BANK definition: 1. an organization where people and businesses can invest or borrow money, change it to foreign…. Learn more. Banks and other financial institutions offer products and services to help you manage your money, but do you know how they work? If you have a savings account, credit card, or loan, banks are ... Savings bank : focuses on accepting savings deposits and paying interest on deposits. Building society and Landesbanks: institutions that conduct retail banking. A Direct or internet-only bank is a banking operation without any physical bank branches, conceived and implemented wholly with networked computers. A bank is a financial institution that accepts deposits and provides loans, as well as other services. Learn about the economic functions, revenue sources, and categories of banks in India, such as public, private, foreign, and regional rural banks.