A seller carryback is treated as a residential workaround for buyers who cannot qualify. It is not. In a stalled commercial market, the seller carryback is the cheapest and fastest source of gap capital on the table, and it sits inside every deal where the buyer's bank will not lend the full price. When the senior lender funds 55 to 60 percent of value and the buyer brings 25 percent of equity, the space between those two numbers is not a dead zone. It is a note the seller can write, in second position, at terms both sides negotiate directly. The thesis: where debt has repriced and buyers and sellers cannot agree on price, seller carryback financing bridges the gap that would otherwise kill the trade, and it does so while handing the seller a tax deferral the all-cash sale cannot.
Key Takeaways
A seller carryback is a subordinate note the seller holds behind the buyer's senior loan, filling the gap between what the bank will fund and what the buyer will put in as equity.
The Mortgage Bankers Association reports roughly $875 billion in commercial and multifamily mortgage debt matures in 2026, about 17 percent of the roughly $5 trillion outstanding, which is exactly the environment that produces refinancing gaps a carryback can close.
Under the installment method in IRC Section 453, a seller who carries paper recognizes gain only as principal is collected, spreading the tax across the years the note pays rather than all in the year of sale.
Depreciation recapture is the exception: the IRS requires it to be recognized in full in the year of sale, so the deferral applies to the remaining capital gain, not to recapture.
A carryback is not free money for the seller. It is priced credit at a negotiated rate and a subordinate lien position, and it should be underwritten as a loan, not treated as a discount.
What Is a Seller Carryback and Why Does It Matter in a Stalled Market?
A seller carryback is financing the seller extends to the buyer, holding a promissory note secured by a deed of trust on the property instead of taking that portion of the price in cash at closing. It matters in a stalled market because it supplies the layer of capital that has gone missing: the gap between a shrunken senior loan and the equity a buyer will commit.
The gap is not theoretical. The Mortgage Bankers Association reports that about $875 billion in commercial and multifamily mortgage debt matures in 2026, with another $652 billion due in 2027. A loan written five years ago at 60 to 75 percent of a then-higher value, now facing a senior lender who will refinance at 55 to 60 percent of a repriced value, leaves an equity gap that must be filled by new capital, a restructured balance, a partner, or a sale. The same math means a buyer's bank funds less of the purchase price than it would have in 2021, and the difference is what a seller can carry.
This layer sits in the same place as other subordinate capital in the capital stack: above common equity, below the senior mortgage. What changes is who provides it and at what cost. A seller who wants the deal to close, and who would otherwise sit on an unsold asset in a thin market, is often the most motivated and least expensive lender for that slice.
How Does a Seller Carryback Compare to a Bank Loan and Mezzanine Debt?
A seller carryback usually sits in second position behind the senior bank loan, at a negotiated rate, on terms the two principals set without a credit committee. A bank senior loan is first-lien, covenant-heavy, and priced to market. Mezzanine debt is subordinate too, but it is institutional, expensive, and secured by a pledge of the ownership interest rather than a property lien.
Law firms that document these deals, including Brewer Offord & Pedersen LLP and Blake Law Firm, describe the standard structure the same way: the buyer makes a down payment, a bank finances a portion, and the seller carries a subordinate note in second position, memorialized by a promissory note and secured by a recorded deed of trust. When the seller subordinates, the subordination agreement must contain safeguards on the senior loan's terms, because the carryback holder accepts a junior claim on the same collateral.
The rates below are representative ranges, not quotes from a single survey.
Instrument | Representative rate | Lien priority | Typical terms |
|---|---|---|---|
Senior bank loan | Roughly 6 to 7 percent in the current market | First lien on the property | 5 to 10 year term, amortizing, DSCR and covenant tests, origination fee |
Seller carryback | Typically 6 to 9 percent, negotiated | Second position, subordinate to the senior loan | 2 to 5 years, interest-only or amortizing, balloon, few or no fees, flexible |
Mezzanine debt | Often low double digits to mid-teens | Subordinate, secured by a pledge of the equity interest | 2 to 5 years, intercreditor agreement, institutional documentation |
The instrument that most closely competes with a carryback is mezzanine debt, which is priced for an institutional return and layered with intercreditor complexity, while a carryback is priced by a counterparty who already knows the asset. A short-term senior bridge loan can fill a gap too, but it carries origination cost and a hard maturity, where a carryback's terms are whatever the two sides write.
What Does a Seller Carryback Look Like in a Real Deal?
Consider a buyer acquiring a stabilized asset for $10 million. The senior bank lends 60 percent, or $6 million, at 7 percent. The buyer commits 25 percent of the price, or $2.5 million, in equity. That leaves a $1.5 million gap between the price and the capital in hand, and without a fourth source the deal does not close at $10 million.
The seller carries the $1.5 million as a second-position note at 8 percent, interest-only, with a three-year balloon. The buyer pays $120,000 a year in interest and refinances or sells to retire the note at the balloon. The gap closes, the trade happens at a price the seller accepts, and the buyer avoids raising a more expensive slice of preferred or mezzanine capital.
Now the seller's side, which is where the carryback earns its keep. Assume the seller's adjusted basis after depreciation is $4 million. On a $10 million sale, gross profit is $6 million and the gross profit percentage is 60 percent. Under the installment method in IRC Section 453, reported on IRS Form 6252, the seller recognizes gain as payments are received, multiplying each payment by that 60 percent ratio.
At closing the seller receives $8.5 million in cash, from the bank proceeds and the buyer's equity, and recognizes 60 percent of it, or roughly $5.1 million of gain, that year. The $1.5 million carried on the note is not yet a payment. Its embedded gain, 60 percent of $1.5 million, or $900,000, is deferred until the balloon principal is collected in year three. The interest is taxed as ordinary income as received. Because the seller's installment obligations here are well under the $5 million threshold, the Section 453A interest charge on large deferred balances does not apply.
One caution the IRS makes explicit in Publication 537: depreciation recapture is recognized in full in the year of sale and is not spread under the installment method. The deferral works on the remaining capital gain, not on recapture. For most real property placed in service after 1986 and depreciated straight-line, Section 1250 recapture is often minimal, but it should be computed, not assumed away.
Where Does a Carryback Sit in the Capital Stack, and Who Bears the Risk?
A carryback sits directly above common equity and below the senior mortgage, in the same subordinate band as mezzanine and preferred equity. The seller who carries it bears junior risk: in a default, the senior lender is paid first, and the carryback holder recovers only what is left after the first lien is satisfied. That position is the reason the note earns interest.
The order of repayment is the order of who gets hurt in a downturn, a dynamic covered in who wins and who waits in a downturn. A seller carrying paper has traded a clean exit for a stream of payments backed by a junior claim on an asset whose value already moved once. The carryback rate should compensate for that. The seller who prices the note as a favor rather than as subordinate credit is giving away yield and accepting default risk for nothing.
The safeguard is to underwrite the buyer as a lender would: verify the down payment is real, confirm the senior loan's terms through the subordination agreement, record the deed of trust to establish the lien priority, and set a balloon date that gives the buyer a credible path to refinance. Done that way, the carryback is not a concession but a secured, income-producing asset that also closed a sale the seller could not otherwise complete.
Frequently Asked Questions
Is a seller carryback the same as seller financing?
Yes. Seller carryback and seller financing describe the same arrangement, in which the seller extends credit to the buyer and holds a note instead of taking the full price in cash. Carryback is the term used most often when the seller finances only a portion behind a senior lender.
How does the installment method actually save the seller money?
It defers, rather than eliminates, tax. Under IRC Section 453 the seller recognizes capital gain only as principal is collected, so carrying a note pushes the gain on that portion into future years instead of all into the year of sale. Depreciation recapture, per IRS Publication 537, is still recognized up front.
What is the biggest risk to the seller?
Subordination. The carryback holder is behind the senior lender on the same collateral, so in a default the first lien is paid before the seller recovers anything. Price and document the note as junior secured credit, with a recorded deed of trust and a realistic balloon.
Conclusion
A seller carryback is not a fallback for weak buyers. It is a structural answer to a repriced debt market where the bank-to-buyer gap has widened into a chasm. With roughly $875 billion in commercial and multifamily debt maturing in 2026 by the Mortgage Bankers Association's count, that gap is not going away, and the sources that fill it are either expensive institutional capital or a note the seller already has the standing to write. For an operator underwriting acquisitions in a stalled market, the question is not whether carrybacks work. It is whether you are screening for the sellers motivated enough to write one, and pricing the note for the junior risk it carries.