‘Accounting’, as the term is utilized in textbooks, discussed by teachers and researchers, and practiced by accountants, has evolved a narrow and specific meaning. It refers to the financial transactions of enterprises, and is generally concerned with the process of codifying, summarizing and reporting on such transactions. Although recent years have seen (at least on the research front) accounting becoming more broadly defined to include such things as individual and group reactions to transactions or their results (see, e.g. the human information processing research conducted by Ashton, 1976, and others, and the efficient market research undertaken by Beaver, 1972, and others), other interpretations and analyses based on the term itself have not occurred. For example, a recent article by Silverman (1975) on accounting in organizations bears little or no resemblance to “our” sort of accounting. What Silverman is concerned with are accounts as stories, the tales individual members of organizations construct to explain, understand and justify the behavior of themselves and others in organizations. Just such interpretation and analysis provided the genesis of the arguments in the present paper which attempt to explain what management accounting is and, more importantly, why it exists. Prior to launching into this explanation, a short digression on another recent approach which addresses these same questions sets the stage for the ensuing analysis. The newest explanation for the what and why of managerial accounting that has appeared in the literature is agency theory. In simple form, the argument is advanced that a principal (or owner) will seek accounting reports from an agent (or manager) as a form of control in an attempt to ensure that his resources are not being squandered. A number of papers have appeared based on this relatively simple proposition, for example Zimmerman’s (1979) research on cost allocation, Demski & Feltham (1978) on budgeting and Atkinson (1979) on standard setting problems. The work has basically been concerned with the design of incentive and accounting systems to overcome the assumed fundamental incentive of an agent to provide a less than honest report on his utilization of assets. Importantly, as Zimmerman (1979) argues, the questions are addressed in a positive rather than normative form. The fundamental difficulty with what amounts to an agency theory of the firm is that unidimensional explanations of behavior are, in general, not rich enough to capture the variety of human experience. Central to agency notions are assumptions that agents as resourceful, evaluative, maximizing men (REMMS) will, in the absence of tight restraints and controls engage in activities such as shirking, theft and on-the-job leisure, or the consumption of prerequisites such as “. . . thick carpets, air-conditioning or congenial employees” (Zimmerman, 1979, p. 506). The behavioral assumptions of REM men must be severely questioned in the light of the last twenty years of research into the area of human choice (March, 1978); the elements of Taylorism in the description of expected behaviors is an overly simplistic and inaccurate model of behavior in organizational settings. For example, the role of power in