Roughly 70% of the small-business acquisition deals that land on my desk have the same problem: the asking price is a multiple of earnings that feels reasonable in a vacuum but produces debt service the business cannot support. The seller isn't being greedy. The broker isn't being sloppy. Nobody just ran the SBA math first.
Here's how to do that — before the listing goes live.
Why does asking price kill SBA deals more than buyer credit does?
An SBA 7(a) lender is not primarily underwriting the buyer. They're underwriting the cash flow of the business. The approval question isn't "Is this borrower creditworthy?" — it's "Can this business service the proposed debt at the proposed price?" If the answer is no, the deal dies in underwriting regardless of how strong the buyer looks on paper.
The most common miss I see: a business listed at 3× SDE (seller's discretionary earnings) where the seller is addback-heavy — owner salary, vehicle, phone, discretionary travel — and adjusted EBITDA after a market-rate replacement manager salary is materially lower than the headline number. The multiple looks modest. The actual debt coverage doesn't work.
What DSCR threshold does an SBA lender actually require?
Most SBA lenders require a minimum global debt service coverage ratio (DSCR) of 1.25x — meaning the business must generate $1.25 in cash flow for every $1.00 of annual debt payments. Some lenders will go to 1.15x on stronger credits; a few preferred lenders want 1.35x as their floor. For acquisition underwriting, assume 1.25x as your working number.
Global DSCR matters here. That means the lender is looking at all obligations: the new acquisition debt, any existing debt the buyer carries personally, and any real estate debt that comes with the deal. A buyer who already owns a commercial building with a mortgage just got their coverage ratio squeezed before the acquisition loan even hits the calc.
How do you run the debt service math before setting a price?
Work backwards from the business's verified cash flow. This is a four-step calculation:
Start with adjusted EBITDA — not SDE. SDE adds back owner salary and is appropriate for sole-operator businesses where the buyer is stepping into that role. If the business requires a replacement manager (revenue above ~$1.5M, or the buyer is semi-absentee), use EBITDA after a realistic market-rate management salary. That number is often $60,000–$90,000 lower than the SDE figure on the CIM.
Calculate the maximum supportable annual debt service. Divide adjusted EBITDA by 1.25 (your DSCR floor). A business with $300,000 adjusted EBITDA can support a maximum of $240,000 in annual debt service ($300,000 ÷ 1.25).
Back into the loan amount from that payment. A 10-year SBA 7(a) term at today's rates (prime + 2.75%, fully variable, though some lenders offer fixed or mixed structures) produces a monthly payment of roughly $11,000–$12,000 per $1,000,000 borrowed depending on rate. At $240,000 annual debt service capacity, you're looking at a loan ceiling in the $1.9M–$2.1M range — not a dollar more.
Add the buyer's equity injection to get the maximum supportable price. SBA 7(a) acquisitions typically require 10% equity injection (SOP 50 10 8). If the max loan is $2.0M and the buyer brings 10%, maximum supportable price is approximately $2.22M. Seller note or earnout? That debt counts too — the note payment gets added to annual debt service in step 2, which compresses the bank loan further.
Run this math on any business before you agree on a listing price, and you will know instantly whether the deal is financeable.
What multiple does that produce, and how does it compare to broker benchmarks?
The table below shows supportable price at 1.25x DSCR across adjusted EBITDA levels, assuming a 10-year 7(a) loan at a blended ~9.5% rate and 10% buyer equity injection.
| Adjusted EBITDA | Max Annual Debt Service | Max SBA Loan | Max Price (10% equity) | Implied Multiple |
|---|---|---|---|---|
| $150,000 | $120,000 | ~$940,000 | ~$1.04M | 6.9× |
| $250,000 | $200,000 | ~$1.57M | ~$1.74M | 7.0× |
| $400,000 | $320,000 | ~$2.51M | ~$2.79M | 7.0× |
| $600,000 | $480,000 | ~$3.77M | ~$4.19M | 7.0× |
Notice the multiple clusters around 6.5×–7.0× adjusted EBITDA at a 9.5% rate. When rates were at 6%, that same math supported multiples closer to 9×–10×. This is why deals that penciled in 2021 don't pencil today: the business didn't change, the rate environment did.
Brokers pricing on trailing comps from 2020–2022 without adjusting for current rate levels are setting their sellers up for a failed process.
Does the SBA loan term affect what a buyer can pay?
Yes, and the lever is significant. The SBA 7(a) program allows up to 10 years on a business acquisition (no real property) and up to 25 years when real estate is included. Stretching from 10 to 25 years on a deal that includes real estate can reduce annual debt service by 25–30%, meaningfully expanding the supportable price.
A $5M deal that's tight at 10 years (business-only) may work comfortably at 25 years if $2M of the purchase price is allocable to real property financed under SBA 504 or a 7(a) real estate tranche. Deal structure isn't just paperwork — it directly affects whether the price is bankable.
What about seller notes — do they help or hurt affordability?
Seller notes help with the equity injection requirement but hurt debt service coverage. Here's the nuance:
- If the note is on full standby (no payments for the life of the SBA loan), most lenders will treat it as equity for injection purposes and exclude it from the DSCR calculation entirely. This is the cleanest version: seller carries a note, buyer gets credit for injection, coverage ratio is unaffected.
- If the note requires current payments, those payments are added to annual debt service. A $300,000 seller note at 6% over 5 years adds roughly $70,000/year to the debt service stack — which at 1.25× DSCR requires an additional $87,500 of adjusted EBITDA to support. That's not nothing.
Sellers who want a partial note to close the price gap should expect the lender to require standby terms. Sellers who insist on current payments should expect the buyer's maximum bid to drop accordingly.
What's the right conversation to have before a listing agreement is signed?
Three questions every broker and seller should answer before setting price:
- What is adjusted EBITDA after a market-rate management salary — not SDE?
- At today's rates, what does 1.25× DSCR allow as a maximum loan, and therefore a maximum price?
- Is there real estate in the deal that could extend the term to 25 years and expand the supportable price?
If the seller's target price exceeds what the math allows, the options are: accept a lower price, accept a full-standby seller note for the gap, or wait for rates to drop. Those are honest options. What isn't an option is listing at a price that no SBA lender will approve and hoping a motivated buyer finds a way.
In my experience, the deals that close cleanest are the ones where someone ran this math at the kitchen table before the business ever went to market.