An examination of the economic analysis of the principles of accounting, this book shows that there are a number of questions for which appropriately constructed accounting data can give precise answers: whether there should be entry to or exit from an industry by a firm, for example, or whether or not a particular project should be undertaken. It not only highlights the importance of thinking clearly about the questions which are being answered with the use of accounting data; it also shows how accounts should be constructed in order to answer these questions. The authors address in particular two issues that are of great current interest in accounting--the appropriate way to adjust accounts for inflation, and the appropriate treatment of deferred taxation in accounts--and provide an analysis of the precise corrections required for both.