The risks derived from climate change and the social inequalities of the economic model en-danger the continuity of society as we know it. The investment community is developing financial products in order to channel the environ-mental and social transition process, with green bonds and social bonds being key instruments to facilitate the change of model. In just a few years, investments made in assets that respect environmental sustainability, social responsibility and good management practices have in-creased from 12% to 42% of total investments made by investors around the world. The current paper it is intended to discuss the regulation and evolution of green bonds since its inception in 2007, globally and nationally, focusing on the principles of implementation, benefits and role of the COVID-19 pandemic in issuing green bonds.