"How much does it cost to buy a small business?" doesn't have a single answer, because businesses aren't priced like houses with a per-square-foot rate. They're priced as a multiple of earnings, and that multiple itself moves quite a bit depending on the size and quality of the business.
Why price is quoted as a multiple, not a dollar figure
Most small business valuations start from either SDE (seller's discretionary earnings: profit plus the owner's salary and personal expenses run through the business) or EBITDA (earnings before interest, taxes, depreciation, and amortization) once a business gets larger. The purchase price then gets expressed as a multiple of that number: a business with $300,000 in SDE at a 2.5x multiple is roughly a $750,000 deal.
This makes more sense than pricing off revenue, since two businesses with identical revenue can have very different actual profitability, and profitability, not top-line sales, is what a buyer is actually financing and repaying debt against. A $2M-revenue business with thin margins and a $2M-revenue business with healthy margins are simply not comparable deals, even though a revenue-only comparison would make them look identical.
SDE and EBITDA aren't quite interchangeable, either. SDE assumes a single owner-operator drawing a salary from the business and is more common in valuing very small businesses. EBITDA assumes the business could support a paid, non-owner manager and shows up more as deal size grows. Which one a seller or broker quotes can itself be a signal about how the business is run.
Typical multiple ranges by deal size
Multiples generally rise with deal size, and the ranges are wide enough that they're only useful as a rough starting point:
- Very small businesses (SDE under roughly $200-300K): often trade around 2-3x SDE. These businesses are typically more owner-dependent and riskier to a buyer, which caps what buyers are willing to pay.
- Small-to-mid-size businesses (SDE roughly $300K-$1M): often land somewhere around 3-4x SDE, reflecting somewhat more established operations and management structure.
- Lower-middle-market businesses (EBITDA above roughly $1M): frequently see multiples in the 4-6x range or higher, since these businesses tend to have more institutional buyer interest, more professional management, and less single-person dependency.
Multiples climb with size largely because risk drops with size: a bigger, more established business is less likely to collapse if one key employee leaves or one customer walks away, so buyers (and lenders) treat it as safer per dollar of earnings. There's also simply more competition for larger deals. Private equity firms and larger strategic buyers generally don't look at anything below a certain earnings threshold, so a small business mostly competes for buyers among other individual searchers, while a larger one competes for buyers among searchers, search funds, and institutional capital all at once.
What moves a multiple up or down within a range
Within any size band, several factors push a specific business's multiple higher or lower:
- Owner dependence. A business that runs fine without the current owner in the building every day commands a higher multiple than one that would fall apart without them.
- Customer concentration. Heavy reliance on one or two customers is a red flag that pulls multiples down, since losing that customer could gut the business's earnings.
- Growth trend. A business with a multi-year growth trend generally prices higher than a flat or declining one, even at similar current earnings.
- Recurring or contracted revenue. Subscription-like or contract-based revenue is more predictable than one-off project work, and predictability is worth paying for.
- Industry. Some industries simply attract more buyer demand (and higher multiples) than others at a given point in time, independent of any individual business's quality.
Why online listings quote a "monthly multiple"
Browse listings on an online business marketplace and you'll often see price quoted as a multiple of monthly net profit rather than annual, something you rarely see with a traditional small business. A site earning $10,000 a month at a "36x" multiple is a $360,000 asking price, the same math as a 3x annual multiple, just expressed differently. It's convention rather than a different valuation method, but it trips up buyers coming from traditional SMB acquisition who are used to annual multiples. When comparing listings, convert everything to the same basis (usually annual) before comparing them side by side.
How the multiple varies by business type
Deal size isn't the only thing that moves the multiple for an online business. The type of business matters just as much, often more, because each type carries a different risk profile:
- Content and affiliate sites tend to price lowest, often in the 2-3x annual profit range, because they carry real platform risk: a Google algorithm update or a change to an affiliate program's commission structure can hit earnings overnight, with nothing the new owner did wrong.
- E-commerce stores commonly land around 2.5-4x, with the range driven heavily by how much of the traffic and sales are owned (email list, repeat customers, brand search) versus rented (paid ads, a single marketplace like Amazon).
- SaaS products typically command the highest multiples, often 3-5x or more, because recurring subscription revenue is more predictable than a content site's ad income or an e-commerce store's one-off sales, and predictability is what buyers (and lenders) pay up for.
These ranges move for the same reasons a traditional business's multiple does: owner dependence, customer concentration, and growth trend all apply here too. A SaaS product with one customer contributing a third of revenue can price below a diversified content site, despite SaaS generally commanding a higher multiple as a category.
Putting it together: a worked example
Say a business shows $400,000 in SDE, has no major customer-concentration issues, and has grown steadily for three years but is fairly owner-dependent. That combination might land in the 3-3.5x range rather than the top or bottom of its size band, putting the purchase price somewhere around $1.2-1.4 million, before you've even started negotiating.
Treat any multiple like this as a starting point for a conversation, not a formula to apply mechanically to a business's numbers. The same SDE figure can support very different prices depending on everything else about the business, which is exactly why real due diligence, not just a multiple, is what actually tells you whether a price is fair.
It's also worth remembering that the multiple you see quoted (by a seller, a broker, or an online listing) is an asking price, not a settled fact. Multiples are a negotiating anchor as much as a valuation method, and the number that a deal actually closes at often ends up somewhat different from where it started, in either direction, depending on what diligence turns up and how the negotiation goes.
Next: once you have a sense of what things cost, it's worth understanding how to actually find a business to buy in the first place, especially one that hasn't already been shopped around to every other buyer.