period, and whether either party has any known plans that could affect that holding period down the road. Getting these questions answered before the exchange closes, rather than after, tends to save time.
Red flags that can draw additional IRS scrutiny
Certain patterns tend to draw a closer look from the IRS, even when the underlying exchange is legitimate. A related party disposing of their replacement property shortly after the exchange closes, a related-party exchange paired with an unusually short ownership period on the relinquished property, and transactions where the cash flow doesn't match the stated business purpose are all patterns that have drawn attention in past cases.
None of this means a related-party exchange with any of these features is automatically a problem. It means the documentation supporting your business purpose becomes more important, and it's worth discussing with your tax advisor how to build a clear record contemporaneously rather than reconstructing one later if the transaction is ever questioned.
Photo by RDNE Stock project on Pexels
How DST investments fit into the related-party picture
Delaware Statutory Trusts add a different wrinkle. Because a DST pools capital from many unrelated investors into a single trust that holds the property, an investor exchanging into a DST is generally not exchanging with a related party in the way a direct property-to-property trade between family members would be. The trust structure itself, along with the sponsor's role, tends to keep the transaction outside the related-party framework in most standard DST offerings.
That said, some DST-adjacent structures, such as a sponsor affiliate selling a property into a trust, or a family office rolling its own real estate into a DST it helped structure, can raise related-party questions depending on the specifics. If a DST offering involves a sponsor or an affiliate with a prior ownership stake in the underlying property, it's a topic worth raising directly with your tax advisor before you commit capital, since the analysis depends on the exact chain of ownership rather than the general DST label. The SEC's investor education materials cover how pooled real estate offerings like DSTs are structured and regulated, which is useful background before evaluating a specific sponsor.
Working with your tax advisor and QI to structure a compliant exchange
Because the related-party rules combine a specific legal definition, a holding-period requirement, and a facts-and-circumstances exception, this is a poor candidate for a do-it-yourself approach. A tax advisor familiar with Section 1031 can help confirm whether your counterparty actually meets the related-party definition, model out the two-year holding period against your plans for both properties, and identify whether any of the exceptions might realistically apply to your situation.
Your qualified intermediary plays a complementary role, since the exchange documents, timelines, and identification requirements still need to be handled correctly regardless of whether a related party is involved. Coordinating the two advisors early, rather than looping in the QI only after the tax analysis is done, tends to produce fewer surprises.
Questions to ask before you transact with a related party
Before you move forward with an exchange involving a family member, a business partner, or an entity you control, it's worth working through a short list of questions with your advisors: Does the counterparty actually meet the tax code's definition of a related party given the ownership percentages involved? What is each party's specific plan for the replacement property over the next two years? Which exception, if any, might apply if circumstances change before that two-year period ends? How will the relationship and the holding period be documented and reported?
Sitting down with a tax advisor who has handled related-party exchanges before, and a qualified intermediary experienced with the added documentation, is generally the most direct way to get clear answers to these questions for your specific situation. Capivise's advisor matching service can help connect you with vetted professionals who work on exactly these kinds of transactions, and Capivise's questions-to-ask resource offers a broader starting checklist for choosing who to work with on a 1031 exchange.
For the underlying statutory language, the related-party provisions of Section 1031 are available through Cornell Law School's Legal Information Institute, and the IRS overview of like-kind exchanges covers the exchange rules more broadly. General background on working with financial professionals is available through Investor.gov, and NAPFA maintains a directory of fee-only advisors if you're evaluating how a prospective advisor is compensated. If your exchange also touches on choosing a 1031 or DST specialist, Capivise's 1031 and DST advisor matching page and advisor verification guide are additional starting points for vetting who you work with.
