Seller note: What it is and how it works in a business sale

From my experience working with sellers across the country, roughly 60 to 75 percent of small-business sales under $5 million include some form of seller-carried paper, typically covering 10 to 25 percent of the purchase price.

This piece walks through what a seller note actually is, how it functions inside a transaction, what the standard terms look like, and what your options are once the note is on your books.

What is a seller note

A seller note (often spelled sellers note in casual usage) is a promissory note the buyer of a business signs in favor of the seller as part of the purchase price. The seller becomes a lender for that portion of the deal, and the buyer makes monthly payments over a defined term.

Plain-language definition

What is a seller note in the simplest terms? It is a loan from the seller to the buyer that the buyer uses to fund part of the business acquisition. The seller carries the debt on their personal balance sheet in exchange for receiving the full asking price over time, plus interest. The note is documented separately from the purchase agreement and stands on its own as a legal instrument.

Where the term comes up

You will hear the same instrument called a seller carry-back note, vendor financing, an acquisition note, or simply owner-financed paper. The legal substance is identical regardless of the label. In SBA-financed transactions the seller note is almost always required as part of the equity injection, which is why the term appears constantly in 7(a) acquisition closings.

Common misconceptions

A surefire way to get the structure wrong is to treat the seller note like a casual handshake side-letter between two parties. It is not. The note is real debt, recorded on the buyer’s books, secured by the assets of the business, and enforceable through the same legal channels as bank debt. That being said, the terms are negotiated between two private parties, which means the document can be far more flexible than anything a regulated lender would write.

How a seller note works in practice

The note moves through three distinct phases over its life: origination at closing, monthly servicing, and either payoff or default workout. Each phase has its own paperwork and its own risk profile.

Origination at closing

At the closing table, the buyer signs the promissory note, the security agreement, and any personal guarantees the seller has demanded. The seller assigns the business assets and walks away with a portion of the purchase price in cash and the balance documented as a receivable. The note is typically recorded with the state UCC office on the same day in order to perfect the seller’s lien position on the business collateral.

Monthly payment mechanics

The buyer makes monthly principal-and-interest payments to the seller, usually through ACH directly into the seller’s account or through a third-party loan servicer. Payments are calculated on a standard amortization schedule, often with a balloon payment at year 5, 7, or 10 even if the amortization stretches 15 or 20 years. Following note servicing best practices from day one protects both parties when life happens.

Default and workout

When the buyer misses a payment, the seller has a cure window (commonly 10 to 30 days) before the note technically defaults. After cure expiration, the seller can accelerate the note (demand the full balance), file to enforce the security interest, and pursue any personal guarantees. In order to avoid this outcome most sellers prefer to negotiate a workout, which often means a temporary interest-only period, a maturity extension, or a partial principal reset.

Standard terms and documentation

Every seller note has the same skeleton of terms even though the numbers move around based on industry, deal size, and buyer credit. Understanding the standard fields helps both sellers and buyers negotiate the document in good faith.

Promissory note provisions

The core of the document is the promissory note itself. Three numbers inside that note do most of the work in determining the value of the paper later, and they deserve careful attention at the negotiating table.

Interest rate

Seller notes carry interest rates between 6 and 10 percent fixed, with 7 to 8 percent the most common band today. SBA-tied notes have a cap (currently the SBA-published market rate). Higher rates protect the seller against inflation but increase buyer default risk, so a balanced rate is in everyone’s interest.

Term and amortization

Amortization typically runs 5 to 15 years. Longer amortizations lower the monthly payment, which protects buyer cash flow, but they also extend the seller’s exposure. Most carry-back paper amortizes over 7 to 10 years with no prepayment penalty.

Balloon payment

A balloon at year 5 or 7 is common even on a 15-year amortization. The buyer typically refinances the balloon into a conventional loan once the business has 3 to 5 years of post-acquisition financials. The balloon mechanism caps the seller’s exposure without crushing the buyer with a high monthly payment.

Security and collateral

The seller protects the receivable by securing it against the assets of the business and, in most cases, against the personal guarantees of the buyer. Three layers of security are typical.

UCC-1 filings

A UCC-1 financing statement filed with the buyer’s home state secretary of state perfects the seller’s lien on the business assets (inventory, equipment, accounts receivable, intangibles). The seller’s lien position depends on whether a bank or SBA lender filed first.

Personal guarantees

The buyer (and often the buyer’s spouse) signs a personal guarantee covering the note balance. This gives the seller recourse beyond the business assets if the company fails and the collateral is worth less than the remaining balance.

Cross-collateralization

On larger deals the seller sometimes negotiates a second-position lien against real estate the buyer owns outside the business. Cross-collateralization is uncommon on sub-$1M deals but appears regularly on transactions above $2M where the buyer has meaningful personal assets.

Why sellers agree to carry paper

Sellers rarely want to carry paper for the love of carrying paper. They do it because the alternative is either no deal or a lower cash price, and the math usually favors the carry.

Closing the buyer funding gap

SBA 7(a) acquisition loans cap at 90 percent of the deal value, which leaves at least 10 percent for the buyer to source elsewhere. Most buyers cannot bring a full 10 percent of equity in cash, so the seller bridges the gap with a subordinated note. Without the seller carry the deal does not close.

Stretching tax liability

Installment sale treatment under IRS Section 453 allows the seller to recognize capital gain pro-rata as principal payments arrive rather than all in the closing year. On a $2M sale at a 23.8 percent federal capital gains rate, spreading the gain across 7 years can save the seller meaningful tax dollars by keeping each year’s income inside a lower bracket. The acquisition note structure makes that tax treatment possible.

Risks and how to mitigate them

The seller’s primary risk is buyer default, but the risk is manageable with the right documentation and the right counterparty selection up front.

Buyer default risk

Default rates on seller-carried business paper run 8 to 15 percent over the life of the note, depending on industry and buyer experience. The mitigations are well-understood: meaningful buyer cash equity at closing, personal guarantees, proper UCC perfection, and ongoing monitoring of the buyer’s financial reporting. Tracking the buyer’s tax returns annually is the single highest-value monitoring habit.

Subordination to bank debt

When an SBA loan or conventional bank loan is in first position, the seller note sits in second position. Subordinated seller notes carry a standby period (typically 24 months) during which the seller cannot accept payments if the senior lender objects.

Knowing the difference between performing vs non-performing business notes matters because subordinated paper is more sensitive to senior-lender behavior than first-lien paper. A working knowledge of business note investing helps any seller understand how the secondary market prices that subordination risk.

Selling the note for cash

One option many sellers overlook is selling the note itself on the secondary market once it has 12 to 24 months of clean payment history. The seller takes a discount to face value in exchange for an immediate lump sum, which removes the carrying risk and frees up the capital for other uses.

Pricing drivers and process

Seller note pricing on the secondary market depends on the buyer’s credit, the business’s financial performance, the lien position, the seasoning, and the rate. A clean 8 percent first-position note seasoned 18 months on a profitable business typically trades at 80 to 92 cents on the dollar.

Selling a seller-financed business note is straightforward when the documentation package is complete, while selling a note secured by business assets without clean UCC filings or a current asset list takes longer and prices lower. Proper seller note valuation early in the process saves weeks of back-and-forth later.

Most sellers work with a business note broker or an institutional buyer directly. The fee structure varies, but you can read more about how to broker business notes in our cluster piece for sellers who want to understand the brokerage workflow before they sit down at the table.

A seller note is one of the most useful instruments in private-business finance when it is structured carefully and serviced properly. The paper protects the seller’s price, makes the deal financeable for the buyer, and (in many cases) produces a better total return than an all-cash exit would once the interest income is counted. Good luck on your transaction, and treat the note documentation with the same care you would give any other major asset on your balance sheet.