How to Value a Small Business: SDE, Multiples, and What Buyers Actually Pay

Ask ten people what a small business is worth and you will get ten numbers. Ask the market and you will get one. The gap between those two answers is where most deals die: sellers anchor to years of sweat, buyers anchor to risk, and the listing sits until someone gives in or gives up.

The good news is that Main Street valuation is not mysterious. Almost every small business in the $50,000 to $5 million range is priced the same way: a cash flow figure called seller's discretionary earnings, multiplied by a number the market sets for businesses like it. Learn how that math works and you can read any listing in about two minutes, whether you are the one buying or the one selling.

Here is the whole method, from the first add-back to the final sanity check.

Why SDE, not revenue

Revenue tells you how big a business is. It tells you nothing about how much money it puts in the owner's pocket. A landscaping company doing $2 million in revenue at a 5 percent margin earns less for its owner than a bookkeeping firm doing $400,000 at 50 percent. Pricing on revenue would value the landscaper five times higher for producing less actual cash.

Net income has the opposite problem. Small business owners, quite rationally, run their books to minimize taxes. The owner's salary, the family cell phone plan, the truck, the one-time legal bill, all of it flows through the profit and loss statement and drags reported profit down. Two identical businesses can show wildly different net income depending on how aggressively each owner expensed their life through the company.

Seller's discretionary earnings, or SDE, fixes both problems. It measures the total financial benefit a single full-time owner-operator gets from the business: the profit, plus the owner's own pay, plus the discretionary and one-time costs that a new owner would not inherit. It is the number that answers the only question a Main Street buyer really has: if I own this and run it, how much cash does it generate for me each year?

That is why nearly every small business sale is priced as a multiple of SDE. Larger businesses with management teams in place trade on EBITDA instead, because the buyer has to pay a manager rather than be one, but below a few million dollars in earnings, SDE is the language of the market. If the term is new to you, our primer on what SDE is and how it works goes deeper.

Computing SDE: a short example

Start with the net profit on the tax return, then add back everything that only exists because of the current owner. A clearly simplified example, with round numbers:

• Net profit per the tax return: $60,000
• Owner's salary: plus $80,000
• Owner's payroll taxes and health insurance: plus $15,000
• Owner's personal vehicle run through the business: plus $8,000
• One-time lawsuit settlement: plus $12,000
• Interest and depreciation: plus $10,000

SDE: $185,000.

The pattern is simple. A modest-looking $60,000 profit becomes $185,000 of real annual benefit to the person who owns the chair. That is the number the price gets built on, and it is why a seller who never documents their add-backs leaves money on the table: a buyer cannot pay for earnings they cannot see.

Two cautions. First, every add-back must be provable, tied to a line item, and genuinely non-recurring or owner-specific. "The business could save money if" is a projection, not an add-back. Second, SDE assumes one working owner. If the seller's spouse also works 40 unpaid hours a week, an honest calculation subtracts the market cost of replacing them.

How multiples work

Once you have SDE, the price is SDE times a multiple. The multiple is not plucked from the air. It is the market's compressed answer to one question: how risky and how durable is this stream of earnings?

For context on where the middle of the market sits, published marketplace transaction data has consistently shown that typical small businesses sell at around 2.7 times cash flow. That is a market-wide reference point, not a promise about any one deal. Individual businesses trade below 2 or above 4 depending on what they are and how they run.

Think of the multiple as a payback period. At 2.7 times, a buyer earns their purchase price back in under three years if earnings hold. The steadier and more transferable the earnings, the longer a buyer will agree to wait, so the higher the multiple. The shakier the earnings, the faster they need their money back, so the lower the multiple.

What moves a multiple up or down

Buyers pay up for the same handful of qualities in every industry:

• Recurring revenue. Contracts, subscriptions, and maintenance agreements are worth more than project work that resets to zero every January. Predictable revenue is the single strongest multiple driver.
• Low owner dependence. If the owner is the chief technician, top salesperson, and the reason customers stay, the buyer is not purchasing a business, they are purchasing a job with a resignation letter attached. A team and documented processes that run without the owner push the multiple up.
• Customer concentration. One client at 40 percent of revenue is a cliff, not a customer. Buyers discount hard for concentration and pay more for a broad base where no single account can sink the ship.
• Growth trend. Three years of climbing revenue and stable margins earns a premium. Flat is fine. Declining earnings compress the multiple faster than almost anything else.
• Clean books. Financials that tie out to tax returns, with documented add-backs, survive diligence and hold their price. Messy books do not lower the multiple so much as they lower trust, and buyers price distrust ruthlessly.

Industry matters too. A stable service business with repeat customers tends to trade above a fashion-driven retailer or a restaurant, simply because buyers judge the earnings more durable. When you browse listings, compare multiples within a category, not across the whole market.

When assets, not cash flow, set the price

The SDE method assumes the earnings are the asset. Sometimes they are not.

If a business owns significant hard assets, think trucks, machinery, or inventory, but produces thin or unreliable earnings, the cash flow method can spit out a value below what the equipment alone would fetch. In that case the floor is the asset value: what the tangible assets are worth in an orderly sale, minus liabilities. A trucking company with $900,000 of tractors and $80,000 of SDE is not a 2.5 times SDE business. It is an asset sale wearing a business costume.

The reverse also matters. In a healthy cash flow valuation, the assets needed to produce the earnings are generally understood to come with the deal. A buyer paying 2.5 times SDE for a machine shop expects the machines included, not priced on top. Sellers sometimes try to add the equipment value to the earnings-based price, which double counts, because the earnings only exist because of the equipment.

The practical rule: value the business both ways. If the earnings-based number is comfortably above the asset floor, price on earnings. If it is not, you are really pricing an asset sale, and the conversation should be honest about that.

Why asking price and closed price differ

The number on a listing is an opening position. The number on the closing statement is a negotiated fact, and the two routinely differ.

Several forces create the gap. Sellers anchor high, sometimes on hope, sometimes as deliberate negotiating room. Diligence surfaces things that reprice the deal: an add-back that does not hold up, a lease that expires next year, a customer who turns out to be a third of revenue. Financing reality bites too. If the lender's numbers do not support the price, the price moves or the deal structure does, often through a seller note or an earnout that bridges the difference.

Time also does quiet work. A listing that sits for months signals to every new buyer that the market has already voted, and offers drift down accordingly. Well-priced businesses attract offers close to asking; overpriced ones eventually sell at a discount to a number they could have listed at from day one, after burning a year.

For buyers, the lesson is that asking price is an input, not a verdict. For sellers, it is that pricing near the defensible number from the start usually nets more, faster, than pricing high and negotiating down. Our guide on how to sell a business covers the preparation that keeps a price intact through diligence.

A worked example

Put it together with a clearly illustrative case, round numbers throughout.

A residential HVAC service company shows $110,000 of net profit. The owner pays herself $70,000, runs $10,000 of personal costs through the books, and had a $10,000 one-time expense last year. SDE: $200,000.

Now the multiple. The business has about 600 maintenance agreements renewing annually, no customer over 3 percent of revenue, four technicians and an office manager who handle daily operations, and three years of gently rising revenue. Those traits argue for the upper half of the range for its category. Say the market for businesses like this runs roughly 2.5 to 3.2 times SDE. A defensible pricing range is $500,000 to $640,000, and the seller lists at $600,000.

A buyer runs their own math. They accept most add-backs but note the owner still sells all the big replacement jobs herself, a real transition risk. They model the deal at $560,000: with an SBA 7(a) loan at 10 percent down under the rules effective June 1, 2025, they would bring $56,000 of equity and finance the rest. After the annual loan payment and a manager-level salary for themselves, the remaining cash flow gives them an acceptable margin of safety. They offer $550,000, settle at $565,000 with a small seller note, and the deal closes about 6 percent under ask.

Nobody got a magic number. Both sides did the same arithmetic, disagreed a little about risk, and met where the financing worked. That is what most closed deals look like. The full financing mechanics are in our guide to SBA 7(a) loans for business acquisition.

How to sanity-check a number

Whichever side of the table you are on, test the number three ways before you act on it.

First, check it against comparables. Look at asking prices and multiples for similar businesses in the same category and size band on the open market, remembering that asking is not closed.

Second, check it against financing. A price only works if the deal cash flows after debt service. The Deal Analyzer models the loan payment, debt coverage, and cash-on-cash return at any price you enter, which makes it a fast way to find the price at which a deal stops making sense. If a business cannot support its own purchase price with a market-standard loan structure, the market will eventually tell the seller so.

Third, get an independent read on the range. The buytoprofit AI valuation tool gives you an AI estimate based on the figures you enter, for you to review yourself. It is an estimate to inform your thinking, not an appraisal, a formal valuation opinion, or advice, and it is only as good as the inputs. On any listing, remember the financial figures are provided by the seller; confirming them is what due diligence is for, as covered in our guide on how to buy a business.

If all three checks land in the same neighborhood, you can negotiate with confidence. If they scatter, the inputs are wrong somewhere, and finding out where is the real work.

When to bring in a professional

Do-it-yourself valuation is fine for screening and negotiation. Some moments call for a professional.

Bring in a CPA when the books are complicated or the add-backs are contested. An accountant who works acquisition deals can recast financials properly, defend or challenge add-backs with evidence, and model the tax consequences of how the deal is structured, which can matter as much as the headline price.

Bring in a credentialed business appraiser when the stakes or the rules require one. SBA-financed acquisitions above $250,000 generally require an independent business appraisal ordered through the lender, so if you plan to finance with a 7(a) loan, a formal appraisal is likely part of your path whether you want one or not. Formal appraisals are also the standard for divorce, estate, partner buyouts, and disputes, where a defensible written opinion matters more than speed.

Brokers and M&A advisors sit in between: they bring live market feel for what businesses like yours actually trade at, which no formula fully captures. None of this is legal, tax, or financial advice, and the right professional for your situation is a judgment call worth making early rather than late.

FAQ

What is a typical multiple for a small business? Published marketplace transaction data puts typical sales at around 2.7 times cash flow across the market. Individual businesses range well below and above that depending on industry, size, recurring revenue, owner dependence, and the quality of the books. Treat 2.7 as a landmark, not a rule.

Is SDE the same as profit? No. SDE starts with profit and adds back the owner's compensation plus discretionary, one-time, and non-cash expenses. It is almost always meaningfully higher than the net income on the tax return, and it is the figure small business prices are built on.

Does the asking price include inventory and equipment? It varies by listing and by convention in the industry. Equipment needed to generate the earnings is usually included in an earnings-based price; inventory is sometimes priced separately at cost. Always confirm what conveys before you compare two listings.

Can I rely on an online estimate? Use it as one input. The AI valuation tool produces an estimate from the figures you enter, useful for orientation and negotiation prep, but it is not an appraisal and no online tool replaces diligence or professional judgment where the stakes require them.

Who sets the final price? The market does. A valuation, however careful, is a hypothesis. The closed price is the answer, and it emerges from what a financeable buyer will pay and a willing seller will accept. If you are preparing to test that market, you can list your business confidentially when you are ready.

Sources

• SBA 7(a) loan program
• Project Equity, Silver Tsunami research