A “commercial bank” is a type of financial institution that offers checking account services, disburses different loans, takes deposits, and sells certificates of deposit (CDs) and savings accounts to individuals and small businesses. The majority of people do their financial transactions with commercial banks. To earn income, commercial banks issue and collect interest on loans such as mortgages, business loans, auto loans, and personal loans. Deposits from customers provide banks with the funding they need to make these loans. Basic banking services are provided by commercial banks to the general public, including both small and medium-sized enterprises and individual customers. Commercial banks have historically been situated in structures where clients come to conduct ordinary banking transactions using ATMs and teller window services. Most banks now enable their clients todo the majority of in-person transactions-including transfers, deposits, and bill payments online, thanks to advancements in technology.