Acquisition loan structure: how the financing pieces fit together
Short answer
Most small business purchases are financed with a stack of three or four pieces: a senior loan (usually SBA 7(a)) for most of the price, a seller note, your own cash, and sometimes money from minority investors. On an SBA deal, at least 10% of the project has to be equity, a seller note counts toward that only if it's on full standby, and all the debt together can't exceed the independent valuation.
Financing an acquisition is a sorting problem. Each source of money has a cost, a priority and a set of strings attached, and on an SBA deal the program rules decide which combinations are allowed. Get the order right and a deal that looked unaffordable often works.
The capital stack, top to bottom
Senior debt
The senior lender takes the first lien and gets paid every month. For businesses priced mostly on goodwill, that's usually an SBA 7(a) loan, because the SBA guaranty lets the lender go out 10 years with only 10% down. Asset-heavy businesses, or buyers with a big equity cheque, sometimes use a conventional loan instead.
Seller financing
The seller agrees to be paid part of the price later. It shows the seller believes the business will keep earning, and it fills gaps. On an SBA deal there are two flavours, and they're treated completely differently:
- Full standby: no principal or interest payments for the whole term of the SBA loan (interest can accrue). It counts as equity, up to half of the required injection, and it's documented on SBA Form 155 or the lender's equivalent.
- Paying note: regular payments, usually subordinated to the SBA loan. It's debt. The payments go into the debt service coverage test, and the note counts toward the rule that total debt can't exceed the valuation. Under SOP 50 10 8.1, if a paying note is interest-only, the lender has to test coverage as if it amortized over no more than 10 years.
Plenty of deals use both. See SBA seller financing requirements.
Investor equity
Friends, family or a small fund can invest. On an SBA deal, an investor with less than 20% and no control is a "limited" equity source: their money can count toward the 10%, but only within the half-limit, and while it's counted they can't receive distributions except to cover taxes on the business's income until the SBA loan is repaid. Investors who want regular payouts should put in money beyond the required equity, which the lender can allow subject to covenants.
Your cash
Savings, gifts and sale proceeds of other assets. Borrowed money only counts if it's a personal loan repaid from something other than the business's cash flow, such as a loan against your home repaid from your spouse's salary. At least half of an SBA deal's required equity has to come from these "unlimited" sources.
A worked example
Illustration, not a real deal
Say you're buying a specialty food distributor for $1,800,000, with $100,000 of closing costs and fees, so total project cost is $1,900,000. The lender's valuation concludes $1,800,000. The seller agrees to carry $295,000.
| Source | Amount | Why |
|---|---|---|
| Required equity | $190,000 | 10% × $1,900,000 |
| Your cash | $95,000 | At least half of the equity |
| Seller note on full standby | $95,000 | The other half (the most it can be) |
| Seller note with payments | $200,000 | Rest of the seller's $295,000; treated as debt |
| SBA 7(a) loan | $1,510,000 | $1,900,000 − $190,000 − $200,000 |
| Total debt vs valuation | $1,710,000 ≤ $1,800,000 | SBA loan + paying note stays under the value |
The deal works on structure. The lender still has to confirm the business's historical EBITDA covers payments on both the SBA loan and the paying seller note at 1.25x. If it doesn't, the paying note can be moved toward standby (if the seller agrees), or the price comes down.
What doesn't fit on an SBA deal
- Earnouts. Prohibited. A buyer rebate if performance falls short is allowed, and it pays down the SBA loan.
- Seller staying as an owner in a first-time purchase. The seller can consult for up to 24 months but can't keep equity. (Partial buyouts are different; see partial changes of ownership.)
- Piggyback second loans. A second lender making a loan at about the same time with the SBA loan in a junior position isn't allowed.
- Debt above the valuation. If the price is higher than the valuation, the gap is equity, and any extra limited-source money used to cover it must be on full standby.
- Investors who control the business while counting toward equity. Over 20% or with control, they're owners who guarantee the loan.
Choosing the mix
Start from cash flow: work out the debt the business can carry at 1.25x, then decide how much of that goes to the senior lender and how much to a paying seller note. Fill the 10% equity with at least half cash. Use standby seller debt for the rest, and for any gap between price and valuation. If the numbers still don't close, the price is too high for SBA financing. The affordability calculator runs the first two steps for you.
Rules reflect SBA SOP 50 10 8.1 with technical updates, effective October 1, 2026.
For the buyer's walkthrough of the same pieces, see OKtoBuy's small business acquisition financing guide.
Veterans
Veterans use the same 7(a) program as everyone else, with one notable benefit in SOP 50 10 8.1: the upfront guaranty fee is waived on SBA Express loans to businesses owned and controlled by eligible veterans (and certain service members and spouses). The change-of-ownership rules don't change, so a veteran buying a business still needs 10% equity, 1.25x historical coverage and a valuation that supports the price.
Plenty of veterans buy businesses after service, and many lenders actively look for them. The SBA benefit is narrower than the marketing suggests, but it's real on smaller deals.
The fee waiver, in numbers
SBA's upfront guaranty fee is charged on the guaranteed portion. On SBA Express the guaranty is 50%. Here's what the waiver saves at the maximum fee rates, assuming SBA hasn't announced different fees for the fiscal year:
| Express loan | Guaranteed (50%) | Maximum fee rate | Fee waived |
|---|---|---|---|
| $150,000 | $75,000 | 2% | $1,500 |
| $300,000 | $150,000 | 3% | $4,500 |
| $500,000 | $250,000 | 3% | $7,500 |
Useful, not decisive. The bigger questions are the same ones every buyer faces: does the business's cash flow cover the debt, does the valuation support the price, and is the equity in place.
What's the same for veterans
- 10% equity on an Initial Acquisition, with up to half from a standby seller note.
- Historical debt service coverage of at least 1.25x.
- Independent valuation above a $350,000 Business Purchase Price; QoE at $3 million and up.
- Seller exits, consulting up to 24 months; no earnouts.
- Personal guaranty from every 20%+ owner; citizenship rules for all owners.
Lenders often see military leadership as a strength in the management section of the credit memo, especially when paired with a plan for industry-specific know-how (a key employee who stays, a seller consulting agreement, or training).
Deal size decides the product
If the total financing need is under $500,000, ask lenders with Express authority whether they'll do the acquisition as Express to capture the waiver. Some prefer the higher guaranty of 7(a) Small; it's worth comparing the waived fee against any pricing difference. Above $500,000, it's Standard 7(a). See SBA Express vs 7(a) and the full guide to SBA acquisition loans.
Fee details reflect SOP 50 10 8.1 with technical updates, effective October 1, 2026. SBA can announce fee changes for a fiscal year; confirm with your lender.
Common questions
What's the most common way to finance buying a small business?
An SBA 7(a) loan for the bulk of the price, plus buyer cash and often a seller note. Larger or asset-heavy deals more often use conventional bank debt.
Can investors put money into an SBA-financed acquisition?
Yes. Minority investors with under 20% and no control can provide part of the required equity, but together with standby debt they can cover no more than half of it, and they can't take distributions beyond tax payments until the SBA loan is repaid.
Does a seller note have to be on standby?
Only if you want it to count as equity. A seller note that receives payments is allowed, but it's treated as debt: it goes into the coverage test and counts against the valuation cap.
Can I use an earnout to bridge a price gap on an SBA deal?
No. SOP 50 10 8.1 prohibits seller earnouts in SBA change-of-ownership transactions. Buyer rebates based on performance are allowed and must pay down the SBA loan.
Who qualifies for the SBA Express veteran fee waiver?
Under SOP 50 10 8.1, businesses owned and controlled by a veteran (other than one with a dishonorable or bad conduct discharge), service-disabled veterans, active duty members in the Transition Assistance Program, and the spouse of a veteran or active duty member, or the widowed spouse of a service member who died in service or of a service-connected disability.
Related guides
Sources
This guide explains rules and practice in plain English. It isn't legal, tax or credit advice, and SBA and IRS rules change. Check the current SOP, regulations and your lender's requirements before you rely on anything here. Examples with made-up businesses are illustrations, not real deals.