To calculate the value of shares in a company, you work out the total value of the business using one or more valuation methods, then divide that total by the fully diluted number of shares outstanding. The arithmetic at the end is easy. The work sits in choosing the right valuation method for the company you’re looking at, using accurate financial inputs, and adjusting for things like preferred stock preferences or the fact that private shares can’t be sold on an exchange.
Pull the Documents You Need First
Every share valuation starts with paperwork. For a publicly traded company, the annual report (Form 10-K) and quarterly report (Form 10-Q) contain audited financial statements prepared under Regulation S-X requirements.1U.S. Securities and Exchange Commission. Form 10-K Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Those filings include the balance sheet, income statement, and notes disclosing contingent liabilities and pending litigation. Private companies keep the same records internally through accounting software or a corporate secretary, but they’re not filed publicly.
You also need the capitalization table. It lists every class of stock, the number of shares issued, and any instruments that could convert into shares later. Options granted to employees, outstanding warrants, and convertible debt all dilute ownership if exercised, so the fully diluted share count is almost always higher than the basic count. Use the wrong number here and your per-share figure will be inflated.
One document people overlook is the buy-sell agreement. If shareholders or partners signed one, it may contain a formula or fixed price that overrides any independent valuation. Some agreements peg the buyout price to book value during the company’s first year, then shift to appraised fair market value later. Others set a discounted price when an owner leaves voluntarily versus an involuntary departure like death or disability. Check for this agreement before spending money on a full valuation, because it may already dictate the answer.
Asset-Based Valuation
The asset-based approach treats the company as the sum of everything it owns minus everything it owes. Start with total assets from the balance sheet, subtract total liabilities, and the remainder is the equity value available to shareholders. This method works best for holding companies, asset-heavy businesses like real estate firms or manufacturers, and companies winding down operations. It tends to undervalue profitable operating businesses because it ignores future earning power.
The balance sheet reports assets at historical cost minus depreciation, which accountants call book value. A building purchased for $2 million a decade ago might show a book value of $1.2 million after depreciation, even though it would sell for $3.5 million today. Equipment often works the other way: a specialized machine may be nearly worthless on the open market despite carrying significant book value. For a valuation that reflects reality, each major asset needs adjustment to its current fair market value. That means appraisals on real estate, marking inventory to what it would actually sell for, and writing down obsolete equipment.
Intangibles complicate the picture. Patents, trademarks, customer lists, and brand goodwill all have value, but internally generated goodwill never appears on the balance sheet at all.2FASB. Goodwill Impairment Testing The asset approach can miss a large chunk of value for companies with strong brands or loyal customer bases.
Earnings-Based Valuation
Where the asset approach asks what the company owns, the earnings approach asks how much money it makes. This is the go-to method for profitable operating businesses where future cash flow drives what a buyer would pay. The basic calculation multiplies annual net income by a price-to-earnings ratio drawn from the industry.
If a company earns $500,000 in annual net income and the industry multiplier is eight, the total business value comes out to $4 million. Multipliers typically range from about three to fifteen. A stable local services business with modest growth prospects might warrant a multiplier of four or five, while a fast-growing software company could justify twelve or higher because buyers are pricing in years of expected profit increases. Higher risk means a lower multiple, because buyers demand a discount for uncertainty.
Market-Based Valuation
A market-based approach values the company by looking at what buyers are paying for similar businesses. You identify comparable companies in the same industry, pull their valuation multiples, and apply those multiples to your company’s financial data. The most common metric is enterprise value divided by EBITDA (earnings before interest, taxes, depreciation, and amortization), though price-to-earnings and price-to-revenue ratios work too depending on the industry.
If comparable publicly traded companies trade at ten times EBITDA and your company generated $800,000 in EBITDA last year, the market-based value would be $8 million. The challenge is finding truly comparable companies. A 50-person regional distributor is not comparable to a publicly traded logistics conglomerate just because they share an industry code. Adjustments for size, geographic reach, customer concentration, and growth trajectory all matter. This method reflects real market sentiment, which makes it persuasive to buyers and investors, but it can also import market irrationality during bubbles or downturns.
Discounted Cash Flow Valuation
The discounted cash flow (DCF) method projects a company’s future cash flows over a set period, usually five to ten years, and then discounts those projections back to their present value. A dollar earned five years from now is worth less than a dollar in hand today, because today’s dollar could be invested and earn a return in the meantime. The discount rate captures both the time value of money and the risk that projected cash flows might not materialize.
In practice, you forecast free cash flow for each year of the projection period, choose a discount rate (often the company’s weighted average cost of capital), and calculate what each year’s projected cash flow is worth in today’s dollars. You also need a terminal value to capture the company’s worth beyond the projection period, since most businesses don’t stop generating cash after year ten. Add up the discounted annual cash flows and the discounted terminal value, and you have the company’s total estimated worth.
DCF is the most theoretically rigorous approach, but it’s the most sensitive to assumptions. Change the growth rate by two percentage points or nudge the discount rate up by one point and the final number can swing dramatically. That sensitivity is why experienced appraisers use DCF alongside one or two other methods rather than relying on it alone.
Blending Methods When One Isn’t Enough
Professional appraisers rarely rely on a single approach. They typically run two or three methods, compare the results, and assign weights based on which method best fits the company. An asset-heavy manufacturer with steady but unspectacular earnings might get 40% weight on the asset approach, 40% on earnings, and 20% on market comparables. A high-growth tech startup with minimal hard assets might get 60% on DCF and 40% on market comparables, with the asset approach ignored entirely because it would produce a misleadingly low number.
The weighted results combine into a single concluded value. If the asset approach says $6 million, the earnings approach says $8 million, and the market approach says $7.5 million, with equal weight on all three, the blended conclusion is about $7.2 million. Each method captures a different aspect of value, and the weighting reflects which aspects matter most for the specific company being valued.
Divide Total Value by Fully Diluted Shares
Once you have a total business value, the per-share price is simple: divide total value by the fully diluted share count. A company valued at $10 million with one million fully diluted shares outstanding produces a per-share value of $10. Use the fully diluted number, not the basic count. If the company has 800,000 shares issued and another 200,000 in outstanding options and warrants, the denominator is one million.
For public companies, this calculated value may diverge from the current stock price because market prices incorporate speculation, momentum, and short-term sentiment that a fundamental valuation intentionally ignores. For private companies, this per-share figure becomes the starting point for legal agreements, buyouts, and tax reporting.
Preferred Stock Changes the Common Share Math
If the company has issued preferred stock with liquidation preferences, you cannot divide the total value equally among all shares. Preferred shareholders get paid first in any exit or liquidation event, and whatever remains flows to common shareholders. A company worth $10 million with $4 million in preferred stock liquidation preferences leaves only $6 million for common shareholders. If there are one million common shares, the per-common-share value is $6, not $10.
This distinction matters enormously for founders and employees holding common stock or options. Ignoring the liquidation preference stack will overstate the value of common shares, sometimes by a wide margin in companies that have raised multiple rounds of venture funding.
Discounts for Private Company Shares
A share in a private company is worth less than an identical economic interest in a public company, because you cannot sell it on an open exchange next Tuesday. Two standard discounts account for this.
- Discount for Lack of Marketability (DLOM) reflects the reduced value of shares that cannot be freely traded. Private company shares often carry transfer restrictions, require board approval for sales, and have no ready pool of buyers. DLOM typically ranges from 30% to 50%, depending on the company’s size, the likelihood of a future public offering, and any contractual restrictions on sale.
- Discount for Lack of Control (DLOC) applies to minority stakes. A minority shareholder cannot force a dividend, fire management, or sell the company. DLOC commonly ranges from 20% to 40%, with most applications landing around 30% to 35%.
These discounts can stack. A 10% stake in a private company might take a 30% DLOM and a 30% DLOC, cutting the proportionate enterprise value roughly in half. The discounts are applied to the per-share value calculated from the enterprise-level valuation, not to the enterprise value itself. Overstating or omitting these discounts is one of the most common errors in private company share valuations, and it’s the area where the IRS pushes back hardest during estate and gift tax audits.
If the Shares Will Price Employee Stock Options
A valuation used to set the exercise price on employee stock options has to meet a separate federal standard. Section 409A of the tax code requires that the exercise price be set at or above fair market value on the grant date. An employee who receives options priced below fair market value faces a 20% additional tax on the deferred compensation plus interest calculated at the federal underpayment rate plus one percentage point, going back to the year the compensation was first deferred.3Office of the Law Revision Counsel. 26 U.S. Code 409A – Inclusion in Gross Income of Deferred Compensation Under Nonqualified Deferred Compensation Plans The penalties hit the employee, not the company.
The IRS offers safe harbor methods that create a presumption the valuation reflects fair market value. The most commonly used safe harbor for private companies requires an independent appraisal by a qualified appraiser, completed no more than 12 months before the option grant date. Startups operating for fewer than ten years with no publicly traded equity can use a lighter-weight method: a written valuation performed by someone with at least five years of relevant experience in business valuation, investment banking, or a comparable field.4Internal Revenue Service. Internal Revenue Bulletin 2007-19
What a Professional Appraisal Costs
For early-stage companies needing a 409A valuation to price stock options, independent appraisals from specialized firms start around $1,000 to $3,000. More complex capital structures, multiple share classes, or pre-IPO companies push the cost to $8,000 or higher, particularly when the work is performed by a Big Four accounting firm. Full business appraisals for purposes like estate planning, partnership buyouts, or litigation support run higher, often $5,000 to $30,000 depending on company size and the scope of the engagement.
The cost of skipping a formal appraisal can dwarf the fee. An IRS challenge to an estate tax valuation or a 409A noncompliance finding can result in penalties and back taxes that make a $5,000 appraisal look trivial. If the valuation will support a tax filing, a legal agreement, or employee stock option grants, a qualified independent appraisal is almost always worth the expense.