This project paper concerns to provide additional financing to the Republic of Chile for the scaling-up of the Social Protection Technical Assistance Project. The additional financing will help finance the costs associated with the scale-up of the project’s impact and development effectiveness. The additional activities to be financed are related to the further strengthening of the system of social protection in Chile through: (1) the continued operation and improvements in Chile Solidario, designed to support extremely poor families and other vulnerable individuals (including to date older adults living alone, the homeless, and children of prisoners); and (2) the recent extension of the system to cover young children through Chile Crece Contigo (integrated system of protection for young children).