This book lays out a vision for transforming the current economic model and financial system to make capital work in the best interests of society and the environment. The authors argue that finance can be reinvented as a "toolkit" and powerful lever for directing capital towards social and technological innovations, sustainable infrastructure development, and the energy transition. Positive Finance presents specific ways to reallocate capital in order to reduce inequality while addressing environmental constraints. The goal is to prove that financing solutions to current economic and sustainability crises is achievable through reinventing finance as a force for the general interest.