1031 Exchange Related-Party Rules

Related-party §1031 exchanges are one of the most heavily audited areas of §1031 practice. The rule in IRC §1031(f) is short — a few paragraphs — but the IRS interprets it strictly, and the 2-year trap has caught many investors who thought a family-LLC sale was a clean §1031. The economics behind the rule: without §1031(f), related parties could shift basis between themselves to extract deferred gain, defeating the policy purpose of §1031. With §1031(f), the IRS forces both parties to hold the received property for at least two years, preserving the deferral structure.

§1031(f) — Who Is a Related Party

The §1031(f) related-party definition cross-references IRC §267(b) and §707(b). The full list:

• Family members. Spouse, ancestors (parents, grandparents), descendants (children, grandchildren), and siblings (half or whole). Notably absent: in-laws, cousins, aunts and uncles, nieces and nephews — these are not related parties under §1031(f).
• Controlled corporations. A corporation in which the taxpayer (and family members) own more than 50% of the stock by value or vote.
• Controlled partnerships. A partnership in which the taxpayer (and family members) own more than 50% of the capital or profits interests.
• Controlled trusts. A trust where the taxpayer is a grantor or substantial beneficiary, or related parties are.
• Two corporations of the same controlled group. Per §267(f).
• Estate-related parties. Estate executors and beneficiaries, in certain configurations.

The "more than 50%" test is the operational threshold for entity-level relationships. Owning exactly 50% is not "related"; owning 50.1% is. Family attribution (counting spouse and lineal-relative ownership) often pushes a borderline ownership over the threshold.

The 2-Year Holding Requirement (Both Sides)

If the §1031 exchange involves a related party (typically: the taxpayer sells to a related buyer, or the taxpayer buys from a related seller), §1031(f)(1) imposes a two-year holding requirement on both sides:

• The taxpayer must hold the property received in the §1031 for at least two years from the date of the exchange.
• The related party must hold the property received from the taxpayer for at least two years from the same date.

If either party disposes of the received property within two years, §1031(f)(1)(C) treats the original exchange as if it had not been a §1031 — meaning gain that was deferred is recognized in the year of the early disposition. Both parties may owe tax: the original taxpayer recognizes the gain on the relinquished, and the related party recognizes any gain on its own subsequent sale.

The 2-year clock starts on the §1031 closing date — the day the relinquished sale and replacement purchase complete. It does not start on the original property's acquisition date or any other date.

§1031(f)(2) Exceptions (Death, Disaster, Non-Tax-Avoidance)

Three narrow exceptions in §1031(f)(2) preserve the §1031 even if the 2-year hold is broken:

• (A) Death of the taxpayer or related party. If either party dies within the 2-year window, the disposition triggered by death (estate sale, distribution to heirs, step-up at death) does not retroactively void the §1031.
• (B) Compulsory or involuntary conversion. If the property is taken by eminent domain, destroyed by fire/flood/disaster, or otherwise involuntarily converted under §1033, the early disposition is excused.
• (C) Non-tax-avoidance. If the IRS finds that "neither the exchange nor the disposition had as one of its principal purposes the avoidance of federal income tax," the early disposition is excused.

The (C) exception is the most commonly invoked but the most fact-specific. The IRS evaluates the totality of circumstances — economic motivation for both transactions, basis stepping, pattern of related-party exchanges, audit history — to decide whether tax avoidance was a principal purpose. The taxpayer typically loses if the related-party structure produces a tax benefit that would not have been available between unrelated parties.

Common Trap: Selling to a Family LLC You Control

The classic §1031(f) trap: a taxpayer wants to sell a rental property to a family member or a family LLC to extract cash while preserving §1031 deferral. The structure typically involves:

• The taxpayer sells the rental to a family LLC (parent, sibling, controlled by spouse or children) for cash.
• The taxpayer uses the cash through a QI to buy a replacement property unrelated to the family.
• The family LLC sells the rental to a third party shortly after acquisition.

The economics: the taxpayer's §1031 defers gain on the sale; the family LLC's basis in the rental equals its purchase price (generally a step-up if the rental had appreciated); the family LLC's subsequent sale produces little or no taxable gain. The family unit has effectively extracted the §1031 deferral as cash.

This is exactly what §1031(f) prevents. The IRS treats the family LLC's early sale as voiding the original §1031, recognizing the original taxpayer's deferred gain. Both the taxpayer and the family LLC may owe tax; both may face penalties.

The fix: hold both sides for two years. If the taxpayer's CPA advises that the family-LLC structure is the right strategy, both parties commit to the 2-year hold. The deferral works, but liquidity is delayed.

Reverse-Related-Party: Buying From Family

The reverse scenario — the taxpayer buys the replacement property from a family member — also triggers §1031(f). The 2-year hold applies on both sides:

• The taxpayer must hold the replacement (purchased from family) for at least two years.
• The family seller must hold whatever they received in exchange (typically cash) for two years — meaning they cannot reinvest it in property that creates a circular structure.

The IRS scrutinizes circular-structure exchanges where related parties effectively swap properties through the §1031 mechanism. The cash leg of the transaction matters; the family seller cannot use the cash to buy back the original taxpayer's relinquished property without violating §1031(f).

Simple 1031 LLC is a Qualified Intermediary. We do not provide tax, legal, or investment advice. Related-party exchanges are highly fact-specific and routinely audited; the analysis of who counts as a related party in your specific situation, whether the 2-year hold is feasible, and whether the §1031(f)(2)(C) non-tax-avoidance exception might apply should all be reviewed with your CPA and tax attorney before listing the relinquished property. Mishandling §1031(f) can collapse the deferral retroactively and produce penalties.

Frequently Asked Questions