This joint study of the Luxembourg House of Financial Technology (LHoFT) and Deloitte Luxembourg explores the role that financial technologies (FinTechs) can play in supporting financial institutions (FIs) in their sustainable finance efforts. Based on interviews with 27 entities ranging from FinTechs to FIs, associations and other public establishments, and complemented by desk research, this study demonstrates several opportunities which, to be realised, require the removal of certain barriers and mitigation of certain challenges. While the study draws from findings across the EU overall, it is strongly focused on the status of and implications for Luxembourg.