The G20’s work on sustainable finance under Argentina’s Presidency builds on earlier work focused on green finance under China’s (2016) and Germany’s (2017) G20 Presidencies. The Green Finance Study Group (GFSG) was established under China’s G20 Presidency in 2016 to advance this work. The mandate of the GFSG was expanded in 2018 under Argentina’s G20 Presidency to become the Sustainable Finance Study Group (SFSG). The SFSG broadly understands sustainable finance as financial services, products, processes as well as institutional and market arrangements that contribute directly and indirectly to the delivery of the Sustainable Development Goals (SDGs). The SFSG is focusing on pursuing positive environmental impacts of investments that could also generate social and economic co-benefits (e.g., job creation, growth enhancement, and technological development). Sustainable finance has developed at a considerable pace when measured against various yardsticks. Financial systems are increasingly aligned to sustainable development.1 Sustainable finance has also become an established part of the G20 and other international fora. Sustainability related considerations and more recently, the Sustainable Development Goals (SDGs), are increasingly factored into investment decision-making and product development in a growing number of financial institutions including pension funds, banks and insurance companies. Related products, such as green bonds and other sustainability linked investment products and tools are growing at a rapid rate.