Verónica María Magario was born on 26 May 1969 in Santa Fe de la Vera Cruz, in Santa Fe Province. Her parents were María Eugenia Calderón, a school teacher, and Raúl Magario, a member of Montoneros and the organization's financial administrator. She spent most of her childhood in San Isidro and Ramos Mejía, but after the 1976 coup d'état, her family was forced into exile in Mexico, where she lived for eight years.