How to Do a Business Valuation: Methods, Multiples & Steps

I’m Jonathan. “What’s my business worth?” is the question I hear most, and the honest answer is: it depends on the method, the purpose, and who’s asking. A business has no single true value — it has a value to a specific buyer, for a specific purpose, at a specific time. Understanding that is the foundation of everything below.

This guide covers the valuation methods that actually get used — from back-of-the-napkin multiples to formal DCF models — when each applies, and a practical step-by-step process for valuing a small or mid-sized business.

In This Guide

• Why Valuation Purpose Changes the Answer
• Method 1: Earnings Multiples (Most Common)
• Method 2: Discounted Cash Flow (DCF)
• Method 3: Asset-Based Valuation
• Method 4: Comparable Sales
• What Drives Value Up or Down
• Step-by-Step: Valuing a Small Business
• Common Valuation Mistakes
• Frequently Asked Questions

Why Valuation Purpose Changes the Answer

Before methods, understand this: the reason for the valuation shapes the result.

• Selling the business: value = what a buyer will pay. Market-driven, forward-looking.
• Buying a business: value = what it’s worth to you, including synergies only you can capture.
• Tax or legal purposes: value = defensible fair market value under specific standards.
• Fundraising: value = negotiated, driven by growth story and investor competition as much as math.
• Divorce or partnership disputes: value = what a court will accept, often conservative.

Same business, five different numbers — all “correct” in context. When someone quotes you a valuation, always ask: for what purpose, using what method, as of when? Without those, the number is meaningless.

Method 1: Earnings Multiples (Most Common)

The workhorse of small-business valuation: Value = Earnings × Multiple.

Which earnings? For small businesses, SDE (Seller’s Discretionary Earnings) — net profit plus the owner’s salary, benefits, and personal expenses run through the business, plus one-time or non-recurring items. It answers: “what does this business truly throw off for an owner-operator?” For larger businesses, EBITDA (earnings before interest, taxes, depreciation, amortization) is standard.

What multiple? This is where judgment lives:

• 2–3x SDE: small businesses with owner dependence, customer concentration, or declining trends
• 3–4x SDE: healthy small businesses with growth, diversified customers, some systems
• 4–6x EBITDA: established mid-sized businesses with management teams
• 6–10x+ EBITDA: high-growth, scalable, or strategically valuable companies

Example: a service business with $400,000 SDE, stable growth, diversified customers → 3.5x multiple → ~$1.4M value.

Multiples come from comparable sales data (BizBuySell, industry reports) and buyer expectations. They’re blunt instruments — but in small-business deals, they’re what actually gets used, because buyers and sellers both understand them.

Method 2: Discounted Cash Flow (DCF)

The theoretically purest method: value = the present value of all future cash flows, discounted back at a rate reflecting risk.

How it works:
1. Project free cash flow for 5–10 years
2. Estimate a terminal value (what the business is worth beyond the projection period)
3. Discount everything to today using a discount rate (WACC for larger companies; 20–30%+ for small private businesses reflecting their risk)

When to use it: larger businesses, high-growth companies where multiples undervalue the future, or when you need to justify value to sophisticated buyers or courts.

The honest limitation: DCF is extremely sensitive to assumptions. Change the growth rate by 2% or the discount rate by 3%, and the “value” swings 30–50%. It’s precision built on guesses. I use DCF as a sanity check on multiples-based values, not as a standalone answer — except in formal contexts that require it.

Method 3: Asset-Based Valuation

Value = what the assets would fetch if sold, minus liabilities. Two flavors:

• Book value: assets minus liabilities per the balance sheet. Simple, often understates value (ignores intangibles, uses depreciated values).
• Liquidation value: what you’d get in a fire sale. The floor — relevant for distressed situations.

When it matters: asset-heavy businesses (manufacturing, transportation, construction) where equipment and property dominate. Also useful as a sanity floor: if earnings-based value comes out below asset value, something’s off in your assumptions.

When it’s misleading: service businesses, where the value is in relationships, reputation, and recurring revenue — none of which appear on the balance sheet. An asset valuation of a consulting firm is nearly meaningless.

Method 4: Comparable Sales

Value = what similar businesses actually sold for. The most grounded method when data exists.

Sources: BizBuySell and BizQuest listings (asking prices — discount mentally), sold-transaction databases (PeerComps, BVR), industry broker networks, SBA loan data.

The challenge: no two businesses are identical. Adjust for size, growth rate, margins, geography, and deal structure (seller financing vs. cash changes effective price). Use comps as a range-check on your multiples-based valuation, not as gospel.

In practice, most small-business valuations blend methods: earnings multiples as the anchor, comparable sales as validation, asset value as the floor, DCF when the situation warrants formality.

What Drives Value Up or Down

Two businesses with identical earnings can sell for wildly different multiples based on risk factors:

Value drivers (higher multiple):
– Recurring or contracted revenue
– Diversified customer base (no customer over 15–20%)
– Growth trend over 3+ years
– Business runs without the owner (systems, management team)
– Strong brand or market position
– Clean financials, documented processes
– Transferable competitive advantages

Value killers (lower multiple):
– Owner dependence (“it’s a job, not a business”)
– Customer concentration
– Declining revenue
– Key employee risk
– Regulatory or legal overhang
– Messy books
– Industry in structural decline

This list is also a to-do list: every factor you improve before a sale directly increases your multiple. A business at 2.5x SDE and the same business at 4x SDE differ only in these risk factors — that’s a 60% value swing from preparation alone. One caveat: early-stage startups break these methods entirely — with no earnings history, valuation shifts to revenue multiples, user metrics, or simply what investors will pay.

Step-by-Step: Valuing a Small Business

Here’s the practical process:

1. Gather 3 years of financials: tax returns, P&L statements, balance sheets. Reconcile inconsistencies — buyers will find them.
2. Calculate SDE: start with net profit, add back owner’s salary and benefits, personal expenses, one-time costs, non-cash charges (depreciation/amortization), and interest. Document every adjustment — you’ll defend these.
3. Assess the risk factors from the list above honestly. Score growth, concentration, owner dependence, and recurring revenue.
4. Select a multiple based on comparable sales and risk assessment. When uncertain, use a range (e.g., 3–3.5x) rather than false precision.
5. Cross-check with assets: ensure earnings-based value exceeds liquidation value sensibly.
6. Sanity-check with comps: find 3–5 similar sold businesses; confirm your multiple is in range.
7. Present as a range, not a point. “$1.3M–$1.6M” is honest; “$1,472,000” is theater.

If the valuation is for an actual sale, get a professional opinion to validate yours — the few thousand dollars is cheap insurance against mispricing by six figures.

Common Valuation Mistakes

• Valuing on revenue instead of earnings. Revenue without profit is vanity. A $5M-revenue business losing money can be worth less than a $1M-revenue business earning $400K.
• Ignoring the owner’s replacement cost. If the owner works 60 hours for free, SDE overstates what a buyer (who must hire a manager) will earn. Adjust.
• Using asking prices as comps. Asking isn’t selling. Stale overpriced listings prove nothing.
• Forgetting deal structure. $1.5M all cash beats $1.8M with $900K in earnouts. Structure is part of value.
• Emotional pricing. Your sacrifice, your years, your identity — buyers pay for future cash flow, not your past. Every owner overvalues initially; the good ones let data correct them.
• One method only. Triangulate. When three methods converge, you can trust the answer.

If you’re valuing in the context of an exit, the broader process matters as much as the number — timing, preparation, and deal structure all affect what you actually receive. And if you’re on the entrepreneurial path generally, my guide on how to become an entrepreneur covers the journey that makes valuations relevant in the first place.

Business valuation is part math, part judgment: normalize the earnings, pick a multiple the market supports, cross-check with assets and comps, and present a range. The number is the easy part — the real work is understanding the risk factors behind the multiple, because those are the levers that actually move value. Master them, and you’ll never again wonder what a business is worth.

Frequently Asked Questions