Regulation S-X Rule 5-02.30 requires retained earnings to appear as its own caption within stockholders' equity, separate from additional paid-in capital and accumulated other comprehensive income, and split between appropriated and unappropriated amounts where applicable. After a quasi-reorganization, the rule also requires the company to show the date from which the new retained earnings balance runs. In XBRL the balance is tagged RetainedEarningsAccumulatedDeficit, and a deficit is reported as a negative value.
The balance changes each period by net income or loss attributable to the parent, less dividends declared on common and preferred stock. Other items can also pass through it directly, including the cumulative effect of adopting certain new accounting standards, some stock dividends, and, at some companies, the portion of a share repurchase price recorded when shares are retired rather than held in treasury. The statement of stockholders' equity reconciles these movements.
A long record of rising retained earnings shows that a company has been profitable and has reinvested part of those profits. The balance is not directly comparable across companies, though: a firm that pays out most of its earnings or buys back large amounts of stock can have modest or even negative retained earnings while being highly profitable. Many young growth companies show large accumulated deficits simply because they have not yet reached cumulative profitability. Analysts often look at retained earnings relative to total equity or total assets as one measure of how self-funded a company is.