The first several chapters of this text present the accounting and reporting for investment activities of businesses. The focus is on investments when one firm possesses either significant influence or control over another through ownership of voting shares. When one firm owns enough voting shares to be able to affect the decisions of another, accounting for the investment can become challenging and complex. The source of such complexities typically stems from the fact that transactions among the firms affiliated through ownership cannot be considered independent, arm’s-length transactions. As in many matters relating to financial reporting, we look to transactions with outside parties to provide a basis for accounting valuation. When firms are affiliated through a common of owners, measurement that recognize the relationships among the firms help to provide objectivity in financial reporting.