Small Business Valuation Methods: How to Value a Small Business

Most US small businesses are valued one of three ways: a multiple of Seller's Discretionary Earnings (SDE), a multiple of EBITDA, or the value of their assets — and for owner-operated companies under roughly $1M in profit, an SDE multiple is by far the most common. The method you use depends on the size of the business and what a buyer is really paying for. A single-location restaurant, plumbing shop, or e-commerce brand run by the owner is almost always priced on SDE (owner earnings) times a multiple of 2 to 4. A larger company with a management team in place — where the owner isn't doing the daily work — shifts to an EBITDA multiple, typically 3 to 6 for lower-middle-market firms. And a business whose value lives mostly in equipment, inventory, or real estate (rather than profit) is valued on its assets. Below we walk through each method, show a realistic worked example, and give you a decision framework for choosing the right one — because using the wrong method can swing a valuation by six figures.

The three core valuation methods (and when each applies)

Valuation is not one formula. It's a family of methods, and the right one depends on who your buyer is and where your value comes from. Here's the practical breakdown.

1. Earnings-based: SDE and EBITDA multiples

This is how the overwhelming majority of profitable small businesses are valued. You start with a normalized earnings figure, then multiply it by a market multiple.

• SDE (Seller's Discretionary Earnings) is used for owner-operated businesses — typically those doing under about $1M in earnings. SDE = net profit + owner's salary + owner's perks + interest + taxes + depreciation + amortization + any one-time expenses. The idea is to show a new owner-operator the full economic benefit of owning the business, as if they replaced the current owner.
• EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) is used for larger businesses where the owner is not the operator. EBITDA does not add back an owner's salary, because a buyer will have to pay a manager to run it. That single difference is why the same company can look very different depending on which figure you lead with.

2. Asset-based valuation

Here the business is worth the fair market value of what it owns minus what it owes. This applies when a company's profit doesn't justify a premium — think a heavy-equipment operation, a business being liquidated, or a holding company. It sets a floor: a profitable business should never sell for less than its clean, sellable assets.

3. Market-based (comparable sales)

This method looks at what similar businesses actually sold for — the same way homes are appraised by comps. In practice it's less a standalone method and more the thing that sets the multiple in the earnings-based methods. Broker databases and industry benchmarks tell you whether HVAC companies in your revenue band trade at 2.5x SDE or 3.5x SDE.

For most owners reading this, the honest answer is: your business will be valued on an earnings multiple, with the asset value acting as a floor and comparable sales setting the multiple.

How to calculate SDE — the number that matters most

Because SDE drives the value of most small businesses, it's worth getting right. Buyers and their lenders scrutinize this number, so sloppy math costs you real money at the table.

Start with your net profit from the tax return, then add back everything that is either non-cash, discretionary, or specific to the current owner:

• Owner's salary and payroll taxes — the compensation for one working owner.
• Owner perks — personal vehicle, health insurance, phone, travel, meals run through the business.
• Interest expense — a buyer's financing will look different than yours.
• Depreciation and amortization — non-cash accounting entries.
• One-time or non-recurring costs — a lawsuit, a flood repair, a relocation, a website rebuild.

What you cannot add back: a second owner's salary if two owners genuinely work in the business, ongoing rent, real recurring expenses, or a manager's pay if the buyer will still need that manager. Aggressive add-backs are the fastest way to lose a buyer's trust — and once trust goes, so does the multiple.

The cleaner and more documented your add-backs, the higher and more defensible your SDE, and the higher your final price. This is why sellers who prepare their books 12 months before selling almost always net more.

A realistic worked example

Let's value a single-location HVAC and plumbing company. These are illustrative figures, for example only — your business will differ.

Now apply a market multiple. Skilled-trades businesses with recurring service revenue and a clean customer base often trade around 2.5x to 3.5x SDE. At a 3.0x multiple, the business is worth roughly $741,000 (for example). At 2.5x it's about $618,000; at 3.5x it's about $865,000.

That spread — nearly a quarter of a million dollars — is decided by the multiple, and the multiple is decided by risk factors most owners can actually control: customer concentration, how dependent the business is on the owner, recurring vs. one-time revenue, the quality of the books, and the trend line of the last three years.

What actually moves your multiple up or down

Two businesses with identical SDE can sell for wildly different prices. The earnings figure sets the base; the multiple reflects risk. Buyers pay more for predictable, transferable cash flow and less for anything they'll have to fix.

Factors that raise the multiple

• Recurring revenue — service contracts, subscriptions, or repeat customers rather than one-off jobs.
• Low owner dependence — a business that runs without the owner in the truck every day is worth more, because it's transferable.
• Diversified customers — no single client is more than ~10-15% of revenue.
• Clean, current financials — tax returns, P&Ls, and bank statements that reconcile.
• Growth trend — three years of rising revenue and margins.

Factors that lower the multiple

• Customer concentration — one client at 40% of revenue is a discount, every time.
• Owner-as-the-business — if the relationships, the skill, or the sales all live with the owner, the buyer is buying a job, not an asset.
• Declining or lumpy revenue.
• Messy books — cash under the table might feel like it helps you at tax time, but it destroys value at sale because you can't prove the earnings.

The single highest-return project most owners can do before selling is reducing owner dependence and cleaning up the financials. Both directly lift the multiple, and the multiple is applied to every dollar of SDE.

Decision framework: which method fits your business

Use this to choose your primary method and avoid mispricing.

Use an SDE multiple when…

• The owner works in the business daily.
• Earnings are under roughly $1M.
• Your likely buyer is an individual owner-operator or a first-time buyer using an SBA loan.
• Most of the value is in cash flow, goodwill, and customer relationships — not hard assets.

Use an EBITDA multiple when…

• A management team runs the business without the owner.
• Earnings are above roughly $1M–$2M.
• Your likely buyer is a private-equity group, strategic acquirer, or a company rolling up your industry.

Use asset-based valuation when…

• The business owns significant equipment, inventory, or real estate relative to its profit.
• Profit is thin, breakeven, or negative.
• You're liquidating, or the asset floor is higher than the earnings-based value.

Avoid these methods when…

• Avoid EBITDA for a business where the owner does the work — it overstates value by hiding the cost of replacing the owner.
• Avoid SDE for a large, absentee-owned company — it understates value by treating a management-run business like an owner-operated one.
• Avoid pure asset value for a profitable, low-asset service business — it ignores the goodwill and cash flow that a buyer is actually paying for.

When two methods disagree, the higher of the earnings-based value and the asset value usually wins for a healthy, profitable business — the assets are the floor, and the earnings are the reason someone buys.

How financing and cash flow shape the number

Valuation isn't just an academic exercise — it collides with reality when a buyer tries to fund the purchase. A price a buyer can't finance isn't really a price; it's a wish. Two cash-flow realities drive most deals.

Debt-service coverage. Lenders — including SBA lenders — size the deal to whether the business's cash flow can comfortably cover the loan payments and still leave the new owner a living. If your asking price requires debt the cash flow can't support, the deal stalls regardless of what a spreadsheet says the business is worth. This is why demonstrable, well-documented cash flow is the foundation of both a high valuation and a closeable one.

Working capital and growth capital. Whether you're preparing a business to sell at a premium or you've just bought one and need to fund inventory, payroll, and growth through the transition, access to capital based on revenue and bank-deposit history — rather than a single credit score — is often what keeps operations smooth. For many owners, a revenue-based financing marketplace is a practical fit: approval decisions lean on your deposits and revenue rather than credit alone, with financing typically available from about $10,000, FICO 500+ considered, and funding in as little as 24-48 hours. It's not the right tool for every situation, and terms are never guaranteed — but for a cash-flow-positive business, it can bridge the gap that valuation math alone doesn't cover.

For a deeper look at cash-flow-based approvals, see our pillar guide on revenue-based business financing and how lenders read your bank deposits.

Common valuation mistakes that cost owners money

After enough deals, the same errors show up on both sides of the table. Avoiding these is worth more than any single valuation trick.

• Valuing on revenue instead of profit. "We do $2M in sales" says nothing about value. A $2M-revenue business with a 5% margin is worth a fraction of a $2M-revenue business at 20%. Buyers pay for earnings, not top line.
• Padding add-backs. Every phantom add-back a buyer catches makes them distrust the rest of your numbers — and distrust compresses the multiple far more than the add-back would have added.
• Ignoring owner dependence. If the business can't run without you for two weeks, you're selling a job. Fix this before you sell, not during due diligence.
• Using the wrong method for your size. An owner-operator quoting themselves an EBITDA multiple is setting up for disappointment when buyers re-underwrite on SDE.
• Not normalizing earnings. One-time windfalls and one-time disasters both need to come out so the buyer sees the true, repeatable cash flow.
• Waiting until you're forced to sell. The best valuations come from businesses prepared 12-24 months in advance, with clean books and reduced owner reliance. Distressed timing is the enemy of price.

Value is built long before the sale. Clean financials, transferable operations, and documented, recurring cash flow are what turn a 2.5x business into a 3.5x business — and that's where the real money is made.