Most buyers walk into a business acquisition thinking they need a bank. The bank writes the check. The bank owns the deal. That framing leaves money on the table. According to EBIT Community's analysis of 2025 SBA rules, seller financing is the structure lever that determines whether a $2M acquisition actually pencils out for a buyer who does not have $200,000 in cash sitting idle.
This is not a workaround. It is a negotiated deal term. Sellers use it to close deals that banks will not fully fund. Buyers use it to reduce upfront cash requirements and align seller incentives with post-close performance. Done right, it makes deals that would otherwise die.
What seller financing actually is
Seller financing means the person selling the business lends the buyer a portion of the purchase price. Instead of receiving 100 cents on the dollar at closing, the seller takes a note. The buyer makes payments over time. The seller earns interest on the deferred amount.
In practice, seller notes show up in every deal size class. Lower-middle-market acquisitions in the $1M to $10M purchase price range routinely include seller notes covering 10% to 30% of the deal. The note is subordinated to senior debt. It sits behind the bank or the SBA loan in the payment waterfall.
That subordination is not just a technicality. It is the price sellers pay to get the deal done. And most experienced sellers accept it because the alternative is a lower purchase price or no deal at all.
What the SBA changed in June 2025
The SBA's Standard Operating Procedure 50 10 8, effective June 1, 2025, changed how seller notes interact with the minimum equity injection requirement on 7(a) acquisition loans.
The rule: buyers must put in at least 10% of the total project cost as equity. That is not new. What changed is how seller notes count toward that 10%.
Under the old rules, a seller note counted toward the equity injection if it sat on standby for 24 months. Under SOP 50 10 8, a seller note used for equity injection must sit on full standby for the entire SBA loan term. For a standard 10-year 7(a) loan, that means zero principal and zero interest payments for a decade.
Most sellers will not accept that. The math is brutal for them: lend money, collect nothing for 10 years, then get paid back with inflation having eaten the purchasing power of your principal.
The practical consequence is straightforward. True zero-down SBA acquisitions are dead. Buyers need real cash. For a $500K purchase price, that means approximately $50,000 in genuine buyer equity. For a $1.5M deal, approximately $150,000. For a $3M deal, approximately $300,000. The seller note cannot replace that cash entirely.
The two-note structure that still works
Sophisticated acquisition buyers use a structure that keeps seller financing alive within the new SBA constraints.
Split the seller note into two pieces.
Note one covers up to 5% of the purchase price and satisfies the equity injection requirement. It sits on full standby for the SBA loan term. The seller collects nothing from this note until the SBA loan is paid off. In exchange, this note earns interest that accrues and compounds.
Note two covers the remaining seller financing, structured as additional acquisition financing rather than equity. This note can carry shorter standby periods, perhaps 24 months, standard amortization thereafter, and current interest payments after the standby period ends. Because it is not classified as equity, the full-term standby requirement does not apply.
The result: a $2M acquisition could look like this. SBA loan at 80%: $1.6M. Buyer cash at 5%: $100,000. Seller note one for equity: $100,000 on full standby. Seller note two as additional financing: $200,000 with a two-year standby then standard amortization at 6% to 8%.
The buyer puts in $100,000 instead of $200,000. The seller receives payments from note two starting in year three. Both parties get a workable deal.
Why sellers agree to carry notes
Sellers are not doing buyers a favor. They are solving their own problems.
A seller who wants full cash at close limits their buyer pool to acquirers with deep pockets or strong balance sheets. Most lower-middle-market sellers do not have that buyer pool. The business is worth $2M to $5M. The buyers who can write that check outright are rare.
Sellers who carry notes signal confidence in their own business. A seller who refuses any note is often a seller who knows something the buyer does not. A seller willing to carry 15% to 20% of the purchase price signals they believe the business will perform well enough to service that debt.
Tax timing also motivates sellers. Installment sale treatment under IRS rules spreads capital gains recognition across payment years rather than forcing all gain recognition into the year of sale. For a seller in a high-income year, that deferral has real value. An experienced seller's tax advisor will model this before any price negotiation begins.
Finally, sellers earn interest income on a note that would otherwise sit in a money market account earning lower returns. A seller note at 6% to 8% beats many alternatives for a business owner who just exited and holds significant liquidity.
Negotiating the seller note
The note terms matter as much as the note size.
Interest rate: seller notes in lower-middle-market deals typically range from 5% to 8%. The rate reflects the seller's alternative uses for capital and their confidence in the buyer's ability to perform. A higher rate compensates the seller for the subordinated position and the illiquidity of the note.
Term: seller notes often match or slightly exceed the SBA loan term. A 5-year seller note on a 10-year SBA loan creates a balloon payment risk at year five that buyers should model carefully. Aligning terms or building in refinancing rights gives buyers flexibility.
Standby period: for notes not used as equity injection, negotiate the shortest standby period the seller will accept. Sellers prefer standby periods because cash flowing to the seller in years one and two increases default risk on the SBA loan. SBA lenders prefer standby periods for the same reason. But a shorter standby improves the seller's economics and makes the note easier to sell.
Personal guarantee: buyers should expect to personally guarantee a seller note. Sellers are extending credit. They want recourse. This is standard.
Note subordination agreement: the SBA lender will require a subordination agreement from the seller before the loan closes. The seller must formally acknowledge that the SBA loan payments take priority. Get this agreement signed early. A seller who resists subordination is a red flag.
What can go wrong
Seller financing is not free money. It is deferred liability.
The total debt service on an acquisition with an SBA loan plus a seller note is higher than a clean SBA loan alone. The business has to generate enough cash to cover both. Model the debt service coverage ratio with the seller note included, not just the SBA loan. SBA lenders require a minimum DSCR; the seller note eats into that ratio.
Seller notes can create friction post-close. A seller who holds a note is a creditor with legal rights. If the business underperforms and payments become difficult, the seller holds negotiating power. Most sophisticated buyers negotiate earn-out and note terms separately to avoid giving sellers overlapping claims against the business.
State law governs seller notes. A buyer purchasing a business in a state with restrictive usury laws needs counsel before finalizing interest rate terms. What looks like a standard 8% rate might trigger a legal issue depending on the state.
The bottom line for ETA buyers
Seller financing is a tool that lower-middle-market acquisition buyers should understand at the level of deal structure, not just deal terms. The SBA rule changes in June 2025 tightened the equity injection requirements but did not eliminate seller financing. They changed how it must be structured.
The two-note approach works. Buyers who understand it enter negotiations with a real advantage over buyers who arrive expecting seller financing to substitute for buyer equity. It cannot. But it can reduce that equity requirement by half.
Get SBA counsel involved before the LOI. Confirm the structure with your lender before you finalize price. Do not let the seller know the SBA constraints before you understand them yourself. The information advantage belongs to the prepared buyer.
At Patriot Growth Capital, deal structure decisions like this determine whether an acquisition creates durable value or saddles a veteran operator with debt they cannot service. Learn more about our approach to search fund acquisitions and how we evaluate deal mechanics before committing capital.
Frequently Asked Questions
Can a seller note replace the required down payment in an SBA acquisition loan?
Partially. Under SBA SOP 50 10 8, effective June 1, 2025, a seller note can cover up to 50% of the required 10% equity injection if it is on full standby for the entire SBA loan term. Buyers must still provide at least 5% in genuine cash equity. True zero-down acquisitions are no longer available under current SBA rules.
What interest rate is typical for a seller note in a business acquisition?
Most lower-middle-market seller notes carry rates between 5% and 8%, reflecting the seller's subordinated position and the illiquidity of holding a private business note. Rates vary based on deal price, business cash flow, and how motivated the seller is to close. There is no standard rate; everything is negotiated.
Why would a seller agree to carry a note instead of demanding full cash at closing?
Sellers carry notes for three main reasons: it expands their buyer pool, it allows installment sale tax treatment that spreads capital gains recognition across payment years, and it earns interest income on deferred proceeds. A seller willing to carry 15% to 20% of the purchase price typically signals confidence in the business they are selling.
Does a seller note have to be subordinated to the SBA loan?
Yes. Every seller note in a deal that includes an SBA loan must be formally subordinated to the SBA loan via a subordination agreement signed by the seller before closing. The SBA lender requires this as a condition of the loan. Senior debt payment takes priority over the seller note in all scenarios including business distress.
