How to Value a Small Business: A Practical Guide

Step one: find the real earnings (SDE)

Small businesses are usually valued on seller's discretionary earnings (SDE), the total financial benefit one working owner extracts per year. Start with profit, then add back the owner's salary and benefits, interest, taxes, depreciation, and genuinely one-time expenses. The result answers the buyer's real question: if I owned and ran this, what would it put in my pocket annually?

For larger businesses with real management teams, the measure shifts to EBITDA: earnings with the same add-backs but without adding back a manager's salary, because the buyer will need to pay someone to run it. Using SDE for a business that actually requires a hired manager inflates the earnings by an entire salary. That is one of the most common ways small-business listings overstate what's on offer.

The battleground is the add-backs. Legitimate ones (a true one-time lawsuit, the owner's personal truck run through the books) sharpen the picture. Aggressive ones ("marketing we didn't really need," recurring "one-time" costs every single year) quietly manufacture earnings. Every add-back is a claim that deserves evidence, and the sum of the add-backs is often where a deal's truth lives.

Step two: apply a multiple, and understand what it means

A small business generally sells for a multiple of its SDE, commonly somewhere in the low single digits, varying by industry, size, and quality. The multiple isn't arbitrary. It is the market's compressed answer to one question: how risky and durable are these earnings? It also doubles as a rough payback clock. A 3× multiple says a buyer expects roughly three years of current earnings to recover the price, before improvements or surprises.

That framing makes multiples intuitive. Earnings that are steady, documented, diversified, and not dependent on the departing owner deserve more years of confidence, and a higher multiple. Earnings that are volatile, concentrated in a few customers, or generated mostly by the owner's personal relationships deserve fewer. Same profit, very different prices, because the quality of a dollar of earnings differs enormously.

What moves the multiple up or down

Up: clean, verifiable books (tax returns and bank statements that agree with the story); recurring or contractual revenue; a broad customer base where no single account dominates; documented systems and a team that runs the business without the owner; stable or growing industry demand; transferable leases, licenses, and supplier relationships.

Down: owner dependence (the business is the seller, and their skills, license, or relationships walk out the door at closing); customer concentration (one or two accounts are most of the revenue, so the price of the business is really the price of a relationship you don't control); messy or cash-heavy books that can't be verified; declining trends dressed up as "untapped potential"; key employees who might leave; leases that expire or can't be assigned.

Notice that most of these have nothing to do with the size of the earnings. They are about whether the earnings survive the transfer. That's the heart of small-business valuation: a buyer isn't buying the past profits. They are buying the machine that's supposed to produce the future ones, minus whatever parts of the machine leave with the seller.

Verify before you value

A valuation is only as good as the numbers underneath it, and presented numbers are a hypothesis, not a fact. Basic verification: tie reported revenue to bank deposits and processor statements. Compare the profit-and-loss statements to the tax returns, since sellers rarely overstate income to the tax authority. Scrutinize every add-back. Look at monthly trends, not just annual ones, to catch a business that's sliding. Finally, confirm the customer list, contracts, and lease terms are what the listing says they are.

This is the domain of quality-of-earnings thinking, and even a lightweight version of it changes deals: a surprising share of listings can't survive having their revenue tied to actual bank records. The rule of thumb is simple: anything that can't be verified should be valued as if it isn't true.

Sanity-check with cash, not just earnings

Finally, remember that SDE and EBITDA are accounting constructs. Before trusting a valuation, sanity-check the cash: how much must be reinvested every year just to keep the machine running (equipment, vehicles, inventory)? A business whose "earnings" get consumed by constant reinvestment is worth less than the multiple math suggests. That is the logic of owner earnings, which subtracts that required reinvestment.

And run the buyer's full arithmetic: price, plus working capital to operate, plus any debt service if the purchase is financed, against conservative earnings rather than listed ones. Plenty of "fairly priced" businesses fail that last test, which is precisely the point of doing it before the wire transfer instead of after.

Key takeaways

• Small-business valuation is one structure: real owner earnings (SDE) × a multiple reflecting how risky and durable those earnings are.
• The multiple is a payback clock: steadier, verifiable, transferable earnings earn more years of confidence, while concentrated, owner-dependent earnings earn fewer.
• Add-backs are claims, not facts. Every one deserves evidence, and aggressive add-backs are where listings manufacture earnings.
• Verify before valuing: tie revenue to bank records and tax returns, and value anything unverifiable as if it isn't true.
• Sanity-check with cash: earnings consumed by required annual reinvestment aren't really available to the owner.

Frequently asked questions

What is SDE in a business sale?

Seller's discretionary earnings is the total annual financial benefit to one working owner: profit plus the owner's salary and benefits, interest, taxes, depreciation, and legitimate one-time expenses added back. It answers "what would this put in my pocket if I owned and ran it?" and is the earnings base most small-business multiples are applied to.

What multiple do small businesses sell for?

It varies widely by industry, size, and the quality of earnings: commonly in the low single digits of SDE for owner-operated businesses, higher for larger businesses valued on EBITDA. The specific number matters less than what drives it: how verifiable, diversified, transferable, and owner-independent the earnings are. Comparable recent sales in the same industry are the honest anchor.

What's the biggest mistake first-time business buyers make?

Trusting presented numbers without verification. Revenue that can't be tied to bank deposits, add-backs without evidence, and earnings that depend on the departing owner's personal relationships are the classic ways a listing overstates what's actually being sold. Verification before valuation, plus professional help on a real deal, is the defense.