What happens if the buyer stops paying a seller note?
Dee carried a note when she sold her lawn company. In month 14, Tom's payment landed nine days late. Here is what the paperwork says happens next.
By The YourBizWorth team · 8 min read
Dee sold Ridgeline Lawn and Tree to Tom, her longtime crew lead, fourteen months ago. He paid 20% down. She carried the rest on a five-year note, and a payment has landed in her account on the first of every month since.
This month the first came and went. So did the fifth. On the ninth the payment arrived, with no note and no call.
Dee, Tom and Ridgeline are made up. The fear is not. It is the reason almost half of owners say they will not offer financing at all. This issue is about what actually happens when a payment is late.
Chapter 1
The first late month
Example only, with made-up numbers. Ridgeline sold for $200,000. Tom paid $40,000 down and Dee carried $160,000 at 8% over 5 years. His payment is about $3,240 a month, and month 14 of 60 is the first one that was late.
Dee's first instinct was to call her attorney. Her second was to reread the note. The note answered the question before the attorney could.
Almost halfof owners say they will not offer seller financing, and another 23% are undecided (BizBuySell, Q2 2026)
A grace period is the number of days after the due date before a payment counts as late. It is written in the note. In Dee's made-up note it is ten days, so Tom's payment on the ninth was inside it.
A late fee is a set charge the buyer owes once the grace period runs out. It is also written in the note, and it only exists if the note says so. If yours does not, there is no fee to collect.
So the first late month is usually not a default. It is a payment that arrived inside the window the two of you agreed to. What matters is what Dee does next, and the note covers that too.
Chapter 2
What the paperwork says
Dee pulled the folder from the closing. Four documents, drafted by the attorneys a year ago, that she had not opened since. Each one gives her something different.
Morgan & Westfield, a brokerage firm, says a seller note should be secured with a UCC lien on the business assets and protected with a promissory note and a personal guarantee. The firm also suggests asking for monthly or quarterly financial statements during the term, so you see trouble before a payment misses.
If Tom had an SBA loan ahead of Dee, her note would be on standby and the bank would be paid first. Under SBA SOP 50 10, a seller note on full standby gets no payments while the SBA loan is outstanding. Dee financed the sale herself, so her note is first in line.
Promissory note
Tom's written promise to pay. It sets the amount, the rate, the payment date, the grace period, the late fee, and what counts as default.
Security agreement
Gives Dee a claim on the business assets, the trucks, mowers and client contracts, if Tom stops paying. Filed as a UCC lien, it also stops him selling those assets while the note is open (Morgan & Westfield).
Personal guarantee
Puts Tom himself behind the debt, not only the company. If the business cannot pay, Dee can pursue him personally.
Default terms
Spell out the steps: how many days late, what notice Dee must send, how long Tom has to cure it, and when she can call the whole balance due.
Chapter 3
The call before the lawyer
Dee's attorney told her the same thing on the phone that the documents said on paper. Call Tom first. The note gives her every step after that, in order, and most of them never get used.
"I did not call a lawyer first. I called Tom. Then I called the lawyer, and told her what Tom said."
Morgan & Westfield says that in many instances a default can be dealt with simply by talking with the buyer, and that most buyers will work out a solution. A new schedule, more collateral or handing back control are the usual options. That is one firm's experience, not a count, so say often, and plan for the rest.
You cannot take the business back on your own. Ownership passed to Tom at closing. Morgan & Westfield puts it plainly: you cannot take it back without the buyer's permission, or without the dispute steps in your purchase agreement.
Days 1 to 10Grace period. The payment is late, not in default. No fee yet. A phone call, not a letter.
Day 11The late fee applies. Dee sends the written late notice the note describes, by the method the note names.
Cure periodThe note gives Tom a set number of days to pay what he owes. If he pays, the note is current and nothing else happens.
WorkoutIf Tom cannot catch up, the two sides amend the schedule in writing, through their attorneys. One late month becomes a smaller amount spread over the rest of the term.
AccelerationIf the cure period passes with no payment and no deal, Dee can declare the whole balance due at once, if the note allows it.
Repossession or foreclosureThe last step. Dee enforces the security agreement on the assets and the guarantee on Tom. It takes an attorney, and usually a court.
Chapter 4
What Dee did
Dee called Tom on the sixth. He picked up on the first ring. Ridgeline's biggest commercial client, a property manager with eleven buildings, was 45 days behind on its invoices. Tom had paid the crews and the fuel first, and Dee second.
She did not like hearing it. She liked that he told her. They met at the equipment yard the next morning, with the client's aging report on the hood of his truck.
Their attorneys wrote a one-page amendment. Month 14 would be paid in two halves, the second with month 15, and the late fee was waived once. Everything else in the note stayed the same. Both of them signed it.
The property manager paid in month 15. So did Tom, in full. The note is current, and Dee gets a copy of Ridgeline's statements every quarter now, which she did not ask for the first time.
The late payment was real. So were the documents. Dee never used the security agreement or the guarantee, and that is the point of having them. Tom knew what they said, and so did she.
What to do instead
Take a real down paymentThe buyer has money at stake from day one. Morgan & Westfield says most sellers who finance the sale themselves want at least 50% down. Start from the cash you need at closing, and price the business from the tax returns first. Start with the free calculator
A personal guarantee and a security interest, filedThe note alone is a promise. The guarantee puts the buyer behind it, and the filed UCC lien puts the business assets behind it.
Write reporting rights into the noteMonthly or quarterly financial statements for the life of the note. You want to see a slow client before you see a late payment.
Call earlyOn the first late day, not the thirtieth. A late month is often fixed with a phone call and a one-page amendment, and the note tells you what comes next if it is not.
The attorney drafts everythingThe note, the security agreement, the guarantee, and any amendment later. Put your terms in the listing, so the buyers who ask are the ones who can meet them. See how a listing is run
Sources
Morgan & Westfield, Seller Financing (The Art of the Exit, chapter 3)Checked October 18, 2026 (page undated) · None. This is a brokerage firm describing market practice, not a dataset.States that seller notes average five years and vary from three to seven, that interest rates on them have ranged from 6% to 8%, and that notes are often 10% to 40% of the price. It says most small business sellers want at least 50% down. On defaults, it says a seller note should be secured with a UCC lien on the business assets and a personal guarantee, that a seller cannot take the business back without the buyer's permission or the dispute steps in the purchase agreement, and that in many instances a default is dealt with by talking with the buyer. It also claims businesses sold with seller financing bring 20% to 30% more than all-cash sales, with no dataset behind that figure. One firm's experience, not a survey.
US Small Business Administration, SOP 50 10: Lender and Development Company Loan ProgramsVersion 8 effective June 1, 2025; version 8.1 effective October 1, 2026For a 7(a) loan that funds a complete change of ownership, the buyer must inject at least 10% of total project cost. A seller note can count toward up to half of that only if it is on full standby (no payments) for the life of the SBA loan. SBA revises this SOP; confirm the current rule with the lender.
BizBuySell, Insight Report, Q2 2026: Financing Becomes a Major Deal HurdleQ2 2026, archived copy checked October 18, 2026 · Survey of owners, buyers and brokers; sample size not stated on the pageStates that 90% of buyers expect seller financing to be part of their acquisition strategy, while 29% of owners plan to offer it, almost half say they will not, and 23% are undecided. Also reports owner priorities in a sale: 34% a fast, low-stress sale, 30% business continuity and employee well-being, 30% the highest price. The live page shows the latest quarter, so the link is an archived copy of the Q2 2026 edition.
YourBizWorth is not a broker, appraiser, or law firm. This column is general information, not legal, tax, or lending advice.
Questions people ask
Can I take the business back if the buyer stops paying?
Not on your own. Ownership passed at closing. Morgan & Westfield says you cannot take the business back without the buyer's permission, or without following the dispute steps in your purchase agreement. A security agreement lets you claim the assets through those steps, with an attorney.
What is a cure period?
The time the note gives the buyer to fix a missed payment after you send notice, before you can take the next step. The length is set in the note. If the buyer pays inside it, the note is current again.
Should I charge a late fee?
Ask your attorney to put one in the note. You can waive it later, as Dee did. The fee is not where the money is. It gives the buyer a reason to call you before the due date instead of after it.
Does the bank get paid before me?
If the buyer has an SBA loan, yes. Under SBA SOP 50 10, a seller note that counts toward the buyer's injection must be on full standby: no payments to you while the SBA loan is outstanding. Ask the buyer's lender how your note will be treated before you agree.
