A seller carryback is a home sale financed by the seller instead of a bank: the buyer puts money down, signs a promissory note for the rest, and pays the seller principal and interest on an agreed schedule until the balance is gone. The seller records a lien against the property as security, just as a lender would. Sellers use this structure to reach buyers who can’t qualify for a conventional mortgage, to earn interest on the sale proceeds, and to spread the capital gains tax bill across multiple years through installment sale treatment.
How the Loan Is Structured
The buyer and seller negotiate the loan amount, interest rate, payment frequency, and term inside the purchase agreement. The buyer pays a down payment at closing and then pays the balance in installments, usually monthly. The seller holds a lien on the property that lets them foreclose if the buyer stops paying.
Two payment shapes are common. A fully amortizing note reduces the balance to zero by the end of the term through equal regular payments. A balloon note runs smaller payments for a set period, often five to ten years, and then the entire remaining balance comes due as one lump sum. Balloon deals typically assume the buyer will refinance into a conventional mortgage before the balloon hits. Which structure the seller is even allowed to offer depends on how many seller-financed sales they do per year, because federal rules impose different limits on each track.
When a Seller Can Actually Offer One
Carrybacks work cleanly when the seller owns the property free and clear, or has enough equity that the buyer’s down payment can pay off any existing mortgage at closing. If the seller still owes most of the balance on their own loan, offering a carryback gets legally messy fast.
The reason is the due-on-sale clause, which sits in nearly every conventional residential mortgage. It lets the original lender demand full repayment of the loan whenever the property is sold or transferred.1Cornell Law Institute. Due-on-Sale Clause A seller who transfers title to a buyer through a carryback without first paying off the existing mortgage risks having the original lender call the loan and foreclose.
Federal law does block lenders from enforcing the clause in a few situations: transfers on the borrower’s death, transfers to a spouse or children, transfers incident to a divorce, and transfers into a living trust where the borrower stays a beneficiary.2Office of the Law Revision Counsel. 12 US Code 1701j-3 – Preemption of Due-on-Sale Prohibitions None of these cover an arm’s-length sale to an unrelated buyer, so they only help when a family member is buying.
Existing liens are the other gate. Outstanding tax debts, contractor liens, or judgment liens cloud the title and can make the carryback unenforceable. A title search during escrow catches these, and the seller has to clear them before closing.
Federal Rules That Shape the Loan
Under federal regulations, anyone who arranges a residential mortgage loan is a “loan originator,” which normally means licensing and consumer-protection compliance. Sellers financing their own property can stay outside that classification, but the rules split into two tracks based on volume.
One Property Per Year
A person, estate, or trust that seller-finances only one property in a 12-month window falls under a narrower rule set. The note cannot allow negative amortization, and any adjustable rate has to be fixed for at least the first five years with reasonable caps on future increases. Balloon payments are allowed on this track, because the rule bars only negative amortization, not partial amortization with a lump sum at the end.3Consumer Financial Protection Bureau. 12 CFR 1026.36 – Prohibited Acts or Practices and Certain Requirements for Credit Secured by a Dwelling The seller also cannot have built the home as part of a regular business.
Up to Three Properties Per Year
A seller financing up to three sales in a 12-month window faces stricter terms. The loan must be fully amortizing, so no balloon at all. The seller has to make a good-faith determination that the buyer can reasonably afford the payments. The same adjustable-rate restrictions apply, and the seller still cannot be a regular home builder.3Consumer Financial Protection Bureau. 12 CFR 1026.36 – Prohibited Acts or Practices and Certain Requirements for Credit Secured by a Dwelling
Going past three seller-financed transactions in a year, or missing the loan structure requirements, pulls the seller into full loan-originator status with all the licensing and disclosure obligations that come with it. A one-time seller carrying back their own home has real flexibility. A seller doing this repeatedly does not.
Setting the Interest Rate
The rate is negotiable, but the IRS sets a floor. Any debt instrument issued in exchange for property has to carry at least the Applicable Federal Rate for its term length. Notes of three years or less use the short-term AFR, notes between three and nine years use the mid-term rate, and notes longer than nine years use the long-term rate.4Office of the Law Revision Counsel. 26 US Code 1274 – Determination of Issue Price in the Case of Certain Debt Instruments Issued for Property As of March 2026, those rates are 3.59%, 3.93%, and 4.72%, respectively.5Internal Revenue Service. Rev. Rul. 2026-6 Applicable Federal Rates
Setting the rate below the AFR doesn’t lower the seller’s tax bill. The IRS recharacterizes part of each principal payment as “imputed interest” and taxes it as ordinary income anyway, so the seller ends up owing tax on interest they never actually received. Family deals are where this bites hardest, since the temptation to price generously is strongest and the IRS scrutinizes related-party transactions closely. Match or exceed the AFR for the month the deal closes.
State usury laws set the ceiling. Most states cap interest on private loans, though the specific limit and the penalty for exceeding it vary. Some states void the whole loan if the rate is usurious; others strip only the excess. A real estate attorney familiar with local lending law can confirm the rate sits inside the legal range.
The Documents That Make It Enforceable
Two documents carry the deal: the promissory note and the security instrument.
The Promissory Note
The promissory note is the buyer’s written promise to repay. It states the principal amount, interest rate, payment schedule, and maturity date. If there’s a balloon, the note names the balloon amount and its due date. Late fees, the definition of default, and the seller’s remedies on default all belong in the note.
The math has to be right. An error in the interest calculation or amortization schedule can produce a legal fight years later when someone realizes the numbers never worked. Verify the payment schedule against an independent amortization calculator before anyone signs.
The Deed of Trust or Mortgage
The security instrument ties the note to the property itself. Depending on state practice, it’s either a deed of trust or a mortgage, and both give the seller the right to foreclose if the buyer stops paying.6Consumer Financial Protection Bureau. Deed of Trust / Mortgage Explainer The document includes the legal description of the property, the names of the parties, and cross-references the financial terms in the note.
The choice between instruments affects how the seller collects if things go wrong. A deed of trust typically permits nonjudicial foreclosure, which is faster. A mortgage usually requires a lawsuit, which takes longer but gives the buyer more procedural protection. State law and local custom decide which instrument gets used, not the seller.
A title company or attorney should draft both documents. Internet templates are a false economy: recording requirements, legal description formats, and notarization rules vary by jurisdiction, and a rejected recording leaves the seller’s lien unprotected.
Closing and Recording
Both parties sign in front of a notary, and the deed of trust or mortgage is then filed with the county recorder. Recording is what “perfects” the seller’s lien and locks in priority over later claims against the property. Skipping this step can push the seller behind any future loans the buyer takes out or judgments entered against them. An escrow or title company usually manages the closing, paying off any existing liens, collecting the down payment, disbursing funds, and getting the new deed and security instrument recorded.
How the Seller Is Taxed
The IRS treats a seller carryback as an installment sale. Each payment contains three pieces: a tax-free return of the seller’s adjusted basis in the property, a capital gain portion, and interest income.7Internal Revenue Service. Publication 537 (2025), Installment Sales Only the gain and interest portions are taxable. Interest is taxed as ordinary income; the gain is taxed at capital gains rates.
The seller calculates a “gross profit percentage” (total gain divided by total contract price) and applies it to each payment after subtracting the interest portion. That produces the taxable gain for each year. Spreading the gain across multiple tax years is one of the main financial reasons to carry back rather than take all cash.
Installment sale income is reported on IRS Form 6252 for the year of sale and every year afterward until the note is paid off or otherwise disposed of, even in years with no payment received.8Internal Revenue Service. Installment Sale Income – Form 6252 The gain flows through to Schedule D or Form 4797 depending on whether the property was personal-use or rental/business.7Internal Revenue Service. Publication 537 (2025), Installment Sales
One trap surprises landlords. Depreciation recapture cannot be spread across payments. If the seller claimed depreciation on the property while they owned it, all recaptured depreciation must be reported as ordinary income in the year of sale, whether or not the buyer has paid a dime yet.7Internal Revenue Service. Publication 537 (2025), Installment Sales On a heavily depreciated rental, that first-year tax bill can easily exceed the cash the seller received at closing.
What Happens if the Buyer Stops Paying
The seller’s remedy depends on the security instrument and the state.
With a deed of trust, the seller can usually pursue nonjudicial foreclosure. It starts with a notice of default that itemizes the missed payments and gives the buyer a deadline to cure. If the buyer doesn’t cure, the trustee named in the deed of trust records a notice of sale and eventually auctions the property. The full nonjudicial process typically runs a few months, with the timeline set by state law.
With a mortgage, the seller usually has to file a lawsuit and win a judgment before the property can be sold. Judicial foreclosure runs slower and costs more, sometimes stretching well past a year. Some states also give the buyer a redemption period after the sale during which they can reclaim the property by paying the full debt.
The default language in the promissory note controls a lot of this. A well-drafted note fixes how many days late triggers default, what late fees apply, and exactly how the seller has to deliver notice. Vague language invites the buyer to challenge the foreclosure. Sellers should have an attorney draft the note and should follow its notice procedures to the letter if they ever have to use them.
Risks Worth Weighing Before You Sign
For the Seller
Buyer default is the headline risk. Unlike a bank, most individual sellers cannot easily absorb months of missed payments while grinding through foreclosure, and if the property has deteriorated by the time they get it back, the loss compounds. A meaningful down payment, 20% or more is common on carrybacks, gives the buyer something to lose and cushions the seller if repossession becomes necessary.
Property neglect, unpaid property taxes, and lapsed homeowner’s insurance are quieter risks. Escrow provisions in the loan agreement, or a third-party servicer running an impound account, protect against them.
For the Buyer
The dangerous scenario is buying into a wraparound where the seller still owes an underlying mortgage. The buyer pays the seller, and the seller is supposed to pay the original lender. If the seller pockets the money instead, the original lender can foreclose, and the buyer can lose the home while never having missed a payment. A buyer entering any carryback where the seller has an existing loan should insist that payments route through a third-party servicer that pays the original lender first.
Balloon payments are the other buyer risk. A buyer counting on refinancing before the balloon comes due may find their credit, the property’s appraised value, or the interest rate environment won’t support a conventional loan when the deadline arrives. Negotiating a longer term or a fully amortizing note eliminates the balloon risk entirely, at the cost of higher payments or a higher rate.