This article aims to present the legitimization process of macroprudential capital flow management policies as a tool for economic stability after 2009, when such policies started to have the support of multilateral institutions such as the IMF. To this end, we conducted extensive bibliographical research, bringing together several academic strands to present how this process of transformation and acceptance developed and the motivations, impacts, and effective results of these policies. As a result, we verified that the use and effectiveness of these management strategies must follow an arrangement in which their scope must involve several other policies of the fiscal, macroprudential, monetary, exchange rate, and capital control, mainly in emerging economies and in these cases, reduce financial fragility and maintain the macroeconomic stability of these countries in the face of adverse shocks to the balance of payments caused by excessive capital inflows or outflows, mitigating the resulting externalities in the process.Keywords: Macroprudential policies / Stability / Capital flow