What it means
A buyer may have enough cash and bank finance for most, but not all, of a purchase, so the seller agrees to leave a portion outstanding as a loan. This can bridge a financing gap and show confidence in the transferred business, but it shifts credit risk to the seller.
If the acquired operation underperforms, the buyer still owes the note unless the contract says otherwise, so the seller should assess the buyer's ability to pay, not just the nominal purchase price. Document the principal, interest rate, repayment dates, default terms and whether payments can be prepaid.
Some notes amortise through equal periodic payments, while others pay interest during the term with a balloon principal payment at maturity, and a seller may request security over assets or guarantees, subject to other lenders' rights. If a bank requires subordination or a standby period, the seller might be unable to collect while senior debt is outstanding, so read the intercreditor terms alongside the note.
A vendor note can change how the deal is priced, since a seller offered $5 million with $1 million deferred bears different risk from one receiving $5 million cash at closing. The present value of deferred payments depends on rate, timing and default risk.
Tax consequences can also differ by jurisdiction and transaction form, so do not treat the face amount as cash already received or assume a given interest rate compensates for all risk. For the buyer, monthly or annual instalments must fit realistic cash flow after working capital, maintenance, tax and senior debt service, and a forecast that uses all earnings for note payments leaves no reserve for weak trading.
Stress-test customer loss, delayed integration and rising costs, because a seller note may have restrictive covenants and acceleration clauses that make a missed payment more serious than a simple extension request. Compare the note with an earnout, where additional consideration is contingent on defined results and disputes can arise over measurement and management control, whereas a vendor note generally represents a fixed debt claim even if its payment timing has conditions.
Parties can combine the two, but each needs separate language, and legal and accounting classification depend on the actual terms, not the shorthand used in negotiations. For sellers, diligence continues after closing through borrower reporting, security monitoring and payment tracking, while buyers should record the liability and reconcile principal and interest under the applicable framework.
Both sides should specify what happens if the business is sold again. A clear note can make a deal possible, but it cannot turn an unaffordable purchase into a safe one.
In practice
Real-world examples.
Example
A seller finances $1 million of a buyer's acquisition price over three years at 6% interest. The buyer pays three equal annual instalments and the seller records interest income each year. The seller tracks the buyer's trading results through the reporting rights in the note.
Example
A senior lender requires a seller note to be subordinated under a signed agreement. The seller agrees that the bank is paid first and that note payments stop if the bank loan is in default. In return the seller negotiates a higher interest rate and a clear date for catching up missed payments.
Example
A buyer models a balloon payment of $400,000 at the end of year four separately from ordinary monthly debt service. The model shows that cash will be tight in that final year. The buyer arranges refinancing before signing rather than hoping that the business will find the money.
Formula
Calculation
For equal annual amortising payments: Payment = Principal x r / [1 - (1 + r)^(-n)]
where r is annual interest rate and n is the number of annual payments.
Worked example. A fictional $1 million note bears 6% interest and is repaid in three equal annual payments.
- Payment = $1,000,000 x 0.06 / [1 - 1.06^(-3)] = $60,000 / 0.160381, which is about $374,110 a year; exact rounding and dates follow the contract.
- Total paid is about 3 x $374,110 = $1,122,330, or roughly $1.122 million, including interest.
- Year 1: interest is $60,000, principal repaid is about $314,110, and the balance falls to about $685,890.
- Year 2: interest is about $41,153, principal repaid is about $332,957, and the balance falls to about $352,933.
- Year 3: interest is about $21,176 and the final payment clears the remaining balance.
A balloon or irregular schedule requires a different calculation.Case study
Seen in the real world.
This illustrative and entirely fictional example follows Cedar Print, an invented buyer of a small packaging firm. Its lender financed most of the deal, and the seller accepted a vendor note for the remainder. The first draft gave the seller a high rate but did not explain how payments ranked behind the bank. The parties negotiated a clear repayment schedule, reporting rights and an intercreditor agreement.
Cedar stress-tested cash after capital spending before signing. In the invented outcome, it made scheduled payments, while the seller monitored the note rather than treating it as received cash on closing day. The case shows how payment priority and cash capacity matter as much as the headline purchase price.
Watch out
Common mistakes.
- Treating a seller note's face amount as cash already received.
- Ignoring bank subordination, security and default clauses.
- Confusing a fixed debt obligation with a contingent earnout.
Questions
People also ask.
What is a vendor note?
A seller-financed debt claim for part of a purchase price under agreed repayment terms.
Is it always secured?
No. Security and priority depend on the documents and other lenders' claims.
Why might a seller accept one?
To complete a deal, earn interest or bridge the buyer's financing gap while taking repayment risk.
From the founder's library

Take it further with the book.
Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.
25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.
View the book and save 25%