Socialist economics refers to the economic theories, practices, and norms of hypothetical and existing socialist economic systems.
A socialist economic system is characterised by social ownership and democratic control of the means of production, which may mean autonomous cooperatives or direct public ownership; wherein production is carried out directly for use. Where markets are utilized for allocating inputs and capital goods among economic units, the designation market socialism is used. When planning is utilized, the economic system is designated a planned socialist economy. Non-market forms of socialism usually include a system of accounting based on calculation-in-kind or a direct measure of labor-time as a means to value resources and goods.
The term socialist economics may also be applied to analysis of former and existing economic systems that call themselves "socialist", such as the works of Hungarian economist János Kornai.
Socialist economics has been associated with different schools of economic thought. Marxian economics provided a foundation for socialism based on analysis of capitalism, while neoclassical economics and evolutionary economics provided comprehensive models of socialism. During the 20th century, proposals and models for both planned economies and market socialism were based heavily on neoclassical economics or a synthesis of neoclassical economics with Marxian or institutional economics.