IBO Advisors Insights

Seller Financing in a Business Sale

By Michael Chasen · Updated October 14, 2026

The short answer

Seller financing is the part of your price the buyer does not pay you — it pays you back. You sign a promissory note, the buyer keeps the cash, and you become a lender to the company you just sold, ranked behind every bank in the deal.

It is not an earnout. An earnout is contingent on performance; a seller note is a fixed obligation the buyer owes whether the business thrives or not. That makes a note the better of the two deferrals, and it is still the piece of the price most likely to be worth less than its face value. The reasons are structural and tax, in that order, and almost none of them show up in the headline multiple.

Why the buyer wants a note at all

A seller note is gap capital. The buyer builds a funding stack — senior debt, sometimes mezzanine, its own equity — and if the stack comes up short of the price, the cheapest way to close the gap is to ask you to fund it. How private equity actually finances a buyout walks the stack in detail; the short version is that lenders size debt off cash flow, and when the multiple they will underwrite is below the multiple the buyer agreed to pay, somebody has to bridge the difference.

How large that bridge is depends almost entirely on who the buyer is. In a sponsor-backed private equity buyout, a seller note is often a modest 5–15% of price, because the fund has committed equity to deploy. In a management buyout, where the buyers are executives funding the equity out of personal savings, the note routinely carries 20–40% of the price — it is frequently the only reason the deal exists. Same instrument, very different exposure.

A second reason goes unsaid: a buyer that owes you several million dollars has bought itself a seller with a continuing reason to make the transition work. That is a real benefit to the buyer, and it should be priced.

What subordination actually means

Almost every seller note in a leveraged deal is subordinated, and sellers consistently underestimate what they have signed. Subordination is not a queue you eventually reach. It is a set of contractual rights the senior lender holds over you:

Payment blockage. If the company trips a covenant with its bank, the bank can block payments on your note — typically for a defined blockage period, sometimes repeatedly. The note does not go away; it simply stops paying, at exactly the moment you would most want it to pay.
Standstill. You agree not to accelerate the note, sue, or exercise remedies for a stated period after a default, so the senior lender can work out its own position first. By the time the standstill lifts, the outcome is usually decided.
Turnover. If you do receive money the subordination agreement did not permit, you hold it in trust for the senior lender and must hand it over.
Amendment rights. The senior lender typically has to consent before you and the buyer change anything about the note, including a workout you both want.

The practical consequence: in a leveraged company, your note is not a bond, it is equity risk wearing a debt coupon. The debt the buyer put on the business to pay you sits ahead of the money the business still owes you — which is the same structural problem described in what happens after private equity buys your company, seen from the creditor side.

One document decides whether the rate and the maturity mean anything, and it is not the note. The subordination agreement sets the blockage terms, and it survives the event you are actually worried about: under 11 U.S. Code § 510(a), “a subordination agreement is enforceable in a case under this title to the same extent that such agreement is enforceable under applicable nonbankruptcy law.” The priority you agree to at closing is the priority you have in a Chapter 11, and the court does not revisit it because the terms turned out badly for you. So read it before you read the note. How long is the blockage period, and can it be reimposed? Does blocked interest keep accruing, and at what rate? Can the senior facility be increased ahead of you without your consent? Each answer is a line that is negotiable before closing and unavailable afterwards.

None of this is abstract: these agreements get filed, so you can read one. A subordinated promissory note attached to an 8-K shows the standard shape — $6,000,000, dated 31 August 2005, 6% a year paid semi-annually, maturing in five years, issued pursuant to a stock purchase agreement (SEC EDGAR). Its subordination section does the work in four moves, and some version of each turns up in nearly every seller note sitting behind a bank. Senior debt is paid in full in cash before the note sees a dollar in any insolvency proceeding. While senior debt is outstanding the holder cannot demand payment at all without the senior lender’s consent, with one carve-out: regularly scheduled principal and interest, and only while no senior default exists. A blockage notice can stop even those payments for up to 180 days. And anything the holder does receive out of turn must be held in trust for the senior lenders and handed over. Read your own version of that section before you argue about the coupon.

A separate subordination agreement, filed in 2006 between a borrower, its junior investor and Silicon Valley Bank, shows what the junior side gets in return. A blockage notice runs 180 days where it specifies a payment default and 120 days for any other event of default — but “no Standstill Period shall be in effect for more than 180 days during any 365 Day Period”, and “there must be a consecutive 185-day period in any 365 Day Period during which no Standstill Period is in effect” (SEC EDGAR). Those two sentences are the whole of the junior creditor’s protection, and they are what you ask for by name. The same agreement also shows what you can lose without noticing: an exhibit states flatly that “There shall be no prepayment of the Subordinated Indebtedness.” A covenant trip in a soft quarter — not a missed payment, just a leverage ratio — and your interest stops for up to 120 days, with no right to accelerate it later.

The note is also the buyer’s second escrow

This is the part sellers find out late. Buyers routinely negotiate a right of set-off: the ability to reduce what they owe on the note by the amount of any indemnity claim or purchase-price adjustment they assert. Not a claim they have proved — a claim they have asserted.

Stack that against what is already being held back. In lower-middle-market deals, SRS Acquiom reports that virtually all transactions carry at least one escrow or holdback, the median general indemnity escrow runs 12.5% of transaction value against 10% across all deals, 92% of deals include a purchase price adjustment, and nearly half carry a separate escrow for that adjustment at a median of 1.23% (SRS Acquiom, Lower Middle Market M&A). Add a 15% seller note with an unrestricted set-off right on top and well over a quarter of your price is contingent on claims the buyer gets to raise.

The fix is drafting, not goodwill: no set-off unless the claim has been finally adjudicated or agreed, a cap on what can ever be offset, and a requirement that the escrow be exhausted first.

A worked example

Take an invented company: $7 million of normalized EBITDA, sold at 7.0x, a $49 million purchase price. The buyer funds it this way:

Source	Amount	Share of price
Senior debt (3.5x EBITDA)	$24,500,000	50%
Sponsor equity	$14,700,000	30%
Rollover equity (you)	$4,900,000	10%
Seller note (you)	$4,900,000	10%
Total	$49,000,000	100%

The headline is $49 million. The cash that reaches the closing table is $39.2 million, before transaction expenses and tax. One fifth of your price is now paper: rollover equity in a sponsor-controlled company, and a subordinated note behind $24.5 million of bank debt.

Say the note pays 8%, interest only, with the principal due in a bullet at the end of year five. That is $392,000 of interest a year and $1.96 million over the term. It reads like a decent fixed-income return. It is not, for two reasons that compound.

First, the coupon is ordinary income. Interest on a seller note is taxed at ordinary rates, not the long-term capital gains rate that applies to the rest of your proceeds. At a 37% top federal marginal rate plus the 3.8% net investment income tax, an 8% coupon is 4.74% after tax, before any state tax. Second, you are earning that 4.74% in the most junior position in the capital structure of a company you no longer run, with no security, no board seat, and a standstill agreement that prevents you doing anything about it for the first several months of any problem.

So the question is not "is 8% a fair rate?" It is "what cash would I take instead of this note?" Whatever that number is, it is below $4.9 million — which means the deal in front of you is not a $49 million deal, and the multiple everyone is quoting is not the multiple you are getting. Running your own range in the business valuation calculator first makes that comparison concrete.

The tax nobody prices at the table

A seller note is reported under the installment method of Internal Revenue Code § 453, which lets you recognize gain as payments arrive rather than all at once. That is genuinely useful — it is the main argument in favour of a note. Four rules decide how useful.

1. The gross profit percentage sets what is taxable

Under the installment method, each payment splits into interest, a tax-free return of basis, and gain. The gain share is the gross profit percentage: gross profit divided by contract price (IRS Publication 537). In the example above, a $2 million stock basis against a $49 million price gives a gross profit percentage of 95.9% — so $4.70 million of the $4.9 million note principal is gain when it is finally paid. Deferral, not forgiveness.

2. Recapture is taxed in year one regardless

If the transaction is an asset sale, § 453(i)(1)(A) is blunt: "any recapture income shall be recognized in the year of the disposition." Recapture income is the ordinary income that would arise under § 1245 or § 1250 if every payment landed in the year of sale, and only the gain above that amount gets installment treatment. A company with a heavily depreciated equipment base can therefore generate an ordinary-income tax bill in year one on money it will not receive until year five. In a stock sale this does not arise at the seller level, which is one of several reasons the asset-versus-stock question should be settled before the note is sized, not after.

3. The $5,000,000 line in § 453A

Section 453A imposes an interest charge on the tax you deferred, but only where the face amount of your installment obligations arising in the year and still outstanding at year end "exceeds $5,000,000." The charge applies to the excess, not the whole note: the applicable percentage is the face amount above $5 million divided by the total face amount, and it is multiplied by the deferred tax liability and the § 6621(a)(2) underpayment rate.

The $4.9 million note above sits under the threshold and carries no interest charge at all. A $6 million note crosses it, and 16.7% of the deferred tax liability starts accruing an annual interest charge — at the § 6621 rate, which for individuals is 7% a year, compounded daily, in the fourth quarter of 2026. That is a genuine negotiating line, and it is arithmetic, not judgment: there is a real difference between a note sized at 10% of a $49 million price and one sized at 12.5%, and it is not the $1.1 million of face value.

4. You cannot borrow against the note

The obvious workaround — pledge the note to a bank, get your money now, keep the deferral — is closed. Under § 453A(d), if an installment obligation secures indebtedness, the net proceeds of that debt are treated as a payment received on the obligation, as of the later of when the debt becomes secured or when the proceeds arrive. Pledge it and you accelerate the gain. The deferral and the liquidity are mutually exclusive by design.

One escape hatch exists in the other direction: § 453(d) lets you elect out of the installment method entirely and recognize all the gain in the year of sale. The election must be made by the due date of that year's return including extensions, and is revocable only with the Commissioner's consent. It is worth modelling if you expect rates to rise or the note to be at real risk — paying tax on a gain you later never collect is the worst outcome available.

Getting the interest rate right

You cannot write a 1% note to dress up the headline price. If a contract does not provide adequate stated interest, § 483 and § 1274 recharacterize part of the principal as interest — converting capital gain into ordinary income without anyone at the closing table deciding to. Publication 537 sets the test rate by the term of the note: the short-term applicable federal rate for terms of three years or less, the mid-term rate for terms over three and up to nine years, and the long-term rate beyond that.

There is a ceiling as well as a floor. Section 1274A caps the discount rate for a qualified debt instrument at 9% compounded semiannually, for notes whose stated principal does not exceed a base of $2,800,000, indexed for inflation since 1988 — Publication 537 gives the indexed figure as $7,296,700. Most lower-middle-market seller notes fall inside that cap.

In practice the rate is negotiated, not computed, and the right comparison is not the AFR. It is what a mezzanine lender would charge for the same position: a subordinated, unsecured claim on a leveraged company, which is priced well into the teens. If the buyer is offering you 6% for a position a professional lender would price at 14%, the gap is not a rounding error. It is a second discount on your price, hidden in a term sheet line that looks administrative.

Seller note, earnout, rollover: three different animals

	Seller note	Earnout	Rollover equity
What decides payment	A fixed schedule, if cash flow and the senior lender allow it	Performance targets the buyer now controls	The price at the buyer's eventual exit
Priority	Debt, below senior, above equity	A contractual claim, usually unsecured	Last in line
Return while you wait	A coupon, when it is not blocked	Nothing	Nothing, unless there is a distribution
Typical tax character	Installment gain plus ordinary interest	Installment gain plus imputed interest	Usually deferred at closing
Main risk	Credit and subordination	The buyer's post-close conduct	Time, leverage and the preference stack

A note is the most predictable of the three and still the second-least liquid. An earnout is worth about 21 cents on the dollar across private-target deals (SRS Acquiom); rollover equity converts only when the sponsor sells. If an offer contains all three, strike them all out and look at what is left: that is the number you are actually being paid.

What to negotiate, in order

The size. Everything else is damage control. Every dollar moved from the note to cash at closing is a dollar that is certain, taxed at capital gains rates, and yours to invest. Start by asking what the buyer's lender would actually fund, not what the buyer prefers.
Amortization over rate. A 7% note that amortizes over five years returns most of your principal before the risk has time to develop. A 10% interest-only bullet leaves 100% of the principal exposed for the full term. Sellers trade the first for the second because the coupon looks better; it is the worse deal in almost every scenario.
The standstill period. This is usually negotiable and rarely negotiated. Push for the shortest standstill and the fewest permitted payment-blockage periods the senior lender will accept, and cap the total number of blocked days over the life of the note.
Security, even if junior. A second lien behind the bank is worth more than nothing, and it changes your position in a restructuring from unsecured creditor to secured creditor. Ask. Buyers expect to be asked.
Acceleration triggers. The note should come due on a sale of the company, a change of control, or a dividend recapitalization. Without that, the buyer can sell the business at a profit while your note runs on against a new owner you never underwrote.
Right of set-off. Buyers want the right to net indemnity claims against the note. Resist it, or limit it to claims that have actually been adjudicated — otherwise every post-closing dispute becomes a reason to stop paying you.

The same discipline applies to any deferred piece of a price. What an earnout in a business sale actually pays covers the contingent version of the same problem, and the seven types of buyouts shows which structures lean on seller paper and which do not.

Frequently asked questions

What is seller financing in a business sale? An arrangement where the seller accepts a promissory note from the buyer for part of the purchase price instead of cash at closing. The seller becomes a lender to the business, usually subordinated to the buyer's bank, and is repaid with interest over a term that commonly runs three to seven years.

How much of the price is normally seller-financed? It depends on the buyer. Sponsor-backed deals typically use a seller note for a modest slice of price because the fund has equity to deploy; management buyouts often need the seller to carry 20–40%, because the buyers are individuals. The IBBA and M&A Source Market Pulse survey does report it at the small end: across 255 advisors and 181 closed transactions in the second quarter of 2026, sellers received 83% to 92% cash at close on average, and seller financing “accounted for less than 10% of most deals in Q2, somewhat below trend” (IBBA / M&A Source Market Pulse, Q2 2026). Above that size no dataset tracks seller-note prevalence the way SRS Acquiom tracks earnouts — its 2026 study of more than 4,400 private-target deals found earnouts in 29% of lower-middle-market transactions closing at $50 million or less, and 35% of those at $25 million or less (SRS Acquiom). Deferred consideration of one kind or another is the norm, not the exception.

Is a seller note taxed as capital gain? The principal is, under the installment method, as and when it is paid — at your gross profit percentage. The interest is ordinary income throughout. Depreciation recapture in an asset sale is taxed in the year of sale no matter when the cash arrives.

What happens to my note if the company fails? You are an unsecured, subordinated creditor behind the senior lender and usually behind any mezzanine debt. In most lower-middle-market restructurings that position recovers little. This is why the size of the note matters more than its rate.

Can I sell or borrow against the note? Selling it is possible in principle but the market is thin and the discount steep. Borrowing against it triggers § 453A(d), which treats the loan proceeds as a payment on the note and accelerates the gain.

Sources

The bottom line

A seller note is a loan you make to the person buying your company, on terms a bank would not accept, secured by nothing, repayable after everyone else is paid. Sometimes it is the right trade — it can be the difference between a deal and no deal, and the tax deferral is real. But it should be priced as credit, not treated as price.

The deeper point is why the note exists. It exists because the buyer's capital stack could not fund the number the buyer agreed to pay. An Independent Buyout addresses the same gap differently: the company itself is financed against its own cash flow at a valuation set the way a sponsor would set it, so the structure is built to pay the value at closing rather than to carry it on the seller's balance sheet for five years. The IBO versus private equity numbers sets the two side by side, and every exit option puts both in context.

If your company does $3M+ in EBITDA and there is a seller note in the offer on your desk, talk to IBO Advisors and have it priced as the credit instrument it is before you sign.

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