G. Deigan Morris
Emeritus Professor of Accounting and Control
Strategic planning frameworks provide a means of combining internal data about the firms capabilities with external information about the competitive environment in a manner designed to guide resource allocation. The value chain approach to strategic planning, as described by Michael Porter in his book Competitive Advantage (1985), is a recent addition to this family of planning frameworks. In this article, some of the difficulties in using accounting data for value chain analysis are addressed. These difficulties are divided into those that are inherent, because of differences in methods of data accumulation, and those that are avoidable.