What Is Seller Financing and How Does It Work?

You can see why it feels like a discount. The seller leans back in his chair and says he'll carry some paper, and the whole deal loosens up: less cash at closing, numbers that finally pencil.

The note does tell you something real: the seller will stake part of his own price on the business surviving without him. It also costs you something real, a second loan payment fighting your senior debt for the same monthly cash. And a deal that only pencils because the seller's carrying it can still be a job dressed up as an asset.

What seller financing is

Seller financing is when the seller lends you part of the purchase price and you repay it over time, with interest. Instead of paying the full price at closing, the seller "carries paper," a promissory note repaid out of the business's future cash flow, usually over three to seven years.

So it's a loan, and the lender is the guy walking out the door. That changes the relationship for as long as the note runs.

It's one piece of the bigger first-time buyer's guide to buying a small business, and it's rarely the whole financing plan. Most acquisitions stack a seller note on top of a senior loan and a cash down payment.

A common structure: you bring 10% in cash, an SBA loan covers 70% to 80%, and the seller carries the remaining 10% to 20% as a note. The note's almost always subordnate, so the senior lender gets paid first and the seller waits behind them.

The mechanics, and where they hit your cash

A seller note has the same parts as any loan: principal, interest rate, term, payment schedule, and security. The difference is that you negotiate every one of them across the table from the seller, with no bank underwriting model setting them for you.

Principal is the slice of the price he agrees to carry. On a $600,000 deal, a 15% seller note is $90,000 you don't pay at closing.

The rate's negotiated too, and it usually sits a few points above or below your senior loan. For reference, SBA 7(a) acquisition loans ran an FY2025 median rate near 9.50%, mostly variable, so that's the neighborhood.

The term is usually three to seven years, shorter than the senior loan. Payments are monthly principal and interest, and they land on the same cash flow that's already servicing the SBA debt.

Security is the part buyers skim and shouldn't. The seller can ask for a personal guarantee, a lien on business assets, or a claim on the stock, so a default isn't a clean walk-away. Once you're structuring a real offer, the full set of seller note terms and structures is worth reading on its own.

What the note tells you, and what it can't

Start with the incentive, because that's the actual signal. A seller who carries 15% of his own price for five years has turned part of his sale proceeds into a bet that the business survives the handoff.

For the length of the note, the guy who sold you the asset is also a creditor whose repayment depends on the same cash flow you're about to inherit. A seller who demands all cash at closing has moved every dollar of that risk onto you, and one carrying paper has put his own money behind his claims.

Read a refusal the same way. A seller who won't hold any note might just want liquidity, or he might know something about next year the listing doesn't mention. You can't tell which from the refusal alone, so take the question into diligence and ask it plainly.

Now read the carry for exactly what it proves. Willingness to hold a note proves the seller thinks the business will pay him. It doesn't prove the earnings are verified, and it doesn't prove the business runs without him.

Those are different claims, and blurring them is how buyers talk themselves into weak deals.

And think about what most sellers are working from. 86% of small business owners have no professional valuation or only a rough estimate, so the price the note sits on is usually the seller's own number, and his confidence can rest on an inflated one.

There's a trap the note can't fix, either. If the business runs through the seller, you're still buying that problem. The financing's friendlier, the asset's the same, and this is exactly where buying a job hides inside what looks like a clean deal.

The useful move is to use the signal without overreading it. A seller carrying 20% for five years is saying more than one carrying 5% for one year. Either way, the note tells you where to point your diligence. What you find there is still up to the books.

Reading the terms like a stress test

Read every seller note as a cash-flow stress test before you read it as a convenience. Making the payment in a normal year proves little. Making it when revenue dips is the test.

Run the test the rest of the acquisition financing picture depends on. Knock year-one revenue down 20% on paper, subtract the cost of replacing the owner's role, and see whether both the senior loan and the seller note still get paid.

Each of these terms decides who eats the loss if the cash disappoints:

• Standby and subordination: SBA-backed deals often require the seller note on full standby, meaning no payments to the seller for a set period. That protects your cash in the shaky early years and keeps the seller carrying real risk alongside you, which is the alignment you want.
• Personal guarantee: if the note's personally guaranteed, a business default reaches your personal assets. This is the term that moves the loss off the business and onto your own balance sheet.
• Default and acceleration: acceleration lets the seller demand the full balance the moment you miss terms, which can force a sale or a refinance at the worst possible time.
• Interest and balloon: a low rate with a balloon payment in year three looks affordable until the balloon shows up and you have to refinance on whatever terms the market's offering that quarter.

Match the note to the senior debt. It usually sits behind an SBA 7(a) loan and its own qualifying requirements, and those two payments come out of one bank account.

One more number anchors it. SBA 7(a) acquisition loans run a median term near 120 months, so the senior debt stretches a decade while a three-year seller note loads up the early years. Those are the same years you're still learning the business and paying to replace the owner, which is where buyers get squeezed.

So before you sign, rerun that 20% revenue drop with both payments in it. If the structure only works when revenue holds steady, go back and negotiate the term, the standby, or the guarantee until it survives the bad year.

FAQ

How does seller financing work in a small business sale?

Seller financing works as a loan from the seller to the buyer for part of the purchase price, repaid with interest over a fixed term. The buyer signs a promissory note, makes monthly payments from the business's cash flow, and the seller usually sits behind the senior lender in repayment priority.

What is a typical seller financing structure?

A typical seller note covers 10% to 20% of the purchase price, runs three to seven years, and carries interest in the range of the buyer's senior loan. It commonly stacks on top of an SBA loan and a cash down payment, and it is usually subordinate to the bank.

Is seller financing a good idea for a buyer?

Seller financing is useful when it lowers the cash needed and keeps the seller invested in a clean handoff. It becomes a problem when the combined debt payments cannot survive a revenue drop, so the deciding factor is whether the cash flow covers both loans under stress, not just on a good year.

Judging a seller note means knowing what the business is actually worth, which is the job Keystone is being built for. It's closed right now while the build finishes, and the waitlist is at https://app.trykeystone.io.

When the diagnostic opens, you'll answer 18 questions in about four minutes and get three scores and a value range with the most likely figure locked, calibrated against 10 years of BizBuySell Insight Reports and 1.6M+ SBA 7(a) loan records. It will show whether the price the note is built on holds up, and whether the business runs without the seller.