Seller Financing: How It Works When You Buy a Business

Seller financing means the owner lets you pay part of the purchase price over time. Instead of collecting everything at closing, the seller takes a promissory note from you and gets paid back with interest out of the business's cash flow. On small and lower middle market deals it is one of the most common pieces of the capital stack, and one of the most misunderstood.

This guide covers what a seller note is, what the terms usually look like, why owners agree to carry one, how it fits with an SBA 7(a) loan under the rules in force today, and how to raise it with an owner who has never sold a company before. It sits inside our larger guide on how to buy a business off-market, where seller financing is one step in a longer process.

What a seller note is

A seller note is a loan from the seller to the buyer, documented with a promissory note and usually a security agreement. You agree on a principal amount, an interest rate, a repayment schedule and what happens if you miss payments. At closing the seller receives cash for most of the price and the note for the rest.

In almost every deal that also uses a bank or SBA loan, the seller note is subordinated. The bank gets paid first and holds the first lien on the business assets. The seller sits behind it. That ordering is why the terms of a seller note matter so much to your lender, and why a lender will often read the note before it reads anything else you sent.

Seller notes show up in deals of every size, though they carry more weight at the small end. In the IBBA and M&A Source Market Pulse survey for Q2 2026, cash at closing made up the large majority of deal value in every size band from under $500K to $50M, and seller financing was typically the next largest piece, at roughly a tenth of value or less.

Typical terms

Every seller note is negotiated, so treat any "standard" as a starting point. BizBuySell describes sellers traditionally financing anywhere from 10% to a third or more of the price, and its 2025 survey work found a gap between the two sides: buyers were looking for 30-40% seller financing while most sellers were comfortable in the 10-20% range.

The same gap shows up in willingness. In BizBuySell's Q2 2025 Insight Report, 22.8% of sellers said they planned to offer seller financing, while 62.3% of buyers were considering it as part of their acquisition strategy. Most owners do not start the conversation expecting to carry paper. You usually have to make the case.

The points you will negotiate:

• Size: the share of price the seller carries. Bigger notes mean less cash from you and more risk for the seller.
• Interest rate: fixed in most small deals. The IRS can recharacterize part of the principal as interest when a contract's stated interest is too low, measured against the applicable federal rate, so the rate cannot be set arbitrarily close to zero.
• Term and amortization: how long the seller waits to be repaid in full, and whether payments are level, interest-only for a period, or end in a balloon.
• Standby and subordination: whether the seller can receive payments while the senior loan is outstanding. With SBA financing this is set by the SOP, covered below.
• Security and default terms: what the seller can claim if you stop paying, and how much notice you get to cure.
• Offsets: whether you can reduce note payments if a representation in the purchase agreement turns out to be false. Sellers resist this. Buyers should ask for it anyway.

Why owners agree to it

Taxes can be spread over the payment years

A sale with at least one payment arriving after the tax year of the sale is an installment sale in IRS terms. Under the installment method, the seller generally reports only the part of the gain received each year, rather than the whole gain in the year of sale, and reports it on Form 6252 for each year the note is outstanding.

There are limits worth knowing before you pitch this. The installment method does not apply to inventory, depreciation recapture is still reported as ordinary income in the year of sale, and the interest the seller earns is taxed as ordinary income. How much deferral an owner actually gets depends on how the price is allocated across assets. That is a question for the seller's CPA, and you should say so rather than promising a tax result.

It gets the deal done at their price

Many owners care more about the headline number than the timing of the last dollar. A note can close the distance between what a lender will fund and what the owner wants. For a founder who has spent decades building the company, a fair price paid partly over time often beats a lower price paid all at once.

It produces income in retirement

For a retiring owner, a note can work like a pension with interest. This matters most to owners whose wealth is almost entirely tied up in the business. We cover how to approach that seller in more depth in our guide to buying a business from a retiring owner.

Why buyers want it

• Less cash at closing. Every dollar the seller carries is a dollar you do not raise from investors or your own savings.
• The seller stays invested in the outcome. An owner who is owed money has a reason to make the transition work, introduce you to key customers and answer the phone in month seven.
• It tests the seller's confidence. An owner who refuses any note on a business they describe as stable is telling you something. Lenders read it the same way: BizBuySell's Q2 2025 report notes that lenders are often more favorable toward deals where the seller contributes financing as a sign of confidence.
• Better terms than a bank. Sellers can agree to interest-only periods, deferred starts or flexible amortization that no bank will offer.

The honest counterweight: a seller note is still debt. It adds to your fixed payments, and if the business has a bad year you owe the seller anyway. Underwrite it as seriously as the bank loan.

How seller notes work with an SBA 7(a) loan

This is the part that changed most recently, and the part most buyers still get wrong. Two versions of the SBA rulebook matter.

SOP 50 10 8 (effective June 1, 2025)

SOP 50 10 8 took effect on June 1, 2025 and requires at least a 10% equity injection from the buyer on a change of ownership. A seller note can count toward that injection only if it is on full standby, with no principal or interest payments, for the entire term of the SBA loan, and it may not make up more than half of the required injection. The lender documents this with a standby agreement on SBA Form 155.

In plain numbers: on a 10% injection, the seller note can cover at most 5% of the project, and you bring at least the other 5% in cash. Under the prior rules, seller notes could be used to meet the injection on looser terms, so a structure that qualified before mid-2025 may not qualify now. As BizBuySell put it, a note used this way effectively becomes a zero-interest, unsecured loan from the seller for the life of the SBA loan, which is often a 10-year term.

Under SOP 50 10 8, a seller who kept a stake had to personally guarantee the loan for two years. Under 8.1, a seller in an initial acquisition cannot stay on as a stockholder at all, so a rollover plus a note does not fit an SBA-financed purchase. Plan the note on its own.

SOP 50 10 8.1 (effective October 1, 2026)

The SBA issued SOP 50 10 8.1 on August 14, 2026, effective October 1, 2026, applying to applications that receive an SBA loan number on or after that date. The 10% minimum injection stays. What changed for seller notes:

• Qualifying seller notes, third-party notes and standby debt are now counted together, and combined they cannot exceed half of the minimum injection.
• The debt service coverage requirement for most change-of-ownership deals rises from 1.15x to 1.25x, measured on historical cash flow.
• A seller note that is being paid during the SBA loan term counts against that coverage ratio. Only a note on full standby for the life of the loan stays out of the calculation.

The practical result is two kinds of seller note in an SBA deal. One is the standby note that counts as equity, capped at half the injection and silent for the life of the loan. The other is a note on top of your full cash injection, which can be paid on its own schedule if the lender agrees, because BizBuySell notes the repayment restrictions generally do not apply when the note is in addition to the down payment rather than part of it. That second note still has to fit inside 1.25x coverage.

Lenders often add requirements beyond the SBA minimums, and these rules have now changed twice in about 16 months. Confirm the current terms with your SBA lender and your attorney before you put a structure in a letter of intent.

A sample structure

The table below is an illustrative example with made-up numbers, so use it to see the mechanics and get real terms from your lender. It assumes a $2.5M purchase price and, for simplicity, that the price equals total project cost (in a real SBA deal, closing costs and working capital are added to the project).

The SBA column shows the trade the seller makes: more cash at closing, but the standby portion earns nothing paid out until the SBA loan is gone. The non-SBA column, more typical of an independent sponsor or search fund with outside equity, puts more of the price on the note but pays the seller along the way. Neither is better in the abstract. Which one an owner prefers is a question about their plans for the money, and you only find that out by asking.

How to propose it to an owner who has never heard of it

Most owners you reach through direct outreach have never sold a company and have no broker coaching them. That cuts both ways. They have no anchor telling them seller financing is normal, and no one telling them to refuse it either.

BizBuySell quotes one broker warning buyers not to open with "will the seller finance the purchase," because the answer is no and you lose credibility. That advice holds off-market too. A sequence that works:

• Agree on value first. Talk about the business, the financials and a price range before you talk about structure. An owner who feels the price is fair is far more open to how it gets paid.
• Show your financing. Arrive with proof of equity and, if you are using SBA, a lender who has seen the deal. A note request from a buyer with no financing sounds like a buyer with no money.
• Explain it in their terms. Describe it as income over several years with interest on the balance, paid by a buyer who wants them involved in the handover. Mention that installment treatment may spread the tax, then send them to their CPA to confirm it.
• Make the risk concrete and limited. Offer a security interest, a personal guarantee if appropriate, reporting rights and a short cure period. Owners say no to vague risk far more often than to defined risk.
• Put it in the LOI. Note size, rate, term, standby and subordination all belong in the letter of intent. Surprises at the purchase agreement stage kill deals.

This is one of the places off-market deals differ from brokered ones. A broker running a process will usually push for maximum cash at close, since that is the cleanest outcome for the seller. A direct conversation with the owner leaves room to design a structure around what that owner actually needs, which is a large part of why we think the full process of buying a business should start with sourcing your own conversations.

Risks for both sides

For the seller

• They are behind the bank. If the business fails, the senior lender is repaid first and the note may recover little.
• A full-standby note under SBA rules pays nothing for the life of the SBA loan, which is a long wait for a retiree.
• A seller cannot keep equity in an SBA-financed initial acquisition, so a note is often the only way the seller shares in the deal after closing.
• Their outcome now depends on a buyer they have known for a few months.

For the buyer

• Another fixed payment, owed in good years and bad.
• A creditor who used to own the company and may have strong views on how you run it. Covenant and default terms deserve real attention.
• A note that is papered loosely can fail to qualify as equity and still count against your coverage ratio, which hurts the SBA application twice.
• Offsets and cure rights you did not negotiate are hard to add later.

None of this is legal, tax or financing advice. Before you sign anything, review the structure with your lender, an M&A attorney and a CPA, and encourage the seller to do the same with their own advisors.

The bottom line

Seller financing is still one of the most useful tools in a small acquisition, though the SBA rules now limit how much of it can stand in for your own cash. The buyers who use it well raise it once value is agreed and write the specific terms into the LOI. And they get the most room to structure it in conversations where no broker is pushing for an all-cash close.

Those conversations come from reaching owners directly. If you want owners in your buy box replying to you, book a call with our team and we will walk through how a direct-to-owner campaign would run for your criteria.

Further reading: the largest M&A deals in history, including every major 2025 and 2026 deal; the top PE firms in 2026, including the top lower middle market firms; and the best deal origination services, compared side by side.