Banks are commercial institutions and like any other for-profit commercial venture, aim to increase their profits by expanding the business. Unlike other stores and shops, banks are selling services rather than products. Banking is a unique business model, and banks have various sources of income like interest spread, commissions, fees, and other revenues. Learn how banks get their funds and how they make money on services. In this article, we look more closely at how banks do business and how they earn profits and explore the value chain of the banking industry.