The MaRS social innovation team (SiG@MaRS) is actively developing programs to support the launch and growth of social ventures, enhance the skills and networks of social entrepreneurs, explore new instruments of social finance, foster opportunities for technology platforms to help scale social ventures and build the social enterprise community. This white paper is part of a series that explores the opportunities and challenges supporting the growth of social ventures in Ontario. One identified challenge is the lack of a hybrid legal structure for social ventures in Ontario similar to structures introduced in the U.K. and the U.S. to promote the growth of social ventures in those market places.