Seller financing in a business sale is an arrangement where the owner carries part of the purchase price as a loan to the buyer, collecting monthly payments over several years instead of receiving the full amount at closing. It shows up in a large share of small-business transactions because most buyers can’t get a bank to fund the entire price. The seller becomes the lender, which creates real upside for both sides and a set of tax, documentation, and default-risk obligations that a standard purchase agreement won’t handle on its own.
How the Note Is Structured
Most deals open with a down payment of 10% to 30% of the purchase price. That upfront cash gives the seller immediate liquidity and forces the buyer to have enough at stake to push through a tough first year. Interest rates on the seller’s note typically run several points above the prime rate, which in the current environment usually lands between 7% and 10%. The premium reflects the extra risk the seller carries compared with a bank that has underwriting infrastructure and a diversified loan book.
Repayment periods usually run five to seven years, with monthly payments calculated on that amortization schedule. Many notes also include a balloon payment due three to five years in, requiring the buyer to pay off the remaining balance in a lump sum. The balloon is deliberate: it pushes the buyer to refinance through a traditional lender once the business has a track record under new ownership. Without it, the seller can end up waiting far longer than expected for full payment.
Prepayment terms deserve equal attention. Some notes include a prepayment penalty, often 1% to 5% of the remaining balance, that steps down each year of the loan. The penalty protects the seller’s expected interest income if the buyer refinances early. Buyers should negotiate for the right to prepay without penalty after the first two or three years. Sellers, for their part, will usually get a modest step-down penalty accepted without much resistance.
The Minimum Interest Rate You Have to Charge
Sellers sometimes offer a low interest rate, or even zero percent, to attract a buyer or simplify the math. The IRS won’t allow it. Every seller-financed note has to charge at least the applicable federal rate (AFR), which the IRS publishes monthly based on U.S. Treasury yields. Which AFR applies depends on the term: short-term for notes of three years or less, mid-term for notes over three years but not more than nine, and long-term for anything longer.1Office of the Law Revision Counsel. 26 USC 1274 – Determination of Issue Price in the Case of Certain Debt Instruments Issued for Property
If your note charges less than the AFR, the IRS recharacterizes part of each principal payment as interest income, even though the buyer never actually paid that interest. This phantom income is taxed as ordinary income to the seller. The fix is straightforward: check the current AFR before finalizing the note and set your rate at or above it.2Internal Revenue Service. Applicable Federal Rates
One useful wrinkle in the statute: you can use the lowest AFR from the three-month period ending with the month your purchase agreement becomes binding. If rates dropped during those three months, you get the benefit of the lower rate. It’s worth checking if you’re finalizing a deal near the end of a quarter when rates have moved.
Vetting the Buyer Before You Finance
When a bank finances an acquisition, it runs credit checks, analyzes cash flow projections, and scrutinizes the buyer’s financial history. When you’re the lender, that work falls entirely on you. Skip it, and you’re handing your business to someone who may not be able to make the payments.
At a minimum, review the buyer’s personal tax returns for the past three to five years, a current personal financial statement, and their credit report. If the buyer is using an existing business entity to make the purchase, request that entity’s profit-and-loss statements and balance sheets as well. Look for the standard red flags: heavy personal debt, declining income, tax liens, judgments. Inconsistencies between tax returns and financial statements are especially telling.
The down payment percentage is your most powerful screening tool. A buyer who puts 25% or 30% down has demonstrated financial capacity and real motivation to make the business succeed. A buyer pushing for 5% down and maximum seller financing is asking you to bear almost all the risk. You can still agree to a smaller down payment, but understand the position it puts you in.
The Documents That Make the Loan Enforceable
Three documents form the backbone of every seller-financed business sale. Getting any of them wrong, or leaving one out, creates problems that are expensive to fix after closing.
The promissory note is the buyer’s written promise to repay. It spells out the principal amount, interest rate, payment schedule, late-fee terms, and what constitutes a default. Both parties’ full legal names, the exact financed amount, and every payment due date belong in this document. The note should also specify what happens if the buyer pays late, how much notice the seller must give before accelerating the debt, and whether the buyer can prepay without penalty.
The security agreement ties the debt to specific business assets that the seller can seize if the buyer stops paying. Equipment, inventory, intellectual property, customer lists, and accounts receivable should all be itemized. A vague description of the collateral invites disputes later, so list every asset category with enough specificity that there’s no argument about what’s covered.
The personal guarantee makes the buyer individually liable for the debt regardless of how the business is structured. If the buyer operates through an LLC or corporation, the guarantee lets the seller pursue the buyer’s personal assets when the business can’t cover payments. Include the buyer’s Social Security number or taxpayer identification number to make the guarantee enforceable.
Two additional provisions belong in the package. A due-on-sale clause lets you demand full repayment if the buyer tries to sell or transfer the business before paying off the note. Without it, the buyer could flip the business to a third party and leave you holding a note with someone you never vetted. A collateral assignment of life insurance requires the buyer to maintain a policy naming you as assignee up to the outstanding balance. If the buyer dies, the death benefit pays off the note before anything goes to other beneficiaries. Permanent life insurance is more reliable than term for this purpose because it doesn’t expire before the loan does.
Closing and Filing the UCC-1
At closing, all parties sign the promissory note and security agreement, typically in front of a notary to verify identities. Notarization fees are nominal and vary by state.
The critical post-closing step is filing a UCC-1 financing statement with your state’s Secretary of State office. This public filing puts other creditors on notice that you hold a security interest in the business’s assets. Without it, another lender could claim priority over the same collateral, and you’d have no recourse. Filing fees in most states run between $10 and $25.
Before filing your UCC-1, run a lien search against the business to check for existing filings. If another creditor already has a UCC-1 on the same assets, your security interest will be subordinate to theirs, meaning they get paid first if the buyer defaults. This is where sellers who skip due diligence get burned: discovering a prior lien after closing leaves you in a far weaker position.
Set up the first payment transfer at closing. ACH or wire transfers work best because they create clear records and reduce the risk of missed payments. Watching that first payment go through gives you immediate feedback on whether the buyer can handle the debt load.
How the Seller Gets Taxed
Seller financing almost always creates an installment sale under IRC §453, which lets you spread the taxable gain across the years you receive payments instead of reporting the entire profit in the year of the sale.3Office of the Law Revision Counsel. 26 U.S. Code 453 – Installment Method The IRS requires you to calculate a gross profit percentage by dividing your total gain by the contract price, then apply that percentage to the principal portion of each payment you receive.4Internal Revenue Service. Publication 537 – Installment Sales
Each payment has two tax components. The interest portion is taxed as ordinary income at your marginal rate, which can reach 37% for 2026.5Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 The principal portion representing your actual profit is taxed at long-term capital gains rates of 0%, 15%, or 20% depending on your total income.
High earners face an additional layer. The 3.8% net investment income tax applies to both capital gains and interest income when modified adjusted gross income exceeds $200,000 (single) or $250,000 (married filing jointly).6Internal Revenue Service. Net Investment Income Tax Those thresholds are not inflation-adjusted, so more sellers cross them every year.
You report installment sale income on Form 6252, which you must file for the year of the sale and every subsequent year until the note is paid off, even in years when no payment arrives.7Internal Revenue Service. Form 6252 – Installment Sale Income
Depreciation Recapture
This catches sellers off guard. If you claimed depreciation deductions on business equipment or other assets during the years you owned the business, the IRS claws back that depreciation when you sell. The recaptured amount is taxed as ordinary income, not at the lower capital gains rates, and it’s due in the year of the sale regardless of whether you receive any payments that year.8Internal Revenue Service. Publication 544 – Sales and Other Dispositions of Assets
That means you could owe a significant tax bill in year one even though most of the purchase price arrives in later installments. Plan for this by setting the down payment high enough to cover the recapture tax, or set aside cash from other sources. Ignoring recapture is one of the most common and most expensive mistakes sellers make.
Purchase Price Allocation
Buyer and seller must agree on how the total purchase price is split among seven asset classes, ranging from cash and bank deposits at one end to goodwill and going-concern value at the other. The allocation directly affects each side’s tax bill: the buyer wants more allocated to depreciable assets for faster write-offs, while the seller wants more allocated to goodwill for capital gains treatment.9Office of the Law Revision Counsel. 26 U.S. Code 1060 – Special Allocation Rules for Certain Asset Acquisitions
Both sides report the agreed allocation on Form 8594, attached to each party’s tax return for the year of the sale. If the buyer and seller agree in writing to the allocation, the IRS holds both sides to it.10Internal Revenue Service. Instructions for Form 8594 Negotiate the allocation as part of the deal, not as an afterthought. Once it’s filed, changing it requires IRS consent.
Large Sales and the §453A Interest Charge
If the total face amount of your installment obligations arising in a single year exceeds $5 million, the IRS charges interest on your deferred tax liability. The interest rate is the federal underpayment rate, applied to the portion of the obligation above the $5 million threshold.11Office of the Law Revision Counsel. 26 USC 453A – Special Rules for Nondealers The rule rarely hits small-business sellers, but on a mid-market sale the charge can significantly erode the benefit of deferring your tax.
Electing Out of Installment Treatment
You’re not locked into the installment method. If you’d rather report the entire gain in the year of the sale, perhaps because you expect to be in a lower bracket that year or you have offsetting losses, you can elect out by reporting the full gain on your return. The election must be made by the filing deadline, including extensions, for the year of the sale. Once made, you generally can’t reverse it without IRS permission.
Combining Seller Financing With an SBA 7(a) Loan
Many buyers finance an acquisition through a mix of an SBA-backed 7(a) loan and a seller note. The SBA requires a minimum equity injection of 10% of the total project cost, and a seller note can count toward part of that requirement, but only under strict conditions.
Under the current SBA standard operating procedures, seller debt counts as equity injection only if the note meets standby requirements for at least the first 24 months of the SBA loan. On full standby, the seller receives no payments at all during that period. On partial standby, the seller may receive interest-only payments, but at least one quarter of the required equity injection must come from a source other than the seller, and the business’s historical cash flow must support the interest payments.
For the seller, this changes the economics materially. You’re not just deferring payment. You’re accepting that the SBA lender gets repaid first and your note is subordinated. Two years with no cash flow from the note is a real cost. The purchase price and interest rate should reflect that additional risk and delay. Some sellers build the standby period into the interest rate, charging a higher rate that compensates for the forced wait.
What Happens If the Buyer Defaults
The security agreement gives you the right to seize collateral if the buyer defaults, but exercising that right requires following specific procedures. Under the Uniform Commercial Code, a secured creditor can repossess collateral after default either through court action or by self-help, so long as repossession doesn’t involve a breach of the peace. In practice, most well-drafted seller notes include a contractual cure period giving the buyer 15 to 30 days to fix a missed payment before the seller takes further action. The cure period isn’t required by law, but it reduces litigation risk and demonstrates good faith if the case reaches court.
If the buyer doesn’t cure the default, you can dispose of the seized collateral through a public or private sale. You must give the buyer reasonable advance notice, and the sale itself must be conducted in a commercially reasonable manner. Selling equipment at a fraction of its value just to move quickly can expose you to a claim that the sale was improper.
A stock pledge or asset reversion clause provides a different enforcement path. Instead of chasing individual assets through repossession, you retain the right to take back ownership of the business entity itself if the buyer falls below specified financial thresholds. Holding the company’s stock or membership interests in escrow makes this transition faster and preserves the business as a going concern, which is almost always worth more than a pile of liquidated equipment.
The collateral assignment of life insurance addresses a different risk: the buyer’s death before the note is paid off. For notes lasting more than a few years, requiring this coverage is not optional in any practical sense. A term policy sufficient to cover most seller-financed notes costs little compared with the exposure.