Competent financing mechanisms do not only enhance the cost effectiveness of social or public services, they can also guarantee quality outcomes of the services, and ensure better risk diversification. Innovative financing mechanisms have been adopted in major developed regions, such as the UK, the US and supranationals. Coupled with the advancement of impact investment, these innovative approaches have unleashed the potential influence of governments, businesses and investors on the delivery of substantial social impacts. Hong Kong can also improve its current mechanism by leveraging on the experience of other.