bank

A bank is a business which provides financial services, usually for profit. A commercial bank accepts deposits from customers and in turn makes loans based on those deposits. Traditional banking services include receiving deposits of money, lending money and processing transactions. Some banks (called Banks of issue) issue banknotes as legal tender. Many banks offer ancillary financial services to make additional profit; for example: selling insurance products, investment products or stock broking.

Currently in most jurisdictions commercial banks are regulated and require permission to operate. Operational authority is granted by bank regulatory authorities and provide rights to conduct the most fundamental banking services such as accepting deposits and making loans. A commercial bank is usually defined as an institution that both accepts deposits and makes loans; there are also financial institutions that provide selected banking services without meeting the legal definition of a bank (see banking institutions).

Banks have a long history, and have influenced economies and politics for centuries. In history, the primary purpose of a bank was to provide liquidity to trading companies. Banks advanced funds to allow businesses to purchase inventory, and collected those funds back with interest when the goods were sold. For centuries, the banking industry only dealt with businesses, not consumers. Commercial lending today is a very intense activity, with banks carefully analysing the financial condition of its business clients to determine the level of risk in each loan transaction. Banking services have expanded to include services directed at individuals and risk in these much smaller transactions are pooled.