In August 2012, Goldman Sachs Bank’s Urban Investment Group (UIG) announced the first social impact bond (SIB) in the United States, a $9.6 million loan it would make to support the delivery of therapeutic services to 16- to 18-year-olds incarcerated on Rikers Island. The loan will be repaid based on the actual and projected cost savings realized by the New York City Department of Correction as a result of the expected decrease in recidivism. This unique public-private partnership between the City of New York, MDRC, the Osborne Association, Bloomberg Philanthropies, and Goldman Sachs leverages high-quality nonprofit capacity, private-sector capital, and philanthropic support to address a pressing community challenge.