Seller financing is the most flexible tool in a small business acquisition. It fills gaps, bridges valuation disagreements and keeps the seller interested in the business after closing. In an SBA deal it comes with rules, and SOP 50 10 8.1 tightened them.
What SOP 50 10 8.1 changed
SOP 50 10 8.1 applies to loans issued an SBA loan number on or after 1 October 2026. For an initial acquisition, the minimum equity injection stays at 10% of the project. What changed is where it can come from.
At least half of the required injection must now be the buyer's own unborrowed cash. A seller note on full standby can make up part of the rest. And a seller note on full standby must now sit for 36 months before it can be refinanced, up from 24 months.
The practical effect is simple. Buyers need more of their own cash than many planned for, and the seller waits longer to be paid on the part that counts as equity.
How a standby note works
A note on full standby receives no payments, neither principal nor interest, while it is on standby. The seller is subordinated to the SBA lender and agrees in writing not to be paid during that period.
That is why it can count toward the injection. It behaves like equity from the lender's point of view, because none of the business's cash goes to it while the SBA loan is being serviced in its early years.
Not every seller note needs to be on standby. A seller can also carry a note that is paid alongside the SBA loan. That note does not count toward the injection, and its payments count against debt service coverage from the first month.
Why earnouts do not fit
An earnout makes part of the price depend on future results. Buyers like it because they pay more only if the business performs. Sellers accept it when they believe a forecast the buyer doubts.
SBA rules do not allow one in a change-of-ownership loan. The price must be fixed at closing. A deal that relies on an earnout to bridge a valuation gap needs a different structure in an SBA deal, or a different lender.
The forgivable note
The structure most often used instead is a seller note that can be reduced if a specific measure falls short. It is anchored to something already known, such as revenue from named contracts in the trailing year, rather than to a forecast.
The distinction matters. A note that adjusts against history is a negotiated price protection. A payment that depends on future earnings is an earnout. Draft it with an attorney who has closed SBA deals, and confirm the terms with your lender before the letter of intent is signed.
What each structure does to your cash plan
| Structure | Counts toward equity injection | Paid in early years | Effect on coverage |
|---|---|---|---|
| Seller note on full standby | Part of it can | No | None while on standby |
| Seller note paid alongside the SBA loan | No | Yes | Counts from month one |
| Forgivable seller note | Depends on how it is drafted | Depends on terms | Depends on terms |
The trap is the standby note. It costs nothing while it sits, so the first-year cash plan looks comfortable. Then payments start, and debt service rises in a year the buyer had assumed was settled. Build the cash plan to the end of the standby period, not to the end of year one.
What seller financing will not fix
It will not rescue a deal that does not cover its debt. Under SOP 50 10 8.1, a first-time buyer must show 1.25x debt service coverage on the seller's historical or adjusted earnings, not on projections. Seller notes paid alongside the SBA loan count against that test.
It will not fix a seller relationship that has gone wrong either. A seller holding a note has a reason to stay involved. A seller holding a note they think is unfair has a reason to dispute every adjustment.
Frequently asked questions
Can a seller note count toward the SBA equity injection?
Yes, partly. Under SOP 50 10 8.1 a seller note on full standby can make up part of the required injection, but at least half of the injection must be the buyer's own unborrowed cash.
How long must an SBA seller standby note stay on standby?
Under SOP 50 10 8.1, a seller note on full standby must sit for 36 months before it can be refinanced, up from 24 months under the previous version.
Are earnouts allowed in an SBA acquisition?
No. SBA rules require a fixed purchase price in a change-of-ownership loan, so a payment that depends on the business's future results is not permitted.
What is a forgivable seller note?
A seller note that can be reduced if a defined measure, usually tied to historical results such as revenue from named contracts, falls short after closing. It is often used in SBA deals in place of an earnout.
Does a seller note affect debt service coverage?
A note paid alongside the SBA loan counts against coverage from the first payment. A note on full standby does not while it is on standby, but it will once payments begin.
Where CFOLogic fits
We model the cash plan through the end of the standby period, so the year payments begin is planned for rather than discovered. After closing, Navigator, our software, calculates debt service coverage the way your lender does and flags drift toward a covenant before the test date.