Published 2025-09-25 · Last updated 2025-12-07 · Reviewed by Valzura Editorial Team
Seller Financing Calculator
Model the seller note behind a business sale, balloon payment included.
Seller financing is an arrangement where the seller of a business or property accepts part of the price as a promissory note paid over time instead of cash at closing. The buyer makes a down payment, then pays the seller monthly principal and interest on the balance, exactly like a loan; some notes amortize over a long schedule but require a balloon payoff after a few years. Seller notes on small business sales typically cover 10 to 60 percent of the price at 6 to 10 percent interest over 5 to 10 years.
The agreed sale price of the business or property.
Cash the buyer pays at closing, as a share of the price.
Seller notes commonly run 6 to 10 percent.
The schedule payments are calculated on, often 5 to 10 years.
Leave 0 for a fully amortizing note with no balloon.
Monthly payment
$4,853.10
Total interest
$182,372
Over 120 monthly payments.
Total repaid on note
$582,372
Fully amortizing, no balloon.
How a seller note is typically structured
A typical small business sale with seller financing splits the price into a cash down payment and a seller's note for the balance. Notes usually cover 10 to 60 percent of the price, carry 6 to 10 percent interest, and run 5 to 10 years, secured by a lien on the business assets and a personal guarantee from the buyer. The interest rate, term, down payment, and any balloon are all negotiated together: a buyer who puts more cash down can reasonably push for a lower rate or a longer runway.
A worked example, with and without a balloon
Take a 150,000 dollar seller note at 8 percent interest fully amortized over 5 years. The monthly payment is about 3,041 dollars and the seller collects roughly 32,500 dollars of interest over the term. Stretch the same note across a 10 year amortization with a balloon due after year 5, and the payment drops to about 1,820 dollars a month, but roughly 89,750 dollars of principal comes due at the balloon, which the buyer typically refinances through a bank. The calculator above lets you flip between the two structures instantly.
Using this as an owner financing calculator
Owner financing is the same arrangement viewed from a house, land, or small property sale, and this owner financing calculator handles those deals identically: price, down payment, rate, term, balloon. Whatever the asset, the buyer's test is the same. The income has to cover the note with room to spare, so before agreeing to a payment, check that the cash flow clears lender-style coverage with the DSCR calculator; a business that cannot cover the seller note at a 1.25 ratio is priced on hope.
Pairing a seller note with an SBA 7(a) loan
Most financed acquisitions stack a bank loan, a down payment, and a seller note. When the bank loan is SBA-backed, one rule matters enormously: the seller note can count toward the buyer's required equity injection only if it sits on full standby, meaning the seller receives no payments for the required period. Otherwise the SBA treats it as ordinary debt the cash flow must service on top of the bank payment, which you can size with the SBA loan calculator. Sellers should price standby terms into the note's rate, since their money is locked up longest and paid last.
Why financing terms and price are one negotiation
Sellers who offer financing routinely command higher prices, because they expand the buyer pool and signal confidence in the business's future. That makes the note's terms and the headline price a single negotiation, not two: a generous note at a strong price can beat an all-cash discount. An experienced intermediary earns their fee here, so it can pay to find a business broker to structure the deal. And before you set the down payment and note, anchor the negotiation: value your business for free and build the financing around a defensible price.
Frequently Asked Questions
How does owner financing work when selling a business?
The seller acts as the lender for part of the purchase price. The buyer pays a down payment at closing, signs a promissory note for the balance, and repays the seller in monthly installments with interest, usually secured by the business's assets and a personal guarantee. If the buyer defaults, the seller can reclaim the business.
What is a typical interest rate for seller financing?
Seller notes on small business sales commonly carry 6 to 10 percent interest, roughly in line with or slightly above bank rates, reflecting the risk the seller takes. The rate is negotiated alongside the down payment, term, and security, so a larger down payment often earns the buyer a lower rate.
What is a balloon payment in seller financing?
A balloon note calculates payments on a long amortization schedule, say 10 years, but requires the remaining balance to be paid in full earlier, say after year five. This keeps the monthly payment low while returning the seller's money sooner. The buyer typically refinances through a bank to make the balloon payment.
Can seller financing be combined with an SBA loan?
Yes, and it is common in acquisitions. A seller note can count toward the buyer's equity injection on an SBA 7(a) loan only if it sits on full standby, meaning the seller receives no payments for a required period. Otherwise the SBA treats the note as additional debt that the business's cash flow must cover.
Why do sellers offer financing?
Seller financing widens the pool of qualified buyers, supports a higher sale price, signals the seller's confidence in the business, and spreads the tax on the gain across years through an installment sale. The trade-off is credit risk: the seller is only fully paid if the buyer keeps the business performing.
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