Most owners assume the hard part of selling a business is finding a buyer. In practice, the harder gate is usually the lender standing behind that buyer. Almost every acquisition in the $1M–$20M revenue range is financed in part through an SBA 7(a) loan or a conventional bank facility, and both come with underwriting standards that have nothing to do with how much a buyer likes your business.
The debt service coverage ratio is the real filter
Lenders size acquisition loans around debt service coverage ratio (DSCR) — essentially, how many times over the business's cash flow can cover the new loan payment plus existing obligations. Most SBA lenders want to see a DSCR of at least 1.15–1.25x on a trailing basis, and they'll build in a cushion for a slower year. If your adjusted EBITDA is thin, inconsistent, or heavily addback-dependent, this is where deals quietly die — not at the negotiating table, but in a credit memo you never see.
Owner dependency shows up as a cash flow risk, not a soft factor
Here's the part most owners miss: a bank doesn't care whether you're a great operator. It cares whether the cash flow survives your departure. Underwriters explicitly discount projected post-close cash flow when a business shows heavy owner involvement in sales, key vendor relationships, or technical delivery — because that's exactly the scenario that produces defaults in year two, after the honeymoon period ends and the new owner realizes how much of the business left the building with the seller.
In practice, this means an underwriter is asking a narrower version of the same question your diagnostic should be asking: what happens to revenue and margin if the person selling this business disappears tomorrow? If the honest answer is "a lot breaks," expect either a lower approved loan amount, a larger seller note requirement, or an outright decline — regardless of your top-line multiple.
Customer concentration compounds the problem
A second, related flag: revenue concentrated in a small number of customers. Most conventional lenders get uncomfortable once a single customer represents more than roughly 10–15% of revenue, and SBA guidelines specifically call out customer concentration as a risk factor lenders must address in underwriting. Combine high owner dependency with high customer concentration — a common pattern in service and manufacturing businesses where the owner personally holds the key client relationships — and you've effectively doubled the discount a bank applies to your projected cash flow.
What this means before you list
The practical takeaway isn't "get a hobby and stop working in the business." It's that the 12–36 months before a sale are better spent proving the business runs without you than polishing a pitch deck. That typically looks like: documenting systems and processes so a buyer isn't relying on tribal knowledge, diversifying key customer relationships so no single account can walk out with a new owner, and building a management layer — even a thin one — that a lender can point to and say "the business doesn't depend on one person."
None of this shows up as a line item on a P&L, which is exactly why a free valuation won't catch it. A valuation prices the business as it looks on paper today. What actually determines whether that price survives underwriting is everything a bank will ask about that a spreadsheet doesn't show.
This article covers general SBA and conventional lending practices and is not a guarantee of loan approval or terms for any specific business. Every lender's credit box differs.