Final answer:
Schedule M-2 is used to reconcile a corporation's beginning and ending balance in its unappropriated retained earnings account, typically in the Form 1120 tax return.
Step-by-step explanation:
A reconciliation of the corporation's beginning and ending balance in its unappropriated retained earnings account is reported on Schedule M-2.
This schedule is typically part of the U.S. corporate income tax return, Form 1120, and it provides a detailed look at changes in a corporation's retained earnings over the fiscal year.
It includes items such as net income, dividends paid, and any adjustments for items that affected retained earnings but were not reflected in the income statement.