This document discusses social impact bonds (SIBs) and outcomes-based contracting between Latitude Network and Melbourne City Mission (MCM). It provides definitions for various social finance terms. It outlines the spectrum of social finance from traditional philanthropy to impact investing. It discusses what makes a good candidate for a SIB or outcomes-based contract. It summarizes experiences with SIBs so far and discusses trends moving from SIBs to outcomes-based partnerships. It provides advice for non-profits on preparing for an outcomes-focused future.