Most buyers hear “seller note” and assume it means the seller is being generous. Sometimes that is true. But the second lien seller note that shows up in SBA 7(a) acquisitions is a specific instrument with specific rules, and getting the structure wrong will sink your deal before you ever reach the closing table.
It is also one of the most powerful tools buyers have for reducing out-of-pocket cash at close and protecting debt service coverage. And yet most first-time buyers either misunderstand how it works or leave money on the table by not negotiating it properly.
Here is how the second lien seller note actually works, what SBA lenders expect, and how to structure it so the math holds up.
What Is a Second Lien Seller Note?
A second lien seller note is a portion of the purchase price that the seller finances directly. It is structured as a subordinated loan sitting behind the SBA 7(a) lender in the capital stack. The SBA lender holds first lien position on the business assets. The seller’s note sits in second position.
If the business were to default, the SBA lender gets paid out first. The seller gets whatever is left, which in a liquidation scenario is often not much.
That sounds like a raw deal for the seller, and in some ways it is. But this is a standard feature of SBA acquisitions. Most lenders require some form of seller participation in the financing. It is baked into how these deals get done.
Why SBA Lenders Want a Seller Note in the Deal
Here is something most first-time buyers do not know going in: many SBA lenders will not approve a deal unless the seller participates in the financing. Not “prefer.” Will not approve.
The reasoning is straightforward. A seller willing to carry a note has skin in the game. They are not walking away with 100% of the purchase price on day one. That signals confidence in the business. It also means the seller has a financial incentive to cooperate during transition, answer your calls six months post-close, and generally make sure you do not fail.
From an underwriting standpoint, seller note participation is a quality signal. It tells the lender the seller genuinely believes the business will continue to perform after the ownership change. And it reduces the lender’s exposure. A $2M deal where the seller carries $200K is a different risk profile than one where the SBA is financing the entire gap between the buyer’s equity injection and the purchase price.
We have seen lenders walk from deals where the seller refused any note participation, even when the DSCR and buyer qualifications were strong. That is how seriously some credit committees take this.
How the Second Lien Seller Note Gets Structured
The standard structure we target on every deal is a 10-year full standby, 0% interest seller note. We achieve that on more than 90% of our deals.
Related: Quality of Earnings Report: What Buyers Must Know
Full standby means no principal and no interest payments from the buyer to the seller for the entire standby period. That period is usually the full term of the SBA loan, typically 10 years.
0% interest means the seller earns nothing on the note beyond repayment of the face amount. No accrual. No balloon. Zero.
This structure is aggressive in the buyer’s favor. Not every seller accepts it on first offer, and some push back hard. But it is achievable, especially when the seller is motivated, the deal is well-structured, and the buyer has an advisor who knows how to frame the conversation (more on that below).
The size of the seller note varies. A common range is 5% to 15% of the purchase price, depending on the deal, the lender’s requirements, and the equity injection picture. On a $1.5M acquisition, a 10% seller note means $150K. At full standby, that is $150K you are not paying out of pocket at closing and not servicing during the SBA loan term. That is real money back in your pocket for working capital or reserves.
How the Seller Note Affects Your DSCR
This is where buyers get tripped up, and where the difference between full standby and other note structures becomes critical.
Debt service coverage ratio is the metric SBA lenders use to determine if the business generates enough cash flow to cover the loan payments. The minimum at the lender level is 1.25x. We target 2x at the deal level and will move forward with synergies down to 1.5x. Below that, the deal is too thin.
Because a full standby seller note has no payments during the standby period, it does not count against your DSCR calculation. That single fact changes the math on a lot of deals.
Say you are looking at a $1.5M acquisition. You have run the seller’s numbers through proof of cash, discounted the broker-provided SDE by 25% to get to real adjusted cash flow (because SDE as reported is almost always inflated, typically by 15% to 50%, and you cannot underwrite a deal on a number you have not verified), and you land on roughly $300K in actual owner benefit. If the seller carries $150K as a full standby note and you put up 10% equity injection of $150K, your SBA loan is $1.2M. The debt service on $1.2M over 10 years at current rates is going to be significantly lower than on $1.35M. Your DSCR improves, and maybe the deal clears underwriting where it otherwise would not.
Related: Business Acquisition Down Payment Sources
Now contrast that with a partial standby or an active seller note requiring current payments. If the seller note is paying down during the SBA loan term, it shows up as debt service. That reduces your DSCR and can sink the deal’s approval.
Full standby is not just buyer-friendly. It is often the only way to make the numbers work.
Second Lien vs. Other Seller Note Structures
Not all seller notes work the same way. It helps to understand where the second lien, full standby structure fits relative to the alternatives.
| Structure | Position | Payments During SBA Term | DSCR Impact |
|---|---|---|---|
| Second lien, full standby | Behind SBA | None | None |
| Second lien, partial standby | Behind SBA | Interest only or deferred principal | Reduces DSCR |
| Second lien, active repayment | Behind SBA | Full principal and interest | Significantly reduces DSCR |
| Earnout structure | Not a lien | Contingent on performance | Varies |
Full standby is almost always the target. Partial standby can work if the debt service impact still clears underwriting. Active repayment seller notes in SBA deals are rare because they tend to kill the DSCR math.
When you see a deal where the seller insists on current payments from their note, that is a negotiation point. Not a fixed requirement. Push back. Structure matters more than the headline price, and we have watched sellers come around on standby terms when the alternative is losing a qualified buyer entirely.
Negotiating the Note Terms with the Seller
Sellers often resist the full standby structure initially. Their concern is straightforward: they want their money.
What helps is framing. A full standby note is not a gift. It is deferred payment. The seller still receives the full face value at the end of the term. They are not forgiving the debt. They are extending it.
For sellers who built the business over 20 years and plan to retire on the proceeds, explaining that the note will be repaid in full on a longer timeline often addresses the core objection. Side note: this conversation also tends to go better when the seller’s broker has already been educated on how SBA deal structures work. If the broker is pushing for all-cash-at-close terms, you are fighting two battles at once.
Related: Seller Financing Amortization: How It Actually Works
What does not work is trying to negotiate note structure during the LOI phase without any framing. The conversation needs to happen early. And it needs to be positioned as a standard feature of SBA financing, not a buyer-specific ask. Because it is standard. This is how these deals get done.
Second Lien Seller Notes and SBA Rules
SBA has specific requirements around seller note structure in 7(a) deals, and this is where the details matter.
If the seller note is on full standby, SBA generally allows it to count toward the equity injection requirement, up to certain limits defined in the SBA’s Standard Operating Procedures. That is significant. In some deal structures, a seller note on full standby can satisfy a portion of the 10% equity injection minimum, which directly reduces how much cash the buyer needs to bring to the table.
Your SBA lender will dictate what they accept. Not every lender interprets the SOP the same way, and the rules have nuances that change how deals get packaged. Work with your lender and your advisor to confirm what counts in your specific deal. Getting this wrong means showing up to closing short on equity, which is not a problem you want to solve at the last minute.
The broader point is this: the second lien seller note is not just a negotiation tool. It is a structural element that interacts with SBA lending rules, DSCR calculations, and your total cash-at-close picture. Getting the structure right touches every part of the deal.
Frequently Asked Questions
What is a second lien seller note in an SBA deal?
A second lien seller note is a portion of the purchase price the seller finances directly, structured as a subordinated loan behind the SBA lender in the capital stack. The SBA lender holds first lien on the assets. Because it sits in second position, the seller takes on more risk, which is why buyers with strong advisors can often negotiate favorable terms like 0% interest and full standby.
Does a seller note on full standby count toward the SBA equity injection?
In many SBA 7(a) deals, a seller note structured on full standby can count toward the minimum 10% equity injection requirement. This varies by lender and deal structure. The SBA’s Standard Operating Procedures permit this in certain circumstances, but your lender will confirm what qualifies. It is one of the reasons full standby structure is so valuable to buyers.
Can I negotiate a 0% interest seller note?
Yes. A 0% interest, full standby seller note is the standard structure we target on acquisitions. We achieve it on more than 90% of deals. It requires the right framing with the seller, deal context that supports it, and an advisor who knows how to position it during negotiation. Not every seller agrees immediately, but it is a realistic and common outcome in SBA-financed acquisitions.
How does a second lien seller note affect my debt service coverage ratio?
A seller note on full standby has no payment obligation during the standby period, so it does not reduce your DSCR. This is critical for SBA underwriting. A seller note with active repayment requirements does count as debt service and will lower your coverage ratio, potentially preventing loan approval. Full standby protects your DSCR.
What happens to the seller note if the business fails?
If the business defaults, the SBA lender in first lien position gets paid from asset liquidation first. The seller, holding the second lien, receives whatever remains. In practice, this often means the seller recovers little or nothing, which is why sellers in second position take on meaningful risk. Buyers should be honest about this tradeoff while making the case that a properly underwritten acquisition should not end in liquidation.
Thinking About Acquiring a Business with SBA Financing?
Regalis Capital runs a done-for-you acquisition advisory service. We source deals, build the debt service models, negotiate seller note terms, and manage the SBA process from first conversation through close.
If you are serious about buying a profitable business and want a team that has structured hundreds of these deals, start here.