Related Party 1031 Exchanges: Rules, Risks, and Compliance

Exchanging property with a family member, a business partner, or a related entity can seem like a natural way to keep a deal within a trusted circle, but it is one of the more heavily scrutinized areas of 1031 exchange practice. The related party 1031 exchange rules under IRC Section 1031(f) exist specifically to prevent taxpayers from using a like-kind exchange to quietly cash out of an investment while a related party absorbs the tax basis. Get the structure wrong and the IRS can retroactively disqualify the deferral you thought you had secured. This guide explains who counts as a related party, what the two-year holding rule requires, the exceptions that exist, and how to think through a related-party transaction before you commit to one.

Related-party exchanges carry more compliance risk than a standard exchange. Talk with the Aspen Exchange team before you structure a deal involving a family member, trust, or related entity, so your documentation supports the position you are taking.

What Does IRC Section 1031(f) Say?

Section 1031(f) was added to the Internal Revenue Code specifically to address a pattern the IRS was seeing: taxpayers exchanging property with a related party, and then one side of the transaction selling the property shortly afterward to effectively convert what should have been a taxable sale into a tax-deferred exchange. The rule generally requires that if a taxpayer exchanges property with a related party, both the taxpayer and the related party generally must hold their respective properties for at least two years after the date of the last transfer that was part of the exchange. If either party disposes of the property they received within that two-year window, the original exchange can generally be disqualified retroactively, and the deferred gain becomes taxable in the year of the disqualifying disposition.

This retroactive disqualification is what makes related-party exchanges particularly risky. An investor might complete an exchange, file taxes assuming deferral, and then trigger an unexpected tax bill a year later because a related party sold their property earlier than the rule allows.

Who Counts as a “Related Party” for 1031 Purposes?

The definition of a related party for 1031 exchange purposes generally borrows from IRC Sections 267(b) and 707(b), which cast a fairly wide net. Related parties can generally include:

• Family members, including siblings, spouses, ancestors (parents, grandparents), and lineal descendants (children, grandchildren). Notably, in-laws, cousins, and more distant relatives are generally not considered related parties under this definition.
• An individual and a corporation in which that individual owns more than 50 percent of the outstanding stock, directly or indirectly.
• Two corporations that are members of the same controlled group.
• A partnership and a person who owns more than 50 percent of the capital or profits interest in that partnership.
• A trust and its grantor, or a trust and a beneficiary, in certain circumstances.
• Other entities under common control, where the same individuals or group hold majority ownership across multiple entities.

Because the definition includes indirect ownership and attribution rules, it is possible to be considered related to a party even without a direct ownership stake yourself. This is an area where a careful review with your CPA or attorney before closing is genuinely important, since the related-party determination is not always obvious from the surface of a deal.

Why the IRS Scrutinizes Related-Party Exchanges

The concern behind Section 1031(f) is a specific fact pattern often referred to as “basis shifting” or a “swap and drop” arrangement designed to convert a low-basis property into cash without paying tax. A simplified version of the concern looks like this: an investor with a highly appreciated, low-basis property exchanges it with a related party who holds a similar property with a higher basis and little embedded gain. If the related party then quickly sells the property they received (which now carries a low basis) at full market value, they would owe tax on a large gain, while the original investor holds a property with a fresh high basis that could be sold with little or no tax due. Absent the two-year holding requirement, this maneuver could allow gain to effectively disappear from the system rather than merely being deferred. The related-party rule closes that door by generally requiring both properties to be held for at least two years, so any subsequent sale generates its own taxable event in the normal course.

Exceptions to the Two-Year Holding Requirement

Section 1031(f) includes several statutory exceptions where an early disposition generally will not disqualify the original exchange. These generally include:

• Death of either party. If either the taxpayer or the related party dies before the two-year holding period ends, the early disposition of the property (through the estate, for example) generally will not trigger disqualification.
• Involuntary conversion. If the property is compulsorily or involuntarily converted, for example through condemnation, eminent domain, or a casualty loss, and the exchange occurred before the threat or imminence of that conversion became known, the exception can generally apply.
• Transactions with a non-tax-avoidance purpose. The statute includes a general exception where the taxpayer can establish that neither the exchange nor the early disposition had tax avoidance as one of its principal purposes. This exception is narrower in practice than it sounds, and the burden generally falls on the taxpayer to demonstrate the legitimate business or personal reason for the early sale.

Because the “non-tax-avoidance” exception is fact-intensive and has been the subject of IRS guidance and litigation over the years, taxpayers generally should not rely on it as a planning assumption. It functions more as a narrow safety valve for legitimate, unanticipated circumstances than as a reliable planning tool.

Common Related-Party Scenarios Investors Consider

• Selling relinquished property to a family member as the buyer. This does not automatically violate 1031(f) on its own, but if the family member is also providing your replacement property, or if there is any appearance of a coordinated swap, the transaction deserves careful structuring.
• Buying replacement property from a related party. Purchasing your replacement property directly from a parent, sibling, child, or a corporation or partnership you control can be a related-party exchange even if the related party is not disposing of anything else, and it generally still triggers the two-year holding requirement on both sides.
• Exchanging between related entities you control. Moving property between an LLC you own and a trust or entity controlled by a family member is a common structure that requires careful related-party analysis, especially where indirect ownership attribution applies.
• Parent-to-child transfers intended as estate planning. Some families consider a related-party exchange as part of a broader succession plan. These can work, but the two-year holding rule and its exceptions need to be mapped out with an estate planning attorney and CPA well before closing.

Practical Guidance Before You Structure a Related-Party Exchange

• Confirm the related-party determination first. Do not assume a counterparty is or is not related. Work through the attribution rules with your CPA, particularly for entity ownership and trusts.
• Plan for a genuine two-year hold on both sides. If either party may need liquidity sooner than two years, a related-party structure carries real risk of retroactive disqualification.
• Document the business purpose. If there is a legitimate, non-tax reason for the structure, keep records that support it from the outset rather than reconstructing a rationale later.
• Use a qualified intermediary regardless of the relationship. A related-party exchange still requires a qualified intermediary who is not a disqualified person, and proper documentation matters even more when the IRS is likely to look closely at the deal.
• Get advice before you sign a purchase agreement, not after. Related-party structures are far easier to plan correctly up front than to unwind or defend after the fact.

For general background on the exchange process itself, see our complete guide to 1031 exchange rules and our overview of what a 1031 exchange is.

Frequently Asked Questions

Plan Your Exchange Before You Sell

Related-party transactions can be a legitimate part of a family’s or a group of investors’ broader real estate strategy, but the compliance stakes are higher and the margin for error is smaller. Getting the related-party analysis, holding period, and documentation right from the start is far easier than defending the position after the IRS asks questions. Contact our exchange team before you structure a transaction involving a family member or related entity, so your exchange is built to hold up.

This article is educational information, not tax, legal, or investment advice. Consult your own qualified advisors regarding your transaction.