"Building an Impact Economy in America" provides a condensed summary of a June 2011 Summit on the impact economy convened by the White House and the Aspen Institute Program on Philanthropy and Social Innovation's Impact Economy Initiative. The summit convened more than 150 leaders in the field -- investors, philanthropists, executives, and policymakers -- to discuss the emergence of the impact economy. The summit was devoted to understanding and articulating the key issues surrounding the field, and to considering its long-term scope and shape. The report includes an exposition of the themes and principles that surfaced, a synthesis of recommendations, and transcripts of select remarks.