The "Family Discount" That Could Cost You Everything
It is the most natural instinct in real estate: you want to sell your high-maintenance apartment building and buy your father’s manageable commercial warehouse. You keep the asset in the family, you know the property’s history, and you cut out the broker fees.
But if you are doing a 1031 exchange, buying from a relative is one of the most dangerous transactions you can attempt.
While Section 1031(f) allows you to sell to a related party (with restrictions), it effectively forbids you from buying from a related party in most scenarios. The IRS views these transactions as a primary vehicle for "basis shifting"—a tax avoidance scheme where families swap low-basis properties for high-basis properties to wipe out capital gains.
In 2026, reporting requirements on Form 8824 have tightened, and the "good faith" defense is no longer enough. If you buy your replacement property from your mother, your corporation, or your family trust, you are walking into an audit trap unless you follow one very narrow path.
This article details why buying from family is usually fatal to an exchange and the single exception that allows it.
The Core Prohibition: Revenue Ruling 2002-83
The IRS’s stance on this is clear and aggressive.
The Scenario:
- You sell a property to a stranger for $1 million. Your cash goes to a Qualified Intermediary (QI).
- You instruct the QI to buy a $1 million replacement property from your father.
- Your father receives the $1 million cash and retires.
The Verdict: Disallowed. Even though you used a QI, the IRS argues that the net result is that your family group "cashed out" of the investment while keeping the tax-deferred property. Your father got the cash, and you kept the real estate.
Under Revenue Ruling 2002-83, the IRS pierces the veil of the QI. They treat the transaction as if you swapped directly with your father. Since your father cashed out, the exchange is invalid, and you owe all the taxes on your original sale.
The "Basis Shifting" Sin
To understand the rule, you must understand the crime: Basis Shifting.
Imagine you have a property with $0 basis (100% taxable gain). Your father has a property with $1 million basis (0% taxable gain).
- If you swap properties, you transfer your low basis to his property.
- If he then sells your old property (now his), he pays no tax because of his high basis.
- Result: The family sold the asset tax-free.
The IRS blocked this with Section 1031(f). They demand that in a related party transaction, the economic position of the family unit must not change.
The One Exception: Both Parties Must Exchange
You can buy from a related party, but only if both of you stay in the game.
For your purchase of your father's property to qualify, your father must also do a 1031 exchange.
- You sell your property and buy his.
- He sells his property (to you) and must buy a new replacement property of equal or greater value.
- The 2-Year Rule: Both of you must hold your new properties for two years after the swap.
If your father touches the cash, pays off debt, or simply pockets the money, your exchange is retroactively failed. The family unit cannot "cash out" any equity in the process.
Who is a "Related Party"?
The definition is broader than you think. Under Section 267(b) and 707(b), a related party includes:
- Family Members: Siblings, spouses, ancestors (parents/grandparents), and lineal descendants (children/grandchildren).
- Entities: A corporation or partnership in which you own more than 50% of the stock or capital interest.
- Trusts: A grantor and a fiduciary of a trust, or fiduciaries of two different trusts with the same grantor.
Crucial Note: In-laws, step-siblings, and uncles/aunts are generally not considered related parties under this code section. This is a common "loophole" for keeping assets in the extended family.
The "2-Year Hold" Monitor
If you successfully execute a related party swap (where both of you exchange), you are married to that property for two years.
- The Trigger: If either of you sells your new property within 2 years of the closing date, both exchanges fail.
- The Consequence: The IRS will retroactively disallow the deferral for the year the exchange occurred. You will owe the back taxes plus interest.
- Exceptions: The 2-year clock stops for death, involuntary conversion (disaster/seizure), or if you can prove the sale was not for tax avoidance (very hard to prove).
People Also Ask (FAQ)
Can I buy from my own LLC? No. If you own more than 50% of the LLC, it is a related party. You cannot sell a property individually and buy a replacement property from your own company. That is considered buying from yourself.
What if I buy from my brother but he pays tax on his gain? It does not matter. Even if your brother pays capital gains tax on the sale, your exchange is still disallowed if he cashes out. The IRS requires that the related party also defers their gain (does an exchange) to prevent basis shifting.
Does this apply if I buy just a small interest, like 10%? Yes. The rules apply regardless of the size of the interest. However, if you own less than 50% of a partnership, that partnership is not considered a related party to you. This allows for some planning opportunities with minority-interest entities.
Can I buy my parents' house as a rental? This is extremely risky. In addition to the related party rules, you face the "Arms-Length Transaction" scrutiny. If you buy it for less than fair market value, the IRS can reclassify the difference as a gift, complicating the basis calculations and potentially invalidating the exchange.
Final Thoughts: The Audit Risk
In 2026, the IRS uses algorithms to match surnames and entity ownership records on 1031 filings.
Key Takeaway: Do not buy from a related party unless that party is also committed to a full 1031 exchange and a 2-year hold.
- If your goal is to help your parents cash out, you cannot use your 1031 money to do it.
- You must buy from a third party, or your parents must be willing to stay invested in real estate for another two years.
