Modeling the Economic Surplus in a SAM Framework Erik K. Olsen Dept. of Economics Univ. of Missouri Kansas City 5100 Rockhill Rd. Kansas City, MO 64110
[email protected] June 21, 2011 1 Introduction The concept of an economic surplus is something that Marxian and Sra¢ an economics share in common. Both theories recognize the importance of an eco- nomic surplus that is produced and subsequently utilized for various purposes, but they each de…ne this surplus in very di¤erent ways. The surplus of Sra¢ an theory is the net product of the economy as de…ned in conventional national accounts. The surplus in Marxian theory is de…ned through its class theory. Draft prepared for 2011 Association for Heterodox Economics conference, Nottingham Trent University. 1 From the Marxist perspective the surplus created by production provides the resources that support the array of nonproduction activities associated with the capitalist enterprise as well as for many activities and individuals that may be quite distant. Shareholders of a corporation, for example, receive an in- come derived from the surplus created in production, but this is simply one of many potential uses. Identifying the connection between the surplus created in production and the subsequent recipients is the task of Marxian class theory, and this provides a means to understand how the surplus created in production plays a role in the reproduction of the economic system itself. This emphasis on a complex class structure that is part of the fabric of the economy is what distinguishes Marxian class theory from the Sra¢ an one, and it is also what distinguishes their two di¤erent theories of surplus.