If you're selling a small business, chances are you won't walk away from the closing table with a single check for the full price. Many small-business sales are paid out over time, not all at once — through a note the seller carries, a chunk of the price tied to future performance, or both. That's normal, and it isn't a sign the deal is weak. But it does mean you're taking on risk after you've handed over the keys, so it matters a great deal how that deferred money is documented.
Why sellers often don't get 100% at closing
A few forces push many small-business deals toward some form of deferred payment:
The buyer can't finance the whole price. Buyers using an SBA-backed loan or a bank loan often can't borrow the full purchase price, and the lender may specifically require the seller to carry part of it — that's seller financing.
Buyer and seller disagree on value. If the seller believes the business will keep growing and the buyer is more skeptical, an earn-out lets both sides be "right" — the seller gets paid more if the optimistic case plays out.
It signals confidence. A seller willing to hold a note, or accept a contingent piece of the price, is telling the buyer (and the buyer's lender) that they believe the business will keep performing without them. Buyers and lenders often read a seller who insists on all cash as less confident in what happens after they walk away — fairly or not.
Both tools — seller notes and earn-outs — solve real problems. They also both mean part of your payday now depends on someone else running the business well, or at all. That's the thread to watch through everything below.
Seller financing: you become a lender
In seller financing, you take back a promissory note for part of the price instead of cash. The buyer pays you over time, usually with interest, under terms you negotiate as part of the sale. It's common in small-business sales — many buyers simply can't get a bank to lend the full price, and a seller note fills the gap.
Once you sign that note, you're no longer just the seller. You're a creditor, functionally in the same position as a bank that lent money to a stranger — except your collateral is often the very business you just sold. Protect that position the same way a bank would.
What to build into a seller note
A personal guarantee from the buyer. Without one, you can generally look only to the business (or the buyer's entity) if the note goes unpaid — and a struggling business is a weak source of recovery. A personal guarantee lets you pursue the buyer's personal assets too. (This is the same reason a personal guarantee defeats a buyer's own liability shield — it cuts both ways, and it's exactly why buyers resist giving one.)
Security in the assets sold. Take a security interest in the business assets you sold — equipment, inventory, receivables, sometimes the ownership interests themselves — and make sure it's properly perfected, which for most business personal property means filing a UCC-1 financing statement. Every state has adopted a version of UCC Article 9, but the filing office, fees, and mechanics are set by state law and aren't identical everywhere, so this is a step to have handled by an attorney in the right state rather than assumed. An unsecured note leaves you standing in line behind everyone else the buyer owes.
Adequate stated interest. Don't paper a note with little or no interest thinking you're doing the buyer a favor. If an installment sale contract doesn't provide for adequate stated interest, the IRS can recharacterize part of what you called principal as interest — which is taxed to you as ordinary income rather than as capital gain. The rate that governs this test is tied to an applicable federal rate that changes, so have your CPA set the interest before you sign, not after.
Clear default terms. Spell out exactly what counts as a default (missed payment, lapsed insurance, failure to pay other creditors), how much notice and cure time the buyer gets, and what happens next — acceleration of the full balance, your right to enforce your security interest, and so on.
A defined path to reacquire the business. Many seller notes give the seller a right to step back in — through foreclosure on the collateral or a negotiated reacquisition — if the buyer defaults and can't cure. Decide up front, not in a crisis, how that would actually work.
Have a business attorney draft or review the note, the security agreement, and the guarantee together — they need to work as one package, not as separate documents that don't quite line up.
If the deal involves an SBA loan, the SBA's rules control your note
When the buyer is using an SBA-guaranteed loan to fund the purchase, the SBA imposes its own requirements on any seller note used as part of the deal — including whether and how much of it can count toward the buyer's required equity injection, whether it must be put on standby (meaning no payments to you) for some or all of the SBA loan's term, and how it must be subordinated to the SBA lender. These rules live in the SBA's Standard Operating Procedures for lenders (SOP 50 10), which is revised periodically. Do not assume the terms you've heard from a prior deal, a broker, or a buyer still apply — confirm the current standby and subordination requirements directly at sba.gov or with the SBA lender before you agree to anything, because they will directly determine when, or whether, you can be paid on your note while the SBA loan is outstanding.
Earn-outs: getting paid based on what happens after you leave
An earn-out ties part of the purchase price to the business hitting agreed targets after closing — usually revenue or profit benchmarks measured over a set period. It's a common way to bridge a genuine price disagreement: instead of arguing over whose projection is right, you agree the price will adjust based on what actually happens.
Earn-outs also generate a disproportionate share of post-closing disputes between buyers and sellers, for one structural reason: once you sell, you no longer control the business your payment depends on. The buyer decides how much to invest in marketing, whether to keep your key employees, whether to fold the business into a larger operation, how expenses get allocated, and how aggressively or conservatively the books get kept. Every one of those choices can push the earn-out measurement up or down — and the buyer's financial interest runs toward the low end.
How to protect an earn-out
Define the metric with precision. Revenue is generally harder to manipulate after the fact than profit or EBITDA, because profit depends on discretionary accounting choices — how expenses are allocated, what gets capitalized versus expensed, intercompany charges, owner salaries. If the deal has to be profit-based, define every input in detail rather than relying on a general reference to "profit."
Fix the accounting method in the contract. State plainly that the earn-out will be calculated using a specified accounting method, applied consistently with the business's historical practices, so the buyer can't change methods mid-stream to suppress the number.
Add operating covenants. Put limits in writing on how the buyer must run the business during the earn-out period — for example, restrictions on diverting business away from it, commingling it into another operation, firing key staff, or starving it of normal marketing and operating spend.
Get audit and information rights. Build in your right to see the underlying books and records, and to have an independent accountant review the earn-out calculation, with a defined dispute-resolution process if you disagree with the buyer's number.
Keep the period short. The longer the earn-out runs, the more can go wrong — market shifts, buyer mismanagement, disputes over causation. A shorter, well-defined window is easier to police than a multi-year one.
None of this eliminates the basic risk of an earn-out — you're still betting on someone else's management — but a tightly drafted earn-out clause is the difference between a payment you can enforce and a number you'll spend years arguing about.
One trap worth naming: the earn-out that's really a paycheck
Sellers are often asked to stay on for a transition period, and it can seem natural to tie the earn-out to that continued work. Be careful. If earn-out payments are conditioned on your continued services, they can be treated as compensation for those services — ordinary income subject to employment tax — rather than as proceeds from selling your business. That's a meaningfully different tax result, and it turns on how the deal is actually structured and documented, not on what you call it. If you're both selling the business and working in it afterward, have your CPA and attorney look at the purchase price and any consulting or employment arrangement together, and pay yourself a real salary for real work under a separate agreement rather than blending the two.
The tax side, at a high level
When you finance part of the sale — through a seller note, and in some cases through an earn-out — you may be able to report the gain using the installment method, spreading it across the years you actually receive payments rather than paying tax on the full gain in the year of sale. Each payment is generally split into three parts: interest income, return of your adjusted basis, and gain on the sale. Interest is reported as ordinary income rather than at capital-gains rates.
Several wrinkles matter here:
The installment method isn't available for every sale — it doesn't apply to things like inventory, dealer dispositions, or stock and securities traded on an established market.
A sale of a whole business is usually treated as a sale of the individual assets, so different pieces of the same deal can land in different tax buckets, and some (like depreciation recapture) can be taxable up front even though you haven't been paid yet.
An earn-out is what the IRS calls a contingent payment sale — one where the total selling price can't be determined by the end of the year of sale — and it has its own reporting mechanics.
You can elect out of the installment method and report the whole gain in the year of sale. That sounds worse, but sometimes it isn't — and the election is made by how you file, so it's a decision to make deliberately with a CPA.
This is genuinely a conversation to have with a CPA before you sign anything, not after. The IRS explains the mechanics, including the reporting form, in Publication 537, Installment Sales, and Form 6252, at irs.gov.
If the buyer's business fails, you're a creditor — not a partner
If the buyer's business later files for bankruptcy, your seller note doesn't disappear — but it doesn't jump the line either. You become a creditor in that case, and where you stand depends heavily on whether your note is secured by a security interest you actually perfected, or is unsecured. A secured note gives you a claim against specific collateral; an unsecured note puts you behind secured lenders and, often, behind taxes and other priority claims. Business bankruptcy has its own rules for how creditors are treated and paid, which observed.org's bankruptcy coverage explains separately — the point here is simply to go into the sale understanding that a promissory note is a claim against a business that could fail, not a guarantee.
Worth knowing too: as a business creditor, you're not protected by the consumer debt-collection rules you may have heard of. Those apply to consumer debts, not to a note between two businesses.
What to do before you sign
Decide, with your advisors, how much of the price you're comfortable deferring and in what form — a note, an earn-out, or both.
If any part of the deal involves an SBA loan to the buyer, confirm the current seller-note standby, equity-injection, and subordination rules at sba.gov before you agree to terms.
Insist on a personal guarantee and a properly perfected security interest for any note you carry, with the filing handled by an attorney in the right state.
Have your CPA set adequate stated interest on the note before signing.
If there's an earn-out, negotiate the metric, accounting method, operating covenants, and audit rights as hard as you negotiated the price itself — and keep any post-closing work you do for the buyer in a separate, properly paid agreement.
Talk to a CPA about installment-sale reporting and the election to opt out, and to a business attorney about drafting the note, guarantee, security agreement, and earn-out provisions as one coordinated package.
Free help exists if you want a second set of eyes before you hire anyone: the SBA, SCORE, and your state's Small Business Development Center all provide no-cost counseling to business owners, including sellers.
This article provides general business information, not legal, tax, or financial advice, and does not create an attorney-client or accountant-client relationship. Tax rules and SBA requirements change; confirm current requirements at irs.gov and sba.gov, and talk to a qualified attorney and CPA about your own deal.
Frequently asked questions
Is it normal for a small-business seller not to get paid in full at closing?
Yes. It's common, especially when the buyer is using bank or SBA financing that doesn't cover the full purchase price, or when buyer and seller disagree on the business's value. Seller notes and earn-outs are both standard tools for bridging that gap, not signs of a weak deal.
What's the difference between seller financing and an earn-out?
Seller financing is a fixed amount you agreed to at closing, paid over time under a promissory note. An earn-out is a variable amount that depends on how the business actually performs after closing against agreed targets. A note is a fixed debt; an earn-out is contingent and depends in part on the buyer's future decisions.
Why do earn-outs lead to so many disputes?
Because after closing, the seller no longer controls the business the earn-out depends on. The buyer's choices about spending, staffing, and accounting can all affect whether the target is met, and the buyer's financial interest runs toward keeping the number low. Precise metric definitions, a fixed accounting method, operating covenants, and audit rights are what make an earn-out enforceable rather than merely arguable.
Does an SBA loan change how seller notes work?
Yes. When a buyer's purchase is financed with an SBA-guaranteed loan, the SBA imposes its own rules on any seller note used in the deal, including whether it counts toward the buyer's required equity injection and whether it must sit on standby for some or all of the loan term. Those rules are in the SBA's Standard Operating Procedures for lenders and are revised periodically, so confirm the current requirements at sba.gov or with the SBA lender before agreeing to terms.
Do I have to charge interest on a seller note?
You should. If an installment sale contract doesn't provide for adequate stated interest, the IRS can recharacterize part of the stated principal as interest, which is taxed to you as ordinary income rather than capital gain. The benchmark rate for that test changes, so have a CPA set the interest rate before the note is signed. See IRS Publication 537 at irs.gov.
Can I spread the tax on a seller-financed sale over the years I get paid?
Often, yes — that's the installment method, reported on Form 6252. Each payment is split into interest income, return of your basis, and gain. But the method isn't available for every sale (it doesn't cover inventory, dealer dispositions, or publicly traded securities), parts of a business sale like depreciation recapture can be taxable up front, and you can also elect out and report the full gain in the year of sale. Talk to a CPA before signing. IRS Publication 537 explains the mechanics.
What happens to my seller note if the buyer's business goes bankrupt?
You become a creditor in that bankruptcy case rather than getting paid automatically. Whether you're paid, and how much, depends heavily on whether your note is secured by a properly perfected security interest or is unsecured — a secured note gives you a claim against specific collateral, while an unsecured note is paid only after secured and priority claims. As a business creditor, you also don't get the consumer debt-collection protections that apply to consumer debts.
This article is general legal information, not legal advice, and may not reflect the most current law or the law in your jurisdiction. Laws vary by state and change over time. For advice about your specific situation, consult a licensed attorney.
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