This guide is educational and is not a substitute for advice from a qualified attorney, accountant, or lender familiar with your transaction.

Most people who look at buying a business assume the money question has one answer: how much cash do I need, and where does the rest come from. They picture a bank on one side and their savings on the other.

The reality is that the seller is frequently part of the financing. A seller note appears in a great many small business acquisitions, particularly when bank financing and buyer equity together do not reach the full purchase price. It is not an exception or a fallback. It is a standard tool, and if you are evaluating a business without understanding how the seller note works, you are reading only part of the deal.

This matters especially for experienced professionals. You have operating judgment, a track record of running things, and a reasonable but finite amount of capital. Seller financing is the mechanism that lets the first two compensate for the third. It is also the part of the transaction where the terms carry more weight than the price. Two deals at the same stated number can produce very different outcomes depending on how the note is written, which is why understanding what a business is actually worth and understanding how you will pay for it are two halves of the same question.

This article covers how a seller note is structured, where it sits relative to your other debt, what the current SBA rules require, and the terms worth negotiating that most buyers never raise.

What a Seller Note Actually Is

A seller note is a loan from the person selling you the business. You pay part of the purchase price at closing and the remainder over time, with interest, under a written promissory note.

That is the whole concept. The complexity is in the terms.

Why sellers agree to it. Three common reasons.

It closes the deal. The pool of buyers who can pay all cash for a small business is small. Carrying a note widens that pool considerably, and a seller who has been listed for eight months is thinking about that.

It can improve the total price. A seller who wants their asking number may get it by carrying paper rather than by finding a buyer who will pay it in cash.

It may affect the timing of their tax liability. An installment structure can allow part of an eligible gain to be recognized as principal payments are received rather than all at once. Whether that actually helps depends on entity structure, purchase price allocation, depreciation recapture, and which assets are being sold. Interest is reported separately as ordinary income. This is a conversation for the seller’s CPA, not for you, but it explains why some sellers raise the idea before you do.

Why it matters to you beyond the cash. A seller who carries a note has a financial interest in your success for as long as the note is outstanding. That is not sentiment, it is structure, and it tends to produce a more engaged transition and more responsive phone calls in month four.

It does not, by itself, make anything the seller told you during diligence more reliable. Aligned incentives are not a substitute for verification. What protects you against a representation that turns out to be false is the diligence you performed and the remedies you negotiated, both of which are covered below.

If the seller will not carry anything. It is worth understanding why, but a refusal is not automatically a warning about the business. It may reflect retirement income needs, estate planning, an obligation to pay off existing debt at closing, a competing all-cash offer, or a seller who simply does not want to become a lender after the sale. Ask whether the objection is financial, tax-related, personal, or about the buyer or the future of the business. The answer tells you something either way.

The Five Economic Terms That Define the Note

Every seller note comes down to five economic variables. Get these on paper early, because a handshake on “the seller will carry some” is not an agreement. The legal provisions that govern what happens when things go wrong are separate, and they are covered further down.

Amount. Commonly a minority share of the purchase price. Ranges vary widely with the deal, the industry, and whether a bank is involved. A seller carrying half or more of the price is unusual and warrants understanding why before you celebrate.

Interest rate. Seller note rates vary substantially with risk, collateral, term, and negotiating leverage. There is no universal market rate, and a seller note is not automatically cheaper than senior debt. Compare the actual lender quote with the proposed note rate rather than relying on a general market estimate.

Do not set the rate at zero, or at some token number, without your accountant’s input. If a note does not provide adequate stated interest, federal tax rules may recharacterize part of the stated principal as unstated interest or original issue discount. That changes both parties’ tax reporting and can affect the reported selling price and your basis. Have the CPA confirm the applicable rate before the note is signed. It is a small technical point that quietly ruins goodwill when it surfaces later.

Term. Typically several years. Shorter terms mean higher payments and more strain on cash flow. Longer terms are easier to service but sellers resist them. If the note is being counted toward an SBA equity injection, the standby rules discussed below may effectively determine when payments can begin.

Amortization and payment structure. This is where deals go wrong. A note can be fully amortizing, meaning level payments that retire the balance by the end of the term. It can be interest only for a period. It can carry a balloon, meaning smaller payments followed by a large lump sum at the end. Or it can be on full standby, meaning no payments at all for a defined period.

Security. What backs the note if you cannot pay. Sometimes nothing. Sometimes a subordinated security interest in business assets. Sometimes a personal guarantee from you. These are not equivalent, and the difference between them is the difference between a bad year and a catastrophe.

Before you agree to any structure, run the payment against the business’s actual cash flow. The earnings figure in a listing is rarely the figure your lender will use, so normalize it first with the SDE Adjustment Worksheet, then model the combined debt service in the Business Buyer’s Calculator.

Where the Note Sits: Subordination and Why It Matters

If your deal includes a senior acquisition loan, and for many first-time buyers that means an SBA 7(a) loan, the seller note will usually be subordinated to it. Subordination means the senior lender gets paid first. Not just in normal months, but specifically in the months when there is not enough money for everyone.

Read that again, because buyers routinely nod through this term without absorbing it. Subordination is not a formality. It is the entire architecture of who absorbs a bad year.

In practice, a subordination or standby agreement will typically prohibit payments on the seller note while you are in default on the senior loan, prohibit the seller from taking action against you or the business assets without the senior lender’s consent, and place the seller’s lien rights behind the lender’s in any shared collateral.

The practical effect is that a seller who signs one of these has accepted a genuinely weaker position than they may realize. Many sellers do not read it closely, and some of the hardest moments in a transaction arrive when the seller’s attorney explains what they have agreed to. If you have reason to think the seller does not understand this, raise it early. A deal that dies at the subordination agreement in week ten is a far worse outcome than a difficult conversation in week two.

The SBA Rule Most Articles Still Get Wrong

A large share of what you will find online about seller notes and SBA loans describes rules that no longer apply. This section is worth reading twice.

The SBA’s current Standard Operating Procedure for 7(a) lending, SOP 50 10 8, took effect June 1, 2025. It changed how seller notes interact with the equity injection requirement, and it changed it significantly.

What the Rules Currently Require

A 7(a) loan for a complete change of ownership requires a minimum equity injection of at least 10 percent. That percentage is calculated on total project cost, not on the purchase price. If the loan also funds working capital, eligible fees, or other acquisition costs, the required injection will be larger than 10 percent of the price you negotiated. Confirm the project cost figure with your lender before you build an offer around it.

A seller note can count toward that required injection, but only under two conditions applied together:

The note must be on full standby for the entire term of the SBA loan. Full standby means no principal and no interest payments during that period. Not for the first two years. Not until the senior loan is seasoned. For the life of the loan, which on a goodwill-heavy acquisition commonly means ten years. Interest may accrue and be added to the standby balance, to be amortized after the SBA loan is repaid.

The note may not exceed 50 percent of the required equity injection. The remainder must come from an acceptable non-seller equity source, typically the buyer’s own funds. Confirm what your lender will accept before structuring the offer.

Why this section matters. Prior guidance under SOP 50 10 7.1 allowed qualifying seller debt to remain on full or partial standby for the first 24 months of the 7(a) loan, after which payments could begin. A great deal of currently published material, including pages that rank well and carry recent dates, still describes that rule. It is out of date. If you build a deal model on it, your lender will correct you late in the process, at the point where correcting it is expensive.

Two Illustrative Structures

Both assume a $1,000,000 purchase price with no additional project costs, so purchase price and total project cost are both $1,000,000. The required equity injection is therefore $100,000.

Structure B is the one many sellers decline. Many sellers will consider ten years without payments commercially unattractive. Expect resistance, and expect it to be reasonable resistance.

The structural distinction worth knowing. The full-standby requirement attaches to the note being used to satisfy the equity injection. A separate seller note that is not counted toward the injection can still sit in the capital stack on subordinated terms.

To be precise about what that does and does not accomplish: a second subordinated note may reduce the amount that must be funded by the senior loan, or the amount paid to the seller at closing. It does not reduce the minimum non-seller portion of the SBA equity injection below the applicable floor. Lenders also structure this differently, and some decline a two-note structure outright.

Whether it works in your deal is a question for your lender and your attorney. It is not a question to answer from an article, including this one. But knowing the distinction exists lets you ask a far better question than most first-time buyers ask.

Structure	Non-seller contribution	Seller note treatment	Payments to seller during SBA loan term
Conventional seller note	Full required injection	Subordinated debt, not credited toward the injection	Potentially, subject to lender-approved terms
Equity-counting standby note	Half the required injection	Full standby, credited up to half the required injection	None
Two-note structure	At least the required non-seller portion	Only the full-standby note is credited, up to half the required injection	Potentially on the non-standby note, subject to lender approval

Illustrative only. Confirm any structure with your lender before making an offer.

What to Negotiate Beyond the Rate

Nearly every buyer negotiates the interest rate. Very few negotiate the terms below, and in our view the terms below are worth more.

Ask for a Right of Offset

This is the provision we would fight hardest for, and one that first-time buyers frequently overlook.

An offset or recoupment right lets you reduce your note payments by the amount of a valid claim against the seller. Suppose the seller represented that a major customer contract runs three more years, and two months after closing you learn it terminates in ninety days.

Without an offset right, you may have to pursue the claim separately through negotiation, arbitration, or litigation while continuing to make scheduled note payments to the person you are pursuing. With a properly drafted offset right, you may be entitled to withhold or reduce note payments up to the amount of the claim, subject to the notice, documentation, and dispute procedures written into the agreement.

That is a fundamentally different negotiating position. It is also not a standalone provision. An offset mechanism has to be coordinated with the purchase agreement’s indemnification terms, including any baskets, caps, and survival periods, with the promissory note itself, and with any senior lender restrictions in the subordination or standby agreement. Ask acquisition counsel whether an offset or recoupment mechanism is appropriate in your structure and how to align it with the rest of the documents.

Sellers push back. The usual compromise limits offset to claims that are documented, noticed within a defined window, and capped at some portion of the note balance. A limited offset right is considerably better than none.

The representations, risks, and unresolved issues identified during your due diligence should help determine how the offset and indemnification provisions are written. Diligence surfaces the problem before closing. The offset is what protects you when something surfaces after. That is why the two should be negotiated together rather than sequentially.

Tie Transition Obligations to the Note

Most purchase agreements include a transition period where the seller stays on to hand off relationships and knowledge. Many of those commitments are weak in practice, because once the seller has been paid there is little to compel attendance.

Defining the obligation specifically, with hours, duration, and deliverables, and making failure to perform a defined breach with a defined remedy, changes the incentives materially.

Tie the Non-Compete to the Note

Same logic. A restrictive covenant linked to defined note remedies gives you more practical leverage than a later damages claim would. It is not self-executing, since a seller who disputes that a breach occurred can still force the question into arbitration or court, and enforceability varies considerably by state. But leverage that costs nothing to negotiate is worth having.

Prepayment Without Penalty

You want the right to retire the note early without a fee. If the business outperforms, or you refinance, you should not be penalized for paying down debt. Sellers occasionally resist because they were counting on the interest income. It is usually negotiable.

Cure Periods and What Counts as Default

A note that treats any late payment as immediate default, with acceleration of the full balance, is a loaded weapon pointed at your business during its most fragile period. Ask for a cure period after written notice, and ask that acceleration require a material and uncured default rather than any technical breach.

Remedies on Default

Understand what the seller can actually do. A seller generally cannot simply reclaim the company. Where the seller holds a subordinated security interest, remedies run against pledged assets after an uncured default, subject to the senior lender’s rights, perfected lien priority, applicable UCC procedure, and sometimes court action. Ask your attorney to walk you through the realistic sequence rather than accepting a summary.

The Scope of Your Personal Guarantee

If you are personally guaranteeing the seller note on top of the SBA loan, understand the exposure. Ask whether the guarantee can be limited, whether it burns off after a period of performance, and whether it is capped.

None of these are exotic requests. They are standard commercial terms that appear in negotiated notes routinely. They go unrequested mainly because first-time buyers do not know to raise them, and the seller’s attorney has no obligation to volunteer them.

What the Seller Is Actually Worried About

Negotiating goes better when you understand the other side’s real concern, which is usually not the one they state.

A seller carrying a note has one dominant fear: that you will run the business into the ground and leave them holding paper on a company worth less than when they handed it over. Everything else is secondary.

That fear responds to evidence, not reassurance. Three things address it.

Your operating record. This is where experienced professionals hold a genuine advantage over buyers with stronger balance sheets but less operating experience. Two decades of running operations, managing people, and reading a P&L is exactly the evidence a nervous seller needs. Present it deliberately. Do not assume your resume speaks for itself.

A specific plan for the first hundred days. Sellers worry about disruption to the things they built. A buyer who can describe how they intend to handle the key accounts, the long-tenured employees, and the vendor relationships is reassuring in a way that generic enthusiasm is not.

Willingness to be transparent after closing. Offering periodic financial reporting while the note is outstanding costs you very little and addresses the fear directly. It also signals that you are not planning anything you would need to hide.

There is a fourth item worth naming honestly. Some seller reluctance is not about you. It is about a person who spent twenty years building something and is not entirely ready to stop. That is worth recognizing and respecting rather than negotiating against.

Three Structures That Fail

The Balloon Nobody Stress Tested

A note with low payments for several years and a large lump sum at the end looks manageable in the model. The assumption inside it is that you will refinance the balloon or that the business will have grown enough to absorb it. Both may be true. Neither is guaranteed, and the balloon comes due whether or not the business had a good fifth year.

If a structure only works when things go well, it is not a structure, it is a wager. Run the balloon against a flat revenue scenario in the Business Buyer’s Calculator before you accept one.

The Note With No Offset Right

A buyer closes, learns within a quarter that a representation was materially false, and finds the only remedy is a separate claim against the seller. Meanwhile the note payments continue on schedule. This can be expensive, and it is addressed in drafting rather than after closing.

The Full Standby the Seller Did Not Understand

The deal is agreed. The seller has verbally accepted carrying a note toward the buyer’s equity injection. Then the lender’s documents arrive and the seller learns that full standby means no payments for the life of the loan. They refuse. The deal restructures or dies, months in, with diligence and legal costs already spent. If your structure depends on a standby note, confirm in writing and early that the seller understands what standby means.

Where the Attorney and the CPA Come In

This is a place to spend money.

Seller notes involve a promissory note, usually a security agreement, often a UCC-1 filing, and a subordination or standby agreement with the senior lender. Those documents interact, and a defect in one can undermine the others.

Costs vary substantially with deal size, complexity, location, and scope. Get a written engagement letter that states plainly whether the fee covers only the seller note documents or the full acquisition, including the purchase agreement, entity formation, diligence support, lender coordination, and closing. Scope misunderstandings are a common source of surprise here.

Use an attorney who has done business acquisitions specifically. General business counsel is not the same thing, and the offset, subordination, and remedy provisions discussed above are exactly where transactional experience shows.

Your CPA should review the structure before you sign: for the stated interest question, for how interest deductions affect your projections, and for how the structure interacts with purchase price allocation.

For the broader picture of what an acquisition actually costs beyond the purchase price, see what it takes to buy a small business.