Related-Party Installment Sale: Selling to Family Without Losing the Deferral

How a related-party installment sale works

The installment method does not care who the buyer is. Sell a property to your daughter for a note, and you report gain as she pays, the same as with a stranger (see the installment sale analysis). Families use this to pass on a farm, a building or a company over time while the seller keeps an income stream and a security interest.

Because family members can coordinate in ways strangers cannot, the Code adds three guardrails:

1. The two-year resale rule, 453(e). If the related buyer disposes of the property before you have been paid in full and within two years of your sale, the amount the buyer realizes is treated as received by you at that time, up to your unpaid contract price. For marketable securities there is no two-year limit.
2. Depreciable property to a controlled entity, 453(g). If the property is depreciable in the buyer's hands and the buyer is related under 1239(b), the installment method does not apply: all payments are treated as received in the year of sale, and Section 1239 makes the gain ordinary income. The buyer also cannot step up its basis until you include the gain.
3. Cancellation at face, 453B(f). If you cancel the note, or it becomes unenforceable, the obligation is treated as disposed of, and between related persons its value is treated as not less than face. Forgiving payments as gifts triggers the deferred gain.

Who counts as related

The definitions differ by rule:

• For the resale rule (453(f)(1)): anyone whose stock would be attributed to you under 318(a), which covers your spouse, children, grandchildren and parents, plus entities you control, and anyone with a 267(b) relationship, which adds brothers and sisters, many trusts, and corporations and partnerships more than 50% owned.
• For depreciable property (453(g)(3) and 1239(b)): you and entities more than 50% owned by you directly or through family attribution, a trust in which you or your spouse is a beneficiary (unless remote), an executor and an estate beneficiary, and commonly controlled partnerships.

A child buying land personally is related for the resale rule but cannot trigger 453(g) on bare land, because land is not depreciable. If the child's LLC buys a building, 453(g) can apply.

Who it fits, and who it does not

• Fits: a parent selling land, a farm or a business interest to a child who will operate or hold it for years; a seller who wants payments and estate value to move gradually.
• Fits with care: buildings or equipment sold to a family entity, only with a documented showing that tax avoidance was not a principal purpose (453(g)(2)).
• Does not fit: a plan where the family member resells to an outside buyer soon after. That is exactly what 453(e) targets.
• Does not fit: sellers with a loss, which 267(a)(1) disallows between related persons, or sellers counting on releasing suspended passive losses, since 469(g)(1)(B) does not release them on a sale to a related party until the property leaves the related group.

Worked example (engine-computed)

Assumptions: a parent sells investment land to a son on March 1, 2026 for $2,000,000 on an installment note; gross profit percentage 50%; no debt assumed. By the end of 2027 the son has paid $300,000.

The amount treated as received is the lesser of the resale price or the $2,000,000 contract price, minus payments already received. The parent's later note payments are not taxed again until they exceed the accelerated amount (453(e)(5)). The two-year clock stops running while the son's risk of loss is substantially diminished, for example by a put or a short sale (453(e)(2)(B)).

IRS stance and audit risk

Related-party sales are legitimate and common, and none of these rules is a listed transaction or transaction of interest. The IRS watches for three things: resales inside the window, depreciable property moved to a controlled entity on a note, and notes that are really gifts. Exceptions to the resale rule are in 453(e)(6) and (7): a sale of stock back to the issuing corporation, an involuntary conversion after a first disposition that preceded the threat, any transfer after the death of the seller or the related buyer, and cases where you establish that neither sale had tax avoidance as a principal purpose. IRS Publication 537 says an involuntary second disposition such as a creditor's foreclosure generally qualifies, as does a resale on an installment basis with terms substantially equal to or longer than the first sale.

The statute of limitations on the first sale stays open until two years after you notify the IRS of a second disposition (453(e)(8)). The note should carry interest at least at the applicable federal rate, or part of the principal is recharacterized as interest under Sections 483 or 1274, and a below-market price is part gift.

Costs and fees

Expect attorney fees for the purchase agreement, note, deed of trust or security agreement, and an independent appraisal to support the price. Servicing the note through a third party keeps the record clean. The hidden cost is family risk: a note to a child is still a credit decision. Use the same protections you would use with a stranger: a down payment, a first-position deed of trust or UCC lien, a personal guarantee from the child's spouse or co-owners where appropriate, acceleration and due-on-sale clauses, insurance on the collateral, and annual financial reporting. If a child defaults on real property, Section 1038 limits the gain on repossession.

How it compares with a Section 453 sale to a third party

The tax math on each payment is the same; the difference is the extra rules and the buyer. A third-party installment sale has no resale window, no 453(g) bar and no face-value rule on cancellation. A family sale can keep the property in the family and let the buyer pay over time from operations. If the family's real goal is moving value out of a large estate, compare it with an installment sale to a grantor trust, a self-cancelling note or gifting before a sale.

Hans studies the tax side of these decisions. The $5,000 Big Sale Tax Analysis models the family sale side by side with a cash sale and the other paths.

Frequently asked questions