DZ Bank AG is the second largest bank in Germany by asset size and the central institution for around 800 cooperative banks and their around 8,500 branch offices. Within the German Cooperative Financial Group, which is one of Germany's largest private sector financial service organizations and manages assets of around 1.200 trillion euros, DZ Bank functions both as a central institution and as a corporate and investment bank.

The German Cooperative Financial Group is a major cooperative banking network in Germany that includes local banks named Volksbanken and Raiffeisenbanken, the latter in tribute to 19th-century cooperative movement pioneer Friedrich Wilhelm Raiffeisen. The Cooperative Group represents one of the three "pillars" of Germany's banking sector, the other two being, respectively, the Sparkassen-Finanzgruppe of public banks, and the commercial banking sector represented by the Association of German Banks.