The Related Party Rules in 1031 Exchanges

Section 1031 allows investors to defer capital gains by exchanging like-kind real property. But when a buyer or seller in the exchange is a related party, a family member, a business partner, or a controlled entity, the rules change significantly. Violations of the related party rules are one of the most common causes of failed 1031 exchanges, and they occur without any intent to cheat.

This guide explains who counts as a related party, what the related party rules restrict, the two-year holding requirement, and how to structure exchanges that involve family or affiliated entities without disqualifying the deferral.

Who Is a Related Party Under Section 1031?

The IRS defines related parties broadly, pulling definitions from Sections 267 and 707(b) of the Internal Revenue Code. Related parties include:

• Family members. Your spouse, siblings, ancestors, and lineal descendants. Note that cousins are not related parties under this definition, but parents, grandparents, children, and siblings are.

• Controlled entities. A corporation, partnership, trust, or estate in which you own (directly or indirectly) more than 50% of the capital or profits interest.

• Entities you control together. Two entities that are both controlled more than 50% by the same person.

• Business partners. A partnership and one of its partners, when the partner holds more than a 50% interest.

The 50% threshold is applied using constructive ownership rules: your ownership of an entity held through a trust, estate, or another entity counts toward the calculation.

What the Related Party Rules Restrict

Section 1031(f) was added in 1989 specifically to prevent two related parties from swapping properties with no real change in economic substance, exchanging a high-basis property for a low-basis property, for example, without either party paying tax.

The core restriction: if a 1031 exchange involves a related party, either as a seller of replacement property or as a buyer of the relinquished property, one of two things must be true. First, both properties must be held for at least two years after the exchange. Second, if either property is sold or disposed of within two years, the original exchange fails, and the deferred gain becomes immediately taxable.

This is the two-year holding period requirement. It applies to both the exchanger and the related party.

The Two Scenarios That Trigger the Related Party Rules

Scenario 1: Buying replacement property from a related party. If you buy your replacement property from your brother, and your brother sells that property within two years of your exchange, your deferred gain becomes taxable. Your brother’s action triggers your tax bill.

This is the scenario that surprises most investors. The exchanger believed they completed a valid exchange. The related party seller made an independent business decision to sell. The tax code treats both events as connected and disqualifies the original deferral.

Scenario 2: Selling the relinquished property to a related party. If you sell your relinquished property to a controlled entity, and that related party sells the property within two years, the same result applies: your deferred gain becomes taxable.

Exceptions to the Two-Year Rule

The IRS provides three exceptions where a disposition within two years does not trigger the related party rules. First, the disposition was the result of the death of either the exchanger or the related party. Second, the disposition was an involuntary conversion such as a condemnation or casualty loss. Third, neither the exchange nor the disposition had tax avoidance as one of its principal purposes.

The third exception is narrow and fact-specific. The IRS scrutinizes it closely. Do not rely on it without explicit guidance from a tax attorney.

Common Mistakes Investors Make

Exchanging into a property sold by a family-controlled LLC. If you buy your replacement property from an LLC where your adult children own 60% of the membership interests, you have purchased from a related party. The two-year clock starts.

Selling the relinquished property to a business partner. If you and a business partner each own 40% of an LLC, and you sell your relinquished property to that LLC, you have sold to a related party. Constructive ownership rules can push your interest above 50% depending on the facts.

Using a 1031 exchange to transfer a low-basis property to a family member at a stepped-up cost basis. This is exactly the transaction the related party rules were designed to prevent. The IRS regularly examines transactions that result in a shift of basis between related parties.

How to Structure Exchanges Involving Related Parties

Buy from unrelated third parties. The cleanest solution is to buy replacement property from a seller with no family or business relationship to you. If you have identified a property from a related party, consider whether an unrelated seller can provide equivalent replacement property.

Hold both properties for two years. If you buy from a related party or sell to a related party, ensure that both properties are held for at least two years after the exchange closes. Document the holding intention clearly.

Get advance ruling from the IRS. For large transactions involving related parties, investors with complex structures can request a Private Letter Ruling from the IRS confirming that the exchange will qualify. This is expensive and time-consuming but eliminates uncertainty for large transactions.

Work with a tax attorney before the exchange. Related party rules require specific analysis of your ownership structure before you begin. Post-exchange, there is no correction available if the structure was wrong.

Frequently Asked Questions

Can I exchange with my spouse? Yes, but with caution. Spouses are related parties. An exchange in which you buy replacement property from your spouse is subject to the two-year holding requirement.

Is my LLC a related party to me? It depends on your ownership percentage. If you own more than 50% directly or through constructive ownership, yes. If your ownership is 50% or below, the entity is generally not a related party.

What happens if a related party sells within two years and I did not know about it? The IRS generally holds the exchanger responsible for the tax. Ignorance of the related party’s disposition is not an exception under the statute.

Does the two-year clock apply to DST interests? DSTs involve a passive beneficial interest, not direct property ownership. The related party rules focus on the disposition of the underlying real estate, not the transfer of beneficial interests. However, DSTs should still be analyzed if the DST sponsor or trustee is a related party.

The Bottom Line

The related party rules exist to prevent basis shifting between family members and controlled entities through 1031 exchanges. They are not complicated in concept, but they are easy to trigger accidentally, particularly in family business or estate planning contexts.

Investors who buy from or sell to related parties should plan the exchange with a tax attorney, confirm the two-year holding structure, and document their intent to hold. The cost of getting it wrong is the entire deferred gain becoming taxable.

Considering a 1031 exchange that involves a family member or affiliated entity? Talk to a Specialist to understand how the related party rules apply to your specific structure before the exchange begins.

This article is educational and is not tax, legal, or investment advice. Consult your own CPA, tax attorney, and qualified financial professional before pursuing a 1031 exchange.