She currently serves as the Governor of the Central Bank of Chile[1] and previously held the position of head of the Ministry of Finance's Budget Office during Sebastián Piñera's first presidency from 2010 to 2014.

Born in Viña del Mar, Costa moved to the capital city at a young age.

She attended the Saint Gabriel School and later pursued a degree in Economics at the Pontifical Catholic University of Chile, following in the footsteps of her father, Horacio, who had also studied the same field and worked at the state petroleum company Empresa Nacional del Petróleo (ENAP).

One of her responsibilities was to ensure compliance with the limits imposed by the International Monetary Fund during Chile's agreement with the organization.

[5] In 1992, Costa began working at the neoliberal think-tank Freedom and Development Institute (Instituto Libertad y Desarrollo).