To calculate the enterprise value of a private company, start with equity value, add total debt and any preferred equity or minority interests, and subtract unrestricted cash. The formula is simple; the work is in the inputs. Equity value for a private business doesn’t come off a stock ticker, so you have to build it from normalized earnings and a chosen valuation method, then apply the discounts and premiums that private ownership requires. Debt means more than the loan balance on the balance sheet, and only some of the cash counts. What follows is how each piece gets built.
Normalize Earnings Before Anything Else
Every valuation method below runs on earnings, and raw EBITDA from a private company’s income statement almost never reflects what the business actually produces under arm’s-length management. Owners run personal expenses through the company, pay themselves above or below market, and lease real estate from entities they also control. Normalizing means stripping those distortions out.
The common add-backs:
- Above-market owner compensation. If the owner pays themselves $500,000 and a hired CEO would cost $250,000, the $250,000 excess gets added back. This is usually the largest adjustment and the one buyers fight hardest.
- Family payroll for relatives who won’t stay after the sale.
- Personal expenses: vehicles used mainly for personal driving, personal travel coded as business, owner life insurance premiums.
- Above-market rent paid to an owner-affiliated landlord. The add-back is the gap between actual rent and fair market rent.
- Non-recurring costs: one-time legal settlements, unusual bad-debt write-offs, inventory losses that won’t repeat.
Document each adjustment with evidence before you present a number. Overstated add-backs inflate EBITDA, inflate the headline valuation, and collapse under a buyer’s diligence. For small owner-operated businesses, appraisers often switch from EBITDA to seller’s discretionary earnings (SDE), which adds back the full owner’s compensation package because the buyer is purchasing a job alongside the business.
You also need the records to support all this. At least three years of financials, with federal tax returns (Form 1120 for C corps, 1120-S for S corps, 1065 for most partnerships and multi-member LLCs) reconciled to internal profit-and-loss statements and balance sheets.1Internal Revenue Service. Instructions for Form 1120 (2025) Where the books and returns don’t agree, expect diligence questions.
Estimate Equity Value
Appraisers typically use at least two of the methods below and weight the results. No single method is right for every business.
Comparable Company Analysis
Find public companies in the same industry, often matched by NAICS code, and look at what the market pays for their earnings. If a cluster of comparable public firms trades at seven times EBITDA, that becomes your starting multiple. Mid-market private businesses typically land in the five-to-ten-times-EBITDA range, with the spread driven by industry, growth, and margins. A niche software company with 90 percent recurring revenue commands a much higher multiple than a regional trucking firm with thin margins and heavy capital needs.
The raw public multiple then gets discounted to reflect private-company realities, which can cut 20 to 40 percent off the implied value. Picking the wrong comparable set, like matching a slow-growth services business to high-growth tech peers, produces a number that falls apart in negotiation.
Discounted Cash Flow
A DCF projects free cash flow over a forecast period (usually five years), adds a terminal value for everything beyond that horizon, and discounts each year back to present value using a rate that reflects the risk of the investment.
Private companies don’t have a beta, so appraisers use the build-up method for the discount rate. It stacks several risk layers: a risk-free rate (usually the 20-year Treasury yield), an equity risk premium (Kroll pegs this at 5.0 percent as of early 2025), a size premium that increases for smaller firms, and a company-specific premium for factors like customer concentration, management depth, and geographic limitation. The total often reaches 15 to 25 percent for a small private company, which is why DCF models tend to produce more conservative valuations than comparable-company analysis at the small end of the market.
A DCF is only as good as its assumptions. The strongest models tie revenue projections to identifiable drivers, such as contract backlog, pipeline conversion, or historical same-store growth, rather than optimistic hockey-stick curves.
Precedent Transactions
Instead of public-market trading multiples, this method pulls multiples from recent sales of similar private businesses. Databases like Pratt’s Stats and DealStats compile thousands of closed deals with disclosed terms. The approach acts as a reality check: the market doesn’t care what your spreadsheet says if comparable businesses are consistently selling at lower multiples.
SDE for Smaller Businesses
For owner-operated businesses under roughly $5 million in annual revenue, SDE multiples usually run between two and four times. The multiples are smaller than EBITDA multiples, but the underlying earnings figure is larger because full owner compensation is added back, so the resulting valuations aren’t as far apart as the raw multiples suggest.
Apply the Discounts and Premiums
Private company valuations almost always carry at least one adjustment to the equity value a method produces. Two matter most.
Discount for Lack of Marketability
Public shares sell in seconds. A private business takes six to twelve months to sell under a well-run process, and longer with complications. That illiquidity has a cost, captured through a discount for lack of marketability. Empirical studies put reasonable DLOM figures between 15 and 40 percent depending on company size, profitability, expected holding period, and distribution history, with rules of thumb often clustering at 20 to 30 percent.2NYU Stern. Estimating Illiquidity Discounts
One trap to avoid: if your valuation already uses private-company multiples from a precedent transaction database, those multiples already reflect illiquidity. Adding a DLOM on top double-counts the penalty. The discount belongs on valuations built from public-company comparables, not on figures already drawn from private sales.
Control Premium
A buyer acquiring a controlling interest can set strategy, hire and fire management, and decide on distributions. That control is worth something, typically 25 to 30 percent above the value of a minority interest and sometimes more for especially attractive targets. If your equity value was estimated on a minority-interest basis, as most public-company comparables are, you may need to add a control premium when the deal is for 100 percent of the business. If the valuation already assumes a controlling stake, no adjustment is needed.
Identify All the Debt
In the enterprise value formula, debt means every interest-bearing obligation the buyer inherits or must retire at closing: term loans, revolving credit facilities, bonds, promissory notes to founders, and any other financing on the books. Short-term trade payables stay out because they’re treated as working capital.
The trickier category is debt-like items. These are liabilities that aren’t technically loans but function the same way from the buyer’s perspective, and they often hide in the footnotes:
- Unfunded pension obligations, which can be large and are easy to overlook if the workforce is older.
- Finance leases, which under current accounting rules show up on the balance sheet.
- Deferred revenue: cash collected for services not yet delivered, which the buyer inherits an obligation to perform.
- Unpaid legal claims and environmental liabilities, representing expected losses from pending matters.
- Accrued bonuses and deferred compensation owed to employees but not yet paid.
- Seller transaction costs that the purchase agreement shifts to the buyer.
Any cash liability the buyer expects to pay once the seller is gone can be classified as debt-like. Sophisticated buyers search for these items specifically. Finding them after a letter of intent is signed weakens the seller’s position considerably.
Subtract Only the Cash the Buyer Really Gets
Cash gets subtracted because the buyer effectively receives it back at closing, reducing net cost. But not all cash on the balance sheet counts. Restricted cash, tied up by loan covenants, escrow agreements, security deposits, or regulatory reserves, stays in the calculation because the buyer can’t freely use it.
A business also needs some minimum cash on hand to operate between receivable collections. Only the genuinely excess cash, above operating needs, gets subtracted. The line between operating cash and excess cash is negotiable and almost always contested.
Working Capital Adjustments at Closing
Enterprise value assumes the business arrives with a normal level of working capital. Actual working capital on closing day almost never matches that normal level exactly, so the purchase price moves up or down to reconcile the two.
The mechanism is the working capital peg: a benchmark amount of net working capital (current assets minus current liabilities) that buyer and seller agree represents normal operating needs. The peg is usually a trailing twelve-month average of normalized working capital, though shorter periods may be used for seasonal businesses or where operations have recently changed.
If actual working capital on closing day exceeds the peg, the buyer pays the seller the difference dollar for dollar. If it falls short, the seller gives back the difference. For a peg of $20.5 million: closing working capital of $22.5 million means an extra $2 million to the seller; closing working capital of $18.5 million drops the price by $2 million.
This generates more post-closing disputes than almost any other deal term. Which accounts belong in working capital, how they’re normalized, and the measurement window all get negotiated in the purchase agreement. Sellers who ignore the details until after signing often leave real money on the table.
Enterprise Value Isn’t the Final Price
Enterprise value is a starting point for negotiation. Tax structure, in particular, shifts millions between buyer and seller without changing the headline number. Buyers almost always prefer an asset purchase because it steps up the tax basis of what they buy, producing larger depreciation and amortization deductions going forward. Sellers generally prefer a stock sale because it delivers a single layer of capital gains tax on their shares; an asset sale by a C corporation triggers gain at the entity level and tax again when proceeds are distributed.
Section 338(h)(10) of the Internal Revenue Code offers a hybrid for certain corporate acquisitions, letting the buyer purchase stock while both parties elect to treat the deal as an asset sale for tax purposes.3Office of the Law Revision Counsel. 26 US Code 338 – Certain Stock Purchases Treated as Asset Acquisitions It’s commonly used with S corporation targets. Two identical businesses with identical enterprise values can produce very different after-tax proceeds depending on structure, so any serious analysis models both scenarios. Earnouts, indemnification holdbacks, and seller notes also move the economics between the letter of intent and the closing table.
What Professional Valuation Costs
For businesses under $10 million in annual revenue, a formal certified valuation from a credentialed appraiser (ASA, CVA, or ABV designation) typically runs $2,000 to $10,000. Certified reports needed for IRS filings, litigation, or partnership buyouts tend to cluster in the $7,000 to $8,000 range. Complexity, the number of entities involved, and the intended use of the report drive the price.
A quality-of-earnings report, commissioned by a buyer during due diligence to test whether reported EBITDA is sustainable, is a separate and more expensive engagement. Expect $25,000 to $35,000 for businesses under $10 million in revenue and $60,000 or more for larger companies. The QofE identifies one-time windfalls, recurring versus non-recurring revenue, customer concentration risk, and whether add-backs hold up under scrutiny. Sellers who commission their own before going to market head off surprises; most skip it because the cost feels steep before a deal is on the table.
Once every piece is assembled, the arithmetic is straightforward. Add equity value to total debt (including debt-like items), add preferred equity and minority interests, and subtract unrestricted excess cash. The result is the capital a buyer needs to gain full control of the business and retire its obligations. Where it lands after negotiation depends on leverage, timing, and how well each side understands the other’s motivations.