Basic EPS and diluted EPS are two measures used to show how much profit a company earns for each share of its common stock. The main difference is that basic EPS uses the current number of outstanding common shares, while diluted EPS considers the possibility that additional shares could be created from securities such as stock options, convertible bonds, or convertible preferred shares.

Basic EPS is generally calculated by dividing a company’s net income available to common shareholders by the weighted average number of common shares outstanding during a period. It provides a straightforward view of earnings attributable to existing common shareholders.

Diluted EPS goes a step further by assuming that potentially dilutive securities are converted into common shares when applicable. This increases the number of shares used in the calculation and can reduce the earnings attributed to each share. For example, if a company has many employee stock options that could become shares, diluted EPS may be lower than basic EPS.

The difference is important because diluted EPS can provide investors with a more conservative view of potential earnings per share. It highlights how existing shareholders’ ownership of future earnings could be affected if additional shares are issued.

Investors often examine both figures when analyzing a company's financial performance. A small difference between basic and diluted EPS may indicate limited potential dilution, while a larger difference can suggest that convertible securities, options, or other instruments could significantly increase the share count.

Therefore, basic EPS reflects current share ownership, whereas diluted EPS considers potential future dilution. Looking at both can provide a broader understanding of a company's earnings on a per-share basis.

Basic EPS and diluted EPS differ mainly in the treatment of potential common shares. Basic EPS calculates earnings per share using the company’s existing common shares. The calculation normally divides income available to common shareholders by the weighted average number of common shares outstanding during the period. Diluted EPS expands the calculation by considering securities that could create additional common shares. These may include convertible debt, stock options, warrants, and convertible preferred stock. If these securities are converted or exercised, the company’s total number of shares would rise. Unless earnings increase proportionally, earnings per share would decline. Therefore, diluted EPS provides a more conservative measurement of earnings per share when dilutive securities are present. A company might report basic EPS of $2.80 and diluted EPS of $2.55, for example. The gap between the two figures indicates the potential effect of additional shares. Investors may compare these figures to understand the company’s current earnings and the possible impact of dilution on existing shareholders.