儲蓄互助社
Credit unions often form cooperatives among themselves to provide services to members. A credit union service organization (CUSO) is generally a for-profit subsidiary of one or more credit unions formed for this purpose. For example, CO-OP Financial Services, the largest credit-union-owned interbank network in the United States, provides an ATM network and shared branching services to credit unions. Other examples of cooperatives among credit unions include credit counselling services as well as insurance and investment services.