This paper examines how technology choices affect bank interest margins and thus bank equity risk. We show that a higher level of backward technology, a higher administrative cost (e.g., personnel cost) with a lower fixed cost (e.g., the investment cost of Automated Teller Machines), has positive effects on bank interest margins, but has negative effects on bank risks. As a result, the bank might succeed in making more profits and reducing higher risks by introducing a backward technology rather than an advanced technology.
