2023-01-302023-01-302019-06CARVALHO, André Cutrim; CARVALHO, David Ferreira. A importância econômica do princípio da demanda efetiva em Keynes-Kalecki no âmbito da economia política. Teoria e Evidência Econômica, online, v. 25, n. 52, p. 182-202, jan./jun. 2019. DOI: http://dx.doi.org/10.5335/rtee.v24i51.8419. Disponível em: http://repositorio.ufpa.br:8080/jspui/handle/2011/15233. Acesso em:.2318-8448https://repositorio.ufpa.br/handle/2011/15233The purpose of this article is to rescue the conceptual proximity relationship between the principle of effective demand by John Maynard Keynes and the principle of effective de mand by Michal Kalecki. According to the PDE, economic agents determine the level of output and, therefore, employment when they make the decision to produce or invest in a monetary economy of capitalist production. To criticize Say’s Law and, thus, the founda tions of economic orthodoxy, Keynes and, later, Kalecki created a legacy through a new taxonomy, which gave political economy a different conceptual framework to criticize say’s law and, of course, the fundamentals pertaining to (neo) classical orthodoxy.Acesso Abertohttp://creativecommons.org/licenses/by-nc-nd/4.0/Princípio da demanda efetivaKeynesKaleckiLei de SayEconomia políticaPrinciple of effective demandSay’s LawPolitical economyArtigo de Periódico10.5335/rtee.v24i51.8419