What Is a Business Valuation and How Do Buyers Calculate It?

What Is a Business Valuation and How Do Buyers Calculate It?

A business valuation is a supportable estimate of what a business is worth, as of a specific date, to a specific type of buyer, under stated assumptions. It is not a single fact about your company. Change the purpose, the buyer, or the date and the number legitimately changes.

That is the part owners find hardest to accept. You can have a bank valuation, a divorce valuation, a gift tax valuation, and a purchase offer for the same business in the same year, all four defensible, all four different.

Here is how the number actually gets built.

The Three Approaches an Appraiser Uses

Every credible valuation runs through the same three lenses, then weights them based on the facts.

The income approach values the business on the earnings it can be expected to produce, either by capitalizing a single year of normalized earnings or by discounting projected cash flows back to present value. This governs when the business has stable, predictable profit and an operating history to support a projection.

The market approach values it against what comparable businesses actually sold for, expressed as a multiple of earnings or revenue. This governs when there is real transaction data for similar companies in similar size ranges, which is why it dominates in small and mid-market deals.

The asset approach values the assets net of liabilities. It governs for asset-heavy, marginally profitable, or holding companies, and it functions as a floor. A profitable operating business worth less than its net assets is telling you something about the operations.

For most owner-operated businesses, the market approach drives the answer and the other two serve as sanity checks.

Where the Number Really Comes From in Small Deals

Strip away the formality and most small-business pricing is one equation: normalized earnings times a multiple.

Normalization is where the work is. A buyer rebuilds your earnings to reflect what the business would produce under a normal owner, which means adding back personal expenses run through the company, removing one-time items in both directions, adjusting owner compensation to market rate, restating related-party rent to market, and correcting accounting that does not hold up such as revenue recognized too early or inventory that was never counted.

Owners consistently underestimate this step. Two businesses reporting identical net income can normalize to numbers 30 percent apart, and the adjustments are negotiated line by line during diligence. This is also why messy books cost real money at sale: every adjustment you cannot document is an adjustment the buyer does not have to grant.

SDE Versus EBITDA, and Why It Matters Which One Applies

Small deals and mid-market deals speak different languages, and the language depends on whether the owner is doing a job.

	Seller's discretionary earnings (SDE)	EBITDA
What it measures	Total financial benefit to one full-time owner-operator	Earnings before interest, taxes, depreciation, and amortization
Owner compensation	Added back entirely	Replaced with market-rate salary for the role
Typical business	Owner-operated, generally under a few million in revenue	Manager-run, with a team that survives the owner leaving
Typical buyer	Individual buyer or searcher stepping into the job	Private equity, family office, or strategic acquirer
Why it matters	Buyer is buying an income and a job	Buyer is buying an asset that runs without them

Using the wrong metric produces the wrong answer by a wide margin, because SDE is a larger number than EBITDA for the same company. An owner who reads that businesses sell for a certain multiple, applies it to SDE when the market applies it to EBITDA, and starts planning around the result has built an expectation gap that will surface at the worst possible moment.

What Expands or Compresses the Multiple

The multiple is not a rule of thumb. It is an output of what comparable buyers paid for comparable risk, and it moves on specific, identifiable features.

Multiples generally expand with recurring or contracted revenue, a diversified customer base, documented processes that let the business run without the owner, a management team staying through transition, clean and auditable financials, and growth a buyer believes will continue.

Multiples generally compress with customer concentration, meaning one client is a large share of revenue, heavy owner dependence where relationships and knowledge live in one head, declining or volatile earnings, deferred maintenance in equipment or technology, key-person risk, regulatory exposure, and books that require reconstruction before anyone can trust them.

The useful reframe: most of these are fixable, and most take one to three years to fix. That is the actual argument for starting valuation work well before you intend to sell. It is worth being direct that improving these factors changes your position rather than guaranteeing an outcome, because the multiple also depends on credit conditions and buyer appetite you do not control.

Enterprise Value Is Not What You Take Home

An offer headline describes enterprise value. Your bank account cares about net proceeds, and the distance between them is large.

Between the two sit a working capital peg, meaning the buyer requires a normal level of receivables and inventory to be delivered with the business and adjusts the price if you deliver less. Then existing debt gets paid off at closing. Then a portion is often held in escrow for a period against representations and warranties. Then some of it may be an earnout contingent on future performance, or a seller note you are financing yourself. Then transaction fees. Then taxes, which depend heavily on entity type, asset versus stock structure, and the allocation of purchase price across asset classes.

It is common for the cash at closing to be well below the headline number. Knowing that early changes which offer you prefer, because a lower price with more cash at closing can beat a higher price weighted toward an earnout.

Why the Same Company Has Several Correct Valuations

The formal reason is the standard of value, which is stated in every credible valuation report.

Fair market value assumes a hypothetical willing buyer and seller, neither compelled to act. That is the standard for gift and estate tax purposes, and it typically applies discounts for lack of control and lack of marketability on minority interests. Investment value is the value to a specific buyer, including synergies that only that buyer would realize, which is why a strategic acquirer can rationally pay more than anyone else. Fair value is a defined accounting or statutory concept that varies by jurisdiction and context.

Add the as-of date, since a valuation is a snapshot and a good year changes it, and you have four legitimate numbers for one company. Anyone who tells you your business "is worth" a single figure without naming the purpose and the standard is skipping the part that makes the number defensible.

Where to Start

If a sale is anywhere on your five-year horizon, the sequence that works is: get the books to a standard a buyer can test, understand your normalized earnings honestly including the adjustments a buyer will contest, identify which of the multiple-compressing factors apply to you, and fix the ones you can.

That is accounting and finance work before it is deal work. You can compare firms that handle normalization, clean-up, and pre-sale preparation in the Sam's List accountant directory or find fractional CFO support in the fractional CFO directory. Confirm credentials and fit before engaging anyone, and for a formal appraisal, ask specifically about credentials such as ABV, ASA, or CVA.

Frequently Asked Questions

How are small businesses valued? Most commonly by the market approach: normalized earnings multiplied by a multiple derived from comparable completed transactions. Owner-operated businesses are typically priced on seller's discretionary earnings, while manager-run businesses are priced on EBITDA. Income and asset approaches serve as cross-checks, and the asset value generally acts as a floor.

What is the difference between SDE and EBITDA? SDE measures the total financial benefit available to a single full-time owner-operator and adds back the owner's entire compensation. EBITDA replaces the owner's pay with a market-rate salary for the role, because the buyer expects to hire someone to do that job. SDE is therefore the larger number for the same business.

How long before a sale should I get a valuation? Ideally two to three years. That is roughly how long it takes to address the factors that compress a multiple, such as customer concentration, owner dependence, and financials a buyer cannot verify. A valuation obtained weeks before going to market can identify problems but leaves no time to fix them.

Why do I get different valuation numbers from different people? Because the purpose, the standard of value, the buyer type, and the as-of date all legitimately change the answer. A bank valuation, a gift tax appraisal, and a strategic buyer's offer are answering different questions. Ask any provider to state which standard of value they applied and why.

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About the author: Kimberly Green is the cofounder of Sam's List, where business owners and high earners find vetted CPAs, financial advisors, and fractional CFOs. She's met one-on-one with 400+ financial professionals and writes from the real data behind thousands of client-advisor matches. Ask her anything about finding an accountant - she's heard it all, including the questions people are afraid to ask.