How to Value a Small Business Before You Buy It

Why small business valuation confuses buyers

Most buyers approach valuation backwards. They hear a price, accept the seller's narrative, and look for reasons the number is justified. The correct approach is to start from first principles: what does this business earn, how reliable is that earning power, and what multiple is appropriate given the risk?

Small business valuation is not precise. Two qualified appraisers can legitimately value the same business 20–30% apart, depending on which multiples they apply, how they treat owner add-backs, and how they weight qualitative risk factors. The goal is not a precise number — it is a range that tells you whether the asking price is in the right neighbourhood and where your negotiating leverage lies.

The other thing buyers often miss: the business's price and the business's value are not the same thing. A seller always has a number in their head. Your job is to calculate your own number before you see theirs.

Method 1: SDE multiple (the standard for main street businesses)

Seller's Discretionary Earnings (SDE) is the most common metric for valuing businesses with a single owner-operator and annual revenues below $5M.

SDE calculation: Start with net profit (from the business tax return) Add back: owner's annual W-2 salary or owner's draw Add back: personal expenses run through the business (car, phone, insurance) Add back: depreciation and amortization (non-cash charges) Add back: interest expense Add back: one-time expenses that will not recur (legal settlement, major equipment repair, pandemic-year losses) Subtract: any unusual one-time income that will not repeat

The result is SDE — the total economic benefit a single owner-operator receives from the business.

Multiple: SDE × 2 to 4 is the standard range for most main street businesses. A $200K SDE business might sell for $400K–$800K depending on the risk factors discussed below. The multiplier reflects how confident a buyer can be that SDE will continue after the transaction.

Important: sellers often present adjusted SDE with aggressive add-backs. A car the owner uses 80% personally but expenses 100% through the business should be partially added back, not fully. Challenge every add-back — the burden of proof is on the seller.

Method 2: EBITDA multiple (for larger or managed businesses)

EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) is the metric used when the business has professional management — meaning an owner who does not work in the business daily, or a business large enough to support a management team.

The key difference from SDE: EBITDA does not add back the owner's compensation because a future owner would need to hire a replacement manager. SDE is appropriate when you (the buyer) will also be the operator. EBITDA is appropriate when you are buying a business as an investment and hiring management to run it.

For businesses with $1M–$5M EBITDA, typical multiples run 3–6x depending on industry, growth rate, customer base quality, and competitive position. A cleaning services company with $1.5M EBITDA and long-term B2B contracts might trade at 4.5x ($6.75M). The same EBITDA in a single-location restaurant might trade at 2.5x ($3.75M) because of financing difficulty and category risk.

Above $5M EBITDA, you are in middle-market M&A where professional buyers (private equity, search funds, strategic acquirers) apply different frameworks — outside the scope of most individual buyers.

Method 3: Asset-based valuation (for asset-heavy businesses)

Asset-based valuation applies when the business owns significant hard assets — real estate, manufacturing equipment, fleet vehicles, inventory — and those assets have a market value independent of the business's earnings.

Laundromats, auto repair shops, manufacturing operations, and real-estate-owning businesses are often valued partially or primarily on assets. The method: sum the fair market value of all hard assets (what would they sell for if you liquidated them today?), then add a multiplier for goodwill and customer relationships if the business is a going concern.

A laundromat with 40 machines worth $8,000 each (replacement cost) = $320K in equipment. Add real estate appraised at $800K. Total hard assets: $1.12M. If the business is also producing $175K in SDE, you might add 1–1.5x SDE for goodwill: $175K–$262K. Total value range: $1.3M–$1.38M.

Buyers sometimes confuse replacement cost with fair market value. A machine that cost $10,000 new and is 12 years old has a fair market value closer to $2,000–$3,000, not $10,000. Use actual market comparables, not original purchase price.

The five risk factors that compress the multiple

The multiple you apply to SDE or EBITDA is a risk discount. Higher risk = lower multiple. These five factors compress multiples most reliably:

**1. Owner dependence.** If the owner is the primary salesperson, technical expert, or customer relationship holder, a portion of SDE leaves when the owner does. A business where the owner works 60 hours/week and holds the key relationships should trade at 1.5–2x SDE. A business where the owner works 10 hours/week reviewing reports should trade at 3.5–4x.

**2. Customer concentration.** One customer representing more than 20–25% of revenue is a concentration risk. If that customer leaves post-acquisition, SDE drops sharply. Discount the multiple by 0.5–1x for each customer above 20% concentration.

**3. Revenue trend.** Declining revenue over the past 2–3 years compresses multiples significantly. Even if SDE is strong in the trailing twelve months, a downward trend signals that future SDE may be lower. Buyers apply a discount; so do SBA lenders.

**4. Short lease term.** For any location-dependent business, a lease with under 5 years remaining (with no renewal option) reduces value materially. Lenders may refuse to finance it; buyers should price in the risk of losing the location.

**5. Non-transferable licenses or relationships.** A business that depends on a personal license (contractor's license, professional certification held by the owner), a non-assignable supplier contract, or a government contract that cannot transfer creates a discontinuity at closing. Price accordingly or require resolution before closing.

How location quality affects business value for franchises

For franchise resales specifically, location quality is a valuation factor that most buyers treat as a narrative and most sellers ignore in their asking price.

Two resale Tim Hortons franchises with identical SDE may be worth materially different amounts if one sits on a prime transit corridor and the other is in a secondary retail park with declining foot traffic. The location with better fundamentals has higher expected SDE continuity and lower risk — both of which support a higher multiple.

The practical step: run the franchise address through a location scorer before you accept the seller's SDE number as definitive. A location scoring 8/10 on transit, foot traffic, and demographic fit suggests SDE is likely to hold or grow. A location scoring 4/10 suggests the SDE may decline once the current operator's tenure-based customer relationships gradually erode.

This matters most in competitive franchise categories — QSR, coffee, convenience — where a 1-mile radius can mean the difference between a dominant location and a marginal one.

Red flags in a seller's valuation — and how to respond

Sellers and their brokers present valuations that support the asking price. These are the most common manipulations and how to counter each:

**Inflated add-backs.** The seller adds back a $60,000 salary as if you will work the business for free. If you will work full-time, your own replacement salary cost is real. Counter: use a market-rate replacement manager salary as an expense before calculating SDE.

**Trailing-twelve-month cherry-picking.** The seller uses the best 12-month period rather than a 3-year average. Compare TTM SDE to the 3-year average. If TTM is materially higher, ask what drove the increase and whether it is sustainable.

**Including personal loans in add-backs.** Personal debt service on money borrowed and run through the business is sometimes presented as a business add-back. It is not. Only business-purpose expenses qualify.

**Goodwill valued at multiples above market.** A seller might claim their customer relationships are worth 5x SDE when their category typically trades at 2.5x. Ask for comparable transactions in the same category. Your business broker or a CPA who does quality of earnings work can pull actual sale comparables.

Your best protection: a quality of earnings (QoE) report from an independent CPA, commissioned by you before closing. Cost: $3,000–$8,000 depending on business size. For any acquisition above $300K, it is not optional.

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