Financial institutions occupy a central role in equity and debt markets, providing the finance that shapes economic development and thus environmental pressures. Environmental regulation has traditionally focused on development itself but not those that financially sponsor developers. To achieve an environmentally sustainable economy in Canada, new regulations and policies to promote environmentally friendly financing in the financial services sector are necessary. This article explains why financing environmental change is crucial, surveys the main private financial institutions in Canada relevant to this task, and makes recommendations on how financial regulation and its broader institutional context can be reformed to support sustainable development.