Coral reefs are critical ecosystems that are home to more than 25% of all known marine species, while occupying less than one quarter of 1% of the Earth’s marine environment (IUCN, 2013). In June 2018, the 50 Reefs initiative culminated with the publication of a scientific study on coral reefs that are least vulnerable to climate change and have the greatest capacity to repopulate other reefs over time. To contibute to 50 Reefs, the Wildlife Conservation Society (WCS) worked in conjunction with the Conservation Finance Alliance (CFA) to create a working guide on the financial tools available for coral reef conservation. Financial tools are a means of securing reliable funding for conservation activities such as creating new protected areas, restoring ecosystems, and promoting sustainable tourism or aligning incentives of actors to improve conservation outcomes. This guide is intended to serve as a reference and resource for protected area managers and other professionals charged with achieving conservation and protection of coral reefs, and ensuring adequate financial means to do so.