Financial Ratios & Valuation
Earnings Per Share (EPS): Formula and Types
Earnings per share (EPS) is a company’s net income divided by its weighted-average common shares outstanding, expressed as profit per share. It tells you how much of a period’s profit is attributable to each share of common stock. U.S. public companies must report two versions on the face of the income statement: basic EPS and diluted EPS.
EPS drives valuation. It is the “E” in the price-to-earnings ratio, the anchor for analyst estimates, and the number markets react to each quarter. This guide covers the formula (including the treatment of preferred dividends), the difference between basic and diluted EPS, the GAAP requirement to report it, and a worked example.
The EPS formula
Basic EPS equals net income minus preferred dividends, divided by the weighted-average number of common shares outstanding during the period. The subtraction of preferred dividends is the step most people miss. The denominator is weighted by time, not a simple year-end count.
The formula:
Basic EPS = (Net Income − Preferred Dividends) / Weighted-Average Common Shares Outstanding
Each input has a specific meaning:
- Net income: the bottom line of the income statement, after taxes, interest, and all expenses.
- Preferred dividends: dividends owed to preferred shareholders for the period. Preferred holders are paid before common holders, so their claim is removed from the numerator. This is subtracted whether or not the dividends were actually paid in cash, depending on whether the preferred stock is cumulative (see below).
- Weighted-average common shares: the share count adjusted for the portion of the period each block was outstanding, because companies issue and buy back shares mid-period.
Why preferred dividends are subtracted
EPS measures earnings available to common shareholders, so any income already promised to preferred shareholders is removed first. For cumulative preferred stock, subtract the period’s dividend whether or not it was declared. For noncumulative preferred stock, subtract only dividends actually declared in the period.
The distinction matters. Cumulative preferred stock accrues unpaid dividends that must be satisfied before common holders receive anything, so GAAP requires the current-period amount to reduce the numerator regardless of declaration. Noncumulative preferred loses undeclared dividends, so only declared amounts reduce income available to common stockholders. Misclassifying this understates or overstates EPS.
Why shares are weighted by time
The denominator uses a weighted average because share counts change during the year. A company with 10 million shares for the first six months and 12 million for the second six months has a weighted-average of 11 million shares, not 12 million. Using the year-end count would distort the per-share figure.
To weight the count, multiply each share block by the fraction of the period it was outstanding, then add the pieces. Share buybacks reduce the average; new issuances increase it. Stock splits and stock dividends are applied retroactively to all periods presented, as if they had always existed.
Basic EPS vs diluted EPS
Basic EPS uses only shares currently outstanding. Diluted EPS assumes that dilutive securities (stock options, warrants, convertible bonds, and convertible preferred stock) convert into common shares, increasing the denominator. Diluted EPS is always equal to or lower than basic EPS, because it reflects the worst-case share count a common holder could face.
The table below compares the two:
| Feature | Basic EPS | Diluted EPS |
|---|---|---|
| Denominator | Weighted-average common shares outstanding | Basic shares plus potential shares from dilutive securities |
| Securities included | Common stock only | Options, warrants, convertible debt, convertible preferred |
| Method for options/warrants | Not applicable | Treasury stock method |
| Method for convertibles | Not applicable | If-converted method |
| Typical relationship | Higher | Equal to or lower than basic |
| Purpose | Actual current profit per share | Profit per share if all dilutive instruments convert |
How dilutive securities enter the denominator
Two methods add potential shares. The treasury stock method handles options and warrants: it assumes the instruments are exercised and the proceeds are used to buy back shares at the average market price, adding only the net new shares. The if-converted method handles convertible debt and convertible preferred: it assumes conversion at the start of the period and adjusts both the numerator and denominator.
A security is included only if it is dilutive, meaning it lowers EPS. Antidilutive securities (those that would raise EPS) are excluded from diluted EPS. For convertible debt under the if-converted method, the after-tax interest expense is added back to the numerator; for convertible preferred, the preferred dividend is added back. Options are dilutive only when the exercise price is below the average market price for the period.
The GAAP requirement to report EPS
Under U.S. GAAP, ASC 260 (Earnings Per Share) requires public companies and entities filing to sell stock publicly to present EPS on the face of the income statement. Companies with a complex capital structure must show both basic and diluted EPS for income from continuing operations and for net income, with equal prominence. Private companies are generally not required to present EPS.
ASC 260 also requires disclosure. Entities must reconcile the numerator and denominator used for basic and diluted EPS, showing the individual effect of each dilutive security. The EPS figures appear directly below net income, along with the share counts used. IFRS has a parallel standard, IAS 33, with substantially similar mechanics, so cross-border comparisons are usually workable.
A “simple” capital structure (no dilutive options, warrants, or convertibles) requires only basic EPS. A “complex” structure requires both. Because most public companies grant stock options, the majority report both figures every quarter.
Worked example
Assume Company A reports the following for the fiscal year:
- Net income: $5,000,000
- Cumulative preferred dividends: $500,000
- Weighted-average common shares outstanding: 2,000,000
- Employee stock options: 200,000 potential shares, of which the treasury stock method yields 60,000 net new dilutive shares
Step 1: Basic EPS. Subtract preferred dividends from net income, then divide by weighted-average shares.
Income available to common = $5,000,000 − $500,000 = $4,500,000
Basic EPS = $4,500,000 / 2,000,000 = $2.25 per share
Step 2: Diluted EPS. Add the 60,000 net dilutive shares to the denominator. The options add no income, so the numerator is unchanged.
Diluted EPS = $4,500,000 / (2,000,000 + 60,000) = $4,500,000 / 2,060,000 = $2.18 per share
The $0.07 gap between $2.25 and $2.18 is the dilution effect. If Company A also had convertible bonds, the if-converted method would add the bonds’ shares to the denominator and add the after-tax interest back to the numerator, then EPS would be recalculated and reported only if the result was dilutive.
How to read and use EPS
EPS is most useful in context, not in isolation. It sits near the bottom of the income statement, so learning how to read an income statement shows where net income (the numerator) comes from. Compare a company’s EPS across periods to see the trend, and use it alongside profitability measures like return on equity to judge how efficiently the company turns capital into profit.
Watch for distortions. One-time gains, changes in share count, and the gap between basic and diluted EPS can all mislead. A rising EPS driven by buybacks (fewer shares) is different from one driven by higher net income, and retained profit feeds directly into equity, so pairing EPS with retained earnings and liquidity checks like the quick ratio gives a fuller picture. Reading EPS alongside the full financial statements, and reconciling it against reported net income, is the reliable approach.
Frequently asked questions
What is a good EPS?
There is no universal “good” EPS, because the figure depends on share count and industry. A company with fewer shares will show a higher EPS than an identical company with more shares. What matters is the trend over time, the comparison to analyst estimates, and the EPS relative to the stock price (the P/E ratio). Rising EPS driven by genuine profit growth is generally favorable.
What is the difference between basic and diluted EPS?
Basic EPS divides income available to common shareholders by the weighted-average common shares outstanding. Diluted EPS assumes all dilutive securities (options, warrants, convertibles) convert into common shares, increasing the denominator. Diluted EPS is always equal to or lower than basic EPS. It represents the more conservative, worst-case profit per share and is the figure many analysts prefer.
Why are preferred dividends subtracted from EPS?
EPS measures earnings available to common shareholders, and preferred shareholders have a prior claim on income. Their dividends are subtracted from net income before dividing by common shares. For cumulative preferred stock, the period’s dividend is subtracted whether or not it was declared. For noncumulative preferred, only dividends actually declared in the period are subtracted.
Is EPS required under GAAP?
Yes, for public companies. ASC 260 requires entities with publicly traded common stock (or those filing to sell stock publicly) to present EPS on the face of the income statement. Companies with a complex capital structure must show both basic and diluted EPS with equal prominence. Private companies are generally exempt from presenting EPS.
Why is EPS calculated with weighted-average shares?
Share counts change during a period as companies issue new shares or buy back existing ones. A weighted average multiplies each share block by the fraction of the period it was outstanding, giving a count that reflects the full period rather than a single date. Using the year-end count alone would distort the per-share result, often materially after a large issuance or buyback.
How does diluted EPS handle stock options?
Diluted EPS uses the treasury stock method for options and warrants. It assumes the options are exercised, then assumes the company uses the proceeds to repurchase shares at the average market price for the period. Only the net new shares (shares issued minus shares repurchased) are added to the denominator. Options are dilutive only when their exercise price sits below the average market price.
Reviewed by The Ledgerism Editorial Team. Last reviewed: July 2026.