Business Valuation Methods: How to Calculate What a Business Is Worth

The three approaches, and when each one actually applies

The earnings approach — sometimes called the income approach — values a business as a multiple of what it earns. You take a normalized profit figure and multiply it by a number that reflects how much risk and growth a buyer sees in that income stream. This is the dominant approach for profitable, operating small and mid-sized businesses, because most buyers are purchasing future cash flow, not a pile of equipment. If you want the mechanics of the multiplication itself, our companion guide on the valuation formula walks through that calculation in detail; this guide focuses on how to arrive at the right inputs.

The market approach values a business by reference to what comparable businesses have actually sold for, expressed as a multiple of revenue or earnings. It is less a standalone calculation than a reality check: if your earnings-based number implies a multiple wildly outside what similar businesses in your industry and size range have traded at, something in your assumptions is probably off, either in the earnings figure or the multiple you chose. Good comparable data for private companies is hard to get precisely, which is why this approach is best used to bound a number rather than to produce one.

The asset approach adds up the fair market value of what a business owns — equipment, inventory, receivables, sometimes intangible assets — and subtracts liabilities. It is the right lens for asset-heavy businesses with thin or unstable profits, businesses being liquidated rather than sold as going concerns, or as a floor check: a profitable business should virtually never be valued below what its net assets are worth, since a buyer could otherwise just buy the assets outright.

For most owners reading this, the earnings approach will produce the number that matters, the market approach will tell you whether that number is plausible, and the asset approach will mostly serve as a backstop. A business that is losing money or barely breaking even may need to lean on the asset approach instead, since there is no earnings stream worth multiplying.

Step 1: Clean up the financials before you calculate anything

Every valuation approach depends on the same starting point: financials that reflect how the business actually performs, not how it was structured for tax purposes. Small businesses routinely run personal expenses through the company, pay the owner a salary unrelated to market rate, and have one-off items — a lawsuit settlement, a bad debt write-off, a single large equipment purchase — sitting inside an otherwise normal year. None of that reflects ongoing operating performance, and a buyer will strip it out whether you do or not.

This cleanup process, usually called normalizing or recasting the financials, means going through at least two to three years of profit and loss statements line by line and identifying add-backs: owner compensation above or below fair market rate, personal vehicle or travel expenses, one-time legal or repair costs, and non-cash items like excess depreciation. The goal is a number that represents what a new owner, paying themselves a market wage, would actually earn from running the business in a normal year.

Skipping this step doesn't avoid the work, it just moves it to the buyer's side of the table, usually during diligence, and usually with the buyer's own assumptions rather than yours. Owners who show up with clean, well-documented add-backs and the receipts to back them up tend to get less pushback on the resulting number than owners who hand over raw tax returns and hope the buyer figures it out generously.

Recasting isn't creative accounting — every add-back should be genuinely non-recurring or genuinely personal, and it should be explainable in one sentence to a skeptical buyer. Add-backs that require a long story to justify are the ones most likely to get cut during negotiation.

Step 2: Calculate the right earnings measure for your size

Once the financials are cleaned up, the next step is calculating a normalized profit figure — but which one depends on the size of the business. Very small businesses, generally those where the owner works full time in the business, use seller's discretionary earnings (SDE): net profit plus the owner's salary and benefits, plus interest, taxes, depreciation and amortization, plus other add-backs. SDE assumes a single owner-operator running the place personally, which is realistic for most businesses under a few million dollars in revenue.

Larger businesses, generally those with a management team that could run operations without the current owner, use EBITDA (earnings before interest, taxes, depreciation and amortization) instead. EBITDA does not add back a market-rate owner's salary the way SDE does, because the assumption shifts: a professional buyer expects to pay a manager to run the business, not to do the job personally. Using SDE on a business too large for it, or EBITDA on a business too small for it, produces a number that doesn't match how buyers in that segment actually think, which throws off everything downstream.

There's no single revenue line where one measure switches to the other — it depends more on whether the business genuinely needs an owner-operator or could run under hired management — but as a rough guide, businesses under roughly $1 million to $2 million of profit are usually valued on SDE, and businesses above that range increasingly shift toward EBITDA. If you're not sure which applies to your business, or want the full detail on how the two measures differ and convert between each other, that's the focus of our companion guide on SDE versus EBITDA.

Whichever measure you use, consistency matters more than precision to the third decimal. Buyers will recalculate your earnings figure from source financials regardless of what you present, so the value of doing this step carefully yourself is less about the exact number and more about being able to defend every add-back when asked.

Step 3: Choose a defensible multiple

The multiple is where a business's specific risk profile gets priced in, and it is the single input owners most often get wrong by assuming their business deserves the multiple they've heard mentioned for their industry in general. Industry multiples are starting ranges, not entitlements — the same industry can see multiples that vary by a full point or more depending on size, growth, customer concentration, and how dependent the business is on the owner personally.

A few factors reliably push a multiple toward the top of an industry's typical range: recurring or contracted revenue, a diversified customer base with no single client dominating sales, a management team that could run the business without the owner, consistent or growing profit over the last several years, and clean, easily verifiable financial records. Factors that push toward the bottom include heavy owner dependence, customer concentration, declining or lumpy revenue, and financials that are hard to verify or full of judgment-call add-backs.

Larger businesses also tend to earn higher multiples than smaller ones in the same industry, a pattern sometimes called the size premium: more profit dollars generally means more stability, more institutional infrastructure, and a wider pool of capable buyers, all of which reduce perceived risk. This is one reason two businesses in the same industry, at different revenue levels, can reasonably sell at noticeably different multiples even with similar margins.

Because multiples move on qualitative factors as much as financial ones, it helps to write down, plainly, the three or four things about your specific business that would make a buyer comfortable paying toward the higher end of its range — and be honest about the ones pulling the other way. That exercise usually produces a more realistic number than searching for a single quoted industry average.

Step 4: Adjust the earnings-times-multiple result for risk factors specific to the business

The math of multiplying earnings by a multiple gives you a starting figure, but real deals rarely land exactly on that number without some adjustment for factors that don't show up cleanly in either input. A key employee who could leave and take clients with them, a lease expiring soon with an uncertain renewal, pending litigation, or a major piece of equipment near the end of its useful life are all things a buyer will discount for even if they don't change your earnings or your industry's typical multiple.

Some of these adjustments get built into the multiple itself during negotiation, and some get handled separately as price reductions, escrow holdbacks, or earnouts tied to specific milestones. Either way, it's worth identifying these risk factors yourself before a buyer does, both because you may be able to fix some of them before going to market (renewing a lease, cross-training a key employee) and because addressing them proactively reads very differently to a buyer than having them surface during diligence.

Growth trajectory deserves separate mention: a business with two years of declining revenue and one recent strong year gets valued very differently than one with steady growth throughout, even if the most recent year's earnings are identical. Buyers weight trend, not just the latest number, so a valuation based only on trailing-twelve-month earnings without context on the trend is incomplete.

Enterprise value versus what the seller actually receives

The number produced by earnings times multiple is enterprise value: the value of the operating business itself, independent of how it's financed or how much cash happens to be sitting in its bank account. Enterprise value is what gets negotiated and what gets quoted when people talk about a business being 'worth' a certain amount. It is not, by itself, the check the seller receives at closing.

To get from enterprise value to what a seller actually walks away with, you typically subtract interest-bearing debt the business owes (since the buyer isn't taking that on for free) and add back excess cash sitting in the business above what's needed to run it day to day. A business with $1.2 million of enterprise value, $200,000 of business debt, and $50,000 of cash beyond normal operating needs nets the seller roughly $1.05 million before transaction costs and taxes — the debt gets paid off at closing and the cash generally comes out to the seller.

This distinction trips up a lot of first-time sellers, who see a valuation number and assume it's their payout. It's also why two businesses with identical enterprise values can leave their owners with very different amounts at closing, depending entirely on how much debt is on the balance sheet and how much cash has been left to accumulate versus distributed along the way.

Working capital and debt-free, cash-free deal structures

Most small business sales are structured as 'debt-free, cash-free,' meaning the enterprise value price assumes the business is transferred without its existing debt and without its existing cash — both are settled with or extracted by the seller at closing, as described above. Layered on top of that is a working capital target: the buyer needs enough receivables, inventory, and other operating funds left in the business to keep it running normally on day one without injecting extra capital immediately.

That target is usually set as a normal, historical average level of working capital for the business — commonly measured over a recent trailing period — and it gets negotiated into the purchase agreement as a peg. If the business is delivered at closing with more working capital than the peg, the seller typically gets paid the difference; if it's delivered with less, the buyer typically deducts the shortfall from the purchase price.

This mechanism catches sellers off guard when they don't plan for it, particularly if they let inventory run down or stop restocking in the months before closing to convert it to cash, since that can trigger a working capital shortfall adjustment that reduces proceeds. Understanding the working capital peg early, ideally before you start negotiating price, avoids surprises in the final weeks of a deal.

None of this changes enterprise value itself — it's a separate, mechanical adjustment layered on afterward — but it directly affects the size of the check at closing, which is ultimately what matters to a seller.

How buyers sanity check a valuation number

A buyer rarely accepts a seller's valuation at face value, and understanding how they stress-test it helps explain why negotiations move the way they do. The most common check is recalculating earnings from source documents — tax returns, bank statements, general ledger detail — rather than relying on a seller-prepared summary, which is why clean, verifiable records matter as much as the underlying number.

Buyers also compare the implied multiple against what they know from other deals they've looked at or closed in similar industries, and against financing constraints: a lender financing part of the deal will often order its own valuation or require the price to support a debt service coverage ratio the business's cash flow can actually sustain. A price that looks fine to a seller can fail a lender's coverage test if the earnings don't comfortably support the debt payments, which forces a renegotiation regardless of what either side originally agreed.

Finally, buyers weigh the qualitative risk factors discussed earlier — owner dependence, customer concentration, contract terms, growth trend — against the multiple being asked, and will push back hard if the multiple doesn't seem to reflect those risks. This is why the most defensible valuations are the ones where the seller can articulate, factor by factor, why the multiple sits where it does rather than pointing to a general industry rule of thumb.