How to Value a Small Business in 2026 (SDE, Multiples, and What Moves the Number)

Valuing a small business comes down to two numbers: a normalized earnings figure and a market multiple, and getting both right. The earnings figure for most small businesses is SDE (Seller’s Discretionary Earnings), what the business really generates for a single owner-operator once you strip out the owner’s pay and personal spending. The multiple comes from what comparable businesses actually sold for, adjusted up or down for risk and quality. This guide walks through the SDE method step by step, gives realistic multiple ranges, explains what moves the number, and works an example, so you can produce a defensible range instead of a guess.

We’re CT Acquisitions, a buy-side M&A advisory firm, the ranges and multiple drivers here reflect the transactions we work on and our network of 100+ active capital partners. For a sector-adjusted number in 90 seconds, use our free valuation tool; for more depth, see our valuation resources, multiplier guide, valuation template, and our companion guide on how to calculate a business valuation.

The short version

For most small businesses, the value is: normalized SDE × market multiple = enterprise value, then add cash, subtract debt, adjust for working capital, to get equity value (what the owner receives, before structure and taxes). Larger small businesses with a management layer use EBITDA instead of SDE (and higher multiples). Here’s the whole thing in one table:

Step 1: Calculate SDE (the most important step)

SDE represents the total financial benefit a single owner-operator gets from the business. Start with reported pre-tax profit, then add back:

• The owner’s compensation and benefits, full salary, payroll taxes on it, health insurance, retirement contributions, for one working owner. (If there are multiple owners, typically add back one and treat the others as employees, or adjust to a single market-rate manager.)
• Personal expenses run through the business, personal vehicles, personal travel, cell phones, meals, family members on payroll who don’t actually work there, and other discretionary spending. Document each one, undocumented add-backs get rejected in diligence.
• One-time / non-recurring items, a lawsuit settlement, a one-off consulting fee, moving costs, pandemic-era anomalies, anything that won’t recur for a new owner.
• Non-cash charges, depreciation and amortization.
• Interest, on owner-related debt (the buyer will have their own financing).

Also adjust down for things that should be expensed but aren’t, if the owner pays themselves nothing, or charges below-market rent in a building they own, a buyer will normalize the other way. The result is your SDE. Use a 3-year history and weight recent years more; one anomalous year shouldn’t drive the number.

Step 2: Choose a market multiple

The multiple comes from comparable transactions, what businesses like yours actually sold for, expressed as a multiple of SDE. Broad reference points (these vary widely by sector; see our multiplier guide):

Sector matters a lot: recurring-revenue businesses (managed IT, alarm monitoring, subscription services), high-growth software, and certain professional-services niches command premiums; commoditized, low-margin, or highly cyclical businesses trade lower. The size table above is the starting band; the sector adjusts it; then your specific business’s risk and quality place you within (or beyond) it.

Step 3: Adjust the multiple for what actually moves it

Owner dependency and recurring revenue are usually the two biggest swing factors, each can move the multiple by roughly half a turn to a turn and a half. That’s also why they’re the highest-leverage things to fix before a sale.

Rules of thumb: use carefully, then throw away

Industry rules of thumb, “a [type of business] sells for X times monthly revenue,” or “Y times SDE plus inventory,” are starting points for a sanity check, not valuations. They ignore everything that actually drives value: your recurring revenue, your concentration, your owner dependency, your growth, your margins. Use them to see if your number is roughly in the right zip code, then ignore them. Anyone valuing a business solely on a rule of thumb is guessing.

Worked example

A residential HVAC service company: reported pre-tax profit $210K. Add back owner’s salary and benefits $140K, personal truck and travel $22K, a one-time legal cost $15K, and D&A $40K → normalized SDE ≈ $427K. The business is owner-operated but has a capable lead tech and dispatcher who’ll stay; ~40% of revenue is recurring maintenance agreements; the largest customer (a property manager) is ~9% of revenue; revenue grew ~10% last year; margins are around sector average; books are clean. HVAC SDE multiples in this size band run roughly 2.5x-4x; the recurring base, low concentration, clean books, and key-employee stability push toward the upper-middle, call it ~3.5x. Enterprise value ≈ $427K × 3.5 ≈ $1.49M. With ~$50K cash, ~$120K of equipment debt, and normal working capital, equity value lands roughly $1.42M, before deal structure and taxes. A sector-adjusted tool or a sell-side advisor would put the defensible range around $1.3M-$1.6M.

How we know this: the ranges, timelines, and dynamics on this page come from the transactions we’ve worked on and the buyer mandates in our network of 100+ active capital partners. They’re informed starting points, not guarantees, your actual outcome depends on the specifics of your business and your situation.

How to get a number you can rely on

Do the SDE math carefully (this is where most DIY valuations go wrong, sloppy or aggressive add-backs), use a sector-appropriate multiple, adjust honestly for the risk factors, and bridge to equity value. Then validate it: for a sale, use a sector-adjusted estimate (our free 90-second tool applies industry multiples and risk adjustments) or an indicative valuation from a sell-side advisor; for tax, divorce, disputes, or ESOPs, get a credentialed appraisal (ASA, ABV, CVA). For more depth, see our valuation resources, multiplier guide, valuation template, sample valuation report, and the companion guide on how to calculate a business valuation. And when you’re ready to test the number against real buyers, that’s a sell-side process, with the buyer-paid model, you pay no advisory fee; see our broker alternative guide.

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Frequently asked questions

How do you value a small business?

Use the SDE method: calculate Seller’s Discretionary Earnings, the business’s pre-tax profit plus the owner’s salary and benefits, plus personal expenses run through the business, plus one-time items, plus depreciation and amortization, then multiply that normalized SDE by a market multiple for the industry and size (typically around 2x-4.5x for most small owner-operated businesses). Then add cash, subtract debt, and adjust for working capital to reach equity value. Larger small businesses with a management layer use normalized EBITDA and higher multiples instead. The multiple moves most on recurring revenue, customer concentration, owner dependency, growth, and margin trends.

What is SDE and how do I calculate it?

SDE (Seller’s Discretionary Earnings) is the total financial benefit a single owner-operator gets from a business. Calculate it by starting with reported pre-tax profit and adding back: the owner’s full compensation and benefits; personal expenses run through the business (personal vehicles, travel, phones, non-working family on payroll); one-time, non-recurring items; depreciation and amortization; and interest on owner-related debt. Adjust downward for things that should be expensed but aren’t, such as below-market owner pay or below-market rent in an owner-owned building. Use a 3-year history, weighting recent years, and document every add-back, because undisclosed ones get struck in diligence.

What multiple does a small business sell for?

Most small owner-operated businesses sell for roughly 2x to 4.5x SDE, with very small or higher-risk businesses lower (~1.5x-3x) and stronger businesses or premium sectors higher. Once a business has a real management layer it’s typically valued on EBITDA at a higher multiple (~3.5x-6x for $1M-$3M of earnings, ~5x-8x+ for $3M+). Sector matters a lot, recurring-revenue businesses, software, and certain professional-services niches command premiums, while commoditized, low-margin, or cyclical businesses trade lower. Within the band, your specific recurring revenue, customer concentration, owner dependency, growth, and margins determine where you land.

What factors increase the value of a small business?

The biggest levers: a high percentage of recurring/contracted revenue; low customer concentration (no customer over ~10-15%); low owner dependency (the business runs without you, with a capable team in place); consistent growth (15%+ is meaningful); above-sector, stable or improving margins; clean accrual financials with documented add-backs; and a resilient, defensible end market. Owner dependency and recurring revenue are usually the two largest swing factors, each can move the multiple by roughly half a turn to a turn and a half, which is why reducing owner dependency and growing recurring revenue are the highest-leverage things to do before a sale.

Are business valuation rules of thumb accurate?

No, treat them as rough sanity checks, not valuations. Rules of thumb like ‘a [type of business] sells for X times monthly revenue’ or ‘Y times SDE plus inventory’ ignore everything that actually drives value: recurring revenue percentage, customer concentration, owner dependency, growth trajectory, and margin trends. Two businesses in the same industry with the same revenue can be worth very different amounts. Use a rule of thumb to check whether your number is roughly in the right range, then discard it and do the real analysis, normalized earnings times a properly adjusted multiple.

How much is my small business worth?

It depends on your normalized SDE (or EBITDA) and the right multiple for your industry, size, and risk profile, but as a rough orientation, most small owner-operated businesses land around 2x-4.5x SDE, adjusted for recurring revenue, customer concentration, owner dependency, growth, and margins, then bridged to equity value with cash, debt, and working-capital adjustments. For a specific, sector-adjusted number, use our free 90-second valuation tool, which applies industry multiples and risk adjustments; for tax, divorce, dispute, or ESOP purposes, get a credentialed appraisal instead.

Do I need a professional to value my small business?

It depends on the purpose. For preparing to sell, a sector-adjusted estimate (from a tool like ours) or an indicative valuation from a sell-side advisor is usually enough to set expectations, the actual price is set by what qualified buyers will pay through a competitive process. For estate or gift taxes, divorce, shareholder or partner disputes, ESOPs, or certain SBA loans, you need a credentialed appraiser (ASA, ABV, or CVA) producing a formal report that will withstand scrutiny. Many owners do the informal version first and commission a formal appraisal only when the situation requires one.

What is the difference between SDE and EBITDA for valuing a small business?

SDE adds back one working owner’s entire compensation and benefits plus personal expenses, it represents the total benefit to a single owner-operator, and is used for smaller, owner-run businesses. EBITDA adds back only owner compensation above what a hired manager would cost, it assumes professional management is in place, and is used for larger businesses with a real management layer. For the same business, SDE is a larger number than EBITDA, so SDE multiples are lower than EBITDA multiples; you can’t mix them. As a rough rule, businesses under roughly $1M of normalized earnings are usually valued on SDE; above that, on EBITDA.

Related research

• Free Business Valuation Tool, your business is worth in 90 seconds
• The Business Broker Alternative Guide (national pillar)
• Business Brokers by State, with a free alternative
• The Complete Guide to Selling Your Business in 2026
• What’s My Business Worth? Founder’s Valuation Guide
• Who Buys These Companies? Buyer Types Explained
• How to Sell to Private Equity, A Founder’s Walkthrough
• Owner’s Pre-Exit Checklist, 90 Days Before You List
• CT Commentary, Founder & M&A Insights