Commercial banks play a key role in the economy by accepting deposits from customers and providing loans and other financial services. They offer a variety of deposit products like savings accounts, fixed deposits, and current accounts. For credit, banks provide overdrafts, cash credits, loans, and bill discounting. Banks also offer other services like remittances, debit/credit cards, letters of credit, and safety deposit lockers. Commercial banking has evolved in India from the establishment of presidency banks in early 1800s to nationalization in 1969 and ongoing liberalization and globalization.