May 11, 2017 The Big Six Canadian banks are a dominant component of the Canadian financial system. How they finance their business activities is fundamental to how effective they are. Retail and commercial deposits along with wholesale funding represent the two major sources of funds for Canadian banks. What wholesale funding instruments do the Big Six banks use? How do they choose between different funding sources, funding strategies and why? How have banks changed their funding mix since the 2007–09 global financial crisis?