Market socialism is a type of economic system involving social ownership of the means of production within the framework of a market economy. Various models for such a system exist, usually involving cooperative enterprises and sometimes a mix that includes public or private enterprises. In contrast to the majority of historic self-described socialist economies, which have substituted some form of economic planning for the market mechanism, market socialists wish to retain the use of supply and demand signals to guide the allocation of capital goods and the means of production. Under such a system, depending on whether socially owned firms are state-owned or operated as worker cooperatives, profits may variously be used to directly remunerate employees, accrue to society at large as the source of public finance, or be distributed amongst the population in a social dividend.

Market socialism can be distinguished from the concept of the mixed economy because most models of market socialism propose complete and self-regulating systems, unlike the mixed economy. While social democracy aims to achieve greater economic stability and equality through policy measures such as taxes, subsidies, and social welfare programs, market socialism aims to achieve similar goals through changing patterns of enterprise ownership and management.

Though the term "market socialism" only emerged in the 1920s during the socialist calculation debate, a number of pre-Marx socialists, including the Ricardian socialist economists and mutualist philosophers, conceived of socialism as a natural development of the market principles of classical economics, and proposed the creation of co-operative enterprises to compete in a free-market economy. The aim of such proposals was to eliminate exploitation by allowing individuals to receive the full product of their labor, while removing the market-distorting effects of concentrating ownership and wealth in the hands of a small class of private property owners.

Although sometimes described as "market socialism", the Lange model is a form of market simulated planning where a central planning board allocates investment and capital goods by simulating factor market transactions, while markets allocate labor and consumer goods. The system was devised by socialist economists who believed that a socialist economy could neither function on the basis of calculation in natural units nor through solving a system of simultaneous equations for economic coordination.

Real-world attempts to create market socialist economies have only partially implemented the measures envisioned by its theorists, but the term has sometimes been used to describe the results of various attempts at liberalization in the Eastern Bloc including Hungary's New Economic Mechanism, the economy of Yugoslavia, Soviet perestroika, and the reform and opening up of China, as well as Lenin's New Economic Policy.

Theoretical history Classical economics The key theoretical basis for market socialism is the negation of the underlying expropriation of surplus value present in other modes of production. Socialist theories that favored the market date back to the Ricardian socialists and anarchist economists, who advocated a free market combined with public ownership or mutual ownership of the means of production.

Proponents of early market socialism include the Ricardian socialist economists, the classical liberal philosopher John Stuart Mill and the anarchist philosopher Pierre-Joseph Proudhon. These models of socialism entailed perfecting or improving the market mechanism and free price system by removing distortions caused by exploitation, private property and alienated labor.

This form of market socialism has been termed free-market socialism because it does not involve planners.

John Stuart Mill Mill's early economic philosophy was one of capitalistic free markets that he moved toward a more socialist bent, adding chapters to his Principles of Political Economy in defence of a socialist outlook, and defending some socialist causes. Within this revised work he also made the radical proposal that the whole wage system be abolished in favour of a co-operative wage system. Nonetheless, some of his views on the idea of flat taxation remained, albeit altered in the third edition of the Principles of Political Economy to reflect a concern for differentiating restrictions on unearned incomes which he favoured; and those on earned incomes, which he did not favour. (3rd edition; the passage about flat taxation was altered by the author in this edition, which is acknowledged in this online edition's footnote 8. This sentence replaced in the 3rd ed. a sentence of the original: "It is partial taxation, which is a mild form of robbery".

Mill's Principles, first published in 1848, was one of the most widely read of all books on economics in the period. As Adam Smith's Wealth of Nations had during an earlier period, Mill's Principles dominated economics teaching. In the case of Oxford University, it was the standard text until 1919, when it was replaced by Alfred Marshall's Principles of Economics.

In later editions of Principles of Political Economy, Mill would argue that "as far as economic theory was concerned, there is nothing in principle in economic theory that precludes an economic order based on socialist policies".

Mill also promoted substituting capitalist businesses with worker cooperatives, writing: The form of association, however, which if mankind continue to improve, must be expected in the end to predominate, is not that which can exist between a capitalist as chief, and work-people without a voice in the management, but the association of the labourers themselves on terms of equality, collectively owning the capital with which they carry on their operations and working under managers elected and removable by themselves.

In his later thought, he advocated for a cooperative economic order, an economy based on enterprises run by workers themselves in an open market, rather than the employment-wage relationship of capitalist companies.Where Did Mill Go Wrong?: Why the Capital-Managed Firm Rather than the Labor-Managed Enterprise Is the Predominant Organizational Form in Market Economies, by Schwartz, Justin. 2011. Ohio State Law Journal, vol. 73, no. 2, 2012Manioudis, Manolis & Milonakis, Dimitris. (2024). An Early Anticipation of Market Socialism? Liberalism, Heresy, and Knowledge in John Stuart Mill’s Political Economy of Socialism. Science & Society, 88(3), 368-394.

Mutualism

Pierre-Joseph Proudhon developed a theoretical system called mutualism which attacks the legitimacy of existing property rights, subsidies, corporations, banking and rent. Proudhon envisioned a decentralized market where people would enter the market with equal power, negating wage slavery. Proponents believe that cooperatives, credit unions and other forms of worker ownership would become viable without being subject to the state. Market socialism has also been used to describe some individualist anarchist works which argue that free markets help workers and weaken capitalists.

Individualist anarchism in the United States For American anarchist historian Eunice Minette Schuster, "[i]t is apparent [...] that Proudhonian Anarchism was to be found in the United States at least as early as 1848 and that it was not conscious of its affinity to the Individualist Anarchism of Josiah Warren and Stephen Pearl Andrews. [...] William B. Greene presented this Proudhonian Mutualism in its purest and most systematic form". Josiah Warren is widely regarded as the first American anarchist, and the four-page weekly paper he edited during 1833, The Peaceful Revolutionist, was the first anarchist periodical published, an enterprise for which he built his own printing press, cast his own type, and made his own printing plates.

Warren was a follower of Robert Owen and joined Owen's community at New Harmony, Indiana. Josiah Warren termed the phrase "cost the limit of price", with "cost" here referring not to monetary price paid but the labor one exerted to produce an item."A watch has a cost and a value. The COST consists of the amount of labor bestowed on the mineral or natural wealth, in converting it into metals...". Warren, Josiah. Equitable Commerce Therefore, "[h]e proposed a system to pay people with certificates indicating how many hours of work they did. They could exchange the notes at local time stores for goods that took the same amount of time to produce". He put his theories to the test by establishing an experimental "labor for labor store" called the Cincinnati Time Store where trade was facilitated by notes backed by a promise to perform labor. The store proved successful and operated for three years after which it was closed so that Warren could pursue establishing colonies based on mutualism. These included Utopia and Modern Times. Warren said that Stephen Pearl Andrews' The Science of Society, published in 1852, was the most lucid and complete exposition of Warren's own theories.

Later, Benjamin Tucker fused the economics of Warren and Proudhon and published these ideas in Liberty calling them "Anarchistic-Socialism". Tucker said: "[T]he fact that one class of men are dependent for their living upon the sale of their labour, while another class of men are relieved of the necessity of labour by being legally privileged to sell something that is not labour. [...] And to such a state of things I am as much opposed as anyone. But the minute you remove privilege [...] every man will be a labourer exchanging with fellow-labourers. [...] What Anarchistic-Socialism aims to abolish is usury [...] it wants to deprive capital of its reward". American individualist anarchists such as Tucker saw themselves as economic market socialists and political individualists while arguing that their "anarchistic socialism" or "individual anarchism" was "consistent Manchesterism". Modern market anarchism is based on a revival of such market socialist theories.

Neoclassical economics

Early 20th century Beginning in the early 20th century, neoclassical economic theory provided the theoretical basis for more comprehensive models of market socialism. Early neoclassical models of socialism included a role for a central planning board (CPB) in setting prices equal to marginal cost in order to achieve Pareto efficiency. Although these early models did not rely on conventional markets, they were labeled market socialist for their utilization of financial prices and calculation. Alternative outlines for market socialism involve models where socially owned enterprises or producer co-operatives operate within free markets under the criterion of profitability. In recent models proposed by American neoclassical economists, public ownership of the means of production is achieved through public ownership of equity and social control of investment.

The earliest models of neoclassical socialism were developed by Léon Walras, Enrico Barone (1908) and Oskar R. Lange (c. 1936). Lange and Fred M. Taylor (1929) proposed that central planning boards set prices through "trial and error", making adjustments as shortages and surpluses occurred rather than relying on a free price mechanism. If there were shortages, prices would be raised; if there were surpluses, prices would be lowered. Raising the prices would encourage businesses to increase production, driven by their desire to increase their profits, and in doing so eliminate the shortage. Lowering the prices would encourage businesses to curtail production to prevent losses, which would eliminate the surplus. Therefore, it would be a simulation of the market mechanism, which Lange thought would be capable of effectively managing supply and demand.