How did Robert Nozick’s minimal-state theory differ from socialism?

Robert Nozick’s minimal-state theory differs from socialism primarily in its view of state power and individual rights. In his work Anarchy, State, and Utopia, Nozick argues that the only morally justified state is a "night watchman" state, limited strictly to protecting citizens against violence, theft, and fraud.1

The fundamental differences include:

• Economic Regulation: While socialism advocates for state intervention to regulate economic activity and redistribute wealth to achieve greater equality, Nozick contends that such actions violate the natural rights of citizens to dispose of their property and labor as they see fit.1
• Taxation: Nozick views mandatory taxation for social services—such as public education or health care—as unjust, characterizing it as a form of "forced labour".1
• Distributive Justice: Nozick rejects patterned theories of justice (like those seeking specific egalitarian outcomes). Instead, he proposes the entitlement theory of justice, arguing that any distribution of wealth is just if it arises from legitimate, voluntary transactions.2

Nozick famously argued that a socialist society would necessarily "forbid capitalist acts between consenting adults," thereby intruding on individual liberty.2