The theory of monopoly capital is central to any satisfactory analysis of accumulation and stagnation in advanced capitalist economies. This major new book presents in one volume recent discussions of monopoly capitalism to emphasize the centrality and vitality of this tradition in modern political economy.Following the work of Kalecki, Steindl and Baran and Sweezy, a number of leading economists address key issues such as the calculation of the economic surplus, the division of income between labour and capital, oligopoly collusion over output and pricing, the growth of unproductive activity, the degree of monopoly, surplus absorption and stagnation and the history of the present crisis.